From 23b5f73266e59a598c1e5dd435d87651b5a7626b Mon Sep 17 00:00:00 2001 From: Badhri Jagan Sridharan Date: Mon, 1 Oct 2018 12:45:00 -0700 Subject: usb: typec: tcpm: Do not disconnect link for self powered devices During HARD_RESET the data link is disconnected. For self powered device, the spec is advising against doing that. >From USB_PD_R3_0 7.1.5 Response to Hard Resets Device operation during and after a Hard Reset is defined as follows: Self-powered devices Should Not disconnect from USB during a Hard Reset (see Section 9.1.2). Bus powered devices will disconnect from USB during a Hard Reset due to the loss of their power source. Tackle this by letting TCPM know whether the device is self or bus powered. This overcomes unnecessary port disconnections from hard reset. Also, speeds up the enumeration time when connected to Type-A ports. Signed-off-by: Badhri Jagan Sridharan Reviewed-by: Heikki Krogerus --------- Version history: V3: Rebase on top of usb-next V2: Based on feedback from heikki.krogerus@linux.intel.com - self_powered added to the struct tcpm_port which is populated from a. "connector" node of the device tree in tcpm_fw_get_caps() b. "self_powered" node of the tcpc_config in tcpm_copy_caps Based on feedbase from linux@roeck-us.net - Code was refactored - SRC_HARD_RESET_VBUS_OFF sets the link state to false based on self_powered flag V1 located here: https://lkml.org/lkml/2018/9/13/94 Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/tcpm/tcpm.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c index dbbd71f754d0..ba6e5cdaed2c 100644 --- a/drivers/usb/typec/tcpm/tcpm.c +++ b/drivers/usb/typec/tcpm/tcpm.c @@ -317,6 +317,9 @@ struct tcpm_port { /* Deadline in jiffies to exit src_try_wait state */ unsigned long max_wait; + /* port belongs to a self powered device */ + bool self_powered; + #ifdef CONFIG_DEBUG_FS struct dentry *dentry; struct mutex logbuffer_lock; /* log buffer access lock */ @@ -3254,7 +3257,8 @@ static void run_state_machine(struct tcpm_port *port) case SRC_HARD_RESET_VBUS_OFF: tcpm_set_vconn(port, true); tcpm_set_vbus(port, false); - tcpm_set_roles(port, false, TYPEC_SOURCE, TYPEC_HOST); + tcpm_set_roles(port, port->self_powered, TYPEC_SOURCE, + TYPEC_HOST); tcpm_set_state(port, SRC_HARD_RESET_VBUS_ON, PD_T_SRC_RECOVER); break; case SRC_HARD_RESET_VBUS_ON: @@ -3267,7 +3271,8 @@ static void run_state_machine(struct tcpm_port *port) memset(&port->pps_data, 0, sizeof(port->pps_data)); tcpm_set_vconn(port, false); tcpm_set_charge(port, false); - tcpm_set_roles(port, false, TYPEC_SINK, TYPEC_DEVICE); + tcpm_set_roles(port, port->self_powered, TYPEC_SINK, + TYPEC_DEVICE); /* * VBUS may or may not toggle, depending on the adapter. * If it doesn't toggle, transition to SNK_HARD_RESET_SINK_ON @@ -4412,6 +4417,8 @@ sink: return -EINVAL; port->operating_snk_mw = mw / 1000; + port->self_powered = fwnode_property_read_bool(fwnode, "self-powered"); + return 0; } @@ -4720,6 +4727,7 @@ static int tcpm_copy_caps(struct tcpm_port *port, port->typec_caps.prefer_role = tcfg->default_role; port->typec_caps.type = tcfg->type; port->typec_caps.data = tcfg->data; + port->self_powered = port->tcpc->config->self_powered; return 0; } -- cgit From 157c0f2f641a9938382b092c64548ebdabfe25e0 Mon Sep 17 00:00:00 2001 From: Badhri Jagan Sridharan Date: Mon, 1 Oct 2018 12:45:01 -0700 Subject: usb: typec: tcpm: charge current handling for sink during hard reset During the initial connect to a non-pd port, sink would hard reset twice before deeming that the port partner is non-pd. TCPM sets the the charge path to false during the hard reset. This causes unnecessary connects/disconnects of charge path and makes port take longer to charge from the non-pd ports. Avoid this by not setting the charge path to false unless the partner has already identified to be pd capable. When partner is a pd port, set the charge path to false in SNK_HARD_RESET_SINK_OFF. Set the current limits to default value based of CC pull up and resume the charge path when port enters SNK_HARD_RESET_SINK_ON. Signed-off-by: Badhri Jagan Sridharan Reviewed-by: Rob Herring Reviewed-by: Heikki Krogerus -------- Changes in V3: Rebase on top of usb-next Changes in V2: Based on feedback of jackp@codeaurora.org - vsafe_5v_hard_reset flag from tcpc_config is removed - Patch only differentiates between pd port partner and non-pd port partner V1 version of the patch is here: https://lkml.org/lkml/2018/9/14/11 Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/tcpm/tcpm.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c index ba6e5cdaed2c..3620efee2688 100644 --- a/drivers/usb/typec/tcpm/tcpm.c +++ b/drivers/usb/typec/tcpm/tcpm.c @@ -3270,7 +3270,8 @@ static void run_state_machine(struct tcpm_port *port) case SNK_HARD_RESET_SINK_OFF: memset(&port->pps_data, 0, sizeof(port->pps_data)); tcpm_set_vconn(port, false); - tcpm_set_charge(port, false); + if (port->pd_capable) + tcpm_set_charge(port, false); tcpm_set_roles(port, port->self_powered, TYPEC_SINK, TYPEC_DEVICE); /* @@ -3302,6 +3303,12 @@ static void run_state_machine(struct tcpm_port *port) * Similar, dual-mode ports in source mode should transition * to PE_SNK_Transition_to_default. */ + if (port->pd_capable) { + tcpm_set_current_limit(port, + tcpm_get_current_limit(port), + 5000); + tcpm_set_charge(port, true); + } tcpm_set_attached_state(port, true); tcpm_set_state(port, SNK_STARTUP, 0); break; -- cgit From 1d3e773ae0a65a1b6b5d2aa21250c96f3e975aba Mon Sep 17 00:00:00 2001 From: Chengguang Xu Date: Fri, 2 Nov 2018 22:14:27 +0800 Subject: usb: host: remove unnecessary condition check dma_pool_destroy() can handle NULL pointer correctly, so there is no need to check NULL pointer before calling dma_pool_destroy(). Signed-off-by: Chengguang Xu Acked-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ohci-mem.c | 12 ++++-------- 1 file changed, 4 insertions(+), 8 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/host/ohci-mem.c b/drivers/usb/host/ohci-mem.c index b3da3f12e5b1..3965ac0341eb 100644 --- a/drivers/usb/host/ohci-mem.c +++ b/drivers/usb/host/ohci-mem.c @@ -57,14 +57,10 @@ static int ohci_mem_init (struct ohci_hcd *ohci) static void ohci_mem_cleanup (struct ohci_hcd *ohci) { - if (ohci->td_cache) { - dma_pool_destroy (ohci->td_cache); - ohci->td_cache = NULL; - } - if (ohci->ed_cache) { - dma_pool_destroy (ohci->ed_cache); - ohci->ed_cache = NULL; - } + dma_pool_destroy(ohci->td_cache); + ohci->td_cache = NULL; + dma_pool_destroy(ohci->ed_cache); + ohci->ed_cache = NULL; } /*-------------------------------------------------------------------------*/ -- cgit From 15f6f7f48db9b1f89175185c6dafc1eaa16f7a66 Mon Sep 17 00:00:00 2001 From: Colin Ian King Date: Mon, 29 Oct 2018 22:49:45 +0000 Subject: USB: gadget: udc: fix spelling mistake "intrerrupt" -> "interrupt" Trivial fix to spelling mistake in comment Signed-off-by: Colin Ian King Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/udc/pch_udc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/udc/pch_udc.c b/drivers/usb/gadget/udc/pch_udc.c index afaea11ec771..55c8c8abeacd 100644 --- a/drivers/usb/gadget/udc/pch_udc.c +++ b/drivers/usb/gadget/udc/pch_udc.c @@ -1330,7 +1330,7 @@ static void pch_vbus_gpio_work_rise(struct work_struct *irq_work) } /** - * pch_vbus_gpio_irq() - IRQ handler for GPIO intrerrupt for changing VBUS + * pch_vbus_gpio_irq() - IRQ handler for GPIO interrupt for changing VBUS * @irq: Interrupt request number * @dev: Reference to the device structure * -- cgit From 548f32f59456e71379c61d4e88727ee6c5f6ccd6 Mon Sep 17 00:00:00 2001 From: YueHaibing Date: Thu, 11 Oct 2018 07:44:33 +0000 Subject: USB: serial: quatech2: remove set but not used variable 'port_priv' Fixes gcc '-Wunused-but-set-variable' warning: drivers/usb/serial/quatech2.c: In function 'qt2_process_read_urb': drivers/usb/serial/quatech2.c:503:27: warning: variable 'port_priv' set but not used [-Wunused-but-set-variable] It not used any more after commit 2be818a116b2 ('Revert "USB: quatech2: only write to the tty if the port is open."') Signed-off-by: YueHaibing Signed-off-by: Johan Hovold --- drivers/usb/serial/quatech2.c | 3 --- 1 file changed, 3 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/quatech2.c b/drivers/usb/serial/quatech2.c index f2fbe1ec9701..a62981ca7a73 100644 --- a/drivers/usb/serial/quatech2.c +++ b/drivers/usb/serial/quatech2.c @@ -500,7 +500,6 @@ static void qt2_process_read_urb(struct urb *urb) struct usb_serial *serial; struct qt2_serial_private *serial_priv; struct usb_serial_port *port; - struct qt2_port_private *port_priv; bool escapeflag; unsigned char *ch; int i; @@ -514,7 +513,6 @@ static void qt2_process_read_urb(struct urb *urb) serial = urb->context; serial_priv = usb_get_serial_data(serial); port = serial->port[serial_priv->current_port]; - port_priv = usb_get_serial_port_data(port); for (i = 0; i < urb->actual_length; i++) { ch = (unsigned char *)urb->transfer_buffer + i; @@ -566,7 +564,6 @@ static void qt2_process_read_urb(struct urb *urb) serial_priv->current_port = newport; port = serial->port[serial_priv->current_port]; - port_priv = usb_get_serial_port_data(port); i += 3; escapeflag = true; break; -- cgit From 32d8a6fc5bd62769c7fa60818e0a32bd5126a565 Mon Sep 17 00:00:00 2001 From: YueHaibing Date: Fri, 26 Oct 2018 20:25:49 +0800 Subject: USB: serial: mos7840: remove set but not used variables 'st, data1, iflag' Fixes gcc '-Wunused-but-set-variable' warning: drivers/usb/serial/mos7840.c: In function 'mos7840_interrupt_callback': drivers/usb/serial/mos7840.c:604:14: warning: variable 'st' set but not used [-Wunused-but-set-variable] drivers/usb/serial/mos7840.c: In function 'mos7840_write': drivers/usb/serial/mos7840.c:1303:17: warning: variable 'data1' set but not used [-Wunused-but-set-variable] drivers/usb/serial/mos7840.c:1700:11: warning: variable 'iflag' set but not used [-Wunused-but-set-variable] They are never used since introduction in commit 3f5429746d91 ("USB: Moschip 7840 USB-Serial Driver") Signed-off-by: YueHaibing Signed-off-by: Johan Hovold --- drivers/usb/serial/mos7840.c | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c index 88828b4b8c44..bfbf75b36349 100644 --- a/drivers/usb/serial/mos7840.c +++ b/drivers/usb/serial/mos7840.c @@ -601,7 +601,7 @@ static void mos7840_interrupt_callback(struct urb *urb) struct usb_serial *serial; __u16 Data; unsigned char *data; - __u8 sp[5], st; + __u8 sp[5]; int i, rv = 0; __u16 wval, wreg = 0; int status = urb->status; @@ -644,7 +644,6 @@ static void mos7840_interrupt_callback(struct urb *urb) sp[1] = (__u8) data[1]; sp[2] = (__u8) data[2]; sp[3] = (__u8) data[3]; - st = (__u8) data[4]; for (i = 0; i < serial->num_ports; i++) { mos7840_port = mos7840_get_port_private(serial->port[i]); @@ -1300,7 +1299,6 @@ static int mos7840_write(struct tty_struct *tty, struct usb_serial_port *port, struct urb *urb; /* __u16 Data; */ const unsigned char *current_position = data; - unsigned char *data1; if (mos7840_port_paranoia_check(port, __func__)) return -1; @@ -1361,7 +1359,6 @@ static int mos7840_write(struct tty_struct *tty, struct usb_serial_port *port, mos7840_bulk_out_data_callback, mos7840_port); } - data1 = urb->transfer_buffer; dev_dbg(&port->dev, "bulkout endpoint is %d\n", port->bulk_out_endpointAddress); if (mos7840_port->has_led) @@ -1697,7 +1694,6 @@ static void mos7840_change_port_settings(struct tty_struct *tty, { int baud; unsigned cflag; - unsigned iflag; __u8 lData; __u8 lParity; __u8 lStop; @@ -1729,7 +1725,6 @@ static void mos7840_change_port_settings(struct tty_struct *tty, lParity = LCR_PAR_NONE; cflag = tty->termios.c_cflag; - iflag = tty->termios.c_iflag; /* Change the number of bits */ switch (cflag & CSIZE) { -- cgit From 1ad0f1603a6b2afb62a1c065409aaa4e43ca7627 Mon Sep 17 00:00:00 2001 From: Eric Biggers Date: Wed, 14 Nov 2018 12:19:39 -0800 Subject: crypto: drop mask=CRYPTO_ALG_ASYNC from 'cipher' tfm allocations 'cipher' algorithms (single block ciphers) are always synchronous, so passing CRYPTO_ALG_ASYNC in the mask to crypto_alloc_cipher() has no effect. Many users therefore already don't pass it, but some still do. This inconsistency can cause confusion, especially since the way the 'mask' argument works is somewhat counterintuitive. Thus, just remove the unneeded CRYPTO_ALG_ASYNC flags. This patch shouldn't change any actual behavior. Signed-off-by: Eric Biggers Signed-off-by: Herbert Xu --- drivers/usb/wusbcore/crypto.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/wusbcore/crypto.c b/drivers/usb/wusbcore/crypto.c index 68ddee86a886..edb7263bff40 100644 --- a/drivers/usb/wusbcore/crypto.c +++ b/drivers/usb/wusbcore/crypto.c @@ -316,7 +316,7 @@ ssize_t wusb_prf(void *out, size_t out_size, goto error_setkey_cbc; } - tfm_aes = crypto_alloc_cipher("aes", 0, CRYPTO_ALG_ASYNC); + tfm_aes = crypto_alloc_cipher("aes", 0, 0); if (IS_ERR(tfm_aes)) { result = PTR_ERR(tfm_aes); printk(KERN_ERR "E: can't load AES: %d\n", (int)result); -- cgit From ab60075f2a4eebca1abb04f712569963fb4d9d6c Mon Sep 17 00:00:00 2001 From: "Ji-Ze Hong (Peter Hong)" Date: Thu, 15 Nov 2018 10:58:44 +0800 Subject: USB: serial: f81534: fix reading old/new IC config The F81532/534 had a internal configuration space to save & control IC state with address F81534_CUSTOM_ADDRESS_START (0x2f00). Layout as following: +00h: to indicate the section is valid +01h~04h: UART Mode & port availability +05h~08h: Output pin control on IC power on +09h~12h: Output pin control on working <-- New added Old driver will use +05~08h as default on working, but newer IC will configed with shutdown mode(7) in 05h~08h and working mode with RS232(1) in 09h~12h. It'll make mainstream driver not working. This patch will make mainstream driver compatible older and newer IC. If using a old IC, the +05h~08h will be 00h~06h, we'll direct apply it. If using a new IC, the +05h~08h will be 07h or larger, we'll read +09h~12h to apply newer configuration. Signed-off-by: Ji-Ze Hong (Peter Hong) Signed-off-by: Johan Hovold --- drivers/usb/serial/f81534.c | 20 +++++++++++++++++--- 1 file changed, 17 insertions(+), 3 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/f81534.c b/drivers/usb/serial/f81534.c index 380933db34dd..2b39bda035c7 100644 --- a/drivers/usb/serial/f81534.c +++ b/drivers/usb/serial/f81534.c @@ -45,14 +45,17 @@ #define F81534_CONFIG1_REG (0x09 + F81534_UART_BASE_ADDRESS) #define F81534_DEF_CONF_ADDRESS_START 0x3000 -#define F81534_DEF_CONF_SIZE 8 +#define F81534_DEF_CONF_SIZE 12 #define F81534_CUSTOM_ADDRESS_START 0x2f00 #define F81534_CUSTOM_DATA_SIZE 0x10 #define F81534_CUSTOM_NO_CUSTOM_DATA 0xff #define F81534_CUSTOM_VALID_TOKEN 0xf0 #define F81534_CONF_OFFSET 1 -#define F81534_CONF_GPIO_OFFSET 4 +#define F81534_CONF_INIT_GPIO_OFFSET 4 +#define F81534_CONF_WORK_GPIO_OFFSET 8 +#define F81534_CONF_GPIO_SHUTDOWN 7 +#define F81534_CONF_GPIO_RS232 1 #define F81534_MAX_DATA_BLOCK 64 #define F81534_MAX_BUS_RETRY 20 @@ -1337,8 +1340,19 @@ static int f81534_set_port_output_pin(struct usb_serial_port *port) serial_priv = usb_get_serial_data(serial); port_priv = usb_get_serial_port_data(port); - idx = F81534_CONF_GPIO_OFFSET + port_priv->phy_num; + idx = F81534_CONF_INIT_GPIO_OFFSET + port_priv->phy_num; value = serial_priv->conf_data[idx]; + if (value >= F81534_CONF_GPIO_SHUTDOWN) { + /* + * Newer IC configure will make transceiver in shutdown mode on + * initial power on. We need enable it before using UARTs. + */ + idx = F81534_CONF_WORK_GPIO_OFFSET + port_priv->phy_num; + value = serial_priv->conf_data[idx]; + if (value >= F81534_CONF_GPIO_SHUTDOWN) + value = F81534_CONF_GPIO_RS232; + } + pins = &f81534_port_out_pins[port_priv->phy_num]; for (i = 0; i < ARRAY_SIZE(pins->pin); ++i) { -- cgit From 6abd837104a3a8e1cda64fc4d7675f6c3ece9d8b Mon Sep 17 00:00:00 2001 From: Nikolaj Fogh Date: Thu, 22 Nov 2018 21:27:46 +0100 Subject: USB: serial: ftdi_sio: use rounding when calculating baud rate divisors MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Improve baud-rate generation by using rounding-to-closest instead of truncation in divisor calculation. Results have been verified by logic analyzer on an FT232RT (232BM) chip. The following table shows the wanted baud rate, the baud rate obtained with the old method (truncation), with the new method (rounding) and the baud rate generated by the windows 10 driver. The numbers in parentheses is the error. +- Wanted --+------ Old -------+------ New -------+------ Win -------+ |   9600  |   9600 (0.00%)  |   9604 (0.05%)  |   9605 (0.05%)  | |   19200   |   19200 (0.00%)  |   19199 (0.01%)  |   19198 (0.01%)  | |   38400   |   38395 (0.01%)  |   38431 (0.08%)  |   38394 (0.02%)  | |   57600   |   57725 (0.22%)  |   57540 (0.10%)  |   57673 (0.13%)  | |  115200   |  115307 (0.09%)  |  115330 (0.11%)  |  115320 (0.10%)  | |  921600   |  919963 (0.18%)  |  920386 (0.13%)  |  920810 (0.09%)  | |  961200   |  996512 (3.67%)  |  956480 (0.49%)  |  956937 (0.44%)  | +-----------+------------------+------------------+------------------+ The error due to noise in the measurements is in the order of a few tenths of a %. As can be seen, the baud rate is significantly improved for some rates (e.g. 961200), and corresponds to the output given by the windows driver. The theoretical baud rate has been calculated for all baud rates from 1 to 3M, and as expected, the error is centered around 0, with a triangle shape instead of a sawtooth, so the maximum error is decreased to half. Signed-off-by: Nikolaj Fogh [ johan: edit commit message slightly ] Signed-off-by: Johan Hovold --- drivers/usb/serial/ftdi_sio.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c index 609198d9594c..1ab2a6191013 100644 --- a/drivers/usb/serial/ftdi_sio.c +++ b/drivers/usb/serial/ftdi_sio.c @@ -1130,7 +1130,7 @@ static unsigned short int ftdi_232am_baud_base_to_divisor(int baud, int base) { unsigned short int divisor; /* divisor shifted 3 bits to the left */ - int divisor3 = base / 2 / baud; + int divisor3 = DIV_ROUND_CLOSEST(base, 2 * baud); if ((divisor3 & 0x7) == 7) divisor3++; /* round x.7/8 up to x+1 */ divisor = divisor3 >> 3; @@ -1156,7 +1156,7 @@ static u32 ftdi_232bm_baud_base_to_divisor(int baud, int base) static const unsigned char divfrac[8] = { 0, 3, 2, 4, 1, 5, 6, 7 }; u32 divisor; /* divisor shifted 3 bits to the left */ - int divisor3 = base / 2 / baud; + int divisor3 = DIV_ROUND_CLOSEST(base, 2 * baud); divisor = divisor3 >> 3; divisor |= (u32)divfrac[divisor3 & 0x7] << 14; /* Deal with special cases for highest baud rates. */ @@ -1179,7 +1179,7 @@ static u32 ftdi_2232h_baud_base_to_divisor(int baud, int base) int divisor3; /* hi-speed baud rate is 10-bit sampling instead of 16-bit */ - divisor3 = base * 8 / (baud * 10); + divisor3 = DIV_ROUND_CLOSEST(8 * base, 10 * baud); divisor = divisor3 >> 3; divisor |= (u32)divfrac[divisor3 & 0x7] << 14; -- cgit From 18557feccfbf96dd6d4a62723904927064ad3592 Mon Sep 17 00:00:00 2001 From: Colin Ian King Date: Mon, 19 Nov 2018 16:43:54 +0000 Subject: USB: ene_usb6250: add missing indentation There is a missing indentation before the return statement. Add it. Signed-off-by: Colin Ian King Signed-off-by: Greg Kroah-Hartman --- drivers/usb/storage/ene_ub6250.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/storage/ene_ub6250.c b/drivers/usb/storage/ene_ub6250.c index 4d261e4de9ad..c26129d5b943 100644 --- a/drivers/usb/storage/ene_ub6250.c +++ b/drivers/usb/storage/ene_ub6250.c @@ -1131,7 +1131,7 @@ static int ms_lib_alloc_writebuf(struct us_data *us) ms_lib_clear_writebuf(us); -return 0; + return 0; } static int ms_lib_force_setlogical_pair(struct us_data *us, u16 logblk, u16 phyblk) -- cgit From f4b614adbf3aceaa4dab034665c379352777de39 Mon Sep 17 00:00:00 2001 From: Colin Ian King Date: Mon, 19 Nov 2018 16:34:00 +0000 Subject: drivers: usb: early: clean up indentation, remove extraneous tabs There is a hunk of code that is indented too much by one level, fix this by removing the extraneous tabs. Signed-off-by: Colin Ian King Signed-off-by: Greg Kroah-Hartman --- drivers/usb/early/ehci-dbgp.c | 38 +++++++++++++++++++------------------- 1 file changed, 19 insertions(+), 19 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/early/ehci-dbgp.c b/drivers/usb/early/ehci-dbgp.c index d633c2abe5a4..ea0d531c63e2 100644 --- a/drivers/usb/early/ehci-dbgp.c +++ b/drivers/usb/early/ehci-dbgp.c @@ -631,28 +631,28 @@ static int ehci_reset_port(int port) if (!(portsc & PORT_RESET)) break; } - if (portsc & PORT_RESET) { - /* force reset to complete */ - loop = 100 * 1000; - writel(portsc & ~(PORT_RWC_BITS | PORT_RESET), - &ehci_regs->port_status[port - 1]); - do { - udelay(1); - portsc = readl(&ehci_regs->port_status[port-1]); - } while ((portsc & PORT_RESET) && (--loop > 0)); - } + if (portsc & PORT_RESET) { + /* force reset to complete */ + loop = 100 * 1000; + writel(portsc & ~(PORT_RWC_BITS | PORT_RESET), + &ehci_regs->port_status[port - 1]); + do { + udelay(1); + portsc = readl(&ehci_regs->port_status[port-1]); + } while ((portsc & PORT_RESET) && (--loop > 0)); + } - /* Device went away? */ - if (!(portsc & PORT_CONNECT)) - return -ENOTCONN; + /* Device went away? */ + if (!(portsc & PORT_CONNECT)) + return -ENOTCONN; - /* bomb out completely if something weird happened */ - if ((portsc & PORT_CSC)) - return -EINVAL; + /* bomb out completely if something weird happened */ + if ((portsc & PORT_CSC)) + return -EINVAL; - /* If we've finished resetting, then break out of the loop */ - if (!(portsc & PORT_RESET) && (portsc & PORT_PE)) - return 0; + /* If we've finished resetting, then break out of the loop */ + if (!(portsc & PORT_RESET) && (portsc & PORT_PE)) + return 0; return -EBUSY; } -- cgit From 2c85a1817e4ba09592964226b46305a7b9599884 Mon Sep 17 00:00:00 2001 From: Thinh Nguyen Date: Wed, 7 Nov 2018 17:55:00 -0800 Subject: usb: dwc3: debugfs: Properly name Tx/RxFIFO The Tx/RxFIFO types in the GDBGFIFOSPACE.FIFO_QUEUE_SELECT are not queue. Properly rename them. Signed-off-by: Thinh Nguyen Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/core.h | 4 ++-- drivers/usb/dwc3/debugfs.c | 16 ++++++++-------- 2 files changed, 10 insertions(+), 10 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index 5bfb62533e0f..2ba034b5da07 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -179,8 +179,8 @@ #define DWC3_GDBGFIFOSPACE_TYPE(n) (((n) << 5) & 0x1e0) #define DWC3_GDBGFIFOSPACE_SPACE_AVAILABLE(n) (((n) >> 16) & 0xffff) -#define DWC3_TXFIFOQ 0 -#define DWC3_RXFIFOQ 1 +#define DWC3_TXFIFO 0 +#define DWC3_RXFIFO 1 #define DWC3_TXREQQ 2 #define DWC3_RXREQQ 3 #define DWC3_RXINFOQ 4 diff --git a/drivers/usb/dwc3/debugfs.c b/drivers/usb/dwc3/debugfs.c index df8e73ec3342..17238bbe9733 100644 --- a/drivers/usb/dwc3/debugfs.c +++ b/drivers/usb/dwc3/debugfs.c @@ -496,7 +496,7 @@ struct dwc3_ep_file_map { const struct file_operations *const fops; }; -static int dwc3_tx_fifo_queue_show(struct seq_file *s, void *unused) +static int dwc3_tx_fifo_size_show(struct seq_file *s, void *unused) { struct dwc3_ep *dep = s->private; struct dwc3 *dwc = dep->dwc; @@ -504,14 +504,14 @@ static int dwc3_tx_fifo_queue_show(struct seq_file *s, void *unused) u32 val; spin_lock_irqsave(&dwc->lock, flags); - val = dwc3_core_fifo_space(dep, DWC3_TXFIFOQ); + val = dwc3_core_fifo_space(dep, DWC3_TXFIFO); seq_printf(s, "%u\n", val); spin_unlock_irqrestore(&dwc->lock, flags); return 0; } -static int dwc3_rx_fifo_queue_show(struct seq_file *s, void *unused) +static int dwc3_rx_fifo_size_show(struct seq_file *s, void *unused) { struct dwc3_ep *dep = s->private; struct dwc3 *dwc = dep->dwc; @@ -519,7 +519,7 @@ static int dwc3_rx_fifo_queue_show(struct seq_file *s, void *unused) u32 val; spin_lock_irqsave(&dwc->lock, flags); - val = dwc3_core_fifo_space(dep, DWC3_RXFIFOQ); + val = dwc3_core_fifo_space(dep, DWC3_RXFIFO); seq_printf(s, "%u\n", val); spin_unlock_irqrestore(&dwc->lock, flags); @@ -675,8 +675,8 @@ out: return 0; } -DEFINE_SHOW_ATTRIBUTE(dwc3_tx_fifo_queue); -DEFINE_SHOW_ATTRIBUTE(dwc3_rx_fifo_queue); +DEFINE_SHOW_ATTRIBUTE(dwc3_tx_fifo_size); +DEFINE_SHOW_ATTRIBUTE(dwc3_rx_fifo_size); DEFINE_SHOW_ATTRIBUTE(dwc3_tx_request_queue); DEFINE_SHOW_ATTRIBUTE(dwc3_rx_request_queue); DEFINE_SHOW_ATTRIBUTE(dwc3_rx_info_queue); @@ -686,8 +686,8 @@ DEFINE_SHOW_ATTRIBUTE(dwc3_transfer_type); DEFINE_SHOW_ATTRIBUTE(dwc3_trb_ring); static const struct dwc3_ep_file_map dwc3_ep_file_map[] = { - { "tx_fifo_queue", &dwc3_tx_fifo_queue_fops, }, - { "rx_fifo_queue", &dwc3_rx_fifo_queue_fops, }, + { "tx_fifo_size", &dwc3_tx_fifo_size_fops, }, + { "rx_fifo_size", &dwc3_rx_fifo_size_fops, }, { "tx_request_queue", &dwc3_tx_request_queue_fops, }, { "rx_request_queue", &dwc3_rx_request_queue_fops, }, { "rx_info_queue", &dwc3_rx_info_queue_fops, }, -- cgit From 0f874f79dc81aec0229babebd6ef04e591a548d2 Mon Sep 17 00:00:00 2001 From: Thinh Nguyen Date: Wed, 7 Nov 2018 17:55:06 -0800 Subject: usb: dwc3: debugfs: Print eps Tx/RxFIFO in bytes TxFIFO and RxFIFO from GDBGFIFOSPACE are fifo depths in MDWIDTH. Convert them into bytes for easier read. Signed-off-by: Thinh Nguyen Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/debugfs.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/debugfs.c b/drivers/usb/dwc3/debugfs.c index 17238bbe9733..bd3d75b2f8bc 100644 --- a/drivers/usb/dwc3/debugfs.c +++ b/drivers/usb/dwc3/debugfs.c @@ -505,6 +505,10 @@ static int dwc3_tx_fifo_size_show(struct seq_file *s, void *unused) spin_lock_irqsave(&dwc->lock, flags); val = dwc3_core_fifo_space(dep, DWC3_TXFIFO); + + /* Convert to bytes */ + val *= DWC3_MDWIDTH(dwc->hwparams.hwparams0); + val >>= 3; seq_printf(s, "%u\n", val); spin_unlock_irqrestore(&dwc->lock, flags); @@ -520,6 +524,10 @@ static int dwc3_rx_fifo_size_show(struct seq_file *s, void *unused) spin_lock_irqsave(&dwc->lock, flags); val = dwc3_core_fifo_space(dep, DWC3_RXFIFO); + + /* Convert to bytes */ + val *= DWC3_MDWIDTH(dwc->hwparams.hwparams0); + val >>= 3; seq_printf(s, "%u\n", val); spin_unlock_irqrestore(&dwc->lock, flags); -- cgit From 62ba09d6bb6330d8a70e40e23891d8764663d469 Mon Sep 17 00:00:00 2001 From: Thinh Nguyen Date: Wed, 7 Nov 2018 17:55:13 -0800 Subject: usb: dwc3: debugfs: Dump internal LSP and ep registers To dump internal LSP and endpoint state debug registers, we must write to GDBGLSPMUX register. This patch correctly dump LSP and endpoint states from the debug registers. If the controller is in device mode, all LSP and endpoint state registers will be dumped via the debugfs attribute "lsp_dump". In host mode, the user has to write the LSP number to "lsp_dump" to dump a specific LSP selection. Fixes: 80b776340c78 ("usb: dwc3: Dump LSP and BMU debug info") Signed-off-by: Thinh Nguyen Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/core.h | 13 ++++ drivers/usb/dwc3/debugfs.c | 145 +++++++++++++++++++++++++++++++++++++++++++-- 2 files changed, 154 insertions(+), 4 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index 2ba034b5da07..7b17bb6a353c 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -174,6 +174,12 @@ #define DWC3_GSBUSCFG0_INCRBRSTENA (1 << 0) /* undefined length enable */ #define DWC3_GSBUSCFG0_INCRBRST_MASK 0xff +/* Global Debug LSP MUX Select */ +#define DWC3_GDBGLSPMUX_ENDBC BIT(15) /* Host only */ +#define DWC3_GDBGLSPMUX_HOSTSELECT(n) ((n) & 0x3fff) +#define DWC3_GDBGLSPMUX_DEVSELECT(n) (((n) & 0xf) << 4) +#define DWC3_GDBGLSPMUX_EPSELECT(n) ((n) & 0xf) + /* Global Debug Queue/FIFO Space Available Register */ #define DWC3_GDBGFIFOSPACE_NUM(n) ((n) & 0x1f) #define DWC3_GDBGFIFOSPACE_TYPE(n) (((n) << 5) & 0x1e0) @@ -253,6 +259,9 @@ #define DWC3_GSTS_DEVICE_IP BIT(6) #define DWC3_GSTS_CSR_TIMEOUT BIT(5) #define DWC3_GSTS_BUS_ERR_ADDR_VLD BIT(4) +#define DWC3_GSTS_CURMOD(n) ((n) & 0x3) +#define DWC3_GSTS_CURMOD_DEVICE 0 +#define DWC3_GSTS_CURMOD_HOST 1 /* Global USB2 PHY Configuration Register */ #define DWC3_GUSB2PHYCFG_PHYSOFTRST BIT(31) @@ -321,6 +330,7 @@ #define DWC3_GHWPARAMS1_EN_PWROPT_HIB 2 #define DWC3_GHWPARAMS1_PWROPT(n) ((n) << 24) #define DWC3_GHWPARAMS1_PWROPT_MASK DWC3_GHWPARAMS1_PWROPT(3) +#define DWC3_GHWPARAMS1_ENDBC BIT(31) /* Global HWPARAMS3 Register */ #define DWC3_GHWPARAMS3_SSPHY_IFC(n) ((n) & 3) @@ -945,6 +955,7 @@ struct dwc3_scratchpad_array { * @hwparams: copy of hwparams registers * @root: debugfs root folder pointer * @regset: debugfs pointer to regdump file + * @dbg_lsp_select: current debug lsp mux register selection * @test_mode: true when we're entering a USB test mode * @test_mode_nr: test feature selector * @lpm_nyet_threshold: LPM NYET response threshold @@ -1121,6 +1132,8 @@ struct dwc3 { struct dentry *root; struct debugfs_regset32 *regset; + u32 dbg_lsp_select; + u8 test_mode; u8 test_mode_nr; u8 lpm_nyet_threshold; diff --git a/drivers/usb/dwc3/debugfs.c b/drivers/usb/dwc3/debugfs.c index bd3d75b2f8bc..1da012f105d7 100644 --- a/drivers/usb/dwc3/debugfs.c +++ b/drivers/usb/dwc3/debugfs.c @@ -25,6 +25,8 @@ #include "io.h" #include "debug.h" +#define DWC3_LSP_MUX_UNSELECTED 0xfffff + #define dump_register(nm) \ { \ .name = __stringify(nm), \ @@ -82,10 +84,6 @@ static const struct debugfs_reg32 dwc3_regs[] = { dump_register(GDBGFIFOSPACE), dump_register(GDBGLTSSM), dump_register(GDBGBMU), - dump_register(GDBGLSPMUX), - dump_register(GDBGLSP), - dump_register(GDBGEPINFO0), - dump_register(GDBGEPINFO1), dump_register(GPRTBIMAP_HS0), dump_register(GPRTBIMAP_HS1), dump_register(GPRTBIMAP_FS0), @@ -279,6 +277,114 @@ static const struct debugfs_reg32 dwc3_regs[] = { dump_register(OSTS), }; +static void dwc3_host_lsp(struct seq_file *s) +{ + struct dwc3 *dwc = s->private; + bool dbc_enabled; + u32 sel; + u32 reg; + u32 val; + + dbc_enabled = !!(dwc->hwparams.hwparams1 & DWC3_GHWPARAMS1_ENDBC); + + sel = dwc->dbg_lsp_select; + if (sel == DWC3_LSP_MUX_UNSELECTED) { + seq_puts(s, "Write LSP selection to print for host\n"); + return; + } + + reg = DWC3_GDBGLSPMUX_HOSTSELECT(sel); + + dwc3_writel(dwc->regs, DWC3_GDBGLSPMUX, reg); + val = dwc3_readl(dwc->regs, DWC3_GDBGLSP); + seq_printf(s, "GDBGLSP[%d] = 0x%08x\n", sel, val); + + if (dbc_enabled && sel < 256) { + reg |= DWC3_GDBGLSPMUX_ENDBC; + dwc3_writel(dwc->regs, DWC3_GDBGLSPMUX, reg); + val = dwc3_readl(dwc->regs, DWC3_GDBGLSP); + seq_printf(s, "GDBGLSP_DBC[%d] = 0x%08x\n", sel, val); + } +} + +static void dwc3_gadget_lsp(struct seq_file *s) +{ + struct dwc3 *dwc = s->private; + int i; + u32 reg; + + for (i = 0; i < 16; i++) { + reg = DWC3_GDBGLSPMUX_DEVSELECT(i); + dwc3_writel(dwc->regs, DWC3_GDBGLSPMUX, reg); + reg = dwc3_readl(dwc->regs, DWC3_GDBGLSP); + seq_printf(s, "GDBGLSP[%d] = 0x%08x\n", i, reg); + } +} + +static int dwc3_lsp_show(struct seq_file *s, void *unused) +{ + struct dwc3 *dwc = s->private; + unsigned int current_mode; + unsigned long flags; + u32 reg; + + spin_lock_irqsave(&dwc->lock, flags); + reg = dwc3_readl(dwc->regs, DWC3_GSTS); + current_mode = DWC3_GSTS_CURMOD(reg); + + switch (current_mode) { + case DWC3_GSTS_CURMOD_HOST: + dwc3_host_lsp(s); + break; + case DWC3_GSTS_CURMOD_DEVICE: + dwc3_gadget_lsp(s); + break; + default: + seq_puts(s, "Mode is unknown, no LSP register printed\n"); + break; + } + spin_unlock_irqrestore(&dwc->lock, flags); + + return 0; +} + +static int dwc3_lsp_open(struct inode *inode, struct file *file) +{ + return single_open(file, dwc3_lsp_show, inode->i_private); +} + +static ssize_t dwc3_lsp_write(struct file *file, const char __user *ubuf, + size_t count, loff_t *ppos) +{ + struct seq_file *s = file->private_data; + struct dwc3 *dwc = s->private; + unsigned long flags; + char buf[32] = { 0 }; + u32 sel; + int ret; + + if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) + return -EFAULT; + + ret = kstrtouint(buf, 0, &sel); + if (ret) + return ret; + + spin_lock_irqsave(&dwc->lock, flags); + dwc->dbg_lsp_select = sel; + spin_unlock_irqrestore(&dwc->lock, flags); + + return count; +} + +static const struct file_operations dwc3_lsp_fops = { + .open = dwc3_lsp_open, + .write = dwc3_lsp_write, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + static int dwc3_mode_show(struct seq_file *s, void *unused) { struct dwc3 *dwc = s->private; @@ -683,6 +789,30 @@ out: return 0; } +static int dwc3_ep_info_register_show(struct seq_file *s, void *unused) +{ + struct dwc3_ep *dep = s->private; + struct dwc3 *dwc = dep->dwc; + unsigned long flags; + u64 ep_info; + u32 lower_32_bits; + u32 upper_32_bits; + u32 reg; + + spin_lock_irqsave(&dwc->lock, flags); + reg = DWC3_GDBGLSPMUX_EPSELECT(dep->number); + dwc3_writel(dwc->regs, DWC3_GDBGLSPMUX, reg); + + lower_32_bits = dwc3_readl(dwc->regs, DWC3_GDBGEPINFO0); + upper_32_bits = dwc3_readl(dwc->regs, DWC3_GDBGEPINFO1); + + ep_info = ((u64)upper_32_bits << 32) | lower_32_bits; + seq_printf(s, "0x%016llx\n", ep_info); + spin_unlock_irqrestore(&dwc->lock, flags); + + return 0; +} + DEFINE_SHOW_ATTRIBUTE(dwc3_tx_fifo_size); DEFINE_SHOW_ATTRIBUTE(dwc3_rx_fifo_size); DEFINE_SHOW_ATTRIBUTE(dwc3_tx_request_queue); @@ -692,6 +822,7 @@ DEFINE_SHOW_ATTRIBUTE(dwc3_descriptor_fetch_queue); DEFINE_SHOW_ATTRIBUTE(dwc3_event_queue); DEFINE_SHOW_ATTRIBUTE(dwc3_transfer_type); DEFINE_SHOW_ATTRIBUTE(dwc3_trb_ring); +DEFINE_SHOW_ATTRIBUTE(dwc3_ep_info_register); static const struct dwc3_ep_file_map dwc3_ep_file_map[] = { { "tx_fifo_size", &dwc3_tx_fifo_size_fops, }, @@ -703,6 +834,7 @@ static const struct dwc3_ep_file_map dwc3_ep_file_map[] = { { "event_queue", &dwc3_event_queue_fops, }, { "transfer_type", &dwc3_transfer_type_fops, }, { "trb_ring", &dwc3_trb_ring_fops, }, + { "GDBGEPINFO", &dwc3_ep_info_register_fops, }, }; static void dwc3_debugfs_create_endpoint_files(struct dwc3_ep *dep, @@ -750,6 +882,8 @@ void dwc3_debugfs_init(struct dwc3 *dwc) if (!dwc->regset) return; + dwc->dbg_lsp_select = DWC3_LSP_MUX_UNSELECTED; + dwc->regset->regs = dwc3_regs; dwc->regset->nregs = ARRAY_SIZE(dwc3_regs); dwc->regset->base = dwc->regs - DWC3_GLOBALS_REGS_START; @@ -759,6 +893,9 @@ void dwc3_debugfs_init(struct dwc3 *dwc) debugfs_create_regset32("regdump", S_IRUGO, root, dwc->regset); + debugfs_create_file("lsp_dump", S_IRUGO | S_IWUSR, root, dwc, + &dwc3_lsp_fops); + if (IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE)) { debugfs_create_file("mode", S_IRUGO | S_IWUSR, root, dwc, &dwc3_mode_fops); -- cgit From 0d36dede457873404becd7c9cb9d0f2bcfd0dcd9 Mon Sep 17 00:00:00 2001 From: Thinh Nguyen Date: Wed, 7 Nov 2018 17:55:19 -0800 Subject: usb: dwc3: debugfs: Properly print/set link state for HS Highspeed device and below has different state names than superspeed and higher. Add proper checks and printouts of link states for highspeed and below. Signed-off-by: Thinh Nguyen Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/debug.h | 29 +++++++++++++++++++++++++++++ drivers/usb/dwc3/debugfs.c | 19 +++++++++++++++++-- 2 files changed, 46 insertions(+), 2 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/debug.h b/drivers/usb/dwc3/debug.h index c66d216dcc30..4f75ab3505b7 100644 --- a/drivers/usb/dwc3/debug.h +++ b/drivers/usb/dwc3/debug.h @@ -116,6 +116,35 @@ dwc3_gadget_link_string(enum dwc3_link_state link_state) } } +/** + * dwc3_gadget_hs_link_string - returns highspeed and below link name + * @link_state: link state code + */ +static inline const char * +dwc3_gadget_hs_link_string(enum dwc3_link_state link_state) +{ + switch (link_state) { + case DWC3_LINK_STATE_U0: + return "On"; + case DWC3_LINK_STATE_U2: + return "Sleep"; + case DWC3_LINK_STATE_U3: + return "Suspend"; + case DWC3_LINK_STATE_SS_DIS: + return "Disconnected"; + case DWC3_LINK_STATE_RX_DET: + return "Early Suspend"; + case DWC3_LINK_STATE_RECOV: + return "Recovery"; + case DWC3_LINK_STATE_RESET: + return "Reset"; + case DWC3_LINK_STATE_RESUME: + return "Resume"; + default: + return "UNKNOWN link state\n"; + } +} + /** * dwc3_trb_type_string - returns TRB type as a string * @type: the type of the TRB diff --git a/drivers/usb/dwc3/debugfs.c b/drivers/usb/dwc3/debugfs.c index 1da012f105d7..e613a61ae58a 100644 --- a/drivers/usb/dwc3/debugfs.c +++ b/drivers/usb/dwc3/debugfs.c @@ -539,13 +539,17 @@ static int dwc3_link_state_show(struct seq_file *s, void *unused) unsigned long flags; enum dwc3_link_state state; u32 reg; + u8 speed; spin_lock_irqsave(&dwc->lock, flags); reg = dwc3_readl(dwc->regs, DWC3_DSTS); state = DWC3_DSTS_USBLNKST(reg); - spin_unlock_irqrestore(&dwc->lock, flags); + speed = reg & DWC3_DSTS_CONNECTSPD; - seq_printf(s, "%s\n", dwc3_gadget_link_string(state)); + seq_printf(s, "%s\n", (speed >= DWC3_DSTS_SUPERSPEED) ? + dwc3_gadget_link_string(state) : + dwc3_gadget_hs_link_string(state)); + spin_unlock_irqrestore(&dwc->lock, flags); return 0; } @@ -563,6 +567,8 @@ static ssize_t dwc3_link_state_write(struct file *file, unsigned long flags; enum dwc3_link_state state = 0; char buf[32]; + u32 reg; + u8 speed; if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) return -EFAULT; @@ -583,6 +589,15 @@ static ssize_t dwc3_link_state_write(struct file *file, return -EINVAL; spin_lock_irqsave(&dwc->lock, flags); + reg = dwc3_readl(dwc->regs, DWC3_DSTS); + speed = reg & DWC3_DSTS_CONNECTSPD; + + if (speed < DWC3_DSTS_SUPERSPEED && + state != DWC3_LINK_STATE_RECOV) { + spin_unlock_irqrestore(&dwc->lock, flags); + return -EINVAL; + } + dwc3_gadget_set_link_state(dwc, state); spin_unlock_irqrestore(&dwc->lock, flags); -- cgit From d102444cac156425e1f154089eb4400ddb581629 Mon Sep 17 00:00:00 2001 From: Thinh Nguyen Date: Wed, 7 Nov 2018 17:56:23 -0800 Subject: usb: dwc3: debugfs: Print/set link state for peripheral mode Current implementation only prints/sets the link state for peripheral mode only. Check and prevent printing bogus link state if the current mode of operation is not peripheral. Signed-off-by: Thinh Nguyen Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/debugfs.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/debugfs.c b/drivers/usb/dwc3/debugfs.c index e613a61ae58a..1c792710348f 100644 --- a/drivers/usb/dwc3/debugfs.c +++ b/drivers/usb/dwc3/debugfs.c @@ -542,6 +542,13 @@ static int dwc3_link_state_show(struct seq_file *s, void *unused) u8 speed; spin_lock_irqsave(&dwc->lock, flags); + reg = dwc3_readl(dwc->regs, DWC3_GSTS); + if (DWC3_GSTS_CURMOD(reg) != DWC3_GSTS_CURMOD_DEVICE) { + seq_puts(s, "Not available\n"); + spin_unlock_irqrestore(&dwc->lock, flags); + return 0; + } + reg = dwc3_readl(dwc->regs, DWC3_DSTS); state = DWC3_DSTS_USBLNKST(reg); speed = reg & DWC3_DSTS_CONNECTSPD; @@ -589,6 +596,12 @@ static ssize_t dwc3_link_state_write(struct file *file, return -EINVAL; spin_lock_irqsave(&dwc->lock, flags); + reg = dwc3_readl(dwc->regs, DWC3_GSTS); + if (DWC3_GSTS_CURMOD(reg) != DWC3_GSTS_CURMOD_DEVICE) { + spin_unlock_irqrestore(&dwc->lock, flags); + return -EINVAL; + } + reg = dwc3_readl(dwc->regs, DWC3_DSTS); speed = reg & DWC3_DSTS_CONNECTSPD; -- cgit From eafeacf1196447dac0b8c40e77e96a81b74b8f7f Mon Sep 17 00:00:00 2001 From: Thinh Nguyen Date: Wed, 7 Nov 2018 18:10:30 -0800 Subject: usb: dwc3: Set GUSB2PHYCFG.ENBLSLPM GUSB2PHYCFG.ENBLSLPM enables the controller to assert low power signals to the PHY. Unless disabled via device property, explicitly set GUSB2PHYCFG.ENBLSLPM as it may not be set by default. Signed-off-by: Thinh Nguyen Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/core.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index 2f2048aa5fde..077f60baa12d 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -661,6 +661,8 @@ static int dwc3_phy_setup(struct dwc3 *dwc) if (dwc->dis_enblslpm_quirk) reg &= ~DWC3_GUSB2PHYCFG_ENBLSLPM; + else + reg |= DWC3_GUSB2PHYCFG_ENBLSLPM; if (dwc->dis_u2_freeclk_exists_quirk) reg &= ~DWC3_GUSB2PHYCFG_U2_FREECLK_EXISTS; -- cgit From 022a0208c0ff038f8970a71cb298f85722b4a0ef Mon Sep 17 00:00:00 2001 From: Thinh Nguyen Date: Wed, 7 Nov 2018 18:10:42 -0800 Subject: usb: dwc3: Support option to disable USB2 LPM Support the option to disable USB2 LPM. Set xhci "usb2-lpm-disable" property via "snps,usb2-lpm-disable" property. Signed-off-by: Thinh Nguyen Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/core.c | 2 ++ drivers/usb/dwc3/core.h | 2 ++ drivers/usb/dwc3/host.c | 5 ++++- 3 files changed, 8 insertions(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index 077f60baa12d..0807353f3b07 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -1248,6 +1248,8 @@ static void dwc3_get_properties(struct dwc3 *dwc) &hird_threshold); dwc->usb3_lpm_capable = device_property_read_bool(dev, "snps,usb3_lpm_capable"); + dwc->usb2_lpm_disable = device_property_read_bool(dev, + "snps,usb2-lpm-disable"); device_property_read_u8(dev, "snps,rx-thr-num-pkt-prd", &rx_thr_num_pkt_prd); device_property_read_u8(dev, "snps,rx-max-burst-prd", diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index 7b17bb6a353c..6a77cd0a0b01 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -982,6 +982,7 @@ struct dwc3_scratchpad_array { * @setup_packet_pending: true when there's a Setup Packet in FIFO. Workaround * @three_stage_setup: set if we perform a three phase setup * @usb3_lpm_capable: set if hadrware supports Link Power Management + * @usb2_lpm_disable: set to disable usb2 lpm * @disable_scramble_quirk: set if we enable the disable scramble quirk * @u2exit_lfps_quirk: set if we enable u2exit lfps quirk * @u2ss_inp3_quirk: set if we enable P3 OK for U2/SS Inactive quirk @@ -1159,6 +1160,7 @@ struct dwc3 { unsigned setup_packet_pending:1; unsigned three_stage_setup:1; unsigned usb3_lpm_capable:1; + unsigned usb2_lpm_disable:1; unsigned disable_scramble_quirk:1; unsigned u2exit_lfps_quirk:1; diff --git a/drivers/usb/dwc3/host.c b/drivers/usb/dwc3/host.c index 1a3878a3be78..f55947294f7c 100644 --- a/drivers/usb/dwc3/host.c +++ b/drivers/usb/dwc3/host.c @@ -46,7 +46,7 @@ out: int dwc3_host_init(struct dwc3 *dwc) { - struct property_entry props[3]; + struct property_entry props[4]; struct platform_device *xhci; int ret, irq; struct resource *res; @@ -93,6 +93,9 @@ int dwc3_host_init(struct dwc3 *dwc) if (dwc->usb3_lpm_capable) props[prop_idx++].name = "usb3-lpm-capable"; + if (dwc->usb2_lpm_disable) + props[prop_idx++].name = "usb2-lpm-disable"; + /** * WORKAROUND: dwc3 revisions <=3.00a have a limitation * where Port Disable command doesn't work. -- cgit From 1808bd2132d1a53a401459474213bdcdbc94d215 Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Tue, 30 Oct 2018 17:19:59 +0100 Subject: usb: gadget: aspeed-vhub: constify usb_gadget_ops structure The usb_gadget_ops structure can be const as it is only stored in the ops field of a usb_gadget structure and this field is const. Done with the help of Coccinelle. Reviewed-by: Andrew Jeffery Signed-off-by: Julia Lawall Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/aspeed-vhub/dev.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/udc/aspeed-vhub/dev.c b/drivers/usb/gadget/udc/aspeed-vhub/dev.c index f0233912bace..6b1b16b17d7d 100644 --- a/drivers/usb/gadget/udc/aspeed-vhub/dev.c +++ b/drivers/usb/gadget/udc/aspeed-vhub/dev.c @@ -438,7 +438,7 @@ static int ast_vhub_udc_stop(struct usb_gadget *gadget) return 0; } -static struct usb_gadget_ops ast_vhub_udc_ops = { +static const struct usb_gadget_ops ast_vhub_udc_ops = { .get_frame = ast_vhub_udc_get_frame, .wakeup = ast_vhub_udc_wakeup, .pullup = ast_vhub_udc_pullup, -- cgit From 408d3ba006af57380fa48858b39f72fde6405031 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Wed, 7 Nov 2018 12:40:29 -0800 Subject: usb: dwc3: don't log probe deferrals; but do log other error codes It's not very useful to repeat a bunch of probe deferral errors. And it's also not very useful to log "failed" without telling the error code. Signed-off-by: Brian Norris Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/core.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index 0807353f3b07..6acadd647dc3 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -1486,7 +1486,8 @@ static int dwc3_probe(struct platform_device *pdev) ret = dwc3_core_init(dwc); if (ret) { - dev_err(dev, "failed to initialize core\n"); + if (ret != -EPROBE_DEFER) + dev_err(dev, "failed to initialize core: %d\n", ret); goto err4; } -- cgit From 85383756ae34db2ee46daa779f869598a3443651 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Sat, 10 Nov 2018 20:11:00 +0200 Subject: usb: dwc3: drd: Switch to device property for 'extcon' handling Switch to device property for 'extcon' handling. No functional change intended. Signed-off-by: Andy Shevchenko Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/drd.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/drd.c b/drivers/usb/dwc3/drd.c index 218371f985ca..2401bd504891 100644 --- a/drivers/usb/dwc3/drd.c +++ b/drivers/usb/dwc3/drd.c @@ -10,6 +10,7 @@ #include #include #include +#include #include "debug.h" #include "core.h" @@ -446,8 +447,8 @@ static struct extcon_dev *dwc3_get_extcon(struct dwc3 *dwc) struct device_node *np_phy, *np_conn; struct extcon_dev *edev; - if (of_property_read_bool(dev->of_node, "extcon")) - return extcon_get_edev_by_phandle(dwc->dev, 0); + if (device_property_read_bool(dev, "extcon")) + return extcon_get_edev_by_phandle(dev, 0); np_phy = of_parse_phandle(dev->of_node, "phys", 0); np_conn = of_graph_get_remote_node(np_phy, -1, -1); -- cgit From 268784ba14a7bff23bc80531d6db31986eafd54b Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Sat, 10 Nov 2018 20:11:01 +0200 Subject: usb: dwc3: drd: Add support for DR detection through extcon Allow extcon device, found by name, to provide DR status for USB. This is needed, for example, in case of Intel Merrifield platform, where the Intel Basin Cove PMIC provides an extcon device to communicate the detected role. Note, that the "linux,extcon-name" property name is only for kernel internal use by X86/ACPI platform code and as such is not documented in the device tree bindings. Signed-off-by: Andy Shevchenko Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/drd.c | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/drd.c b/drivers/usb/dwc3/drd.c index 2401bd504891..869725d15c74 100644 --- a/drivers/usb/dwc3/drd.c +++ b/drivers/usb/dwc3/drd.c @@ -446,10 +446,20 @@ static struct extcon_dev *dwc3_get_extcon(struct dwc3 *dwc) struct device *dev = dwc->dev; struct device_node *np_phy, *np_conn; struct extcon_dev *edev; + const char *name; if (device_property_read_bool(dev, "extcon")) return extcon_get_edev_by_phandle(dev, 0); + /* + * Device tree platforms should get extcon via phandle. + * On ACPI platforms, we get the name from a device property. + * This device property is for kernel internal use only and + * is expected to be set by the glue code. + */ + if (device_property_read_string(dev, "linux,extcon-name", &name) == 0) + return extcon_get_extcon_dev(name); + np_phy = of_parse_phandle(dev->of_node, "phys", 0); np_conn = of_graph_get_remote_node(np_phy, -1, -1); -- cgit From ceb94bc52c437463f0903e61060a94a2226fb672 Mon Sep 17 00:00:00 2001 From: Yoshihiro Shimoda Date: Fri, 9 Nov 2018 20:44:36 +0900 Subject: usb: gadget: udc: renesas_usb3: add a safety connection way for forced_b_device This patch adds a safety connection way for "forced_b_device" with "workaround_for_vbus" like below: < Example for R-Car E3 Ebisu > # modprobe # echo 1 > /sys/kernel/debug/ee020000.usb/b_device (connect a usb cable to host side.) # echo 2 > /sys/kernel/debug/ee020000.usb/b_device Previous code should have connected a usb cable before the "b_device" is set to 1 on the Ebisu board. However, if xHCI driver on the board is probed, it causes some troubles: - Conflicts USB VBUS/signals between the board and another host. - "Cannot enable. Maybe the USB cable is bad?" might happen on both the board and another host with a usb hub. - Cannot enumerate a usb gadget correctly because an interruption of VBUS change happens unexpectedly. Reported-by: Kazuya Mizuguchi Signed-off-by: Yoshihiro Shimoda Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/renesas_usb3.c | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/udc/renesas_usb3.c b/drivers/usb/gadget/udc/renesas_usb3.c index cdffbd1e0316..6e34f9594159 100644 --- a/drivers/usb/gadget/udc/renesas_usb3.c +++ b/drivers/usb/gadget/udc/renesas_usb3.c @@ -358,6 +358,7 @@ struct renesas_usb3 { bool extcon_host; /* check id and set EXTCON_USB_HOST */ bool extcon_usb; /* check vbus and set EXTCON_USB */ bool forced_b_device; + bool start_to_connect; }; #define gadget_to_renesas_usb3(_gadget) \ @@ -476,7 +477,8 @@ static void usb3_init_axi_bridge(struct renesas_usb3 *usb3) static void usb3_init_epc_registers(struct renesas_usb3 *usb3) { usb3_write(usb3, ~0, USB3_USB_INT_STA_1); - usb3_enable_irq_1(usb3, USB_INT_1_VBUS_CNG); + if (!usb3->workaround_for_vbus) + usb3_enable_irq_1(usb3, USB_INT_1_VBUS_CNG); } static bool usb3_wakeup_usb2_phy(struct renesas_usb3 *usb3) @@ -700,8 +702,7 @@ static void usb3_mode_config(struct renesas_usb3 *usb3, bool host, bool a_dev) usb3_set_mode_by_role_sw(usb3, host); usb3_vbus_out(usb3, a_dev); /* for A-Peripheral or forced B-device mode */ - if ((!host && a_dev) || - (usb3->workaround_for_vbus && usb3->forced_b_device)) + if ((!host && a_dev) || usb3->start_to_connect) usb3_connect(usb3); spin_unlock_irqrestore(&usb3->lock, flags); } @@ -2432,7 +2433,11 @@ static ssize_t renesas_usb3_b_device_write(struct file *file, if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) return -EFAULT; - if (!strncmp(buf, "1", 1)) + usb3->start_to_connect = false; + if (usb3->workaround_for_vbus && usb3->forced_b_device && + !strncmp(buf, "2", 1)) + usb3->start_to_connect = true; + else if (!strncmp(buf, "1", 1)) usb3->forced_b_device = true; else usb3->forced_b_device = false; @@ -2440,7 +2445,7 @@ static ssize_t renesas_usb3_b_device_write(struct file *file, if (usb3->workaround_for_vbus) usb3_disconnect(usb3); - /* Let this driver call usb3_connect() anyway */ + /* Let this driver call usb3_connect() if needed */ usb3_check_id(usb3); return count; -- cgit From 89a9cc47513e91bc91ba2c438d5e422a0c8d05e7 Mon Sep 17 00:00:00 2001 From: Thinh Nguyen Date: Fri, 2 Nov 2018 18:41:42 -0700 Subject: usb: dwc3: Set default mode for DWC_usb3 v3.30a and higher DWC_usb31 and DWC_usb3 v3.30a and higher do not support OTG mode. If the controller supports DRD but the dr_mode is not specified or set to OTG, then set the mode to peripheral. Signed-off-by: Thinh Nguyen Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/core.c | 9 +++++---- drivers/usb/dwc3/core.h | 1 + 2 files changed, 6 insertions(+), 4 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index 6acadd647dc3..8f6d9c6f016e 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -80,11 +80,12 @@ static int dwc3_get_dr_mode(struct dwc3 *dwc) mode = USB_DR_MODE_PERIPHERAL; /* - * dwc_usb31 does not support OTG mode. If the controller - * supports DRD but the dr_mode is not specified or set to OTG, - * then set the mode to peripheral. + * DWC_usb31 and DWC_usb3 v3.30a and higher do not support OTG + * mode. If the controller supports DRD but the dr_mode is not + * specified or set to OTG, then set the mode to peripheral. */ - if (mode == USB_DR_MODE_OTG && dwc3_is_usb31(dwc)) + if (mode == USB_DR_MODE_OTG && + dwc->revision >= DWC3_REVISION_330A) mode = USB_DR_MODE_PERIPHERAL; } diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index 6a77cd0a0b01..eec4b9735fb7 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -1107,6 +1107,7 @@ struct dwc3 { #define DWC3_REVISION_290A 0x5533290a #define DWC3_REVISION_300A 0x5533300a #define DWC3_REVISION_310A 0x5533310a +#define DWC3_REVISION_330A 0x5533330a /* * NOTICE: we're using bit 31 as a "is usb 3.1" flag. This is really -- cgit From d64bc8ee92856e39b3150d93e244ca8239ae6ada Mon Sep 17 00:00:00 2001 From: Artur Petrosyan Date: Fri, 2 Nov 2018 11:29:48 -0400 Subject: usb: dwc2: gadget: Fix WkupAlert interrupt handler. According to the databook DCTL_RMTWKUPSIG bit is defined in DCTL register not in DCFG. Updated setting DCTL_RMTWKUPSIG bit to DCTL register. Fixes: 187c5298a122 ("usb: dwc2: gadget: Add handler for WkupAlert interrupt") Signed-off-by: Artur Petrosyan Signed-off-by: Minas Harutyunyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/gadget.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index 2d6d2c8244de..6bd4054e894d 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -262,7 +262,7 @@ static void dwc2_gadget_wkup_alert_handler(struct dwc2_hsotg *hsotg) if (gintsts2 & GINTSTS2_WKUP_ALERT_INT) { dev_dbg(hsotg->dev, "%s: Wkup_Alert_Int\n", __func__); dwc2_clear_bit(hsotg, GINTSTS2, GINTSTS2_WKUP_ALERT_INT); - dwc2_set_bit(hsotg, DCFG, DCTL_RMTWKUPSIG); + dwc2_set_bit(hsotg, DCTL, DCTL_RMTWKUPSIG); } } -- cgit From 9aed8c08c82d8498769119b73358d070a7cbb54c Mon Sep 17 00:00:00 2001 From: Artur Petrosyan Date: Fri, 2 Nov 2018 11:29:55 -0400 Subject: usb: dwc2: gadget: Accept LPM token when TxFIFO is not empty Set GLPMCFG_LPM_ACCEPT_CTRL_ISOC bit in GLPMCFG register to accept LPM token during ISOC transfers when TxFIFO is not empty. - Added two definitions. #define GLPMCFG_LPM_ACCEPT_CTRL_CONTROL BIT(21) #define GLPMCFG_LPM_ACCEPT_CTRL_ISOC BIT(22) This patch uses GLPMCFG_LPM_ACCEPT_CTRL_ISOC. GLPMCFG_LPM_ACCEPT_CTRL_CONTROL is defined for further use. - Added setting GLPMCFG_LPM_ACCEPT_CTRL_ISOC bit in GLPMCFG register in dwc2_gadget_init_lpm function. Signed-off-by: Artur Petrosyan Signed-off-by: Minas Harutyunyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/gadget.c | 1 + drivers/usb/dwc2/hw.h | 2 ++ 2 files changed, 3 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index 6bd4054e894d..94f3ba995580 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -5026,6 +5026,7 @@ void dwc2_gadget_init_lpm(struct dwc2_hsotg *hsotg) val |= hsotg->params.lpm_clock_gating ? GLPMCFG_ENBLSLPM : 0; val |= hsotg->params.hird_threshold << GLPMCFG_HIRD_THRES_SHIFT; val |= hsotg->params.besl ? GLPMCFG_ENBESL : 0; + val |= GLPMCFG_LPM_ACCEPT_CTRL_ISOC; dwc2_writel(hsotg, val, GLPMCFG); dev_dbg(hsotg->dev, "GLPMCFG=0x%08x\n", dwc2_readl(hsotg, GLPMCFG)); diff --git a/drivers/usb/dwc2/hw.h b/drivers/usb/dwc2/hw.h index 2b1ea441b7d4..98af924a9a5c 100644 --- a/drivers/usb/dwc2/hw.h +++ b/drivers/usb/dwc2/hw.h @@ -333,6 +333,8 @@ #define GLPMCFG_SNDLPM BIT(24) #define GLPMCFG_RETRY_CNT_MASK (0x7 << 21) #define GLPMCFG_RETRY_CNT_SHIFT 21 +#define GLPMCFG_LPM_ACCEPT_CTRL_CONTROL BIT(21) +#define GLPMCFG_LPM_ACCEPT_CTRL_ISOC BIT(22) #define GLPMCFG_LPM_CHNL_INDX_MASK (0xf << 17) #define GLPMCFG_LPM_CHNL_INDX_SHIFT 17 #define GLPMCFG_L1RESUMEOK BIT(16) -- cgit From e89428381080b73740e1fb1fa9b08f1173723b80 Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Tue, 30 Oct 2018 16:31:21 +0100 Subject: usb: gadget: uvc: constify vb2_ops structure The vb2_ops structure can be const as it is only stored in the ops field of a vb2_queue structure and this field is const. Done with the help of Coccinelle. Reviewed-by: Laurent Pinchart Signed-off-by: Julia Lawall Signed-off-by: Felipe Balbi --- drivers/usb/gadget/function/uvc_queue.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/function/uvc_queue.c b/drivers/usb/gadget/function/uvc_queue.c index f2497cb96abb..61e2c94cc0b0 100644 --- a/drivers/usb/gadget/function/uvc_queue.c +++ b/drivers/usb/gadget/function/uvc_queue.c @@ -102,7 +102,7 @@ static void uvc_buffer_queue(struct vb2_buffer *vb) spin_unlock_irqrestore(&queue->irqlock, flags); } -static struct vb2_ops uvc_queue_qops = { +static const struct vb2_ops uvc_queue_qops = { .queue_setup = uvc_queue_setup, .buf_prepare = uvc_buffer_prepare, .buf_queue = uvc_buffer_queue, -- cgit From 4ab9c39f038d929845f70aade2c2eb64174bba87 Mon Sep 17 00:00:00 2001 From: Colin Ian King Date: Mon, 29 Oct 2018 22:49:45 +0000 Subject: usb: gadget: udc: fix spelling mistake "intrerrupt" -> "interrupt" Trivial fix to spelling mistake in comment Signed-off-by: Colin Ian King Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/pch_udc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/udc/pch_udc.c b/drivers/usb/gadget/udc/pch_udc.c index afaea11ec771..55c8c8abeacd 100644 --- a/drivers/usb/gadget/udc/pch_udc.c +++ b/drivers/usb/gadget/udc/pch_udc.c @@ -1330,7 +1330,7 @@ static void pch_vbus_gpio_work_rise(struct work_struct *irq_work) } /** - * pch_vbus_gpio_irq() - IRQ handler for GPIO intrerrupt for changing VBUS + * pch_vbus_gpio_irq() - IRQ handler for GPIO interrupt for changing VBUS * @irq: Interrupt request number * @dev: Reference to the device structure * -- cgit From 7f7c548c5f652375a61c1072bac3db11f7a48326 Mon Sep 17 00:00:00 2001 From: Vincent Pelletier Date: Tue, 9 Oct 2018 14:43:18 +0000 Subject: usb: gadget: f_fs: Add support for CCID descriptors. Nothing to remap, only check length. Define a minimal structure for CCID descriptor only used to check length. As this descriptor shares the same value as HID descriptors, keep track and compare current interface's class to expected HID and CCID standard values. Signed-off-by: Vincent Pelletier Signed-off-by: Felipe Balbi --- drivers/usb/gadget/function/f_fs.c | 29 ++++++++++++++++++++++------- 1 file changed, 22 insertions(+), 7 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c index 31e8bf3578c8..65b72e5c4605 100644 --- a/drivers/usb/gadget/function/f_fs.c +++ b/drivers/usb/gadget/function/f_fs.c @@ -23,6 +23,7 @@ #include #include +#include #include #include @@ -1926,7 +1927,7 @@ typedef int (*ffs_os_desc_callback)(enum ffs_os_desc_type entity, static int __must_check ffs_do_single_desc(char *data, unsigned len, ffs_entity_callback entity, - void *priv) + void *priv, int *current_class) { struct usb_descriptor_header *_ds = (void *)data; u8 length; @@ -1984,6 +1985,7 @@ static int __must_check ffs_do_single_desc(char *data, unsigned len, __entity(INTERFACE, ds->bInterfaceNumber); if (ds->iInterface) __entity(STRING, ds->iInterface); + *current_class = ds->bInterfaceClass; } break; @@ -1997,11 +1999,22 @@ static int __must_check ffs_do_single_desc(char *data, unsigned len, } break; - case HID_DT_HID: - pr_vdebug("hid descriptor\n"); - if (length != sizeof(struct hid_descriptor)) - goto inv_length; - break; + case USB_TYPE_CLASS | 0x01: + if (*current_class == USB_INTERFACE_CLASS_HID) { + pr_vdebug("hid descriptor\n"); + if (length != sizeof(struct hid_descriptor)) + goto inv_length; + break; + } else if (*current_class == USB_INTERFACE_CLASS_CCID) { + pr_vdebug("ccid descriptor\n"); + if (length != sizeof(struct ccid_descriptor)) + goto inv_length; + break; + } else { + pr_vdebug("unknown descriptor: %d for class %d\n", + _ds->bDescriptorType, *current_class); + return -EINVAL; + } case USB_DT_OTG: if (length != sizeof(struct usb_otg_descriptor)) @@ -2058,6 +2071,7 @@ static int __must_check ffs_do_descs(unsigned count, char *data, unsigned len, { const unsigned _len = len; unsigned long num = 0; + int current_class = -1; ENTER(); @@ -2078,7 +2092,8 @@ static int __must_check ffs_do_descs(unsigned count, char *data, unsigned len, if (!data) return _len - len; - ret = ffs_do_single_desc(data, len, entity, priv); + ret = ffs_do_single_desc(data, len, entity, priv, + ¤t_class); if (unlikely(ret < 0)) { pr_debug("%s returns %d\n", __func__, ret); return ret; -- cgit From 772a7a724f69d258025fedd87dde1aafe4171aef Mon Sep 17 00:00:00 2001 From: Andrzej Pietrasiewicz Date: Wed, 14 Nov 2018 10:47:48 +0100 Subject: usb: gadget: f_fs: Allow scatter-gather buffers Some protocols implemented in userspace with FunctionFS might require large buffers, e.g. 64kB or more. Currently the said memory is allocated with kmalloc, which might fail should system memory be highly fragmented. On the other hand, some UDC hardware allows scatter-gather operation and this patch takes advantage of this capability: if the requested buffer is larger than PAGE_SIZE and the UDC allows scatter-gather operation, then the buffer is allocated with vmalloc and a scatterlist describing it is created and passed to usb request. Signed-off-by: Andrzej Pietrasiewicz Signed-off-by: Felipe Balbi --- drivers/usb/gadget/function/f_fs.c | 93 +++++++++++++++++++++++++++++++++++--- 1 file changed, 86 insertions(+), 7 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c index 65b72e5c4605..1e5430438703 100644 --- a/drivers/usb/gadget/function/f_fs.c +++ b/drivers/usb/gadget/function/f_fs.c @@ -18,9 +18,12 @@ #include #include #include +#include #include +#include #include #include +#include #include #include @@ -219,6 +222,8 @@ struct ffs_io_data { struct usb_ep *ep; struct usb_request *req; + struct sg_table sgt; + bool use_sg; struct ffs_data *ffs; }; @@ -750,6 +755,65 @@ static ssize_t ffs_copy_to_iter(void *data, int data_len, struct iov_iter *iter) return ret; } +/* + * allocate a virtually contiguous buffer and create a scatterlist describing it + * @sg_table - pointer to a place to be filled with sg_table contents + * @size - required buffer size + */ +static void *ffs_build_sg_list(struct sg_table *sgt, size_t sz) +{ + struct page **pages; + void *vaddr, *ptr; + unsigned int n_pages; + int i; + + vaddr = vmalloc(sz); + if (!vaddr) + return NULL; + + n_pages = PAGE_ALIGN(sz) >> PAGE_SHIFT; + pages = kvmalloc_array(n_pages, sizeof(struct page *), GFP_KERNEL); + if (!pages) { + vfree(vaddr); + + return NULL; + } + for (i = 0, ptr = vaddr; i < n_pages; ++i, ptr += PAGE_SIZE) + pages[i] = vmalloc_to_page(ptr); + + if (sg_alloc_table_from_pages(sgt, pages, n_pages, 0, sz, GFP_KERNEL)) { + kvfree(pages); + vfree(vaddr); + + return NULL; + } + kvfree(pages); + + return vaddr; +} + +static inline void *ffs_alloc_buffer(struct ffs_io_data *io_data, + size_t data_len) +{ + if (io_data->use_sg) + return ffs_build_sg_list(&io_data->sgt, data_len); + + return kmalloc(data_len, GFP_KERNEL); +} + +static inline void ffs_free_buffer(struct ffs_io_data *io_data) +{ + if (!io_data->buf) + return; + + if (io_data->use_sg) { + sg_free_table(&io_data->sgt); + vfree(io_data->buf); + } else { + kfree(io_data->buf); + } +} + static void ffs_user_copy_worker(struct work_struct *work) { struct ffs_io_data *io_data = container_of(work, struct ffs_io_data, @@ -777,7 +841,7 @@ static void ffs_user_copy_worker(struct work_struct *work) if (io_data->read) kfree(io_data->to_free); - kfree(io_data->buf); + ffs_free_buffer(io_data); kfree(io_data); } @@ -933,6 +997,7 @@ static ssize_t ffs_epfile_io(struct file *file, struct ffs_io_data *io_data) * earlier */ gadget = epfile->ffs->gadget; + io_data->use_sg = gadget->sg_supported && data_len > PAGE_SIZE; spin_lock_irq(&epfile->ffs->eps_lock); /* In the meantime, endpoint got disabled or changed. */ @@ -949,7 +1014,7 @@ static ssize_t ffs_epfile_io(struct file *file, struct ffs_io_data *io_data) data_len = usb_ep_align_maybe(gadget, ep->ep, data_len); spin_unlock_irq(&epfile->ffs->eps_lock); - data = kmalloc(data_len, GFP_KERNEL); + data = ffs_alloc_buffer(io_data, data_len); if (unlikely(!data)) { ret = -ENOMEM; goto error_mutex; @@ -989,8 +1054,16 @@ static ssize_t ffs_epfile_io(struct file *file, struct ffs_io_data *io_data) bool interrupted = false; req = ep->req; - req->buf = data; - req->length = data_len; + if (io_data->use_sg) { + req->buf = NULL; + req->sg = io_data->sgt.sgl; + req->num_sgs = io_data->sgt.nents; + } else { + req->buf = data; + } + req->length = data_len; + + io_data->buf = data; req->context = &done; req->complete = ffs_epfile_io_complete; @@ -1023,8 +1096,14 @@ static ssize_t ffs_epfile_io(struct file *file, struct ffs_io_data *io_data) } else if (!(req = usb_ep_alloc_request(ep->ep, GFP_ATOMIC))) { ret = -ENOMEM; } else { - req->buf = data; - req->length = data_len; + if (io_data->use_sg) { + req->buf = NULL; + req->sg = io_data->sgt.sgl; + req->num_sgs = io_data->sgt.nents; + } else { + req->buf = data; + } + req->length = data_len; io_data->buf = data; io_data->ep = ep->ep; @@ -1053,7 +1132,7 @@ error_lock: error_mutex: mutex_unlock(&epfile->mutex); error: - kfree(data); + ffs_free_buffer(io_data); return ret; } -- cgit From 475d8e0197f1bcf4647041f46206ffc1a16d15dd Mon Sep 17 00:00:00 2001 From: Thinh Nguyen Date: Thu, 8 Nov 2018 12:06:48 -0800 Subject: usb: dwc3: Track DWC_usb31 VERSIONTYPE Add a new field to dwc3 structure to track VERSIONTYPE. The VERSIONTYPE is represented in ASCII in the 32-bit VERSIONTYPE register. In DWC_usb31, sub releases for each version are tracked with VERSIONTYPE such as "ea01" and "ea02". Signed-off-by: Thinh Nguyen Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/core.c | 1 + drivers/usb/dwc3/core.h | 10 ++++++++++ 2 files changed, 11 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index 8f6d9c6f016e..eb064a65363c 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -705,6 +705,7 @@ static bool dwc3_core_is_valid(struct dwc3 *dwc) /* Detected DWC_usb31 IP */ dwc->revision = dwc3_readl(dwc->regs, DWC3_VER_NUMBER); dwc->revision |= DWC3_REVISION_IS_DWC31; + dwc->version_type = dwc3_readl(dwc->regs, DWC3_VER_TYPE); } else { return false; } diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index eec4b9735fb7..709e8dd356ee 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -928,6 +928,7 @@ struct dwc3_scratchpad_array { * @u1u2: only used on revisions <1.83a for workaround * @maximum_speed: maximum speed requested (mainly for testing purposes) * @revision: revision register contents + * @version_type: VERSIONTYPE register contents, a sub release of a revision * @dr_mode: requested mode of operation * @current_dr_role: current role of operation when in dual-role mode * @desired_dr_role: desired role of operation when in dual-role mode @@ -1117,6 +1118,15 @@ struct dwc3 { #define DWC3_USB31_REVISION_110A (0x3131302a | DWC3_REVISION_IS_DWC31) #define DWC3_USB31_REVISION_120A (0x3132302a | DWC3_REVISION_IS_DWC31) + u32 version_type; + +#define DWC31_VERSIONTYPE_EA01 0x65613031 +#define DWC31_VERSIONTYPE_EA02 0x65613032 +#define DWC31_VERSIONTYPE_EA03 0x65613033 +#define DWC31_VERSIONTYPE_EA04 0x65613034 +#define DWC31_VERSIONTYPE_EA05 0x65613035 +#define DWC31_VERSIONTYPE_EA06 0x65613036 + enum dwc3_ep0_next ep0_next_event; enum dwc3_ep0_state ep0state; enum dwc3_link_state link_state; -- cgit From d92021f66063b30910255d70dc95e0d7b57f018f Mon Sep 17 00:00:00 2001 From: Thinh Nguyen Date: Wed, 14 Nov 2018 22:56:54 -0800 Subject: usb: dwc3: Add workaround for isoc start transfer failure In DWC_usb31 version 1.70a-ea06 and prior, for highspeed and fullspeed isochronous IN, BIT[15:14] of the 16-bit microframe number reported by the XferNotReady event are invalid. The driver uses this number to schedule the isochronous transfer and passes it to the START TRANSFER command. Because this number is invalid, the command may fail. If BIT[15:14] matches the internal 16-bit microframe, the START TRANSFER command will pass and the transfer will start at the scheduled time, if it is off by 1, the command will still pass, but the transfer will start 2 seconds in the future. For all other conditions, the START TRANSFER command will fail with bus-expiry. In order to workaround this issue, we can test for the correct combination of BIT[15:14] by sending START TRANSFER commands with different values of BIT[15:14]: 'b00, 'b01, 'b10, and 'b11. Each combination is 2^14 uframe apart (or 2 seconds). 4 seconds into the future will result in a bus-expiry status. As the result, within the 4 possible combinations for BIT[15:14], there will be 2 successful and 2 failure START COMMAND status. One of the 2 successful command status will result in a 2-second delay start. The smaller BIT[15:14] value is the correct combination. Since there are only 4 outcomes and the results are ordered, we can simply test 2 START TRANSFER commands with BIT[15:14] combinations 'b00 and 'b01 to deduce the smaller successful combination. Let test0 = test status for combination 'b00 and test1 = test status for 'b01 of BIT[15:14]. The correct combination is as follow: if test0 fails and test1 passes, BIT[15:14] is 'b01 if test0 fails and test1 fails, BIT[15:14] is 'b10 if test0 passes and test1 fails, BIT[15:14] is 'b11 if test0 passes and test1 passes, BIT[15:14] is 'b00 Synopsys STAR 9001202023: Wrong microframe number for isochronous IN endpoints. Signed-off-by: Thinh Nguyen Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/core.c | 2 + drivers/usb/dwc3/core.h | 13 +++++ drivers/usb/dwc3/gadget.c | 131 ++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 146 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index eb064a65363c..a1b126f90261 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -1248,6 +1248,8 @@ static void dwc3_get_properties(struct dwc3 *dwc) "snps,is-utmi-l1-suspend"); device_property_read_u8(dev, "snps,hird-threshold", &hird_threshold); + dwc->dis_start_transfer_quirk = device_property_read_bool(dev, + "snps,dis-start-transfer-quirk"); dwc->usb3_lpm_capable = device_property_read_bool(dev, "snps,usb3_lpm_capable"); dwc->usb2_lpm_disable = device_property_read_bool(dev, diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index 709e8dd356ee..0136aa7766e1 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -666,6 +666,10 @@ struct dwc3_event_buffer { * @name: a human readable name e.g. ep1out-bulk * @direction: true for TX, false for RX * @stream_capable: true when streams are enabled + * @combo_num: the test combination BIT[15:14] of the frame number to test + * isochronous START TRANSFER command failure workaround + * @start_cmd_status: the status of testing START TRANSFER command with + * combo_num = 'b00 */ struct dwc3_ep { struct usb_ep endpoint; @@ -715,6 +719,10 @@ struct dwc3_ep { unsigned direction:1; unsigned stream_capable:1; + + /* For isochronous START TRANSFER workaround only */ + u8 combo_num; + int start_cmd_status; }; enum dwc3_phy { @@ -982,6 +990,8 @@ struct dwc3_scratchpad_array { * @pullups_connected: true when Run/Stop bit is set * @setup_packet_pending: true when there's a Setup Packet in FIFO. Workaround * @three_stage_setup: set if we perform a three phase setup + * @dis_start_transfer_quirk: set if start_transfer failure SW workaround is + * not needed for DWC_usb31 version 1.70a-ea06 and below * @usb3_lpm_capable: set if hadrware supports Link Power Management * @usb2_lpm_disable: set to disable usb2 lpm * @disable_scramble_quirk: set if we enable the disable scramble quirk @@ -1117,6 +1127,8 @@ struct dwc3 { #define DWC3_REVISION_IS_DWC31 0x80000000 #define DWC3_USB31_REVISION_110A (0x3131302a | DWC3_REVISION_IS_DWC31) #define DWC3_USB31_REVISION_120A (0x3132302a | DWC3_REVISION_IS_DWC31) +#define DWC3_USB31_REVISION_160A (0x3136302a | DWC3_REVISION_IS_DWC31) +#define DWC3_USB31_REVISION_170A (0x3137302a | DWC3_REVISION_IS_DWC31) u32 version_type; @@ -1170,6 +1182,7 @@ struct dwc3 { unsigned pullups_connected:1; unsigned setup_packet_pending:1; unsigned three_stage_setup:1; + unsigned dis_start_transfer_quirk:1; unsigned usb3_lpm_capable:1; unsigned usb2_lpm_disable:1; diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 9faad896b3a1..c48ea78341a4 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -1263,8 +1263,125 @@ static int __dwc3_gadget_get_frame(struct dwc3 *dwc) return DWC3_DSTS_SOFFN(reg); } +/** + * dwc3_gadget_start_isoc_quirk - workaround invalid frame number + * @dep: isoc endpoint + * + * This function tests for the correct combination of BIT[15:14] from the 16-bit + * microframe number reported by the XferNotReady event for the future frame + * number to start the isoc transfer. + * + * In DWC_usb31 version 1.70a-ea06 and prior, for highspeed and fullspeed + * isochronous IN, BIT[15:14] of the 16-bit microframe number reported by the + * XferNotReady event are invalid. The driver uses this number to schedule the + * isochronous transfer and passes it to the START TRANSFER command. Because + * this number is invalid, the command may fail. If BIT[15:14] matches the + * internal 16-bit microframe, the START TRANSFER command will pass and the + * transfer will start at the scheduled time, if it is off by 1, the command + * will still pass, but the transfer will start 2 seconds in the future. For all + * other conditions, the START TRANSFER command will fail with bus-expiry. + * + * In order to workaround this issue, we can test for the correct combination of + * BIT[15:14] by sending START TRANSFER commands with different values of + * BIT[15:14]: 'b00, 'b01, 'b10, and 'b11. Each combination is 2^14 uframe apart + * (or 2 seconds). 4 seconds into the future will result in a bus-expiry status. + * As the result, within the 4 possible combinations for BIT[15:14], there will + * be 2 successful and 2 failure START COMMAND status. One of the 2 successful + * command status will result in a 2-second delay start. The smaller BIT[15:14] + * value is the correct combination. + * + * Since there are only 4 outcomes and the results are ordered, we can simply + * test 2 START TRANSFER commands with BIT[15:14] combinations 'b00 and 'b01 to + * deduce the smaller successful combination. + * + * Let test0 = test status for combination 'b00 and test1 = test status for 'b01 + * of BIT[15:14]. The correct combination is as follow: + * + * if test0 fails and test1 passes, BIT[15:14] is 'b01 + * if test0 fails and test1 fails, BIT[15:14] is 'b10 + * if test0 passes and test1 fails, BIT[15:14] is 'b11 + * if test0 passes and test1 passes, BIT[15:14] is 'b00 + * + * Synopsys STAR 9001202023: Wrong microframe number for isochronous IN + * endpoints. + */ +static void dwc3_gadget_start_isoc_quirk(struct dwc3_ep *dep) +{ + int cmd_status = 0; + bool test0; + bool test1; + + while (dep->combo_num < 2) { + struct dwc3_gadget_ep_cmd_params params; + u32 test_frame_number; + u32 cmd; + + /* + * Check if we can start isoc transfer on the next interval or + * 4 uframes in the future with BIT[15:14] as dep->combo_num + */ + test_frame_number = dep->frame_number & 0x3fff; + test_frame_number |= dep->combo_num << 14; + test_frame_number += max_t(u32, 4, dep->interval); + + params.param0 = upper_32_bits(dep->dwc->bounce_addr); + params.param1 = lower_32_bits(dep->dwc->bounce_addr); + + cmd = DWC3_DEPCMD_STARTTRANSFER; + cmd |= DWC3_DEPCMD_PARAM(test_frame_number); + cmd_status = dwc3_send_gadget_ep_cmd(dep, cmd, ¶ms); + + /* Redo if some other failure beside bus-expiry is received */ + if (cmd_status && cmd_status != -EAGAIN) { + dep->start_cmd_status = 0; + dep->combo_num = 0; + return; + } + + /* Store the first test status */ + if (dep->combo_num == 0) + dep->start_cmd_status = cmd_status; + + dep->combo_num++; + + /* + * End the transfer if the START_TRANSFER command is successful + * to wait for the next XferNotReady to test the command again + */ + if (cmd_status == 0) { + dwc3_stop_active_transfer(dep, true); + return; + } + } + + /* test0 and test1 are both completed at this point */ + test0 = (dep->start_cmd_status == 0); + test1 = (cmd_status == 0); + + if (!test0 && test1) + dep->combo_num = 1; + else if (!test0 && !test1) + dep->combo_num = 2; + else if (test0 && !test1) + dep->combo_num = 3; + else if (test0 && test1) + dep->combo_num = 0; + + dep->frame_number &= 0x3fff; + dep->frame_number |= dep->combo_num << 14; + dep->frame_number += max_t(u32, 4, dep->interval); + + /* Reinitialize test variables */ + dep->start_cmd_status = 0; + dep->combo_num = 0; + + __dwc3_gadget_kick_transfer(dep); +} + static void __dwc3_gadget_start_isoc(struct dwc3_ep *dep) { + struct dwc3 *dwc = dep->dwc; + if (list_empty(&dep->pending_list)) { dev_info(dep->dwc->dev, "%s: ran out of requests\n", dep->name); @@ -1272,6 +1389,18 @@ static void __dwc3_gadget_start_isoc(struct dwc3_ep *dep) return; } + if (!dwc->dis_start_transfer_quirk && dwc3_is_usb31(dwc) && + (dwc->revision <= DWC3_USB31_REVISION_160A || + (dwc->revision == DWC3_USB31_REVISION_170A && + dwc->version_type >= DWC31_VERSIONTYPE_EA01 && + dwc->version_type <= DWC31_VERSIONTYPE_EA06))) { + + if (dwc->gadget.speed <= USB_SPEED_HIGH && dep->direction) { + dwc3_gadget_start_isoc_quirk(dep); + return; + } + } + dep->frame_number = DWC3_ALIGN_FRAME(dep); __dwc3_gadget_kick_transfer(dep); } @@ -2153,6 +2282,8 @@ static int dwc3_gadget_init_endpoint(struct dwc3 *dwc, u8 epnum) dep->direction = direction; dep->regs = dwc->regs + DWC3_DEP_BASE(epnum); dwc->eps[epnum] = dep; + dep->combo_num = 0; + dep->start_cmd_status = 0; snprintf(dep->name, sizeof(dep->name), "ep%u%s", num, direction ? "in" : "out"); -- cgit From 1a22ec643580626f439c8583edafdcc73798f2fb Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Wed, 1 Aug 2018 13:15:05 +0300 Subject: usb: dwc3: gadget: combine unaligned and zero flags Both flags are used for the same purpose in dwc3: appending an extra TRB at the end to deal with controller requirements. By combining both flags into one, we make it clear that the situation is the same and that they should be treated equally. Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/core.h | 7 +++---- drivers/usb/dwc3/gadget.c | 18 +++++++++--------- 2 files changed, 12 insertions(+), 13 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index 0136aa7766e1..b89d31232028 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -865,11 +865,11 @@ struct dwc3_hwparams { * @epnum: endpoint number to which this request refers * @trb: pointer to struct dwc3_trb * @trb_dma: DMA address of @trb - * @unaligned: true for OUT endpoints with length not divisible by maxp + * @needs_extra_trb: true when request needs one extra TRB (either due to ZLP + * or unaligned OUT) * @direction: IN or OUT direction flag * @mapped: true when request has been dma-mapped * @started: request is started - * @zero: wants a ZLP */ struct dwc3_request { struct usb_request request; @@ -885,11 +885,10 @@ struct dwc3_request { struct dwc3_trb *trb; dma_addr_t trb_dma; - unsigned unaligned:1; + unsigned needs_extra_trb:1; unsigned direction:1; unsigned mapped:1; unsigned started:1; - unsigned zero:1; }; /* diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index c48ea78341a4..3d5bd2a4c07f 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -1073,7 +1073,7 @@ static void dwc3_prepare_one_trb_sg(struct dwc3_ep *dep, struct dwc3 *dwc = dep->dwc; struct dwc3_trb *trb; - req->unaligned = true; + req->needs_extra_trb = true; /* prepare normal TRB */ dwc3_prepare_one_trb(dep, req, true, i); @@ -1117,7 +1117,7 @@ static void dwc3_prepare_one_trb_linear(struct dwc3_ep *dep, struct dwc3 *dwc = dep->dwc; struct dwc3_trb *trb; - req->unaligned = true; + req->needs_extra_trb = true; /* prepare normal TRB */ dwc3_prepare_one_trb(dep, req, true, 0); @@ -1133,7 +1133,7 @@ static void dwc3_prepare_one_trb_linear(struct dwc3_ep *dep, struct dwc3 *dwc = dep->dwc; struct dwc3_trb *trb; - req->zero = true; + req->needs_extra_trb = true; /* prepare normal TRB */ dwc3_prepare_one_trb(dep, req, true, 0); @@ -1544,7 +1544,7 @@ static int dwc3_gadget_ep_dequeue(struct usb_ep *ep, dwc3_ep_inc_deq(dep); } - if (r->unaligned || r->zero) { + if (r->needs_extra_trb) { trb = r->trb + r->num_pending_sgs + 1; trb->ctrl &= ~DWC3_TRB_CTRL_HWO; dwc3_ep_inc_deq(dep); @@ -1555,7 +1555,7 @@ static int dwc3_gadget_ep_dequeue(struct usb_ep *ep, trb->ctrl &= ~DWC3_TRB_CTRL_HWO; dwc3_ep_inc_deq(dep); - if (r->unaligned || r->zero) { + if (r->needs_extra_trb) { trb = r->trb + 1; trb->ctrl &= ~DWC3_TRB_CTRL_HWO; dwc3_ep_inc_deq(dep); @@ -2390,7 +2390,8 @@ static int dwc3_gadget_ep_reclaim_completed_trb(struct dwc3_ep *dep, * with one TRB pending in the ring. We need to manually clear HWO bit * from that TRB. */ - if ((req->zero || req->unaligned) && !(trb->ctrl & DWC3_TRB_CTRL_CHN)) { + + if (req->needs_extra_trb && !(trb->ctrl & DWC3_TRB_CTRL_CHN)) { trb->ctrl &= ~DWC3_TRB_CTRL_HWO; return 1; } @@ -2467,11 +2468,10 @@ static int dwc3_gadget_ep_cleanup_completed_request(struct dwc3_ep *dep, ret = dwc3_gadget_ep_reclaim_trb_linear(dep, req, event, status); - if (req->unaligned || req->zero) { + if (req->needs_extra_trb) { ret = dwc3_gadget_ep_reclaim_trb_linear(dep, req, event, status); - req->unaligned = false; - req->zero = false; + req->needs_extra_trb = false; } req->request.actual = req->request.length - req->remaining; -- cgit From 09fe1f8d7e2f461275b1cdd832f2cfa5e9be346d Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Wed, 1 Aug 2018 13:32:07 +0300 Subject: usb: dwc3: gadget: track number of TRBs per request This will help us remove the wait_event() from our ->dequeue(). Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/core.h | 3 +++ drivers/usb/dwc3/gadget.c | 6 ++++++ 2 files changed, 9 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index b89d31232028..8405519413a4 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -865,6 +865,7 @@ struct dwc3_hwparams { * @epnum: endpoint number to which this request refers * @trb: pointer to struct dwc3_trb * @trb_dma: DMA address of @trb + * @num_trbs: number of TRBs used by this request * @needs_extra_trb: true when request needs one extra TRB (either due to ZLP * or unaligned OUT) * @direction: IN or OUT direction flag @@ -885,6 +886,8 @@ struct dwc3_request { struct dwc3_trb *trb; dma_addr_t trb_dma; + unsigned num_trbs; + unsigned needs_extra_trb:1; unsigned direction:1; unsigned mapped:1; diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 3d5bd2a4c07f..70a8ff1112bb 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -1046,6 +1046,8 @@ static void dwc3_prepare_one_trb(struct dwc3_ep *dep, req->trb_dma = dwc3_trb_dma_offset(dep, trb); } + req->num_trbs++; + __dwc3_prepare_one_trb(dep, trb, dma, length, chain, node, stream_id, short_not_ok, no_interrupt); } @@ -1080,6 +1082,7 @@ static void dwc3_prepare_one_trb_sg(struct dwc3_ep *dep, /* Now prepare one extra TRB to align transfer size */ trb = &dep->trb_pool[dep->trb_enqueue]; + req->num_trbs++; __dwc3_prepare_one_trb(dep, trb, dwc->bounce_addr, maxp - rem, false, 1, req->request.stream_id, @@ -1124,6 +1127,7 @@ static void dwc3_prepare_one_trb_linear(struct dwc3_ep *dep, /* Now prepare one extra TRB to align transfer size */ trb = &dep->trb_pool[dep->trb_enqueue]; + req->num_trbs++; __dwc3_prepare_one_trb(dep, trb, dwc->bounce_addr, maxp - rem, false, 1, req->request.stream_id, req->request.short_not_ok, @@ -1140,6 +1144,7 @@ static void dwc3_prepare_one_trb_linear(struct dwc3_ep *dep, /* Now prepare one extra TRB to handle ZLP */ trb = &dep->trb_pool[dep->trb_enqueue]; + req->num_trbs++; __dwc3_prepare_one_trb(dep, trb, dwc->bounce_addr, 0, false, 1, req->request.stream_id, req->request.short_not_ok, @@ -2371,6 +2376,7 @@ static int dwc3_gadget_ep_reclaim_completed_trb(struct dwc3_ep *dep, dwc3_ep_inc_deq(dep); trace_dwc3_complete_trb(dep, trb); + req->num_trbs--; /* * If we're in the middle of series of chained TRBs and we -- cgit From c3acd59014148470dc58519870fbc779785b4bf7 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Wed, 1 Aug 2018 13:37:53 +0300 Subject: usb: dwc3: gadget: use num_trbs when skipping TRBs on ->dequeue() Now that we track how many TRBs a request uses, it's easier to skip over them in case of a call to usb_ep_dequeue(). Let's do so and simplify the code a bit. Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/gadget.c | 28 ++++------------------------ 1 file changed, 4 insertions(+), 24 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 70a8ff1112bb..1510490acfa5 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -1502,6 +1502,8 @@ static int dwc3_gadget_ep_dequeue(struct usb_ep *ep, break; } if (r == req) { + int i; + /* wait until it is processed */ dwc3_stop_active_transfer(dep, true); @@ -1539,32 +1541,12 @@ static int dwc3_gadget_ep_dequeue(struct usb_ep *ep, if (!r->trb) goto out0; - if (r->num_pending_sgs) { + for (i = 0; i < r->num_trbs; i++) { struct dwc3_trb *trb; - int i = 0; - - for (i = 0; i < r->num_pending_sgs; i++) { - trb = r->trb + i; - trb->ctrl &= ~DWC3_TRB_CTRL_HWO; - dwc3_ep_inc_deq(dep); - } - - if (r->needs_extra_trb) { - trb = r->trb + r->num_pending_sgs + 1; - trb->ctrl &= ~DWC3_TRB_CTRL_HWO; - dwc3_ep_inc_deq(dep); - } - } else { - struct dwc3_trb *trb = r->trb; + trb = r->trb + i; trb->ctrl &= ~DWC3_TRB_CTRL_HWO; dwc3_ep_inc_deq(dep); - - if (r->needs_extra_trb) { - trb = r->trb + 1; - trb->ctrl &= ~DWC3_TRB_CTRL_HWO; - dwc3_ep_inc_deq(dep); - } } goto out1; } @@ -1575,8 +1557,6 @@ static int dwc3_gadget_ep_dequeue(struct usb_ep *ep, } out1: - /* giveback the request */ - dwc3_gadget_giveback(dep, req, -ECONNRESET); out0: -- cgit From 7746a8dfb3f9c91b3a0b63a1d5c2664410e6498d Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Wed, 1 Aug 2018 13:42:29 +0300 Subject: usb: dwc3: gadget: extract dwc3_gadget_ep_skip_trbs() Extract the logic for skipping over TRBs to its own function. This makes the code slightly more readable and makes it easier to move this call to its final resting place as a following patch. Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/gadget.c | 61 +++++++++++++++++++---------------------------- 1 file changed, 24 insertions(+), 37 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 1510490acfa5..9728978070b7 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -1475,6 +1475,29 @@ static int dwc3_gadget_ep_queue(struct usb_ep *ep, struct usb_request *request, return ret; } +static void dwc3_gadget_ep_skip_trbs(struct dwc3_ep *dep, struct dwc3_request *req) +{ + int i; + + /* + * If request was already started, this means we had to + * stop the transfer. With that we also need to ignore + * all TRBs used by the request, however TRBs can only + * be modified after completion of END_TRANSFER + * command. So what we do here is that we wait for + * END_TRANSFER completion and only after that, we jump + * over TRBs by clearing HWO and incrementing dequeue + * pointer. + */ + for (i = 0; i < req->num_trbs; i++) { + struct dwc3_trb *trb; + + trb = req->trb + i; + trb->ctrl &= ~DWC3_TRB_CTRL_HWO; + dwc3_ep_inc_deq(dep); + } +} + static int dwc3_gadget_ep_dequeue(struct usb_ep *ep, struct usb_request *request) { @@ -1502,38 +1525,8 @@ static int dwc3_gadget_ep_dequeue(struct usb_ep *ep, break; } if (r == req) { - int i; - /* wait until it is processed */ dwc3_stop_active_transfer(dep, true); - - /* - * If request was already started, this means we had to - * stop the transfer. With that we also need to ignore - * all TRBs used by the request, however TRBs can only - * be modified after completion of END_TRANSFER - * command. So what we do here is that we wait for - * END_TRANSFER completion and only after that, we jump - * over TRBs by clearing HWO and incrementing dequeue - * pointer. - * - * Note that we have 2 possible types of transfers here: - * - * i) Linear buffer request - * ii) SG-list based request - * - * SG-list based requests will have r->num_pending_sgs - * set to a valid number (> 0). Linear requests, - * normally use a single TRB. - * - * For each of these two cases, if r->unaligned flag is - * set, one extra TRB has been used to align transfer - * size to wMaxPacketSize. - * - * All of these cases need to be taken into - * consideration so we don't mess up our TRB ring - * pointers. - */ wait_event_lock_irq(dep->wait_end_transfer, !(dep->flags & DWC3_EP_END_TRANSFER_PENDING), dwc->lock); @@ -1541,13 +1534,7 @@ static int dwc3_gadget_ep_dequeue(struct usb_ep *ep, if (!r->trb) goto out0; - for (i = 0; i < r->num_trbs; i++) { - struct dwc3_trb *trb; - - trb = r->trb + i; - trb->ctrl &= ~DWC3_TRB_CTRL_HWO; - dwc3_ep_inc_deq(dep); - } + dwc3_gadget_ep_skip_trbs(dep, r); goto out1; } dev_err(dwc->dev, "request %pK was not queued to %s\n", -- cgit From d5443bbf5fc8f8389cce146b1fc2987cdd229d12 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Wed, 1 Aug 2018 13:53:29 +0300 Subject: usb: dwc3: gadget: introduce cancelled_list This list will host cancelled requests who still have TRBs being processed. Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/core.h | 2 ++ drivers/usb/dwc3/gadget.c | 1 + drivers/usb/dwc3/gadget.h | 15 +++++++++++++++ 3 files changed, 18 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index 8405519413a4..9798c73c09ce 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -646,6 +646,7 @@ struct dwc3_event_buffer { /** * struct dwc3_ep - device side endpoint representation * @endpoint: usb endpoint + * @cancelled_list: list of cancelled requests for this endpoint * @pending_list: list of pending requests for this endpoint * @started_list: list of started requests on this endpoint * @wait_end_transfer: wait_queue_head_t for waiting on End Transfer complete @@ -673,6 +674,7 @@ struct dwc3_event_buffer { */ struct dwc3_ep { struct usb_ep endpoint; + struct list_head cancelled_list; struct list_head pending_list; struct list_head started_list; diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 9728978070b7..17203944d77f 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -2284,6 +2284,7 @@ static int dwc3_gadget_init_endpoint(struct dwc3 *dwc, u8 epnum) INIT_LIST_HEAD(&dep->pending_list); INIT_LIST_HEAD(&dep->started_list); + INIT_LIST_HEAD(&dep->cancelled_list); return 0; } diff --git a/drivers/usb/dwc3/gadget.h b/drivers/usb/dwc3/gadget.h index 2aacd1afd9ff..023a473648eb 100644 --- a/drivers/usb/dwc3/gadget.h +++ b/drivers/usb/dwc3/gadget.h @@ -79,6 +79,21 @@ static inline void dwc3_gadget_move_started_request(struct dwc3_request *req) list_move_tail(&req->list, &dep->started_list); } +/** + * dwc3_gadget_move_cancelled_request - move @req to the cancelled_list + * @req: the request to be moved + * + * Caller should take care of locking. This function will move @req from its + * current list to the endpoint's cancelled_list. + */ +static inline void dwc3_gadget_move_cancelled_request(struct dwc3_request *req) +{ + struct dwc3_ep *dep = req->dep; + + req->started = false; + list_move_tail(&req->list, &dep->cancelled_list); +} + void dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req, int status); -- cgit From d4f1afe5e896c18ae01099a85dab5e1a198bd2a8 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Wed, 1 Aug 2018 13:54:25 +0300 Subject: usb: dwc3: gadget: move requests to cancelled_list Whenever we have a request in flight, we can move it to the cancelled list and later simply iterate over that list and skip over any TRBs we find. Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/gadget.c | 17 ++++++++++++++--- 1 file changed, 14 insertions(+), 3 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 17203944d77f..d5b9db90ca1c 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -1498,6 +1498,17 @@ static void dwc3_gadget_ep_skip_trbs(struct dwc3_ep *dep, struct dwc3_request *r } } +static void dwc3_gadget_ep_cleanup_cancelled_requests(struct dwc3_ep *dep) +{ + struct dwc3_request *req; + struct dwc3_request *tmp; + + list_for_each_entry_safe(req, tmp, &dep->cancelled_list, list) { + dwc3_gadget_ep_skip_trbs(dep, req); + dwc3_gadget_giveback(dep, req, -ECONNRESET); + } +} + static int dwc3_gadget_ep_dequeue(struct usb_ep *ep, struct usb_request *request) { @@ -1534,8 +1545,9 @@ static int dwc3_gadget_ep_dequeue(struct usb_ep *ep, if (!r->trb) goto out0; - dwc3_gadget_ep_skip_trbs(dep, r); - goto out1; + dwc3_gadget_move_cancelled_request(req); + dwc3_gadget_ep_cleanup_cancelled_requests(dep); + goto out0; } dev_err(dwc->dev, "request %pK was not queued to %s\n", request, ep->name); @@ -1543,7 +1555,6 @@ static int dwc3_gadget_ep_dequeue(struct usb_ep *ep, goto out0; } -out1: dwc3_gadget_giveback(dep, req, -ECONNRESET); out0: -- cgit From fec9095bdef4e7c988adb603d0d4f92ee735d4a1 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Wed, 1 Aug 2018 13:56:50 +0300 Subject: usb: dwc3: gadget: remove wait_end_transfer Now that we have a list of cancelled requests, we can skip over TRBs when END_TRANSFER command completes. Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/core.h | 3 --- drivers/usb/dwc3/gadget.c | 40 +--------------------------------------- 2 files changed, 1 insertion(+), 42 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index 9798c73c09ce..58f4aa5e3443 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -649,7 +649,6 @@ struct dwc3_event_buffer { * @cancelled_list: list of cancelled requests for this endpoint * @pending_list: list of pending requests for this endpoint * @started_list: list of started requests on this endpoint - * @wait_end_transfer: wait_queue_head_t for waiting on End Transfer complete * @lock: spinlock for endpoint request queue traversal * @regs: pointer to first endpoint register * @trb_pool: array of transaction buffers @@ -678,8 +677,6 @@ struct dwc3_ep { struct list_head pending_list; struct list_head started_list; - wait_queue_head_t wait_end_transfer; - spinlock_t lock; void __iomem *regs; diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index d5b9db90ca1c..a61bc9928a1a 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -647,8 +647,6 @@ static int __dwc3_gadget_ep_enable(struct dwc3_ep *dep, unsigned int action) reg |= DWC3_DALEPENA_EP(dep->number); dwc3_writel(dwc->regs, DWC3_DALEPENA, reg); - init_waitqueue_head(&dep->wait_end_transfer); - if (usb_endpoint_xfer_control(desc)) goto out; @@ -1538,15 +1536,11 @@ static int dwc3_gadget_ep_dequeue(struct usb_ep *ep, if (r == req) { /* wait until it is processed */ dwc3_stop_active_transfer(dep, true); - wait_event_lock_irq(dep->wait_end_transfer, - !(dep->flags & DWC3_EP_END_TRANSFER_PENDING), - dwc->lock); if (!r->trb) goto out0; dwc3_gadget_move_cancelled_request(req); - dwc3_gadget_ep_cleanup_cancelled_requests(dep); goto out0; } dev_err(dwc->dev, "request %pK was not queued to %s\n", @@ -2051,8 +2045,6 @@ static int dwc3_gadget_stop(struct usb_gadget *g) { struct dwc3 *dwc = gadget_to_dwc(g); unsigned long flags; - int epnum; - u32 tmo_eps = 0; spin_lock_irqsave(&dwc->lock, flags); @@ -2061,36 +2053,6 @@ static int dwc3_gadget_stop(struct usb_gadget *g) __dwc3_gadget_stop(dwc); - for (epnum = 2; epnum < DWC3_ENDPOINTS_NUM; epnum++) { - struct dwc3_ep *dep = dwc->eps[epnum]; - int ret; - - if (!dep) - continue; - - if (!(dep->flags & DWC3_EP_END_TRANSFER_PENDING)) - continue; - - ret = wait_event_interruptible_lock_irq_timeout(dep->wait_end_transfer, - !(dep->flags & DWC3_EP_END_TRANSFER_PENDING), - dwc->lock, msecs_to_jiffies(5)); - - if (ret <= 0) { - /* Timed out or interrupted! There's nothing much - * we can do so we just log here and print which - * endpoints timed out at the end. - */ - tmo_eps |= 1 << epnum; - dep->flags &= DWC3_EP_END_TRANSFER_PENDING; - } - } - - if (tmo_eps) { - dev_err(dwc->dev, - "end transfer timed out on endpoints 0x%x [bitmap]\n", - tmo_eps); - } - out: dwc->gadget_driver = NULL; spin_unlock_irqrestore(&dwc->lock, flags); @@ -2589,7 +2551,7 @@ static void dwc3_endpoint_interrupt(struct dwc3 *dwc, if (cmd == DWC3_DEPCMD_ENDTRANSFER) { dep->flags &= ~DWC3_EP_END_TRANSFER_PENDING; - wake_up(&dep->wait_end_transfer); + dwc3_gadget_ep_cleanup_cancelled_requests(dep); } break; case DWC3_DEPEVT_STREAMEVT: -- cgit From 25abad6a0584c3c08e2859738d23cbc53597179d Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Tue, 14 Aug 2018 10:41:19 +0300 Subject: usb: dwc3: gadget: return errors from __dwc3_gadget_start_isoc() Sometimes, errors happen when kicking transfers from __dwc3_gadget_start_isoc(). In those cases, we need to pass along the error so gadget driver can make informed decisions. Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/gadget.c | 25 +++++++++++-------------- 1 file changed, 11 insertions(+), 14 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index a61bc9928a1a..7e0f8ff5946d 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -1308,7 +1308,7 @@ static int __dwc3_gadget_get_frame(struct dwc3 *dwc) * Synopsys STAR 9001202023: Wrong microframe number for isochronous IN * endpoints. */ -static void dwc3_gadget_start_isoc_quirk(struct dwc3_ep *dep) +static int dwc3_gadget_start_isoc_quirk(struct dwc3_ep *dep) { int cmd_status = 0; bool test0; @@ -1338,7 +1338,7 @@ static void dwc3_gadget_start_isoc_quirk(struct dwc3_ep *dep) if (cmd_status && cmd_status != -EAGAIN) { dep->start_cmd_status = 0; dep->combo_num = 0; - return; + return 0; } /* Store the first test status */ @@ -1353,7 +1353,7 @@ static void dwc3_gadget_start_isoc_quirk(struct dwc3_ep *dep) */ if (cmd_status == 0) { dwc3_stop_active_transfer(dep, true); - return; + return 0; } } @@ -1378,10 +1378,10 @@ static void dwc3_gadget_start_isoc_quirk(struct dwc3_ep *dep) dep->start_cmd_status = 0; dep->combo_num = 0; - __dwc3_gadget_kick_transfer(dep); + return __dwc3_gadget_kick_transfer(dep); } -static void __dwc3_gadget_start_isoc(struct dwc3_ep *dep) +static int __dwc3_gadget_start_isoc(struct dwc3_ep *dep) { struct dwc3 *dwc = dep->dwc; @@ -1389,7 +1389,7 @@ static void __dwc3_gadget_start_isoc(struct dwc3_ep *dep) dev_info(dep->dwc->dev, "%s: ran out of requests\n", dep->name); dep->flags |= DWC3_EP_PENDING_REQUEST; - return; + return -EAGAIN; } if (!dwc->dis_start_transfer_quirk && dwc3_is_usb31(dwc) && @@ -1398,14 +1398,12 @@ static void __dwc3_gadget_start_isoc(struct dwc3_ep *dep) dwc->version_type >= DWC31_VERSIONTYPE_EA01 && dwc->version_type <= DWC31_VERSIONTYPE_EA06))) { - if (dwc->gadget.speed <= USB_SPEED_HIGH && dep->direction) { - dwc3_gadget_start_isoc_quirk(dep); - return; - } + if (dwc->gadget.speed <= USB_SPEED_HIGH && dep->direction) + return dwc3_gadget_start_isoc_quirk(dep); } dep->frame_number = DWC3_ALIGN_FRAME(dep); - __dwc3_gadget_kick_transfer(dep); + return __dwc3_gadget_kick_transfer(dep); } static int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req) @@ -1446,8 +1444,7 @@ static int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req) if ((dep->flags & DWC3_EP_PENDING_REQUEST)) { if (!(dep->flags & DWC3_EP_TRANSFER_STARTED)) { - __dwc3_gadget_start_isoc(dep); - return 0; + return __dwc3_gadget_start_isoc(dep); } } } @@ -2513,7 +2510,7 @@ static void dwc3_gadget_endpoint_transfer_not_ready(struct dwc3_ep *dep, const struct dwc3_event_depevt *event) { dwc3_gadget_endpoint_frame_from_event(dep, event); - __dwc3_gadget_start_isoc(dep); + (void) __dwc3_gadget_start_isoc(dep); } static void dwc3_endpoint_interrupt(struct dwc3 *dwc, -- cgit From 1517265228b4ea6b89379fa8e134e62f75ea1dfe Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Wed, 15 Aug 2018 08:30:59 +0300 Subject: usb: dwc3: trace: log ep commands in hex They are much more useful in hexadecimal than in decimal. Moreover, generic commands are already logged in hex. Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/trace.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/trace.h b/drivers/usb/dwc3/trace.h index f22714cce070..50fb6f2d92dd 100644 --- a/drivers/usb/dwc3/trace.h +++ b/drivers/usb/dwc3/trace.h @@ -199,7 +199,7 @@ DECLARE_EVENT_CLASS(dwc3_log_gadget_ep_cmd, __entry->param2 = params->param2; __entry->cmd_status = cmd_status; ), - TP_printk("%s: cmd '%s' [%d] params %08x %08x %08x --> status: %s", + TP_printk("%s: cmd '%s' [%x] params %08x %08x %08x --> status: %s", __get_str(name), dwc3_gadget_ep_cmd_string(__entry->cmd), __entry->cmd, __entry->param0, __entry->param1, __entry->param2, -- cgit From 3451f6affaef8c2a0a7a6a5960b86eac9d2ff2f7 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Wed, 15 Aug 2018 08:34:44 +0300 Subject: usb: dwc3: gadget: remove unnecessary dev_info() Running out of requests on isochronous endpoints is part of normal operation. We don't really need to know about it every time it happens. Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/gadget.c | 2 -- 1 file changed, 2 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 7e0f8ff5946d..e94971a7f468 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -1386,8 +1386,6 @@ static int __dwc3_gadget_start_isoc(struct dwc3_ep *dep) struct dwc3 *dwc = dep->dwc; if (list_empty(&dep->pending_list)) { - dev_info(dep->dwc->dev, "%s: ran out of requests\n", - dep->name); dep->flags |= DWC3_EP_PENDING_REQUEST; return -EAGAIN; } -- cgit From d53701067f048b8b11635e964b6d3bd9a248c622 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Tue, 14 Aug 2018 10:42:43 +0300 Subject: usb: dwc3: gadget: check if dep->frame_number is still valid Gadget driver may take an unbounded amount of time to queue requests after XferNotReady. This is important for isochronous endpoints which need to be started for a specific (micro-)frame. If we fail to start a transfer for isochronous endpoint, let's try queueing to a future interval and see if that helps. We will stop trying if we fail a start transfer for 5 intervals in the future. Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/core.h | 1 + drivers/usb/dwc3/gadget.c | 15 ++++++++++++--- 2 files changed, 13 insertions(+), 3 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index 58f4aa5e3443..15c07b2b5866 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -37,6 +37,7 @@ #define DWC3_EP0_SETUP_SIZE 512 #define DWC3_ENDPOINTS_NUM 32 #define DWC3_XHCI_RESOURCES_NUM 2 +#define DWC3_ISOC_MAX_RETRIES 5 #define DWC3_SCRATCHBUF_SIZE 4096 /* each buffer is assumed to be 4KiB */ #define DWC3_EVENT_BUFFERS_SIZE 4096 diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index e94971a7f468..c4e91c6d4fce 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -27,7 +27,7 @@ #include "gadget.h" #include "io.h" -#define DWC3_ALIGN_FRAME(d) (((d)->frame_number + (d)->interval) \ +#define DWC3_ALIGN_FRAME(d, n) (((d)->frame_number + ((d)->interval * (n))) \ & ~((d)->interval - 1)) /** @@ -1384,6 +1384,8 @@ static int dwc3_gadget_start_isoc_quirk(struct dwc3_ep *dep) static int __dwc3_gadget_start_isoc(struct dwc3_ep *dep) { struct dwc3 *dwc = dep->dwc; + int ret; + int i; if (list_empty(&dep->pending_list)) { dep->flags |= DWC3_EP_PENDING_REQUEST; @@ -1400,8 +1402,15 @@ static int __dwc3_gadget_start_isoc(struct dwc3_ep *dep) return dwc3_gadget_start_isoc_quirk(dep); } - dep->frame_number = DWC3_ALIGN_FRAME(dep); - return __dwc3_gadget_kick_transfer(dep); + for (i = 0; i < DWC3_ISOC_MAX_RETRIES; i++) { + dep->frame_number = DWC3_ALIGN_FRAME(dep, i + 1); + + ret = __dwc3_gadget_kick_transfer(dep); + if (ret != -EAGAIN) + break; + } + + return ret; } static int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req) -- cgit From 30c7ca9350048486ab32fdb9f5f6ed0603bba39a Mon Sep 17 00:00:00 2001 From: David Disseldorp Date: Fri, 23 Nov 2018 18:36:12 +0100 Subject: scsi: target: drop unnecessary get_fabric_name() accessor from fabric_ops All fabrics return a const string. In all cases *except* iSCSI the get_fabric_name() string matches fabric_ops.name. Both fabric_ops.get_fabric_name() and fabric_ops.name are user-facing, with the former being used for PR/ALUA state and the latter for ConfigFS (config/target/$name), so we unfortunately need to keep both strings around for now. Replace the useless .get_fabric_name() accessor function with a const string fabric_name member variable. Signed-off-by: David Disseldorp Reviewed-by: Christoph Hellwig Signed-off-by: Martin K. Petersen --- drivers/usb/gadget/function/f_tcm.c | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/function/f_tcm.c b/drivers/usb/gadget/function/f_tcm.c index 106988a6661a..1a03f4975dab 100644 --- a/drivers/usb/gadget/function/f_tcm.c +++ b/drivers/usb/gadget/function/f_tcm.c @@ -1256,11 +1256,6 @@ static int usbg_check_false(struct se_portal_group *se_tpg) return 0; } -static char *usbg_get_fabric_name(void) -{ - return "usb_gadget"; -} - static char *usbg_get_fabric_wwn(struct se_portal_group *se_tpg) { struct usbg_tpg *tpg = container_of(se_tpg, @@ -1719,7 +1714,7 @@ static int usbg_check_stop_free(struct se_cmd *se_cmd) static const struct target_core_fabric_ops usbg_ops = { .module = THIS_MODULE, .name = "usb_gadget", - .get_fabric_name = usbg_get_fabric_name, + .fabric_name = "usb_gadget", .tpg_get_wwn = usbg_get_fabric_wwn, .tpg_get_tag = usbg_get_tag, .tpg_check_demo_mode = usbg_check_true, -- cgit From 59a206b4499edf4c54fd53983f0e366eef052b05 Mon Sep 17 00:00:00 2001 From: David Disseldorp Date: Fri, 23 Nov 2018 18:36:13 +0100 Subject: scsi: target: replace fabric_ops.name with fabric_alias iscsi_target_mod is the only LIO fabric where fabric_ops.name differs from the fabric_ops.fabric_name string. fabric_ops.name is used when matching target/$fabric ConfigFS create paths, so rename it .fabric_alias and fallback to target/$fabric vs .fabric_name comparison if .fabric_alias isn't initialised. iscsi_target_mod is the only fabric module to set .fabric_alias . All other fabric modules rely on .fabric_name matching and can drop the duplicate string. Signed-off-by: David Disseldorp Reviewed-by: Christoph Hellwig Signed-off-by: Martin K. Petersen --- drivers/usb/gadget/function/f_tcm.c | 1 - 1 file changed, 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/function/f_tcm.c b/drivers/usb/gadget/function/f_tcm.c index 1a03f4975dab..34f5982cab78 100644 --- a/drivers/usb/gadget/function/f_tcm.c +++ b/drivers/usb/gadget/function/f_tcm.c @@ -1713,7 +1713,6 @@ static int usbg_check_stop_free(struct se_cmd *se_cmd) static const struct target_core_fabric_ops usbg_ops = { .module = THIS_MODULE, - .name = "usb_gadget", .fabric_name = "usb_gadget", .tpg_get_wwn = usbg_get_fabric_wwn, .tpg_get_tag = usbg_get_tag, -- cgit From a3dd034a1707490119f32bd0c50e6047e42d2517 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Wed, 28 Nov 2018 13:45:34 +0200 Subject: ACPI / scan: Create platform device for INT3515 ACPI nodes The ACPI device with INT3515 _HID is representing a complex USB PD hardware infrastructure which includes several I2C slave ICs. We add an ID to the I2C multi instantiate list to enumerate all I2C slaves correctly. Signed-off-by: Andy Shevchenko Reviewed-by: Heikki Krogerus Reviewed-by: Hans de Goede Acked-by: Heikki Krogerus Acked-by: Rafael J. Wysocki --- drivers/usb/typec/tps6598x.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/typec/tps6598x.c b/drivers/usb/typec/tps6598x.c index c84c8c189e90..1c0033ad8738 100644 --- a/drivers/usb/typec/tps6598x.c +++ b/drivers/usb/typec/tps6598x.c @@ -501,19 +501,19 @@ static int tps6598x_remove(struct i2c_client *client) return 0; } -static const struct acpi_device_id tps6598x_acpi_match[] = { - { "INT3515", 0 }, +static const struct i2c_device_id tps6598x_id[] = { + { "tps6598x" }, { } }; -MODULE_DEVICE_TABLE(acpi, tps6598x_acpi_match); +MODULE_DEVICE_TABLE(i2c, tps6598x_id); static struct i2c_driver tps6598x_i2c_driver = { .driver = { .name = "tps6598x", - .acpi_match_table = tps6598x_acpi_match, }, .probe_new = tps6598x_probe, .remove = tps6598x_remove, + .id_table = tps6598x_id, }; module_i2c_driver(tps6598x_i2c_driver); -- cgit From e8603076f5404cc103869a62f319bc8a4797cc50 Mon Sep 17 00:00:00 2001 From: JackyChou Date: Fri, 30 Nov 2018 14:31:21 +0800 Subject: USB: serial: mos7840: clean up register handling In the read/write function, set port 2 independently in the 2-port case. When setting the offset of port registers, the offset between port 1 and other ports is different, so port 1 is set independently. Then in the rest of ports, the port 2 between 2-ports case and 4-ports case is different, so port 2 in 2-ports case is set independently. Specifically, port 2 in the 2-port case maps to the registers used by port 3 in the 4-port case. Signed-off-by: JackyChou [ johan: simplify register-offset handling at port probe, add a comment and amend commit message ] Signed-off-by: Johan Hovold --- drivers/usb/serial/mos7840.c | 48 +++++++++++++++----------------------------- 1 file changed, 16 insertions(+), 32 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c index bfbf75b36349..4159d3195388 100644 --- a/drivers/usb/serial/mos7840.c +++ b/drivers/usb/serial/mos7840.c @@ -298,15 +298,10 @@ static int mos7840_set_uart_reg(struct usb_serial_port *port, __u16 reg, val = val & 0x00ff; /* For the UART control registers, the application number need to be Or'ed */ - if (port->serial->num_ports == 4) { + if (port->serial->num_ports == 2 && port->port_number != 0) + val |= ((__u16)port->port_number + 2) << 8; + else val |= ((__u16)port->port_number + 1) << 8; - } else { - if (port->port_number == 0) { - val |= ((__u16)port->port_number + 1) << 8; - } else { - val |= ((__u16)port->port_number + 2) << 8; - } - } dev_dbg(&port->dev, "%s application number is %x\n", __func__, val); return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), MCS_WRREQ, MCS_WR_RTYPE, val, reg, NULL, 0, @@ -332,15 +327,10 @@ static int mos7840_get_uart_reg(struct usb_serial_port *port, __u16 reg, return -ENOMEM; /* Wval is same as application number */ - if (port->serial->num_ports == 4) { + if (port->serial->num_ports == 2 && port->port_number != 0) + Wval = ((__u16)port->port_number + 2) << 8; + else Wval = ((__u16)port->port_number + 1) << 8; - } else { - if (port->port_number == 0) { - Wval = ((__u16)port->port_number + 1) << 8; - } else { - Wval = ((__u16)port->port_number + 2) << 8; - } - } dev_dbg(&port->dev, "%s application number is %x\n", __func__, Wval); ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), MCS_RDREQ, MCS_RD_RTYPE, Wval, reg, buf, VENDOR_READ_LENGTH, @@ -2127,22 +2117,16 @@ static int mos7840_port_probe(struct usb_serial_port *port) mos7840_port->SpRegOffset = 0x0; mos7840_port->ControlRegOffset = 0x1; mos7840_port->DcrRegOffset = 0x4; - } else if ((mos7840_port->port_num == 2) && (serial->num_ports == 4)) { - mos7840_port->SpRegOffset = 0x8; - mos7840_port->ControlRegOffset = 0x9; - mos7840_port->DcrRegOffset = 0x16; - } else if ((mos7840_port->port_num == 2) && (serial->num_ports == 2)) { - mos7840_port->SpRegOffset = 0xa; - mos7840_port->ControlRegOffset = 0xb; - mos7840_port->DcrRegOffset = 0x19; - } else if ((mos7840_port->port_num == 3) && (serial->num_ports == 4)) { - mos7840_port->SpRegOffset = 0xa; - mos7840_port->ControlRegOffset = 0xb; - mos7840_port->DcrRegOffset = 0x19; - } else if ((mos7840_port->port_num == 4) && (serial->num_ports == 4)) { - mos7840_port->SpRegOffset = 0xc; - mos7840_port->ControlRegOffset = 0xd; - mos7840_port->DcrRegOffset = 0x1c; + } else { + u8 phy_num = mos7840_port->port_num; + + /* Port 2 in the 2-port case uses registers of port 3 */ + if (serial->num_ports == 2) + phy_num = 3; + + mos7840_port->SpRegOffset = 0x8 + 2 * (phy_num - 2); + mos7840_port->ControlRegOffset = 0x9 + 2 * (phy_num - 2); + mos7840_port->DcrRegOffset = 0x16 + 3 * (phy_num - 2); } mos7840_dump_serial_port(port, mos7840_port); mos7840_set_port_private(port, mos7840_port); -- cgit From 32899682cf457de5c091ee7dbbee34ad9bf2f992 Mon Sep 17 00:00:00 2001 From: JackyChou Date: Fri, 30 Nov 2018 14:31:22 +0800 Subject: USB: serial: mos7840: add a product ID for the new product Add a new PID 0x7843 to the driver. Let the new products be able to set up 3 serial ports with the driver. Note that this depends on e8603076f540 ("USB: serial: mos7840: clean up register handling"). Signed-off-by: JackyChou [ johan: mention dependency in case anyone wants to backport this ] Signed-off-by: Johan Hovold --- drivers/usb/serial/mos7840.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c index 4159d3195388..6ff6d67b6d5a 100644 --- a/drivers/usb/serial/mos7840.c +++ b/drivers/usb/serial/mos7840.c @@ -94,6 +94,7 @@ /* The native mos7840/7820 component */ #define USB_VENDOR_ID_MOSCHIP 0x9710 #define MOSCHIP_DEVICE_ID_7840 0x7840 +#define MOSCHIP_DEVICE_ID_7843 0x7843 #define MOSCHIP_DEVICE_ID_7820 0x7820 #define MOSCHIP_DEVICE_ID_7810 0x7810 /* The native component can have its vendor/device id's overridden @@ -176,6 +177,7 @@ enum mos7840_flag { static const struct usb_device_id id_table[] = { {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7840)}, + {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7843)}, {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7820)}, {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7810)}, {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_2)}, @@ -2028,7 +2030,8 @@ static int mos7840_probe(struct usb_serial *serial, int device_type; if (product == MOSCHIP_DEVICE_ID_7810 || - product == MOSCHIP_DEVICE_ID_7820) { + product == MOSCHIP_DEVICE_ID_7820 || + product == MOSCHIP_DEVICE_ID_7843) { device_type = product; goto out; } @@ -2062,7 +2065,10 @@ static int mos7840_calc_num_ports(struct usb_serial *serial, int device_type = (unsigned long)usb_get_serial_data(serial); int num_ports; - num_ports = (device_type >> 4) & 0x000F; + if (device_type == MOSCHIP_DEVICE_ID_7843) + num_ports = 3; + else + num_ports = (device_type >> 4) & 0x000F; /* * num_ports is currently never zero as device_type is one of -- cgit From a7351807bd8b5db0306ccd6977f8c13722731dd5 Mon Sep 17 00:00:00 2001 From: Anurag Kumar Vulisha Date: Sat, 1 Dec 2018 16:43:25 +0530 Subject: usb: dwc3: update stream id in depcmd For stream capable endpoints, stream id related information needs to be updated into DEPCMD while issuing START TRANSFER. This patch does the same. Signed-off-by: Anurag Kumar Vulisha Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/gadget.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index c4e91c6d4fce..d54d434dc986 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -1235,6 +1235,9 @@ static int __dwc3_gadget_kick_transfer(struct dwc3_ep *dep) params.param1 = lower_32_bits(req->trb_dma); cmd = DWC3_DEPCMD_STARTTRANSFER; + if (dep->stream_capable) + cmd |= DWC3_DEPCMD_PARAM(req->request.stream_id); + if (usb_endpoint_xfer_isoc(dep->endpoint.desc)) cmd |= DWC3_DEPCMD_PARAM(dep->frame_number); } else { -- cgit From 26d62b4d10ad54622cd16b4871ee635f0ee287b6 Mon Sep 17 00:00:00 2001 From: Anurag Kumar Vulisha Date: Sat, 1 Dec 2018 16:43:27 +0530 Subject: usb: dwc3: don't issue no-op trb for stream capable endpoints The stream capable endpoints require stream id to be given when issuing START TRANSFER. While issuing no-op trb the stream id is not yet known, so don't issue no-op trb's on stream capable endpoints. Signed-off-by: Anurag Kumar Vulisha Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/gadget.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index d54d434dc986..08dea6fdb4a8 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -670,7 +670,7 @@ static int __dwc3_gadget_ep_enable(struct dwc3_ep *dep, unsigned int action) * Issue StartTransfer here with no-op TRB so we can always rely on No * Response Update Transfer command. */ - if (usb_endpoint_xfer_bulk(desc) || + if ((usb_endpoint_xfer_bulk(desc) && !dep->stream_capable) || usb_endpoint_xfer_int(desc)) { struct dwc3_gadget_ep_cmd_params params; struct dwc3_trb *trb; -- cgit From b7a4fbe2300a8965ea760c7e871507b84aea17f6 Mon Sep 17 00:00:00 2001 From: Anurag Kumar Vulisha Date: Sat, 1 Dec 2018 16:43:29 +0530 Subject: usb: dwc3: Correct the logic for checking TRB full in __dwc3_prepare_one_trb() Availability of TRB's is calculated using dwc3_calc_trbs_left(), which determines total available TRB's based on the HWO bit set in a TRB. In the present code, __dwc3_prepare_one_trb() is called with a TRB which needs to be prepared for transfer. This __dwc3_prepare_one_trb() calls dwc3_calc_trbs_left() to determine total available TRBs and set IOC bit if the total available TRBs are zero. Since the present working TRB (which is passed as an argument to __dwc3_prepare_one_trb() ) doesn't yet have the HWO bit set before calling dwc3_calc_trbs_left(), there are chances that dwc3_calc_trbs_left() wrongly calculates this present working TRB as free(since the HWO bit is not yet set) and returns the total available TRBs as greater than zero (including the present working TRB). This could be a problem. This patch corrects the above mentioned problem in __dwc3_prepare_one_trb() by increementing the dep->trb_enqueue at the last (after preparing the TRB) instead of increementing at the start and setting the IOC bit only if the total available TRBs returned by dwc3_calc_trbs_left() is 1 . Since we are increementing the dep->trb_enqueue at the last, the present working TRB is also considered as available by dwc3_calc_trbs_left() and non zero value is returned . So, according to the modified logic, when the total available TRBs is equal to 1 that means the total available TRBs in the pool are 0. Signed-off-by: Anurag Kumar Vulisha Reviewed-by: Thinh Nguyen Tested-by: Tejas Joglekar Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/gadget.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 08dea6fdb4a8..38d6df98e9ce 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -917,8 +917,6 @@ static void __dwc3_prepare_one_trb(struct dwc3_ep *dep, struct dwc3_trb *trb, struct usb_gadget *gadget = &dwc->gadget; enum usb_device_speed speed = gadget->speed; - dwc3_ep_inc_enq(dep); - trb->size = DWC3_TRB_SIZE_LENGTH(length); trb->bpl = lower_32_bits(dma); trb->bph = upper_32_bits(dma); @@ -997,7 +995,7 @@ static void __dwc3_prepare_one_trb(struct dwc3_ep *dep, struct dwc3_trb *trb, } if ((!no_interrupt && !chain) || - (dwc3_calc_trbs_left(dep) == 0)) + (dwc3_calc_trbs_left(dep) == 1)) trb->ctrl |= DWC3_TRB_CTRL_IOC; if (chain) @@ -1008,6 +1006,8 @@ static void __dwc3_prepare_one_trb(struct dwc3_ep *dep, struct dwc3_trb *trb, trb->ctrl |= DWC3_TRB_CTRL_HWO; + dwc3_ep_inc_enq(dep); + trace_dwc3_prepare_trb(dep, trb); } -- cgit From 35a6054132286a4ab92b536595093b82e6bdfcbc Mon Sep 17 00:00:00 2001 From: Marek Szyprowski Date: Tue, 20 Nov 2018 16:38:15 +0100 Subject: usb: dwc2: Disable power down feature on Samsung SoCs Power down feature of DWC2 module integrated in Samsung SoCs doesn't work properly or needs some additional handling in PHY or SoC glue layer, so disable it for now. Without disabling power down, DWC2 causes random memory trashes and fails enumeration if there is no USB link to host on driver probe. Fixes: 03ea6d6e9e1ff1 ("usb: dwc2: Enable power down") Acked-by: Minas Harutyunyan Signed-off-by: Marek Szyprowski Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/params.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc2/params.c b/drivers/usb/dwc2/params.c index 7c1b6938f212..266157ae179a 100644 --- a/drivers/usb/dwc2/params.c +++ b/drivers/usb/dwc2/params.c @@ -71,6 +71,13 @@ static void dwc2_set_his_params(struct dwc2_hsotg *hsotg) p->power_down = false; } +static void dwc2_set_s3c6400_params(struct dwc2_hsotg *hsotg) +{ + struct dwc2_core_params *p = &hsotg->params; + + p->power_down = 0; +} + static void dwc2_set_rk_params(struct dwc2_hsotg *hsotg) { struct dwc2_core_params *p = &hsotg->params; @@ -151,7 +158,8 @@ const struct of_device_id dwc2_of_match_table[] = { { .compatible = "lantiq,arx100-usb", .data = dwc2_set_ltq_params }, { .compatible = "lantiq,xrx200-usb", .data = dwc2_set_ltq_params }, { .compatible = "snps,dwc2" }, - { .compatible = "samsung,s3c6400-hsotg" }, + { .compatible = "samsung,s3c6400-hsotg", + .data = dwc2_set_s3c6400_params }, { .compatible = "amlogic,meson8-usb", .data = dwc2_set_amlogic_params }, { .compatible = "amlogic,meson8b-usb", -- cgit From 36b25b69c2c13ebe3d6f80c11de537cb7d1c43f0 Mon Sep 17 00:00:00 2001 From: "Hsin-Yi, Wang" Date: Thu, 29 Nov 2018 11:16:27 +0800 Subject: usb/mtu3: power down device ip at setup Originally, when dr_mode is USB_DR_MODE_HOST, it didn't power down device ip, so host ip sleep will fail at ssusb_host_disable. Power down device ip at ssusb_host_setup. Acked-by: Chunfeng Yun Signed-off-by: Hsin-Yi, Wang Signed-off-by: Felipe Balbi --- drivers/usb/mtu3/mtu3_plat.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/mtu3/mtu3_plat.c b/drivers/usb/mtu3/mtu3_plat.c index 46551f6d16fd..e086630e41a9 100644 --- a/drivers/usb/mtu3/mtu3_plat.c +++ b/drivers/usb/mtu3/mtu3_plat.c @@ -200,6 +200,14 @@ static void ssusb_ip_sw_reset(struct ssusb_mtk *ssusb) mtu3_setbits(ssusb->ippc_base, U3D_SSUSB_IP_PW_CTRL0, SSUSB_IP_SW_RST); udelay(1); mtu3_clrbits(ssusb->ippc_base, U3D_SSUSB_IP_PW_CTRL0, SSUSB_IP_SW_RST); + + /* + * device ip may be powered on in firmware/BROM stage before entering + * kernel stage; + * power down device ip, otherwise ip-sleep will fail when working as + * host only mode + */ + mtu3_setbits(ssusb->ippc_base, U3D_SSUSB_IP_PW_CTRL2, SSUSB_IP_DEV_PDN); } /* ignore the error if the clock does not exist */ -- cgit From 4f7371314e57b21725ef208e9a37dd58d3f5d974 Mon Sep 17 00:00:00 2001 From: Chunfeng Yun Date: Thu, 29 Nov 2018 10:34:32 +0800 Subject: usb: mtu3: remove QMU checksum The QMU checksum calculation is redundant, mostly used by debug, so remove it here. Signed-off-by: Chunfeng Yun Signed-off-by: Felipe Balbi --- drivers/usb/mtu3/mtu3_core.c | 2 -- drivers/usb/mtu3/mtu3_qmu.c | 26 -------------------------- 2 files changed, 28 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/mtu3/mtu3_core.c b/drivers/usb/mtu3/mtu3_core.c index ae70b9bfd797..3dce5fd9887d 100644 --- a/drivers/usb/mtu3/mtu3_core.c +++ b/drivers/usb/mtu3/mtu3_core.c @@ -592,8 +592,6 @@ static void mtu3_regs_init(struct mtu3 *mtu) mtu3_clrbits(mbase, U3D_LINK_RESET_INFO, WTCHRP_MSK); /* U2/U3 detected by HW */ mtu3_writel(mbase, U3D_DEVICE_CONF, 0); - /* enable QMU 16B checksum */ - mtu3_setbits(mbase, U3D_QCR0, QMU_CS16B_EN); /* vbus detected by HW */ mtu3_clrbits(mbase, U3D_MISC_CTRL, VBUS_FRC_EN | VBUS_ON); } diff --git a/drivers/usb/mtu3/mtu3_qmu.c b/drivers/usb/mtu3/mtu3_qmu.c index ff62ba232177..73ac042c45a8 100644 --- a/drivers/usb/mtu3/mtu3_qmu.c +++ b/drivers/usb/mtu3/mtu3_qmu.c @@ -154,27 +154,6 @@ void mtu3_gpd_ring_free(struct mtu3_ep *mep) memset(ring, 0, sizeof(*ring)); } -/* - * calculate check sum of a gpd or bd - * add "noinline" and "mb" to prevent wrong calculation - */ -static noinline u8 qmu_calc_checksum(u8 *data) -{ - u8 chksum = 0; - int i; - - data[1] = 0x0; /* set checksum to 0 */ - - mb(); /* ensure the gpd/bd is really up-to-date */ - for (i = 0; i < QMU_CHECKSUM_LEN; i++) - chksum += data[i]; - - /* Default: HWO=1, @flag[bit0] */ - chksum += 1; - - return 0xFF - chksum; -} - void mtu3_qmu_resume(struct mtu3_ep *mep) { struct mtu3 *mtu = mep->mtu; @@ -260,7 +239,6 @@ static int mtu3_prepare_tx_gpd(struct mtu3_ep *mep, struct mtu3_request *mreq) if (req->zero) gpd->ext_flag |= GPD_EXT_FLAG_ZLP; - gpd->chksum = qmu_calc_checksum((u8 *)gpd); gpd->flag |= GPD_FLAGS_HWO; mreq->gpd = gpd; @@ -295,7 +273,6 @@ static int mtu3_prepare_rx_gpd(struct mtu3_ep *mep, struct mtu3_request *mreq) gpd->next_gpd = cpu_to_le32(lower_32_bits(enq_dma)); ext_addr |= GPD_EXT_NGP(upper_32_bits(enq_dma)); gpd->rx_ext_addr = cpu_to_le16(ext_addr); - gpd->chksum = qmu_calc_checksum((u8 *)gpd); gpd->flag |= GPD_FLAGS_HWO; mreq->gpd = gpd; @@ -323,7 +300,6 @@ int mtu3_qmu_start(struct mtu3_ep *mep) /* set QMU start address */ write_txq_start_addr(mbase, epnum, ring->dma); mtu3_setbits(mbase, MU3D_EP_TXCR0(epnum), TX_DMAREQEN); - mtu3_setbits(mbase, U3D_QCR0, QMU_TX_CS_EN(epnum)); /* send zero length packet according to ZLP flag in GPD */ mtu3_setbits(mbase, U3D_QCR1, QMU_TX_ZLP(epnum)); mtu3_writel(mbase, U3D_TQERRIESR0, @@ -338,7 +314,6 @@ int mtu3_qmu_start(struct mtu3_ep *mep) } else { write_rxq_start_addr(mbase, epnum, ring->dma); mtu3_setbits(mbase, MU3D_EP_RXCR0(epnum), RX_DMAREQEN); - mtu3_setbits(mbase, U3D_QCR0, QMU_RX_CS_EN(epnum)); /* don't expect ZLP */ mtu3_clrbits(mbase, U3D_QCR3, QMU_RX_ZLP(epnum)); /* move to next GPD when receive ZLP */ @@ -441,7 +416,6 @@ static void qmu_tx_zlp_error_handler(struct mtu3 *mtu, u8 epnum) /* by pass the current GDP */ gpd_current->flag |= GPD_FLAGS_BPS; - gpd_current->chksum = qmu_calc_checksum((u8 *)gpd_current); gpd_current->flag |= GPD_FLAGS_HWO; /*enable DMAREQEN, switch back to QMU mode */ -- cgit From 68c750cf4504f8179188db36057834ba00afb183 Mon Sep 17 00:00:00 2001 From: Chunfeng Yun Date: Thu, 29 Nov 2018 10:34:33 +0800 Subject: usb: mtu3: enable hardware remote wakeup from L1 automatically Enable hardware remote wakeup from L1 automatically based on the FIFO status, instead of manual way. Signed-off-by: Chunfeng Yun Signed-off-by: Felipe Balbi --- drivers/usb/mtu3/mtu3_core.c | 10 +++------- 1 file changed, 3 insertions(+), 7 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/mtu3/mtu3_core.c b/drivers/usb/mtu3/mtu3_core.c index 3dce5fd9887d..981e4e8c5c13 100644 --- a/drivers/usb/mtu3/mtu3_core.c +++ b/drivers/usb/mtu3/mtu3_core.c @@ -180,7 +180,7 @@ static void mtu3_intr_enable(struct mtu3 *mtu) mtu3_writel(mbase, U3D_LV1IESR, value); /* Enable U2 common USB interrupts */ - value = SUSPEND_INTR | RESUME_INTR | RESET_INTR | LPM_RESUME_INTR; + value = SUSPEND_INTR | RESUME_INTR | RESET_INTR; mtu3_writel(mbase, U3D_COMMON_USB_INTR_ENABLE, value); if (mtu->is_u3_ip) { @@ -594,6 +594,8 @@ static void mtu3_regs_init(struct mtu3 *mtu) mtu3_writel(mbase, U3D_DEVICE_CONF, 0); /* vbus detected by HW */ mtu3_clrbits(mbase, U3D_MISC_CTRL, VBUS_FRC_EN | VBUS_ON); + /* enable automatical HWRW from L1 */ + mtu3_setbits(mbase, U3D_POWER_MANAGEMENT, LPM_HRWE); } static irqreturn_t mtu3_link_isr(struct mtu3 *mtu) @@ -706,12 +708,6 @@ static irqreturn_t mtu3_u2_common_isr(struct mtu3 *mtu) if (u2comm & RESET_INTR) mtu3_gadget_reset(mtu); - if (u2comm & LPM_RESUME_INTR) { - if (!(mtu3_readl(mbase, U3D_POWER_MANAGEMENT) & LPM_HRWE)) - mtu3_setbits(mbase, U3D_USB20_MISC_CONTROL, - LPM_U3_ACK_EN); - } - return IRQ_HANDLED; } -- cgit From a0678e2eed41e81004308693ac84ea95614b0920 Mon Sep 17 00:00:00 2001 From: Chunfeng Yun Date: Thu, 29 Nov 2018 10:34:34 +0800 Subject: usb: mtu3: fix the issue about SetFeature(U1/U2_Enable) Fix the issue: device doesn't accept LGO_U1/U2: 1. set SW_U1/U2_ACCEPT_ENABLE to eanble controller to accept LGO_U1/U2 by default; 2. enable/disable controller to initiate requests for transition into U1/U2 by SW_U1/U2_REQUEST_ENABLE instead of SW_U1/U2_ACCEPT_ENABLE; Signed-off-by: Chunfeng Yun Signed-off-by: Felipe Balbi --- drivers/usb/mtu3/mtu3_core.c | 4 +++- drivers/usb/mtu3/mtu3_gadget_ep0.c | 8 ++++---- 2 files changed, 7 insertions(+), 5 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/mtu3/mtu3_core.c b/drivers/usb/mtu3/mtu3_core.c index 981e4e8c5c13..1ffc0bc31c1d 100644 --- a/drivers/usb/mtu3/mtu3_core.c +++ b/drivers/usb/mtu3/mtu3_core.c @@ -578,8 +578,10 @@ static void mtu3_regs_init(struct mtu3 *mtu) if (mtu->is_u3_ip) { /* disable LGO_U1/U2 by default */ mtu3_clrbits(mbase, U3D_LINK_POWER_CONTROL, - SW_U1_ACCEPT_ENABLE | SW_U2_ACCEPT_ENABLE | SW_U1_REQUEST_ENABLE | SW_U2_REQUEST_ENABLE); + /* enable accept LGO_U1/U2 link command from host */ + mtu3_setbits(mbase, U3D_LINK_POWER_CONTROL, + SW_U1_ACCEPT_ENABLE | SW_U2_ACCEPT_ENABLE); /* device responses to u3_exit from host automatically */ mtu3_clrbits(mbase, U3D_LTSSM_CTRL, SOFT_U3_EXIT_EN); /* automatically build U2 link when U3 detect fail */ diff --git a/drivers/usb/mtu3/mtu3_gadget_ep0.c b/drivers/usb/mtu3/mtu3_gadget_ep0.c index 25216e79cd6e..3c464d8ae023 100644 --- a/drivers/usb/mtu3/mtu3_gadget_ep0.c +++ b/drivers/usb/mtu3/mtu3_gadget_ep0.c @@ -336,9 +336,9 @@ static int ep0_handle_feature_dev(struct mtu3 *mtu, lpc = mtu3_readl(mbase, U3D_LINK_POWER_CONTROL); if (set) - lpc |= SW_U1_ACCEPT_ENABLE; + lpc |= SW_U1_REQUEST_ENABLE; else - lpc &= ~SW_U1_ACCEPT_ENABLE; + lpc &= ~SW_U1_REQUEST_ENABLE; mtu3_writel(mbase, U3D_LINK_POWER_CONTROL, lpc); mtu->u1_enable = !!set; @@ -351,9 +351,9 @@ static int ep0_handle_feature_dev(struct mtu3 *mtu, lpc = mtu3_readl(mbase, U3D_LINK_POWER_CONTROL); if (set) - lpc |= SW_U2_ACCEPT_ENABLE; + lpc |= SW_U2_REQUEST_ENABLE; else - lpc &= ~SW_U2_ACCEPT_ENABLE; + lpc &= ~SW_U2_REQUEST_ENABLE; mtu3_writel(mbase, U3D_LINK_POWER_CONTROL, lpc); mtu->u2_enable = !!set; -- cgit From 49187dd14cc84f0ff7db2876c43ad510eeec04b0 Mon Sep 17 00:00:00 2001 From: Chunfeng Yun Date: Thu, 29 Nov 2018 10:34:35 +0800 Subject: usb: mtu3: enable SETUPENDISR interrupt If the controller receives a new SETUP during SETUP data stage, and will generate SETUPENDISR interrupt, the driver should abort the current SETUP command and process the new one. Signed-off-by: Chunfeng Yun Signed-off-by: Felipe Balbi --- drivers/usb/mtu3/mtu3_core.c | 2 +- drivers/usb/mtu3/mtu3_gadget_ep0.c | 6 +++++- drivers/usb/mtu3/mtu3_hw_regs.h | 1 + 3 files changed, 7 insertions(+), 2 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/mtu3/mtu3_core.c b/drivers/usb/mtu3/mtu3_core.c index 1ffc0bc31c1d..b6b20949d63a 100644 --- a/drivers/usb/mtu3/mtu3_core.c +++ b/drivers/usb/mtu3/mtu3_core.c @@ -484,7 +484,7 @@ void mtu3_ep0_setup(struct mtu3 *mtu) mtu3_writel(mtu->mac_base, U3D_EP0CSR, csr); /* Enable EP0 interrupt */ - mtu3_writel(mtu->mac_base, U3D_EPIESR, EP0ISR); + mtu3_writel(mtu->mac_base, U3D_EPIESR, EP0ISR | SETUPENDISR); } static int mtu3_mem_alloc(struct mtu3 *mtu) diff --git a/drivers/usb/mtu3/mtu3_gadget_ep0.c b/drivers/usb/mtu3/mtu3_gadget_ep0.c index 3c464d8ae023..7cb7ac980446 100644 --- a/drivers/usb/mtu3/mtu3_gadget_ep0.c +++ b/drivers/usb/mtu3/mtu3_gadget_ep0.c @@ -692,9 +692,13 @@ irqreturn_t mtu3_ep0_isr(struct mtu3 *mtu) mtu3_writel(mbase, U3D_EPISR, int_status); /* W1C */ /* only handle ep0's */ - if (!(int_status & EP0ISR)) + if (!(int_status & (EP0ISR | SETUPENDISR))) return IRQ_NONE; + /* abort current SETUP, and process new one */ + if (int_status & SETUPENDISR) + mtu->ep0_state = MU3D_EP0_STATE_SETUP; + csr = mtu3_readl(mbase, U3D_EP0CSR); dev_dbg(mtu->dev, "%s csr=0x%x\n", __func__, csr); diff --git a/drivers/usb/mtu3/mtu3_hw_regs.h b/drivers/usb/mtu3/mtu3_hw_regs.h index a45bb253939f..d11fcd64c19d 100644 --- a/drivers/usb/mtu3/mtu3_hw_regs.h +++ b/drivers/usb/mtu3/mtu3_hw_regs.h @@ -104,6 +104,7 @@ /* U3D_EPISR */ #define EPRISR(x) (BIT(16) << (x)) +#define SETUPENDISR BIT(16) #define EPTISR(x) (BIT(0) << (x)) #define EP0ISR BIT(0) -- cgit From 47b6f8bf870035d420614844de5e308abe505e8a Mon Sep 17 00:00:00 2001 From: Chunfeng Yun Date: Thu, 29 Nov 2018 10:34:36 +0800 Subject: usb: mtu3: clear SOFTCONN when clear USB3_EN if work as HS mode When the controller supports SS mode, but works as HS mode, the SOFTCONN will not be cleared automatically when clear USB3_EN by default, this cause an issue that can't disconnect from host, so clear SOFTCONN when clear USB3_EN when the class driver want to disable the D+ pullup. Signed-off-by: Chunfeng Yun Signed-off-by: Felipe Balbi --- drivers/usb/mtu3/mtu3_core.c | 2 ++ drivers/usb/mtu3/mtu3_hw_regs.h | 5 +++++ 2 files changed, 7 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/mtu3/mtu3_core.c b/drivers/usb/mtu3/mtu3_core.c index b6b20949d63a..4fee200795a5 100644 --- a/drivers/usb/mtu3/mtu3_core.c +++ b/drivers/usb/mtu3/mtu3_core.c @@ -586,6 +586,8 @@ static void mtu3_regs_init(struct mtu3 *mtu) mtu3_clrbits(mbase, U3D_LTSSM_CTRL, SOFT_U3_EXIT_EN); /* automatically build U2 link when U3 detect fail */ mtu3_setbits(mbase, U3D_USB2_TEST_MODE, U2U3_AUTO_SWITCH); + /* auto clear SOFT_CONN when clear USB3_EN if work as HS */ + mtu3_setbits(mbase, U3D_U3U2_SWITCH_CTRL, SOFTCON_CLR_AUTO_EN); } mtu3_set_speed(mtu); diff --git a/drivers/usb/mtu3/mtu3_hw_regs.h b/drivers/usb/mtu3/mtu3_hw_regs.h index d11fcd64c19d..1d65b7476f23 100644 --- a/drivers/usb/mtu3/mtu3_hw_regs.h +++ b/drivers/usb/mtu3/mtu3_hw_regs.h @@ -268,6 +268,8 @@ #define U3D_LTSSM_INTR_ENABLE (SSUSB_USB3_MAC_CSR_BASE + 0x013C) #define U3D_LTSSM_INTR (SSUSB_USB3_MAC_CSR_BASE + 0x0140) +#define U3D_U3U2_SWITCH_CTRL (SSUSB_USB3_MAC_CSR_BASE + 0x0170) + /*---------------- SSUSB_USB3_MAC_CSR FIELD DEFINITION ----------------*/ /* U3D_LTSSM_CTRL */ @@ -302,6 +304,9 @@ #define SS_DISABLE_INTR BIT(1) #define SS_INACTIVE_INTR BIT(0) +/* U3D_U3U2_SWITCH_CTRL */ +#define SOFTCON_CLR_AUTO_EN BIT(0) + /*---------------- SSUSB_USB3_SYS_CSR REGISTER DEFINITION ----------------*/ #define U3D_LINK_UX_INACT_TIMER (SSUSB_USB3_SYS_CSR_BASE + 0x020C) -- cgit From e86108940e541febf35813402ff29fa6f4a9ac0b Mon Sep 17 00:00:00 2001 From: Mathias Nyman Date: Wed, 28 Nov 2018 15:55:21 +0200 Subject: usb: hub: delay hub autosuspend if USB3 port is still link training When initializing a hub we want to give a USB3 port in link training the same debounce delay time before autosuspening the hub as already trained, connected enabled ports. USB3 ports won't reach the enabled state with "current connect status" and "connect status change" bits set until the USB3 link training finishes. Catching the port in link training (polling) and adding the debounce delay prevents unnecessary failed attempts to autosuspend the hub. Signed-off-by: Mathias Nyman Acked-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/hub.c | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 0f9381b69a3b..009f92800e03 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -1112,6 +1112,16 @@ static void hub_activate(struct usb_hub *hub, enum hub_activation_type type) USB_PORT_FEAT_ENABLE); } + /* + * Add debounce if USB3 link is in polling/link training state. + * Link will automatically transition to Enabled state after + * link training completes. + */ + if (hub_is_superspeed(hdev) && + ((portstatus & USB_PORT_STAT_LINK_STATE) == + USB_SS_PORT_LS_POLLING)) + need_debounce_delay = true; + /* Clear status-change flags; we'll debounce later */ if (portchange & USB_PORT_STAT_C_CONNECTION) { need_debounce_delay = true; -- cgit From 6ed30a7d8ec29d3aba46e47aa8b4a44f077dda4e Mon Sep 17 00:00:00 2001 From: Terin Stock Date: Sun, 9 Sep 2018 21:24:31 -0700 Subject: usb: dwc2: host: use hrtimer for NAK retries Modify the wait delay utilize the high resolution timer API to allow for more precisely scheduled callbacks. A previous commit added a 1ms retry delay after multiple consecutive NAKed transactions using jiffies. On systems with a low timer interrupt frequency, this delay may be significantly longer than specified, resulting in misbehavior with some USB devices. This scenario was reached on a Raspberry Pi 3B with a Macally FDD-USB floppy drive (identified as 0424:0fdc Standard Microsystems Corp. Floppy, based on the USB97CFDC USB FDC). With the relay delay, the drive would be unable to mount a disk, replying with NAKs until the device was reset. Using ktime, the delta between starting the timer (in dwc2_hcd_qh_add) and the callback function can be determined. With the original delay implementation, this value was consistently approximately 12ms. (output in us). -0 [000] ..s. 1600.559974: dwc2_wait_timer_fn: wait_timer delta: 11976 -0 [000] ..s. 1600.571974: dwc2_wait_timer_fn: wait_timer delta: 11977 -0 [000] ..s. 1600.583974: dwc2_wait_timer_fn: wait_timer delta: 11976 -0 [000] ..s. 1600.595974: dwc2_wait_timer_fn: wait_timer delta: 11977 After converting the relay delay to using a higher resolution timer, the delay was much closer to 1ms. -0 [000] d.h. 1956.553017: dwc2_wait_timer_fn: wait_timer delta: 1002 -0 [000] d.h. 1956.554114: dwc2_wait_timer_fn: wait_timer delta: 1002 -0 [000] d.h. 1957.542660: dwc2_wait_timer_fn: wait_timer delta: 1004 -0 [000] d.h. 1957.543701: dwc2_wait_timer_fn: wait_timer delta: 1002 The floppy drive operates properly with delays up to approximately 5ms, and sends NAKs for any delays that are longer. Fixes: 38d2b5fb75c1 ("usb: dwc2: host: Don't retry NAKed transactions right away") Cc: Reviewed-by: Douglas Anderson Acked-by: Minas Harutyunyan Signed-off-by: Terin Stock Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/hcd.h | 2 +- drivers/usb/dwc2/hcd_queue.c | 19 ++++++++++++------- 2 files changed, 13 insertions(+), 8 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc2/hcd.h b/drivers/usb/dwc2/hcd.h index 3f9bccc95add..c089ffa1f0a8 100644 --- a/drivers/usb/dwc2/hcd.h +++ b/drivers/usb/dwc2/hcd.h @@ -366,7 +366,7 @@ struct dwc2_qh { u32 desc_list_sz; u32 *n_bytes; struct timer_list unreserve_timer; - struct timer_list wait_timer; + struct hrtimer wait_timer; struct dwc2_tt *dwc_tt; int ttport; unsigned tt_buffer_dirty:1; diff --git a/drivers/usb/dwc2/hcd_queue.c b/drivers/usb/dwc2/hcd_queue.c index 40839591d2ec..ea3aa640c15c 100644 --- a/drivers/usb/dwc2/hcd_queue.c +++ b/drivers/usb/dwc2/hcd_queue.c @@ -59,7 +59,7 @@ #define DWC2_UNRESERVE_DELAY (msecs_to_jiffies(5)) /* If we get a NAK, wait this long before retrying */ -#define DWC2_RETRY_WAIT_DELAY (msecs_to_jiffies(1)) +#define DWC2_RETRY_WAIT_DELAY 1*1E6L /** * dwc2_periodic_channel_available() - Checks that a channel is available for a @@ -1464,10 +1464,12 @@ static void dwc2_deschedule_periodic(struct dwc2_hsotg *hsotg, * qh back to the "inactive" list, then queues transactions. * * @t: Pointer to wait_timer in a qh. + * + * Return: HRTIMER_NORESTART to not automatically restart this timer. */ -static void dwc2_wait_timer_fn(struct timer_list *t) +static enum hrtimer_restart dwc2_wait_timer_fn(struct hrtimer *t) { - struct dwc2_qh *qh = from_timer(qh, t, wait_timer); + struct dwc2_qh *qh = container_of(t, struct dwc2_qh, wait_timer); struct dwc2_hsotg *hsotg = qh->hsotg; unsigned long flags; @@ -1491,6 +1493,7 @@ static void dwc2_wait_timer_fn(struct timer_list *t) } spin_unlock_irqrestore(&hsotg->lock, flags); + return HRTIMER_NORESTART; } /** @@ -1521,7 +1524,8 @@ static void dwc2_qh_init(struct dwc2_hsotg *hsotg, struct dwc2_qh *qh, /* Initialize QH */ qh->hsotg = hsotg; timer_setup(&qh->unreserve_timer, dwc2_unreserve_timer_fn, 0); - timer_setup(&qh->wait_timer, dwc2_wait_timer_fn, 0); + hrtimer_init(&qh->wait_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); + qh->wait_timer.function = &dwc2_wait_timer_fn; qh->ep_type = ep_type; qh->ep_is_in = ep_is_in; @@ -1690,7 +1694,7 @@ void dwc2_hcd_qh_free(struct dwc2_hsotg *hsotg, struct dwc2_qh *qh) * won't do anything anyway, but we want it to finish before we free * memory. */ - del_timer_sync(&qh->wait_timer); + hrtimer_cancel(&qh->wait_timer); dwc2_host_put_tt_info(hsotg, qh->dwc_tt); @@ -1716,6 +1720,7 @@ int dwc2_hcd_qh_add(struct dwc2_hsotg *hsotg, struct dwc2_qh *qh) { int status; u32 intr_mask; + ktime_t delay; if (dbg_qh(qh)) dev_vdbg(hsotg->dev, "%s()\n", __func__); @@ -1734,8 +1739,8 @@ int dwc2_hcd_qh_add(struct dwc2_hsotg *hsotg, struct dwc2_qh *qh) list_add_tail(&qh->qh_list_entry, &hsotg->non_periodic_sched_waiting); qh->wait_timer_cancel = false; - mod_timer(&qh->wait_timer, - jiffies + DWC2_RETRY_WAIT_DELAY + 1); + delay = ktime_set(0, DWC2_RETRY_WAIT_DELAY); + hrtimer_start(&qh->wait_timer, delay, HRTIMER_MODE_REL); } else { list_add_tail(&qh->qh_list_entry, &hsotg->non_periodic_sched_inactive); -- cgit From 1e3af5dfd05c53b3dfd367af4c78ebbf60f6fb41 Mon Sep 17 00:00:00 2001 From: "Hsin-Yi, Wang" Date: Thu, 29 Nov 2018 11:16:27 +0800 Subject: usb/mtu3: power down device ip at setup Originally, when dr_mode is USB_DR_MODE_HOST, it didn't power down device ip, so host ip sleep will fail at ssusb_host_disable. Power down device ip at ssusb_host_setup. Signed-off-by: Hsin-Yi, Wang Acked-by: Chunfeng Yun Signed-off-by: Greg Kroah-Hartman --- drivers/usb/mtu3/mtu3_plat.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/mtu3/mtu3_plat.c b/drivers/usb/mtu3/mtu3_plat.c index 46551f6d16fd..e086630e41a9 100644 --- a/drivers/usb/mtu3/mtu3_plat.c +++ b/drivers/usb/mtu3/mtu3_plat.c @@ -200,6 +200,14 @@ static void ssusb_ip_sw_reset(struct ssusb_mtk *ssusb) mtu3_setbits(ssusb->ippc_base, U3D_SSUSB_IP_PW_CTRL0, SSUSB_IP_SW_RST); udelay(1); mtu3_clrbits(ssusb->ippc_base, U3D_SSUSB_IP_PW_CTRL0, SSUSB_IP_SW_RST); + + /* + * device ip may be powered on in firmware/BROM stage before entering + * kernel stage; + * power down device ip, otherwise ip-sleep will fail when working as + * host only mode + */ + mtu3_setbits(ssusb->ippc_base, U3D_SSUSB_IP_PW_CTRL2, SSUSB_IP_DEV_PDN); } /* ignore the error if the clock does not exist */ -- cgit From b01828e26048f43dc4cea5759f200ec9e8332039 Mon Sep 17 00:00:00 2001 From: Jarkko Nikula Date: Wed, 21 Nov 2018 06:31:23 +0000 Subject: usb: renesas_usbhs: Remove dummy runtime PM callbacks Platform drivers don't need dummy runtime PM callbacks that just return success in order to have runtime PM happening. This has changed since following commits: commit 05aa55dddb9e ("PM / Runtime: Lenient generic runtime pm callbacks") commit 543f2503a956 ("PM / platform_bus: Allow runtime PM by default") commit 8b313a38ecff ("PM / Platform: Use generic runtime PM callbacks directly") Signed-off-by: Jarkko Nikula Reviewed-by: Yoshihiro Shimoda Acked-by: Wolfram Sang [shimoda: revise git commit description style] Signed-off-by: Yoshihiro Shimoda Signed-off-by: Felipe Balbi --- drivers/usb/renesas_usbhs/common.c | 14 -------------- 1 file changed, 14 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/renesas_usbhs/common.c b/drivers/usb/renesas_usbhs/common.c index a3e1290d682d..0e760f228dd8 100644 --- a/drivers/usb/renesas_usbhs/common.c +++ b/drivers/usb/renesas_usbhs/common.c @@ -874,23 +874,9 @@ static int usbhsc_resume(struct device *dev) return 0; } -static int usbhsc_runtime_nop(struct device *dev) -{ - /* Runtime PM callback shared between ->runtime_suspend() - * and ->runtime_resume(). Simply returns success. - * - * This driver re-initializes all registers after - * pm_runtime_get_sync() anyway so there is no need - * to save and restore registers here. - */ - return 0; -} - static const struct dev_pm_ops usbhsc_pm_ops = { .suspend = usbhsc_suspend, .resume = usbhsc_resume, - .runtime_suspend = usbhsc_runtime_nop, - .runtime_resume = usbhsc_runtime_nop, }; static struct platform_driver renesas_usbhs_driver = { -- cgit From d54d334e75b93f3a372d1cbb7e805380b3281482 Mon Sep 17 00:00:00 2001 From: Yoshihiro Shimoda Date: Wed, 21 Nov 2018 06:31:23 +0000 Subject: usb: renesas_usbhs: Use SIMPLE_DEV_PM_OPS macro This patch uses SIMPLE_DEV_PM_OPS macro instead of struct dev_pm_ops directly. Signed-off-by: Yoshihiro Shimoda Signed-off-by: Felipe Balbi --- drivers/usb/renesas_usbhs/common.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/renesas_usbhs/common.c b/drivers/usb/renesas_usbhs/common.c index 0e760f228dd8..02c1d2bf4f86 100644 --- a/drivers/usb/renesas_usbhs/common.c +++ b/drivers/usb/renesas_usbhs/common.c @@ -874,10 +874,7 @@ static int usbhsc_resume(struct device *dev) return 0; } -static const struct dev_pm_ops usbhsc_pm_ops = { - .suspend = usbhsc_suspend, - .resume = usbhsc_resume, -}; +static SIMPLE_DEV_PM_OPS(usbhsc_pm_ops, usbhsc_suspend, usbhsc_resume); static struct platform_driver renesas_usbhs_driver = { .driver = { -- cgit From aef34b48d084c42d765c912583c51811e853fbce Mon Sep 17 00:00:00 2001 From: Chunfeng Yun Date: Thu, 29 Nov 2018 10:34:32 +0800 Subject: usb: mtu3: remove QMU checksum The QMU checksum calculation is redundant, mostly used by debug, so remove it here. Signed-off-by: Chunfeng Yun Signed-off-by: Greg Kroah-Hartman --- drivers/usb/mtu3/mtu3_core.c | 2 -- drivers/usb/mtu3/mtu3_qmu.c | 26 -------------------------- 2 files changed, 28 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/mtu3/mtu3_core.c b/drivers/usb/mtu3/mtu3_core.c index ae70b9bfd797..3dce5fd9887d 100644 --- a/drivers/usb/mtu3/mtu3_core.c +++ b/drivers/usb/mtu3/mtu3_core.c @@ -592,8 +592,6 @@ static void mtu3_regs_init(struct mtu3 *mtu) mtu3_clrbits(mbase, U3D_LINK_RESET_INFO, WTCHRP_MSK); /* U2/U3 detected by HW */ mtu3_writel(mbase, U3D_DEVICE_CONF, 0); - /* enable QMU 16B checksum */ - mtu3_setbits(mbase, U3D_QCR0, QMU_CS16B_EN); /* vbus detected by HW */ mtu3_clrbits(mbase, U3D_MISC_CTRL, VBUS_FRC_EN | VBUS_ON); } diff --git a/drivers/usb/mtu3/mtu3_qmu.c b/drivers/usb/mtu3/mtu3_qmu.c index ff62ba232177..73ac042c45a8 100644 --- a/drivers/usb/mtu3/mtu3_qmu.c +++ b/drivers/usb/mtu3/mtu3_qmu.c @@ -154,27 +154,6 @@ void mtu3_gpd_ring_free(struct mtu3_ep *mep) memset(ring, 0, sizeof(*ring)); } -/* - * calculate check sum of a gpd or bd - * add "noinline" and "mb" to prevent wrong calculation - */ -static noinline u8 qmu_calc_checksum(u8 *data) -{ - u8 chksum = 0; - int i; - - data[1] = 0x0; /* set checksum to 0 */ - - mb(); /* ensure the gpd/bd is really up-to-date */ - for (i = 0; i < QMU_CHECKSUM_LEN; i++) - chksum += data[i]; - - /* Default: HWO=1, @flag[bit0] */ - chksum += 1; - - return 0xFF - chksum; -} - void mtu3_qmu_resume(struct mtu3_ep *mep) { struct mtu3 *mtu = mep->mtu; @@ -260,7 +239,6 @@ static int mtu3_prepare_tx_gpd(struct mtu3_ep *mep, struct mtu3_request *mreq) if (req->zero) gpd->ext_flag |= GPD_EXT_FLAG_ZLP; - gpd->chksum = qmu_calc_checksum((u8 *)gpd); gpd->flag |= GPD_FLAGS_HWO; mreq->gpd = gpd; @@ -295,7 +273,6 @@ static int mtu3_prepare_rx_gpd(struct mtu3_ep *mep, struct mtu3_request *mreq) gpd->next_gpd = cpu_to_le32(lower_32_bits(enq_dma)); ext_addr |= GPD_EXT_NGP(upper_32_bits(enq_dma)); gpd->rx_ext_addr = cpu_to_le16(ext_addr); - gpd->chksum = qmu_calc_checksum((u8 *)gpd); gpd->flag |= GPD_FLAGS_HWO; mreq->gpd = gpd; @@ -323,7 +300,6 @@ int mtu3_qmu_start(struct mtu3_ep *mep) /* set QMU start address */ write_txq_start_addr(mbase, epnum, ring->dma); mtu3_setbits(mbase, MU3D_EP_TXCR0(epnum), TX_DMAREQEN); - mtu3_setbits(mbase, U3D_QCR0, QMU_TX_CS_EN(epnum)); /* send zero length packet according to ZLP flag in GPD */ mtu3_setbits(mbase, U3D_QCR1, QMU_TX_ZLP(epnum)); mtu3_writel(mbase, U3D_TQERRIESR0, @@ -338,7 +314,6 @@ int mtu3_qmu_start(struct mtu3_ep *mep) } else { write_rxq_start_addr(mbase, epnum, ring->dma); mtu3_setbits(mbase, MU3D_EP_RXCR0(epnum), RX_DMAREQEN); - mtu3_setbits(mbase, U3D_QCR0, QMU_RX_CS_EN(epnum)); /* don't expect ZLP */ mtu3_clrbits(mbase, U3D_QCR3, QMU_RX_ZLP(epnum)); /* move to next GPD when receive ZLP */ @@ -441,7 +416,6 @@ static void qmu_tx_zlp_error_handler(struct mtu3 *mtu, u8 epnum) /* by pass the current GDP */ gpd_current->flag |= GPD_FLAGS_BPS; - gpd_current->chksum = qmu_calc_checksum((u8 *)gpd_current); gpd_current->flag |= GPD_FLAGS_HWO; /*enable DMAREQEN, switch back to QMU mode */ -- cgit From 29ae096ef93a9df78a4b86e49ef916afa8e7c34b Mon Sep 17 00:00:00 2001 From: Chunfeng Yun Date: Thu, 29 Nov 2018 10:34:33 +0800 Subject: usb: mtu3: enable hardware remote wakeup from L1 automatically Enable hardware remote wakeup from L1 automatically based on the FIFO status, instead of manual way. Signed-off-by: Chunfeng Yun Signed-off-by: Greg Kroah-Hartman --- drivers/usb/mtu3/mtu3_core.c | 10 +++------- 1 file changed, 3 insertions(+), 7 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/mtu3/mtu3_core.c b/drivers/usb/mtu3/mtu3_core.c index 3dce5fd9887d..981e4e8c5c13 100644 --- a/drivers/usb/mtu3/mtu3_core.c +++ b/drivers/usb/mtu3/mtu3_core.c @@ -180,7 +180,7 @@ static void mtu3_intr_enable(struct mtu3 *mtu) mtu3_writel(mbase, U3D_LV1IESR, value); /* Enable U2 common USB interrupts */ - value = SUSPEND_INTR | RESUME_INTR | RESET_INTR | LPM_RESUME_INTR; + value = SUSPEND_INTR | RESUME_INTR | RESET_INTR; mtu3_writel(mbase, U3D_COMMON_USB_INTR_ENABLE, value); if (mtu->is_u3_ip) { @@ -594,6 +594,8 @@ static void mtu3_regs_init(struct mtu3 *mtu) mtu3_writel(mbase, U3D_DEVICE_CONF, 0); /* vbus detected by HW */ mtu3_clrbits(mbase, U3D_MISC_CTRL, VBUS_FRC_EN | VBUS_ON); + /* enable automatical HWRW from L1 */ + mtu3_setbits(mbase, U3D_POWER_MANAGEMENT, LPM_HRWE); } static irqreturn_t mtu3_link_isr(struct mtu3 *mtu) @@ -706,12 +708,6 @@ static irqreturn_t mtu3_u2_common_isr(struct mtu3 *mtu) if (u2comm & RESET_INTR) mtu3_gadget_reset(mtu); - if (u2comm & LPM_RESUME_INTR) { - if (!(mtu3_readl(mbase, U3D_POWER_MANAGEMENT) & LPM_HRWE)) - mtu3_setbits(mbase, U3D_USB20_MISC_CONTROL, - LPM_U3_ACK_EN); - } - return IRQ_HANDLED; } -- cgit From e802972433f7cee173ec3ffe470d51b39029de9b Mon Sep 17 00:00:00 2001 From: Chunfeng Yun Date: Thu, 29 Nov 2018 10:34:34 +0800 Subject: usb: mtu3: fix the issue about SetFeature(U1/U2_Enable) Fix the issue: device doesn't accept LGO_U1/U2: 1. set SW_U1/U2_ACCEPT_ENABLE to eanble controller to accept LGO_U1/U2 by default; 2. enable/disable controller to initiate requests for transition into U1/U2 by SW_U1/U2_REQUEST_ENABLE instead of SW_U1/U2_ACCEPT_ENABLE; Signed-off-by: Chunfeng Yun Signed-off-by: Greg Kroah-Hartman --- drivers/usb/mtu3/mtu3_core.c | 4 +++- drivers/usb/mtu3/mtu3_gadget_ep0.c | 8 ++++---- 2 files changed, 7 insertions(+), 5 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/mtu3/mtu3_core.c b/drivers/usb/mtu3/mtu3_core.c index 981e4e8c5c13..1ffc0bc31c1d 100644 --- a/drivers/usb/mtu3/mtu3_core.c +++ b/drivers/usb/mtu3/mtu3_core.c @@ -578,8 +578,10 @@ static void mtu3_regs_init(struct mtu3 *mtu) if (mtu->is_u3_ip) { /* disable LGO_U1/U2 by default */ mtu3_clrbits(mbase, U3D_LINK_POWER_CONTROL, - SW_U1_ACCEPT_ENABLE | SW_U2_ACCEPT_ENABLE | SW_U1_REQUEST_ENABLE | SW_U2_REQUEST_ENABLE); + /* enable accept LGO_U1/U2 link command from host */ + mtu3_setbits(mbase, U3D_LINK_POWER_CONTROL, + SW_U1_ACCEPT_ENABLE | SW_U2_ACCEPT_ENABLE); /* device responses to u3_exit from host automatically */ mtu3_clrbits(mbase, U3D_LTSSM_CTRL, SOFT_U3_EXIT_EN); /* automatically build U2 link when U3 detect fail */ diff --git a/drivers/usb/mtu3/mtu3_gadget_ep0.c b/drivers/usb/mtu3/mtu3_gadget_ep0.c index 25216e79cd6e..3c464d8ae023 100644 --- a/drivers/usb/mtu3/mtu3_gadget_ep0.c +++ b/drivers/usb/mtu3/mtu3_gadget_ep0.c @@ -336,9 +336,9 @@ static int ep0_handle_feature_dev(struct mtu3 *mtu, lpc = mtu3_readl(mbase, U3D_LINK_POWER_CONTROL); if (set) - lpc |= SW_U1_ACCEPT_ENABLE; + lpc |= SW_U1_REQUEST_ENABLE; else - lpc &= ~SW_U1_ACCEPT_ENABLE; + lpc &= ~SW_U1_REQUEST_ENABLE; mtu3_writel(mbase, U3D_LINK_POWER_CONTROL, lpc); mtu->u1_enable = !!set; @@ -351,9 +351,9 @@ static int ep0_handle_feature_dev(struct mtu3 *mtu, lpc = mtu3_readl(mbase, U3D_LINK_POWER_CONTROL); if (set) - lpc |= SW_U2_ACCEPT_ENABLE; + lpc |= SW_U2_REQUEST_ENABLE; else - lpc &= ~SW_U2_ACCEPT_ENABLE; + lpc &= ~SW_U2_REQUEST_ENABLE; mtu3_writel(mbase, U3D_LINK_POWER_CONTROL, lpc); mtu->u2_enable = !!set; -- cgit From 94552090cd188751afdc58a311aa2f3456f5fac0 Mon Sep 17 00:00:00 2001 From: Chunfeng Yun Date: Thu, 29 Nov 2018 10:34:35 +0800 Subject: usb: mtu3: enable SETUPENDISR interrupt If the controller receives a new SETUP during SETUP data stage, and will generate SETUPENDISR interrupt, the driver should abort the current SETUP command and process the new one. Signed-off-by: Chunfeng Yun Signed-off-by: Greg Kroah-Hartman --- drivers/usb/mtu3/mtu3_core.c | 2 +- drivers/usb/mtu3/mtu3_gadget_ep0.c | 6 +++++- drivers/usb/mtu3/mtu3_hw_regs.h | 1 + 3 files changed, 7 insertions(+), 2 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/mtu3/mtu3_core.c b/drivers/usb/mtu3/mtu3_core.c index 1ffc0bc31c1d..b6b20949d63a 100644 --- a/drivers/usb/mtu3/mtu3_core.c +++ b/drivers/usb/mtu3/mtu3_core.c @@ -484,7 +484,7 @@ void mtu3_ep0_setup(struct mtu3 *mtu) mtu3_writel(mtu->mac_base, U3D_EP0CSR, csr); /* Enable EP0 interrupt */ - mtu3_writel(mtu->mac_base, U3D_EPIESR, EP0ISR); + mtu3_writel(mtu->mac_base, U3D_EPIESR, EP0ISR | SETUPENDISR); } static int mtu3_mem_alloc(struct mtu3 *mtu) diff --git a/drivers/usb/mtu3/mtu3_gadget_ep0.c b/drivers/usb/mtu3/mtu3_gadget_ep0.c index 3c464d8ae023..7cb7ac980446 100644 --- a/drivers/usb/mtu3/mtu3_gadget_ep0.c +++ b/drivers/usb/mtu3/mtu3_gadget_ep0.c @@ -692,9 +692,13 @@ irqreturn_t mtu3_ep0_isr(struct mtu3 *mtu) mtu3_writel(mbase, U3D_EPISR, int_status); /* W1C */ /* only handle ep0's */ - if (!(int_status & EP0ISR)) + if (!(int_status & (EP0ISR | SETUPENDISR))) return IRQ_NONE; + /* abort current SETUP, and process new one */ + if (int_status & SETUPENDISR) + mtu->ep0_state = MU3D_EP0_STATE_SETUP; + csr = mtu3_readl(mbase, U3D_EP0CSR); dev_dbg(mtu->dev, "%s csr=0x%x\n", __func__, csr); diff --git a/drivers/usb/mtu3/mtu3_hw_regs.h b/drivers/usb/mtu3/mtu3_hw_regs.h index a45bb253939f..d11fcd64c19d 100644 --- a/drivers/usb/mtu3/mtu3_hw_regs.h +++ b/drivers/usb/mtu3/mtu3_hw_regs.h @@ -104,6 +104,7 @@ /* U3D_EPISR */ #define EPRISR(x) (BIT(16) << (x)) +#define SETUPENDISR BIT(16) #define EPTISR(x) (BIT(0) << (x)) #define EP0ISR BIT(0) -- cgit From 1fab219e65c45cf6e294c757b10e514a15f55f8d Mon Sep 17 00:00:00 2001 From: Chunfeng Yun Date: Thu, 29 Nov 2018 10:34:36 +0800 Subject: usb: mtu3: clear SOFTCONN when clear USB3_EN if work as HS mode When the controller supports SS mode, but works as HS mode, the SOFTCONN will not be cleared automatically when clear USB3_EN by default, this cause an issue that can't disconnect from host, so clear SOFTCONN when clear USB3_EN when the class driver want to disable the D+ pullup. Signed-off-by: Chunfeng Yun Signed-off-by: Greg Kroah-Hartman --- drivers/usb/mtu3/mtu3_core.c | 2 ++ drivers/usb/mtu3/mtu3_hw_regs.h | 5 +++++ 2 files changed, 7 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/mtu3/mtu3_core.c b/drivers/usb/mtu3/mtu3_core.c index b6b20949d63a..4fee200795a5 100644 --- a/drivers/usb/mtu3/mtu3_core.c +++ b/drivers/usb/mtu3/mtu3_core.c @@ -586,6 +586,8 @@ static void mtu3_regs_init(struct mtu3 *mtu) mtu3_clrbits(mbase, U3D_LTSSM_CTRL, SOFT_U3_EXIT_EN); /* automatically build U2 link when U3 detect fail */ mtu3_setbits(mbase, U3D_USB2_TEST_MODE, U2U3_AUTO_SWITCH); + /* auto clear SOFT_CONN when clear USB3_EN if work as HS */ + mtu3_setbits(mbase, U3D_U3U2_SWITCH_CTRL, SOFTCON_CLR_AUTO_EN); } mtu3_set_speed(mtu); diff --git a/drivers/usb/mtu3/mtu3_hw_regs.h b/drivers/usb/mtu3/mtu3_hw_regs.h index d11fcd64c19d..1d65b7476f23 100644 --- a/drivers/usb/mtu3/mtu3_hw_regs.h +++ b/drivers/usb/mtu3/mtu3_hw_regs.h @@ -268,6 +268,8 @@ #define U3D_LTSSM_INTR_ENABLE (SSUSB_USB3_MAC_CSR_BASE + 0x013C) #define U3D_LTSSM_INTR (SSUSB_USB3_MAC_CSR_BASE + 0x0140) +#define U3D_U3U2_SWITCH_CTRL (SSUSB_USB3_MAC_CSR_BASE + 0x0170) + /*---------------- SSUSB_USB3_MAC_CSR FIELD DEFINITION ----------------*/ /* U3D_LTSSM_CTRL */ @@ -302,6 +304,9 @@ #define SS_DISABLE_INTR BIT(1) #define SS_INACTIVE_INTR BIT(0) +/* U3D_U3U2_SWITCH_CTRL */ +#define SOFTCON_CLR_AUTO_EN BIT(0) + /*---------------- SSUSB_USB3_SYS_CSR REGISTER DEFINITION ----------------*/ #define U3D_LINK_UX_INACT_TIMER (SSUSB_USB3_SYS_CSR_BASE + 0x020C) -- cgit From 6abfa0f5bb7cce98c89e2c28fcea31c17200890e Mon Sep 17 00:00:00 2001 From: Thinh Nguyen Date: Thu, 15 Nov 2018 19:03:27 -0800 Subject: usb: dwc3: gadget: Report isoc transfer frame number Implement the new frame_number API to report the isochronous interval frame number. This patch checks and reports the interval in which the isoc transfer was transmitted or received via the Isoc-First TRB SOF number field. Signed-off-by: Thinh Nguyen Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/core.h | 1 + drivers/usb/dwc3/gadget.c | 13 +++++++++++++ 2 files changed, 14 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index 15c07b2b5866..df876418cb78 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -784,6 +784,7 @@ enum dwc3_link_state { #define DWC3_TRB_CTRL_ISP_IMI BIT(10) #define DWC3_TRB_CTRL_IOC BIT(11) #define DWC3_TRB_CTRL_SID_SOFN(n) (((n) & 0xffff) << 14) +#define DWC3_TRB_CTRL_GET_SID_SOFN(n) (((n) & (0xffff << 14)) >> 14) #define DWC3_TRBCTL_TYPE(n) ((n) & (0x3f << 4)) #define DWC3_TRBCTL_NORMAL DWC3_TRB_CTRL_TRBCTL(1) diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 38d6df98e9ce..e2caf9eec30a 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -2339,6 +2339,19 @@ static int dwc3_gadget_ep_reclaim_completed_trb(struct dwc3_ep *dep, if (chain && (trb->ctrl & DWC3_TRB_CTRL_HWO)) trb->ctrl &= ~DWC3_TRB_CTRL_HWO; + /* + * For isochronous transfers, the first TRB in a service interval must + * have the Isoc-First type. Track and report its interval frame number. + */ + if (usb_endpoint_xfer_isoc(dep->endpoint.desc) && + (trb->ctrl & DWC3_TRBCTL_ISOCHRONOUS_FIRST)) { + unsigned int frame_number; + + frame_number = DWC3_TRB_CTRL_GET_SID_SOFN(trb->ctrl); + frame_number &= ~(dep->interval - 1); + req->request.frame_number = frame_number; + } + /* * If we're dealing with unaligned size OUT transfer, we will be left * with one TRB pending in the ring. We need to manually clear HWO bit -- cgit From 440da5a30e54deda4ded2a1dc61baf3ee3891f5d Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Thu, 15 Nov 2018 15:16:19 +0200 Subject: staging: typec: fusb302: Rename fcs,extcon-name to linux,extcon-name Since we are going to use the same in Designware USB 3 driver, rename the property to be consistent across the drivers. No functional change intended. Signed-off-by: Andy Shevchenko Cc: Hans de Goede Cc: Guenter Roeck Acked-by: Hans de Goede Acked-by: Guenter Roeck Reviewed-by: Heikki Krogerus Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/tcpm/fusb302.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/typec/tcpm/fusb302.c b/drivers/usb/typec/tcpm/fusb302.c index 43b64d9309d0..e9344997329c 100644 --- a/drivers/usb/typec/tcpm/fusb302.c +++ b/drivers/usb/typec/tcpm/fusb302.c @@ -1765,7 +1765,7 @@ static int fusb302_probe(struct i2c_client *client, * to be set by the platform code which also registers the i2c client * for the fusb302. */ - if (device_property_read_string(dev, "fcs,extcon-name", &name) == 0) { + if (device_property_read_string(dev, "linux,extcon-name", &name) == 0) { chip->extcon = extcon_get_extcon_dev(name); if (!chip->extcon) return -EPROBE_DEFER; -- cgit From 67f3a0d0ad7220b9c37b5e6722a821cd7f389b39 Mon Sep 17 00:00:00 2001 From: Alexander Theissen Date: Tue, 4 Dec 2018 23:43:36 +0100 Subject: usb: appledisplay: Set urb transfer_flags to URB_NO_TRANSFER_DMA_MAP The driver does allocate a DMA address with usb_alloc_coherent but did not set the appropriate flag to signal that transfer_dma is set to a valid value. Signed-off-by: Alexander Theissen Signed-off-by: Greg Kroah-Hartman --- drivers/usb/misc/appledisplay.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/usb') diff --git a/drivers/usb/misc/appledisplay.c b/drivers/usb/misc/appledisplay.c index 85b48c6ddc7e..730a266cd7b9 100644 --- a/drivers/usb/misc/appledisplay.c +++ b/drivers/usb/misc/appledisplay.c @@ -260,6 +260,7 @@ static int appledisplay_probe(struct usb_interface *iface, usb_rcvintpipe(udev, int_in_endpointAddr), pdata->urbdata, ACD_URB_BUFFER_LEN, appledisplay_complete, pdata, 1); + pdata->urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP; if (usb_submit_urb(pdata->urb, GFP_KERNEL)) { retval = -EIO; dev_err(&iface->dev, "Submitting URB failed\n"); -- cgit From 3ea5eb139f43360ae2d471e975b82d3fa38929c8 Mon Sep 17 00:00:00 2001 From: Alexander Theissen Date: Tue, 4 Dec 2018 23:43:37 +0100 Subject: usb: appledisplay: Remove unnecessary spinlock The spinlock was inside the urb completion function which is only called once per display and is then resubmitted from this function. There was no other place where this lock was used. Signed-off-by: Alexander Theissen Signed-off-by: Greg Kroah-Hartman --- drivers/usb/misc/appledisplay.c | 7 ------- 1 file changed, 7 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/misc/appledisplay.c b/drivers/usb/misc/appledisplay.c index 730a266cd7b9..8859cd968be9 100644 --- a/drivers/usb/misc/appledisplay.c +++ b/drivers/usb/misc/appledisplay.c @@ -68,7 +68,6 @@ struct appledisplay { struct delayed_work work; int button_pressed; - spinlock_t lock; struct mutex sysfslock; /* concurrent read and write */ }; @@ -78,7 +77,6 @@ static void appledisplay_complete(struct urb *urb) { struct appledisplay *pdata = urb->context; struct device *dev = &pdata->udev->dev; - unsigned long flags; int status = urb->status; int retval; @@ -104,8 +102,6 @@ static void appledisplay_complete(struct urb *urb) goto exit; } - spin_lock_irqsave(&pdata->lock, flags); - switch(pdata->urbdata[1]) { case ACD_BTN_BRIGHT_UP: case ACD_BTN_BRIGHT_DOWN: @@ -118,8 +114,6 @@ static void appledisplay_complete(struct urb *urb) break; } - spin_unlock_irqrestore(&pdata->lock, flags); - exit: retval = usb_submit_urb(pdata->urb, GFP_ATOMIC); if (retval) { @@ -228,7 +222,6 @@ static int appledisplay_probe(struct usb_interface *iface, pdata->udev = udev; - spin_lock_init(&pdata->lock); INIT_DELAYED_WORK(&pdata->work, appledisplay_work); mutex_init(&pdata->sysfslock); -- cgit From 54d48183d21e03f780053d7129312049cb5dd591 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Mon, 3 Dec 2018 11:28:47 +0200 Subject: usb: dwc3: trace: add missing break statement to make compiler happy MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The missed break statement in the outer switch makes the code fall through always and thus always same value will be printed. Besides that, compiler warns about missed fall through marker: drivers/usb/dwc3/./trace.h: In function ‘trace_raw_output_dwc3_log_trb’: drivers/usb/dwc3/./trace.h:246:4: warning: this statement may fall through [-Wimplicit-fallthrough=] switch (pcm) { ^~~~~~ Add the missing break statement to work correctly without compilation warnings. Fixes: fa8d965d736b ("usb: dwc3: trace: pretty print high-bandwidth transfers too") Cc: Felipe Balbi Signed-off-by: Andy Shevchenko Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/trace.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/trace.h b/drivers/usb/dwc3/trace.h index 50fb6f2d92dd..e97a00593dda 100644 --- a/drivers/usb/dwc3/trace.h +++ b/drivers/usb/dwc3/trace.h @@ -251,9 +251,11 @@ DECLARE_EVENT_CLASS(dwc3_log_trb, s = "2x "; break; case 3: + default: s = "3x "; break; } + break; default: s = ""; } s; }), -- cgit From f770e3bc236ee954a3b4052bdf55739e26ee25db Mon Sep 17 00:00:00 2001 From: YueHaibing Date: Fri, 7 Dec 2018 03:52:43 +0000 Subject: usb: mtu3: fix dbginfo in qmu_tx_zlp_error_handler Fixes gcc '-Wunused-but-set-variable' warning: drivers/usb/mtu3/mtu3_qmu.c: In function 'qmu_tx_zlp_error_handler': drivers/usb/mtu3/mtu3_qmu.c:385:22: warning: variable 'req' set but not used [-Wunused-but-set-variable] It seems dbginfo original intention is print 'req' other than 'mreq' Acked-by: Chunfeng Yun Signed-off-by: YueHaibing Signed-off-by: Felipe Balbi --- drivers/usb/mtu3/mtu3_qmu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/mtu3/mtu3_qmu.c b/drivers/usb/mtu3/mtu3_qmu.c index 73ac042c45a8..09f19f70fe8f 100644 --- a/drivers/usb/mtu3/mtu3_qmu.c +++ b/drivers/usb/mtu3/mtu3_qmu.c @@ -402,7 +402,7 @@ static void qmu_tx_zlp_error_handler(struct mtu3 *mtu, u8 epnum) return; } - dev_dbg(mtu->dev, "%s send ZLP for req=%p\n", __func__, mreq); + dev_dbg(mtu->dev, "%s send ZLP for req=%p\n", __func__, req); mtu3_clrbits(mbase, MU3D_EP_TXCR0(mep->epnum), TX_DMAREQEN); -- cgit From d9d1dc817020773c010498f5f81bb49439f7c962 Mon Sep 17 00:00:00 2001 From: Yangtao Li Date: Wed, 5 Dec 2018 11:26:39 -0500 Subject: USB: gadget: udc: s3c2410_udc: convert to DEFINE_SHOW_ATTRIBUTE Use DEFINE_SHOW_ATTRIBUTE macro to simplify the code. Signed-off-by: Yangtao Li Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/s3c2410_udc.c | 17 ++--------------- 1 file changed, 2 insertions(+), 15 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/udc/s3c2410_udc.c b/drivers/usb/gadget/udc/s3c2410_udc.c index 8bf5ad7a59ad..af3e63316ace 100644 --- a/drivers/usb/gadget/udc/s3c2410_udc.c +++ b/drivers/usb/gadget/udc/s3c2410_udc.c @@ -119,7 +119,7 @@ static void dprintk(int level, const char *fmt, ...) } #endif -static int s3c2410_udc_debugfs_seq_show(struct seq_file *m, void *p) +static int s3c2410_udc_debugfs_show(struct seq_file *m, void *p) { u32 addr_reg, pwr_reg, ep_int_reg, usb_int_reg; u32 ep_int_en_reg, usb_int_en_reg, ep0_csr; @@ -168,20 +168,7 @@ static int s3c2410_udc_debugfs_seq_show(struct seq_file *m, void *p) return 0; } - -static int s3c2410_udc_debugfs_fops_open(struct inode *inode, - struct file *file) -{ - return single_open(file, s3c2410_udc_debugfs_seq_show, NULL); -} - -static const struct file_operations s3c2410_udc_debugfs_fops = { - .open = s3c2410_udc_debugfs_fops_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, - .owner = THIS_MODULE, -}; +DEFINE_SHOW_ATTRIBUTE(s3c2410_udc_debugfs); /* io macros */ -- cgit From 3004cfd6204927c1294060b849029cf0c2651074 Mon Sep 17 00:00:00 2001 From: Stephan Gerhold Date: Thu, 6 Dec 2018 19:42:28 +0100 Subject: Revert "usb: dwc3: pci: Use devm functions to get the phy GPIOs" Commit 211f658b7b40 ("usb: dwc3: pci: Use devm functions to get the phy GPIOs") changed the code to claim the PHY GPIOs permanently for Intel Baytrail devices. This causes issues when the actual PHY driver attempts to claim the same GPIO descriptors. For example, tusb1210 now fails to probe with: tusb1210: probe of dwc3.0.auto.ulpi failed with error -16 (EBUSY) dwc3-pci needs to turn on the PHY once before dwc3 is loaded, but usually the PHY driver will then hold the GPIOs to turn off the PHY when requested (e.g. during suspend). To fix the problem, this reverts the commit to restore the old behavior to put the GPIOs immediately after usage. Link: https://www.spinics.net/lists/linux-usb/msg174681.html Cc: stable@vger.kernel.org Signed-off-by: Stephan Gerhold Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/dwc3-pci.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/dwc3-pci.c b/drivers/usb/dwc3/dwc3-pci.c index 842795856bf4..fdc6e4e403e8 100644 --- a/drivers/usb/dwc3/dwc3-pci.c +++ b/drivers/usb/dwc3/dwc3-pci.c @@ -170,20 +170,20 @@ static int dwc3_pci_quirks(struct dwc3_pci *dwc) * put the gpio descriptors again here because the phy driver * might want to grab them, too. */ - gpio = devm_gpiod_get_optional(&pdev->dev, "cs", - GPIOD_OUT_LOW); + gpio = gpiod_get_optional(&pdev->dev, "cs", GPIOD_OUT_LOW); if (IS_ERR(gpio)) return PTR_ERR(gpio); gpiod_set_value_cansleep(gpio, 1); + gpiod_put(gpio); - gpio = devm_gpiod_get_optional(&pdev->dev, "reset", - GPIOD_OUT_LOW); + gpio = gpiod_get_optional(&pdev->dev, "reset", GPIOD_OUT_LOW); if (IS_ERR(gpio)) return PTR_ERR(gpio); if (gpio) { gpiod_set_value_cansleep(gpio, 1); + gpiod_put(gpio); usleep_range(10000, 11000); } } -- cgit From f1fd62a6b6c62e10ceb97432e9616b575538b699 Mon Sep 17 00:00:00 2001 From: Zeng Tao Date: Fri, 7 Dec 2018 16:19:29 +0200 Subject: xhci: remove the unused sw_lpm_support It is introduced for the pre-0.96 xHC controllers, and the driver only support HW LPM for 1.0 and later controllers.It's not actually used now and is thought not to be used in the future any more, so just remove it. Signed-off-by: Zeng Tao Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-mem.c | 20 ++++---------------- drivers/usb/host/xhci.c | 3 +-- drivers/usb/host/xhci.h | 2 -- 3 files changed, 5 insertions(+), 20 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index b1f27aa38b10..791c5d844d60 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -2181,23 +2181,11 @@ static void xhci_add_in_port(struct xhci_hcd *xhci, unsigned int num_ports, if (major_revision < 0x03 && xhci->num_ext_caps < max_caps) xhci->ext_caps[xhci->num_ext_caps++] = temp; - /* Check the host's USB2 LPM capability */ - if ((xhci->hci_version == 0x96) && (major_revision != 0x03) && - (temp & XHCI_L1C)) { + if ((xhci->hci_version >= 0x100) && (major_revision != 0x03) && + (temp & XHCI_HLC)) { xhci_dbg_trace(xhci, trace_xhci_dbg_init, - "xHCI 0.96: support USB2 software lpm"); - xhci->sw_lpm_support = 1; - } - - if ((xhci->hci_version >= 0x100) && (major_revision != 0x03)) { - xhci_dbg_trace(xhci, trace_xhci_dbg_init, - "xHCI 1.0: support USB2 software lpm"); - xhci->sw_lpm_support = 1; - if (temp & XHCI_HLC) { - xhci_dbg_trace(xhci, trace_xhci_dbg_init, - "xHCI 1.0: support USB2 hardware lpm"); - xhci->hw_lpm_support = 1; - } + "xHCI 1.0: support USB2 hardware lpm"); + xhci->hw_lpm_support = 1; } port_offset--; diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index c928dbbff881..553e97442824 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -4370,8 +4370,7 @@ static int xhci_update_device(struct usb_hcd *hcd, struct usb_device *udev) struct xhci_hcd *xhci = hcd_to_xhci(hcd); int portnum = udev->portnum - 1; - if (hcd->speed >= HCD_USB3 || !xhci->sw_lpm_support || - !udev->lpm_capable) + if (hcd->speed >= HCD_USB3 || !udev->lpm_capable) return 0; /* we only support lpm for non-hub device connected to root hub yet */ diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index 260b259b72bc..59b8562a2ffe 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -1858,8 +1858,6 @@ struct xhci_hcd { struct xhci_port *hw_ports; struct xhci_hub usb2_rhub; struct xhci_hub usb3_rhub; - /* support xHCI 0.96 spec USB2 software LPM */ - unsigned sw_lpm_support:1; /* support xHCI 1.0 spec USB2 hardware LPM */ unsigned hw_lpm_support:1; /* cached usb2 extened protocol capabilites */ -- cgit From f6187f424c10210e8e9917d4b7035ddc935010f6 Mon Sep 17 00:00:00 2001 From: Mathias Nyman Date: Fri, 7 Dec 2018 16:19:30 +0200 Subject: xhci: move bus_state structure under the xhci_hub structure. Move the bus_state structure under struct usb_hub. We need a bus_state strucure for each roothub to keep track of suspend related info for each port. Instead of keeping an array of two bus_state structures right under struct xhci, it makes more sense move them to the xhci_hub structure. No functional changes. Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-hub.c | 15 ++++++--------- drivers/usb/host/xhci-mem.c | 10 +++++----- drivers/usb/host/xhci-ring.c | 2 +- drivers/usb/host/xhci.c | 19 ++++++++++--------- drivers/usb/host/xhci.h | 4 ++-- 5 files changed, 24 insertions(+), 26 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c index 94aca1b5ac8a..5dba0a40acad 100644 --- a/drivers/usb/host/xhci-hub.c +++ b/drivers/usb/host/xhci-hub.c @@ -1031,7 +1031,7 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, rhub = xhci_get_rhub(hcd); ports = rhub->ports; max_ports = rhub->num_ports; - bus_state = &xhci->bus_state[hcd_index(hcd)]; + bus_state = &rhub->bus_state; spin_lock_irqsave(&xhci->lock, flags); switch (typeReq) { @@ -1421,7 +1421,7 @@ int xhci_hub_status_data(struct usb_hcd *hcd, char *buf) rhub = xhci_get_rhub(hcd); ports = rhub->ports; max_ports = rhub->num_ports; - bus_state = &xhci->bus_state[hcd_index(hcd)]; + bus_state = &rhub->bus_state; /* Initial status is no changes */ retval = (max_ports + 8) / 8; @@ -1480,7 +1480,7 @@ int xhci_bus_suspend(struct usb_hcd *hcd) rhub = xhci_get_rhub(hcd); ports = rhub->ports; max_ports = rhub->num_ports; - bus_state = &xhci->bus_state[hcd_index(hcd)]; + bus_state = &rhub->bus_state; wake_enabled = hcd->self.root_hub->do_remote_wakeup; spin_lock_irqsave(&xhci->lock, flags); @@ -1622,7 +1622,7 @@ int xhci_bus_resume(struct usb_hcd *hcd) rhub = xhci_get_rhub(hcd); ports = rhub->ports; max_ports = rhub->num_ports; - bus_state = &xhci->bus_state[hcd_index(hcd)]; + bus_state = &rhub->bus_state; if (time_before(jiffies, bus_state->next_statechange)) msleep(5); @@ -1723,13 +1723,10 @@ int xhci_bus_resume(struct usb_hcd *hcd) unsigned long xhci_get_resuming_ports(struct usb_hcd *hcd) { - struct xhci_hcd *xhci = hcd_to_xhci(hcd); - struct xhci_bus_state *bus_state; - - bus_state = &xhci->bus_state[hcd_index(hcd)]; + struct xhci_hub *rhub = xhci_get_rhub(hcd); /* USB3 port wakeups are reported via usb_wakeup_notification() */ - return bus_state->resuming_ports; /* USB2 ports only */ + return rhub->bus_state.resuming_ports; /* USB2 ports only */ } #endif /* CONFIG_PM */ diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index 791c5d844d60..36a3eb8849f1 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -1922,8 +1922,8 @@ no_bw: xhci->page_size = 0; xhci->page_shift = 0; - xhci->bus_state[0].bus_suspended = 0; - xhci->bus_state[1].bus_suspended = 0; + xhci->usb2_rhub.bus_state.bus_suspended = 0; + xhci->usb3_rhub.bus_state.bus_suspended = 0; } static int xhci_test_trb_in_td(struct xhci_hcd *xhci, @@ -2524,10 +2524,10 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags) for (i = 0; i < MAX_HC_SLOTS; i++) xhci->devs[i] = NULL; for (i = 0; i < USB_MAXCHILDREN; i++) { - xhci->bus_state[0].resume_done[i] = 0; - xhci->bus_state[1].resume_done[i] = 0; + xhci->usb2_rhub.bus_state.resume_done[i] = 0; + xhci->usb3_rhub.bus_state.resume_done[i] = 0; /* Only the USB 2.0 completions will ever be used. */ - init_completion(&xhci->bus_state[1].rexit_done[i]); + init_completion(&xhci->usb2_rhub.bus_state.rexit_done[i]); } if (scratchpad_alloc(xhci, flags)) diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 65750582133f..40fa25c4d041 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -1593,7 +1593,7 @@ static void handle_port_status(struct xhci_hcd *xhci, } hcd = port->rhub->hcd; - bus_state = &xhci->bus_state[hcd_index(hcd)]; + bus_state = &port->rhub->bus_state; hcd_portnum = port->hcd_portnum; portsc = readl(port->addr); diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index 553e97442824..6631e7f363b3 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -169,7 +169,7 @@ int xhci_reset(struct xhci_hcd *xhci) { u32 command; u32 state; - int ret, i; + int ret; state = readl(&xhci->op_regs->status); @@ -215,11 +215,12 @@ int xhci_reset(struct xhci_hcd *xhci) ret = xhci_handshake(&xhci->op_regs->status, STS_CNR, 0, 10 * 1000 * 1000); - for (i = 0; i < 2; i++) { - xhci->bus_state[i].port_c_suspend = 0; - xhci->bus_state[i].suspended_ports = 0; - xhci->bus_state[i].resuming_ports = 0; - } + xhci->usb2_rhub.bus_state.port_c_suspend = 0; + xhci->usb2_rhub.bus_state.suspended_ports = 0; + xhci->usb2_rhub.bus_state.resuming_ports = 0; + xhci->usb3_rhub.bus_state.port_c_suspend = 0; + xhci->usb3_rhub.bus_state.suspended_ports = 0; + xhci->usb3_rhub.bus_state.resuming_ports = 0; return ret; } @@ -1069,9 +1070,9 @@ int xhci_resume(struct xhci_hcd *xhci, bool hibernated) /* Wait a bit if either of the roothubs need to settle from the * transition into bus suspend. */ - if (time_before(jiffies, xhci->bus_state[0].next_statechange) || - time_before(jiffies, - xhci->bus_state[1].next_statechange)) + + if (time_before(jiffies, xhci->usb2_rhub.bus_state.next_statechange) || + time_before(jiffies, xhci->usb3_rhub.bus_state.next_statechange)) msleep(100); set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index 59b8562a2ffe..b57b7934fae1 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -1700,6 +1700,8 @@ struct xhci_hub { struct xhci_port **ports; unsigned int num_ports; struct usb_hcd *hcd; + /* keep track of bus suspend info */ + struct xhci_bus_state bus_state; /* supported prococol extended capabiliy values */ u8 maj_rev; u8 min_rev; @@ -1853,8 +1855,6 @@ struct xhci_hcd { unsigned int num_active_eps; unsigned int limit_active_eps; - /* There are two roothubs to keep track of bus suspend info for */ - struct xhci_bus_state bus_state[2]; struct xhci_port *hw_ports; struct xhci_hub usb2_rhub; struct xhci_hub usb3_rhub; -- cgit From 1c2d81cc287c59161b19c5810f0091fe33448e07 Mon Sep 17 00:00:00 2001 From: Mathias Nyman Date: Fri, 7 Dec 2018 16:19:31 +0200 Subject: xhci: remove unused hcd_index() Now that each root hub has their own bus_state strucure the hcd_undex() used to get the correct bus_state strucure is no longer needed. No functional changes Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci.h | 7 ------- 1 file changed, 7 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index b57b7934fae1..3c6b5049464a 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -1682,13 +1682,6 @@ struct xhci_bus_state { */ #define XHCI_MAX_REXIT_TIMEOUT_MS 20 -static inline unsigned int hcd_index(struct usb_hcd *hcd) -{ - if (hcd->speed >= HCD_USB3) - return 0; - else - return 1; -} struct xhci_port { __le32 __iomem *addr; int hw_portnum; -- cgit From 5f78a54f8d31e86aedd50f5b4d148dfeabafe88a Mon Sep 17 00:00:00 2001 From: Mathias Nyman Date: Fri, 7 Dec 2018 16:19:32 +0200 Subject: xhci: move usb3 speficic bits to own function in get_port_status call refactoring, no functional changes Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-hub.c | 68 ++++++++++++++++++++++++++------------------- 1 file changed, 40 insertions(+), 28 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c index 5dba0a40acad..60aeff3e154b 100644 --- a/drivers/usb/host/xhci-hub.c +++ b/drivers/usb/host/xhci-hub.c @@ -818,6 +818,41 @@ static u32 xhci_get_ext_port_status(u32 raw_port_status, u32 port_li) return ext_stat; } +static void xhci_get_usb3_port_status(struct xhci_port *port, u32 *status, + u32 portsc) +{ + struct xhci_hcd *xhci; + u32 link_state; + u32 portnum; + + xhci = hcd_to_xhci(port->rhub->hcd); + link_state = portsc & PORT_PLS_MASK; + portnum = port->hcd_portnum; + + /* USB3 specific wPortChange bits + * + * Port link change with port in resume state should not be + * reported to usbcore, as this is an internal state to be + * handled by xhci driver. Reporting PLC to usbcore may + * cause usbcore clearing PLC first and port change event + * irq won't be generated. + */ + + if (portsc & PORT_PLC && (link_state != XDEV_RESUME)) + *status |= USB_PORT_STAT_C_LINK_STATE << 16; + if (portsc & PORT_WRC) + *status |= USB_PORT_STAT_C_BH_RESET << 16; + if (portsc & PORT_CEC) + *status |= USB_PORT_STAT_C_CONFIG_ERROR << 16; + + /* USB3 specific wPortStatus bits */ + if (portsc & PORT_POWER) + *status |= USB_SS_PORT_STAT_POWER; + + xhci_hub_report_usb3_link_state(xhci, status, portsc); + xhci_del_comp_mod_timer(xhci, portsc, portnum); +} + /* * Converts a raw xHCI port status into the format that external USB 2.0 or USB * 3.0 hubs use. @@ -854,22 +889,8 @@ static u32 xhci_get_port_status(struct usb_hcd *hcd, if ((raw_port_status & PORT_RC)) status |= USB_PORT_STAT_C_RESET << 16; /* USB3.0 only */ - if (hcd->speed >= HCD_USB3) { - /* Port link change with port in resume state should not be - * reported to usbcore, as this is an internal state to be - * handled by xhci driver. Reporting PLC to usbcore may - * cause usbcore clearing PLC first and port change event - * irq won't be generated. - */ - if ((raw_port_status & PORT_PLC) && - (raw_port_status & PORT_PLS_MASK) != XDEV_RESUME) - status |= USB_PORT_STAT_C_LINK_STATE << 16; - if ((raw_port_status & PORT_WRC)) - status |= USB_PORT_STAT_C_BH_RESET << 16; - if ((raw_port_status & PORT_CEC)) - status |= USB_PORT_STAT_C_CONFIG_ERROR << 16; - } - + if (hcd->speed >= HCD_USB3) + xhci_get_usb3_port_status(port, &status, raw_port_status); if (hcd->speed < HCD_USB3) { if ((raw_port_status & PORT_PLS_MASK) == XDEV_U3 && (raw_port_status & PORT_POWER)) @@ -989,22 +1010,13 @@ static u32 xhci_get_port_status(struct usb_hcd *hcd, if (raw_port_status & PORT_RESET) status |= USB_PORT_STAT_RESET; if (raw_port_status & PORT_POWER) { - if (hcd->speed >= HCD_USB3) - status |= USB_SS_PORT_STAT_POWER; - else + if (hcd->speed < HCD_USB3) status |= USB_PORT_STAT_POWER; } /* Update Port Link State */ - if (hcd->speed >= HCD_USB3) { - xhci_hub_report_usb3_link_state(xhci, &status, raw_port_status); - /* - * Verify if all USB3 Ports Have entered U0 already. - * Delete Compliance Mode Timer if so. - */ - xhci_del_comp_mod_timer(xhci, raw_port_status, wIndex); - } else { + if (hcd->speed < HCD_USB3) xhci_hub_report_usb2_link_state(&status, raw_port_status); - } + if (bus_state->port_c_suspend & (1 << wIndex)) status |= USB_PORT_STAT_C_SUSPEND << 16; -- cgit From 70e9b53dfedced674d054166aae6e0366489eb86 Mon Sep 17 00:00:00 2001 From: Mathias Nyman Date: Fri, 7 Dec 2018 16:19:33 +0200 Subject: xhci: move usb2 speficic bits to own function in get_port_status call Mostly refactoring, with the exception that USB_PORT_STAT_L1 link state is reported if xhci port link is in U2 AND port is powered. Previously we did not check if the port was powered, but according to xhci spec 4.19.1.1.6 All the 'Enabled' states, including USB_PORT_STAT_L1 (U2), U1, U0 and U3 must have Port power bit set. Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-hub.c | 44 ++++++++++++++++++++++++-------------------- 1 file changed, 24 insertions(+), 20 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c index 60aeff3e154b..5af4f90489a0 100644 --- a/drivers/usb/host/xhci-hub.c +++ b/drivers/usb/host/xhci-hub.c @@ -714,13 +714,6 @@ void xhci_test_and_clear_bit(struct xhci_hcd *xhci, struct xhci_port *port, } } -/* Updates Link Status for USB 2.1 port */ -static void xhci_hub_report_usb2_link_state(u32 *status, u32 status_reg) -{ - if ((status_reg & PORT_PLS_MASK) == XDEV_U2) - *status |= USB_PORT_STAT_L1; -} - /* Updates Link Status for super Speed port */ static void xhci_hub_report_usb3_link_state(struct xhci_hcd *xhci, u32 *status, u32 status_reg) @@ -853,6 +846,25 @@ static void xhci_get_usb3_port_status(struct xhci_port *port, u32 *status, xhci_del_comp_mod_timer(xhci, portsc, portnum); } +static void xhci_get_usb2_port_status(struct xhci_port *port, u32 *status, + u32 portsc) +{ + u32 link_state; + + link_state = portsc & PORT_PLS_MASK; + + /* USB2 wPortStatus bits */ + if (portsc & PORT_POWER) { + *status |= USB_PORT_STAT_POWER; + + /* link state is only valid if port is powered */ + if (link_state == XDEV_U3) + *status |= USB_PORT_STAT_SUSPEND; + if (link_state == XDEV_U2) + *status |= USB_PORT_STAT_L1; + } +} + /* * Converts a raw xHCI port status into the format that external USB 2.0 or USB * 3.0 hubs use. @@ -888,14 +900,13 @@ static u32 xhci_get_port_status(struct usb_hcd *hcd, status |= USB_PORT_STAT_C_OVERCURRENT << 16; if ((raw_port_status & PORT_RC)) status |= USB_PORT_STAT_C_RESET << 16; - /* USB3.0 only */ + + /* USB2 and USB3 specific bits including Port Link State */ if (hcd->speed >= HCD_USB3) xhci_get_usb3_port_status(port, &status, raw_port_status); - if (hcd->speed < HCD_USB3) { - if ((raw_port_status & PORT_PLS_MASK) == XDEV_U3 - && (raw_port_status & PORT_POWER)) - status |= USB_PORT_STAT_SUSPEND; - } + else + xhci_get_usb2_port_status(port, &status, raw_port_status); + if ((raw_port_status & PORT_PLS_MASK) == XDEV_RESUME && !DEV_SUPERSPEED_ANY(raw_port_status) && hcd->speed < HCD_USB3) { if ((raw_port_status & PORT_RESET) || @@ -1009,13 +1020,6 @@ static u32 xhci_get_port_status(struct usb_hcd *hcd, status |= USB_PORT_STAT_OVERCURRENT; if (raw_port_status & PORT_RESET) status |= USB_PORT_STAT_RESET; - if (raw_port_status & PORT_POWER) { - if (hcd->speed < HCD_USB3) - status |= USB_PORT_STAT_POWER; - } - /* Update Port Link State */ - if (hcd->speed < HCD_USB3) - xhci_hub_report_usb2_link_state(&status, raw_port_status); if (bus_state->port_c_suspend & (1 << wIndex)) status |= USB_PORT_STAT_C_SUSPEND << 16; -- cgit From 3c2ddb449a91df849b65be7509a575930c7eb5eb Mon Sep 17 00:00:00 2001 From: Mathias Nyman Date: Fri, 7 Dec 2018 16:19:34 +0200 Subject: xhci: cleanup code that sets portstatus and portchange bits Group the code where the wPortstatus and wPortChange bits are set into one place. No functional changes Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-hub.c | 26 ++++++++++++++------------ 1 file changed, 14 insertions(+), 12 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c index 5af4f90489a0..c0de2d017d39 100644 --- a/drivers/usb/host/xhci-hub.c +++ b/drivers/usb/host/xhci-hub.c @@ -891,7 +891,7 @@ static u32 xhci_get_port_status(struct usb_hcd *hcd, rhub = xhci_get_rhub(hcd); port = rhub->ports[wIndex]; - /* wPortChange bits */ + /* common wPortChange bits */ if (raw_port_status & PORT_CSC) status |= USB_PORT_STAT_C_CONNECTION << 16; if (raw_port_status & PORT_PEC) @@ -901,7 +901,19 @@ static u32 xhci_get_port_status(struct usb_hcd *hcd, if ((raw_port_status & PORT_RC)) status |= USB_PORT_STAT_C_RESET << 16; - /* USB2 and USB3 specific bits including Port Link State */ + /* common wPortStatus bits */ + if (raw_port_status & PORT_CONNECT) { + status |= USB_PORT_STAT_CONNECTION; + status |= xhci_port_speed(raw_port_status); + } + if (raw_port_status & PORT_PE) + status |= USB_PORT_STAT_ENABLE; + if (raw_port_status & PORT_OC) + status |= USB_PORT_STAT_OVERCURRENT; + if (raw_port_status & PORT_RESET) + status |= USB_PORT_STAT_RESET; + + /* USB2 and USB3 specific bits, including Port Link State */ if (hcd->speed >= HCD_USB3) xhci_get_usb3_port_status(port, &status, raw_port_status); else @@ -1010,16 +1022,6 @@ static u32 xhci_get_port_status(struct usb_hcd *hcd, bus_state->resume_done[wIndex] = 0; clear_bit(wIndex, &bus_state->resuming_ports); } - if (raw_port_status & PORT_CONNECT) { - status |= USB_PORT_STAT_CONNECTION; - status |= xhci_port_speed(raw_port_status); - } - if (raw_port_status & PORT_PE) - status |= USB_PORT_STAT_ENABLE; - if (raw_port_status & PORT_OC) - status |= USB_PORT_STAT_OVERCURRENT; - if (raw_port_status & PORT_RESET) - status |= USB_PORT_STAT_RESET; if (bus_state->port_c_suspend & (1 << wIndex)) status |= USB_PORT_STAT_C_SUSPEND << 16; -- cgit From a231ec41e6f6433daf4c693f169f6c5cfda8cb9d Mon Sep 17 00:00:00 2001 From: Mathias Nyman Date: Fri, 7 Dec 2018 16:19:35 +0200 Subject: xhci: refactor U0 link state handling in get_port_status Move U0 link state handing to USB3 and USB2 specific functions Note that bus_state->resuming_ports: bus_state->resume_done[]: are only used for USB2, and don't need to cleared for USB3 ports No functional changes Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-hub.c | 32 +++++++++++++++++++------------- 1 file changed, 19 insertions(+), 13 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c index c0de2d017d39..d86d1d50bfd2 100644 --- a/drivers/usb/host/xhci-hub.c +++ b/drivers/usb/host/xhci-hub.c @@ -814,10 +814,12 @@ static u32 xhci_get_ext_port_status(u32 raw_port_status, u32 port_li) static void xhci_get_usb3_port_status(struct xhci_port *port, u32 *status, u32 portsc) { + struct xhci_bus_state *bus_state; struct xhci_hcd *xhci; u32 link_state; u32 portnum; + bus_state = &port->rhub->bus_state; xhci = hcd_to_xhci(port->rhub->hcd); link_state = portsc & PORT_PLS_MASK; portnum = port->hcd_portnum; @@ -839,8 +841,12 @@ static void xhci_get_usb3_port_status(struct xhci_port *port, u32 *status, *status |= USB_PORT_STAT_C_CONFIG_ERROR << 16; /* USB3 specific wPortStatus bits */ - if (portsc & PORT_POWER) + if (portsc & PORT_POWER) { *status |= USB_SS_PORT_STAT_POWER; + /* link state handling */ + if (link_state == XDEV_U0) + bus_state->suspended_ports &= ~(1 << portnum); + } xhci_hub_report_usb3_link_state(xhci, status, portsc); xhci_del_comp_mod_timer(xhci, portsc, portnum); @@ -849,9 +855,13 @@ static void xhci_get_usb3_port_status(struct xhci_port *port, u32 *status, static void xhci_get_usb2_port_status(struct xhci_port *port, u32 *status, u32 portsc) { + struct xhci_bus_state *bus_state; u32 link_state; + u32 portnum; + bus_state = &port->rhub->bus_state; link_state = portsc & PORT_PLS_MASK; + portnum = port->hcd_portnum; /* USB2 wPortStatus bits */ if (portsc & PORT_POWER) { @@ -862,6 +872,14 @@ static void xhci_get_usb2_port_status(struct xhci_port *port, u32 *status, *status |= USB_PORT_STAT_SUSPEND; if (link_state == XDEV_U2) *status |= USB_PORT_STAT_L1; + if (link_state == XDEV_U0) { + bus_state->resume_done[portnum] = 0; + clear_bit(portnum, &bus_state->resuming_ports); + if (bus_state->suspended_ports & (1 << portnum)) { + bus_state->suspended_ports &= ~(1 << portnum); + bus_state->port_c_suspend |= 1 << portnum; + } + } } } @@ -1011,18 +1029,6 @@ static u32 xhci_get_port_status(struct usb_hcd *hcd, usb_hcd_end_port_resume(&hcd->self, wIndex); } - - if ((raw_port_status & PORT_PLS_MASK) == XDEV_U0 && - (raw_port_status & PORT_POWER)) { - if (bus_state->suspended_ports & (1 << wIndex)) { - bus_state->suspended_ports &= ~(1 << wIndex); - if (hcd->speed < HCD_USB3) - bus_state->port_c_suspend |= 1 << wIndex; - } - bus_state->resume_done[wIndex] = 0; - clear_bit(wIndex, &bus_state->resuming_ports); - } - if (bus_state->port_c_suspend & (1 << wIndex)) status |= USB_PORT_STAT_C_SUSPEND << 16; -- cgit From e67ebf1b3815b2d1fc505dba182761c0be6c179d Mon Sep 17 00:00:00 2001 From: Mathias Nyman Date: Fri, 7 Dec 2018 16:19:36 +0200 Subject: xhci: move usb2 get port status link resume handling to its own function Refactoring, no functional changes. But worth mentioning that checking for port link resume state is now behind a additional port power check. This is fine as ports can't be in resume state if port power bit is not set. xhci spec section 4.19.1.1.6 figure 34 shows that port power bit must be set for all 'Enable' substates, including U0,U1,U2,U3 (suspended), Resume, and RExit states. Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-hub.c | 188 ++++++++++++++++++++++++-------------------- 1 file changed, 104 insertions(+), 84 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c index d86d1d50bfd2..c7601750c37f 100644 --- a/drivers/usb/host/xhci-hub.c +++ b/drivers/usb/host/xhci-hub.c @@ -795,6 +795,100 @@ static void xhci_del_comp_mod_timer(struct xhci_hcd *xhci, u32 status, } } +static int xhci_handle_usb2_port_link_resume(struct xhci_port *port, + u32 *status, u32 portsc, + unsigned long flags) +{ + struct xhci_bus_state *bus_state; + struct xhci_hcd *xhci; + struct usb_hcd *hcd; + int slot_id; + u32 wIndex; + + hcd = port->rhub->hcd; + bus_state = &port->rhub->bus_state; + xhci = hcd_to_xhci(hcd); + wIndex = port->hcd_portnum; + + if ((portsc & PORT_RESET) || !(portsc & PORT_PE)) { + *status = 0xffffffff; + return -EINVAL; + } + /* did port event handler already start resume timing? */ + if (!bus_state->resume_done[wIndex]) { + /* If not, maybe we are in a host initated resume? */ + if (test_bit(wIndex, &bus_state->resuming_ports)) { + /* Host initated resume doesn't time the resume + * signalling using resume_done[]. + * It manually sets RESUME state, sleeps 20ms + * and sets U0 state. This should probably be + * changed, but not right now. + */ + } else { + /* port resume was discovered now and here, + * start resume timing + */ + unsigned long timeout = jiffies + + msecs_to_jiffies(USB_RESUME_TIMEOUT); + + set_bit(wIndex, &bus_state->resuming_ports); + bus_state->resume_done[wIndex] = timeout; + mod_timer(&hcd->rh_timer, timeout); + usb_hcd_start_port_resume(&hcd->self, wIndex); + } + /* Has resume been signalled for USB_RESUME_TIME yet? */ + } else if (time_after_eq(jiffies, bus_state->resume_done[wIndex])) { + int time_left; + + xhci_dbg(xhci, "Resume USB2 port %d\n", wIndex + 1); + bus_state->resume_done[wIndex] = 0; + clear_bit(wIndex, &bus_state->resuming_ports); + + set_bit(wIndex, &bus_state->rexit_ports); + + xhci_test_and_clear_bit(xhci, port, PORT_PLC); + xhci_set_link_state(xhci, port, XDEV_U0); + + spin_unlock_irqrestore(&xhci->lock, flags); + time_left = wait_for_completion_timeout( + &bus_state->rexit_done[wIndex], + msecs_to_jiffies(XHCI_MAX_REXIT_TIMEOUT_MS)); + spin_lock_irqsave(&xhci->lock, flags); + + if (time_left) { + slot_id = xhci_find_slot_id_by_port(hcd, xhci, + wIndex + 1); + if (!slot_id) { + xhci_dbg(xhci, "slot_id is zero\n"); + *status = 0xffffffff; + return -ENODEV; + } + xhci_ring_device(xhci, slot_id); + } else { + int port_status = readl(port->addr); + + xhci_warn(xhci, "Port resume %i msec timed out, portsc = 0x%x\n", + XHCI_MAX_REXIT_TIMEOUT_MS, + port_status); + *status |= USB_PORT_STAT_SUSPEND; + clear_bit(wIndex, &bus_state->rexit_ports); + } + + usb_hcd_end_port_resume(&hcd->self, wIndex); + bus_state->port_c_suspend |= 1 << wIndex; + bus_state->suspended_ports &= ~(1 << wIndex); + } else { + /* + * The resume has been signaling for less than + * USB_RESUME_TIME. Report the port status as SUSPEND, + * let the usbcore check port status again and clear + * resume signaling later. + */ + *status |= USB_PORT_STAT_SUSPEND; + } + return 0; +} + static u32 xhci_get_ext_port_status(u32 raw_port_status, u32 port_li) { u32 ext_stat = 0; @@ -853,11 +947,12 @@ static void xhci_get_usb3_port_status(struct xhci_port *port, u32 *status, } static void xhci_get_usb2_port_status(struct xhci_port *port, u32 *status, - u32 portsc) + u32 portsc, unsigned long flags) { struct xhci_bus_state *bus_state; u32 link_state; u32 portnum; + int ret; bus_state = &port->rhub->bus_state; link_state = portsc & PORT_PLS_MASK; @@ -880,6 +975,12 @@ static void xhci_get_usb2_port_status(struct xhci_port *port, u32 *status, bus_state->port_c_suspend |= 1 << portnum; } } + if (link_state == XDEV_RESUME) { + ret = xhci_handle_usb2_port_link_resume(port, status, + portsc, flags); + if (ret) + return; + } } } @@ -900,9 +1001,7 @@ static u32 xhci_get_port_status(struct usb_hcd *hcd, __releases(&xhci->lock) __acquires(&xhci->lock) { - struct xhci_hcd *xhci = hcd_to_xhci(hcd); u32 status = 0; - int slot_id; struct xhci_hub *rhub; struct xhci_port *port; @@ -935,87 +1034,8 @@ static u32 xhci_get_port_status(struct usb_hcd *hcd, if (hcd->speed >= HCD_USB3) xhci_get_usb3_port_status(port, &status, raw_port_status); else - xhci_get_usb2_port_status(port, &status, raw_port_status); - - if ((raw_port_status & PORT_PLS_MASK) == XDEV_RESUME && - !DEV_SUPERSPEED_ANY(raw_port_status) && hcd->speed < HCD_USB3) { - if ((raw_port_status & PORT_RESET) || - !(raw_port_status & PORT_PE)) - return 0xffffffff; - /* did port event handler already start resume timing? */ - if (!bus_state->resume_done[wIndex]) { - /* If not, maybe we are in a host initated resume? */ - if (test_bit(wIndex, &bus_state->resuming_ports)) { - /* Host initated resume doesn't time the resume - * signalling using resume_done[]. - * It manually sets RESUME state, sleeps 20ms - * and sets U0 state. This should probably be - * changed, but not right now. - */ - } else { - /* port resume was discovered now and here, - * start resume timing - */ - unsigned long timeout = jiffies + - msecs_to_jiffies(USB_RESUME_TIMEOUT); - - set_bit(wIndex, &bus_state->resuming_ports); - bus_state->resume_done[wIndex] = timeout; - mod_timer(&hcd->rh_timer, timeout); - usb_hcd_start_port_resume(&hcd->self, wIndex); - } - /* Has resume been signalled for USB_RESUME_TIME yet? */ - } else if (time_after_eq(jiffies, - bus_state->resume_done[wIndex])) { - int time_left; - - xhci_dbg(xhci, "Resume USB2 port %d\n", - wIndex + 1); - bus_state->resume_done[wIndex] = 0; - clear_bit(wIndex, &bus_state->resuming_ports); - - set_bit(wIndex, &bus_state->rexit_ports); - - xhci_test_and_clear_bit(xhci, port, PORT_PLC); - xhci_set_link_state(xhci, port, XDEV_U0); - - spin_unlock_irqrestore(&xhci->lock, flags); - time_left = wait_for_completion_timeout( - &bus_state->rexit_done[wIndex], - msecs_to_jiffies( - XHCI_MAX_REXIT_TIMEOUT_MS)); - spin_lock_irqsave(&xhci->lock, flags); - - if (time_left) { - slot_id = xhci_find_slot_id_by_port(hcd, - xhci, wIndex + 1); - if (!slot_id) { - xhci_dbg(xhci, "slot_id is zero\n"); - return 0xffffffff; - } - xhci_ring_device(xhci, slot_id); - } else { - int port_status = readl(port->addr); - xhci_warn(xhci, "Port resume took longer than %i msec, port status = 0x%x\n", - XHCI_MAX_REXIT_TIMEOUT_MS, - port_status); - status |= USB_PORT_STAT_SUSPEND; - clear_bit(wIndex, &bus_state->rexit_ports); - } - - usb_hcd_end_port_resume(&hcd->self, wIndex); - bus_state->port_c_suspend |= 1 << wIndex; - bus_state->suspended_ports &= ~(1 << wIndex); - } else { - /* - * The resume has been signaling for less than - * USB_RESUME_TIME. Report the port status as SUSPEND, - * let the usbcore check port status again and clear - * resume signaling later. - */ - status |= USB_PORT_STAT_SUSPEND; - } - } + xhci_get_usb2_port_status(port, &status, raw_port_status, + flags); /* * Clear stale usb2 resume signalling variables in case port changed * state during resume signalling. For example on error -- cgit From cc10ce0c51b13d1566d0ec1dcb472fb86330b391 Mon Sep 17 00:00:00 2001 From: Martin Blumenstingl Date: Sun, 9 Dec 2018 20:01:29 +0100 Subject: usb: dwc2: disable power_down on Amlogic devices Disable power_down by setting the parameter to DWC2_POWER_DOWN_PARAM_NONE. This fixes a problem on various Amlogic Meson SoCs where USB devices are only recognized when plugged in before booting Linux. A hot-plugged USB device was not detected even though the device got power (my USB thumb drive for example has an LED which lit up). A similar fix was implemented for Rockchip SoCs in commit c216765d3a1def ("usb: dwc2: disable power_down on rockchip devices"). That commit suggests that a change in the dwc2 driver is the cause because the default value for the "hibernate" parameter (which then got renamed to "power_down" to support other modes) was changed in the v4.17 merge window with: commit 6d23ee9caa6790 ("Merge tag 'usb-for-v4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-testing"). Cc: # 4.19 Acked-by: Minas Harutyunyan Suggested-by: Christian Hewitt Signed-off-by: Martin Blumenstingl Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/params.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc2/params.c b/drivers/usb/dwc2/params.c index 266157ae179a..24ff5f21cb25 100644 --- a/drivers/usb/dwc2/params.c +++ b/drivers/usb/dwc2/params.c @@ -118,6 +118,7 @@ static void dwc2_set_amlogic_params(struct dwc2_hsotg *hsotg) p->phy_type = DWC2_PHY_TYPE_PARAM_UTMI; p->ahbcfg = GAHBCFG_HBSTLEN_INCR8 << GAHBCFG_HBSTLEN_SHIFT; + p->power_down = DWC2_POWER_DOWN_PARAM_NONE; } static void dwc2_set_amcc_params(struct dwc2_hsotg *hsotg) -- cgit From 01688a6d66b5aaa06f49d4d1336a9ee641fe3c46 Mon Sep 17 00:00:00 2001 From: YueHaibing Date: Fri, 7 Dec 2018 02:50:42 +0000 Subject: USB: serial: mos7840: remove set but not used variables 'number, serial' Fixes gcc '-Wunused-but-set-variable' warning: drivers/usb/serial/mos7840.c: In function 'mos7840_send_cmd_write_baud_rate': drivers/usb/serial/mos7840.c:1584:16: warning: variable 'number' set but not used [-Wunused-but-set-variable] drivers/usb/serial/mos7840.c: In function 'mos7840_change_port_settings': drivers/usb/serial/mos7840.c:1695:21: warning: variable 'serial' set but not used [-Wunused-but-set-variable] 'number' never used since introduction in commit 3f5429746d91 ("USB: Moschip 7840 USB-Serial Driver") 'serial' not used since commit 5833041f1b13 ("USB: serial: remove unnecessary reinitialisations of urb->dev") Signed-off-by: YueHaibing Signed-off-by: Johan Hovold --- drivers/usb/serial/mos7840.c | 6 ------ 1 file changed, 6 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c index 6ff6d67b6d5a..a698d46ba773 100644 --- a/drivers/usb/serial/mos7840.c +++ b/drivers/usb/serial/mos7840.c @@ -1581,7 +1581,6 @@ static int mos7840_send_cmd_write_baud_rate(struct moschip_port *mos7840_port, int divisor = 0; int status; __u16 Data; - unsigned char number; __u16 clk_sel_val; struct usb_serial_port *port; @@ -1595,8 +1594,6 @@ static int mos7840_send_cmd_write_baud_rate(struct moschip_port *mos7840_port, if (mos7840_serial_paranoia_check(port->serial, __func__)) return -1; - number = mos7840_port->port->port_number; - dev_dbg(&port->dev, "%s - baud = %d\n", __func__, baudRate); /* reset clk_uart_sel in spregOffset */ if (baudRate > 115200) { @@ -1692,7 +1689,6 @@ static void mos7840_change_port_settings(struct tty_struct *tty, int status; __u16 Data; struct usb_serial_port *port; - struct usb_serial *serial; if (mos7840_port == NULL) return; @@ -1705,8 +1701,6 @@ static void mos7840_change_port_settings(struct tty_struct *tty, if (mos7840_serial_paranoia_check(port->serial, __func__)) return; - serial = port->serial; - if (!mos7840_port->open) { dev_dbg(&port->dev, "%s - port not opened\n", __func__); return; -- cgit From 244add8ebfb231c39db9e33b204bd0ce8f24f782 Mon Sep 17 00:00:00 2001 From: Tejas Joglekar Date: Mon, 10 Dec 2018 16:08:13 +0530 Subject: usb: dwc3: gadget: Disable CSP for stream OUT ep In stream mode, when fast-forwarding TRBs, the stream number is not cleared causing the new stream to not get assigned. So we don't want controller to carry on transfers when short packet is received. So disable the CSP for stream capable endpoint. This is based on the 3.30a Programming guide, where table 3-1 device descriptor structure field definitions says for CSP bit If this bit is 0, the controller generates an XferComplete event and remove the stream. So if we keep CSP as 1 then switching between streams would not happen as in stream mode, when fast-forwarding TRBs, the stream number is not cleared causing the new stream to not get assigned. Signed-off-by: Tejas Joglekar Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/gadget.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index e2caf9eec30a..2ecde30ad0b7 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -986,9 +986,13 @@ static void __dwc3_prepare_one_trb(struct dwc3_ep *dep, struct dwc3_trb *trb, usb_endpoint_type(dep->endpoint.desc)); } - /* always enable Continue on Short Packet */ + /* + * Enable Continue on Short Packet + * when endpoint is not a stream capable + */ if (usb_endpoint_dir_out(dep->endpoint.desc)) { - trb->ctrl |= DWC3_TRB_CTRL_CSP; + if (!dep->stream_capable) + trb->ctrl |= DWC3_TRB_CTRL_CSP; if (short_not_ok) trb->ctrl |= DWC3_TRB_CTRL_ISP_IMI; -- cgit From 014abe34a9095daaa6cbb2693ee90bbb54674693 Mon Sep 17 00:00:00 2001 From: Peter Chen Date: Mon, 15 Oct 2018 17:02:57 +0800 Subject: usb: chipidea: add flag for imx hsic implementation NXP (Freecale) imx HSIC design has some special requirements, add some flags at host code to handle them. Reviewed-by: Frieder Schrempf Tested-by: Frieder Schrempf Signed-off-by: Peter Chen --- drivers/usb/chipidea/host.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/chipidea/host.c b/drivers/usb/chipidea/host.c index d858a82c4f44..028a3574266a 100644 --- a/drivers/usb/chipidea/host.c +++ b/drivers/usb/chipidea/host.c @@ -170,6 +170,11 @@ static int host_start(struct ci_hdrc *ci) otg->host = &hcd->self; hcd->self.otg_port = 1; } + + if (ci->platdata->notify_event && + (ci->platdata->flags & CI_HDRC_IMX_IS_HSIC)) + ci->platdata->notify_event + (ci, CI_HDRC_IMX_HSIC_ACTIVE_EVENT); } return ret; @@ -218,6 +223,8 @@ void ci_hdrc_host_destroy(struct ci_hdrc *ci) static int ci_ehci_bus_suspend(struct usb_hcd *hcd) { struct ehci_hcd *ehci = hcd_to_ehci(hcd); + struct device *dev = hcd->self.controller; + struct ci_hdrc *ci = dev_get_drvdata(dev); int port; u32 tmp; @@ -249,6 +256,16 @@ static int ci_ehci_bus_suspend(struct usb_hcd *hcd) * It needs a short delay between set RS bit and PHCD. */ usleep_range(150, 200); + /* + * Need to clear WKCN and WKOC for imx HSIC, + * otherwise, there will be wakeup event. + */ + if (ci->platdata->flags & CI_HDRC_IMX_IS_HSIC) { + tmp = ehci_readl(ehci, reg); + tmp &= ~(PORT_WKDISC_E | PORT_WKCONN_E); + ehci_writel(ehci, tmp, reg); + } + break; } } -- cgit From 7c8e8909417eb6342ac487dc5ab3076d46718f71 Mon Sep 17 00:00:00 2001 From: Peter Chen Date: Tue, 16 Oct 2018 09:17:02 +0800 Subject: usb: chipidea: imx: add HSIC support To support imx HSIC, there are some special requirement: - The HSIC pad is 1.2v, it may need to supply from external - The data/strobe pin needs to be pulled down first, and after host mode is initialized, the strobe pin needs to be pulled up - During the USB suspend/resume, special setting is needed Reviewed-by: Frieder Schrempf Tested-by: Frieder Schrempf Signed-off-by: Peter Chen --- drivers/usb/chipidea/ci_hdrc_imx.c | 140 ++++++++++++++++++++++++++++++++----- drivers/usb/chipidea/ci_hdrc_imx.h | 9 ++- drivers/usb/chipidea/usbmisc_imx.c | 140 +++++++++++++++++++++++++++++++++++++ 3 files changed, 270 insertions(+), 19 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/chipidea/ci_hdrc_imx.c b/drivers/usb/chipidea/ci_hdrc_imx.c index 09b37c0d075d..56781c329db0 100644 --- a/drivers/usb/chipidea/ci_hdrc_imx.c +++ b/drivers/usb/chipidea/ci_hdrc_imx.c @@ -14,6 +14,7 @@ #include #include #include +#include #include "ci.h" #include "ci_hdrc_imx.h" @@ -85,6 +86,9 @@ struct ci_hdrc_imx_data { bool supports_runtime_pm; bool override_phy_control; bool in_lpm; + struct pinctrl *pinctrl; + struct pinctrl_state *pinctrl_hsic_active; + struct regulator *hsic_pad_regulator; /* SoC before i.mx6 (except imx23/imx28) needs three clks */ bool need_three_clks; struct clk *clk_ipg; @@ -245,19 +249,49 @@ static void imx_disable_unprepare_clks(struct device *dev) } } +static int ci_hdrc_imx_notify_event(struct ci_hdrc *ci, unsigned int event) +{ + struct device *dev = ci->dev->parent; + struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); + int ret = 0; + + switch (event) { + case CI_HDRC_IMX_HSIC_ACTIVE_EVENT: + ret = pinctrl_select_state(data->pinctrl, + data->pinctrl_hsic_active); + if (ret) + dev_err(dev, "hsic_active select failed, err=%d\n", + ret); + break; + case CI_HDRC_IMX_HSIC_SUSPEND_EVENT: + ret = imx_usbmisc_hsic_set_connect(data->usbmisc_data); + if (ret) + dev_err(dev, + "hsic_set_connect failed, err=%d\n", ret); + break; + default: + break; + } + + return ret; +} + static int ci_hdrc_imx_probe(struct platform_device *pdev) { struct ci_hdrc_imx_data *data; struct ci_hdrc_platform_data pdata = { .name = dev_name(&pdev->dev), .capoffset = DEF_CAPOFFSET, + .notify_event = ci_hdrc_imx_notify_event, }; int ret; const struct of_device_id *of_id; const struct ci_hdrc_imx_platform_flag *imx_platform_flag; struct device_node *np = pdev->dev.of_node; + struct device *dev = &pdev->dev; + struct pinctrl_state *pinctrl_hsic_idle; - of_id = of_match_device(ci_hdrc_imx_dt_ids, &pdev->dev); + of_id = of_match_device(ci_hdrc_imx_dt_ids, dev); if (!of_id) return -ENODEV; @@ -268,19 +302,73 @@ static int ci_hdrc_imx_probe(struct platform_device *pdev) return -ENOMEM; platform_set_drvdata(pdev, data); - data->usbmisc_data = usbmisc_get_init_data(&pdev->dev); + data->usbmisc_data = usbmisc_get_init_data(dev); if (IS_ERR(data->usbmisc_data)) return PTR_ERR(data->usbmisc_data); - ret = imx_get_clks(&pdev->dev); + if (of_usb_get_phy_mode(dev->of_node) == USBPHY_INTERFACE_MODE_HSIC) { + pdata.flags |= CI_HDRC_IMX_IS_HSIC; + data->usbmisc_data->hsic = 1; + data->pinctrl = devm_pinctrl_get(dev); + if (IS_ERR(data->pinctrl)) { + dev_err(dev, "pinctrl get failed, err=%ld\n", + PTR_ERR(data->pinctrl)); + return PTR_ERR(data->pinctrl); + } + + pinctrl_hsic_idle = pinctrl_lookup_state(data->pinctrl, "idle"); + if (IS_ERR(pinctrl_hsic_idle)) { + dev_err(dev, + "pinctrl_hsic_idle lookup failed, err=%ld\n", + PTR_ERR(pinctrl_hsic_idle)); + return PTR_ERR(pinctrl_hsic_idle); + } + + ret = pinctrl_select_state(data->pinctrl, pinctrl_hsic_idle); + if (ret) { + dev_err(dev, "hsic_idle select failed, err=%d\n", ret); + return ret; + } + + data->pinctrl_hsic_active = pinctrl_lookup_state(data->pinctrl, + "active"); + if (IS_ERR(data->pinctrl_hsic_active)) { + dev_err(dev, + "pinctrl_hsic_active lookup failed, err=%ld\n", + PTR_ERR(data->pinctrl_hsic_active)); + return PTR_ERR(data->pinctrl_hsic_active); + } + + data->hsic_pad_regulator = devm_regulator_get(dev, "hsic"); + if (PTR_ERR(data->hsic_pad_regulator) == -EPROBE_DEFER) { + return -EPROBE_DEFER; + } else if (PTR_ERR(data->hsic_pad_regulator) == -ENODEV) { + /* no pad regualator is needed */ + data->hsic_pad_regulator = NULL; + } else if (IS_ERR(data->hsic_pad_regulator)) { + dev_err(dev, "Get HSIC pad regulator error: %ld\n", + PTR_ERR(data->hsic_pad_regulator)); + return PTR_ERR(data->hsic_pad_regulator); + } + + if (data->hsic_pad_regulator) { + ret = regulator_enable(data->hsic_pad_regulator); + if (ret) { + dev_err(dev, + "Failed to enable HSIC pad regulator\n"); + return ret; + } + } + } + ret = imx_get_clks(dev); if (ret) - return ret; + goto disable_hsic_regulator; - ret = imx_prepare_enable_clks(&pdev->dev); + ret = imx_prepare_enable_clks(dev); if (ret) - return ret; + goto disable_hsic_regulator; - data->phy = devm_usb_get_phy_by_phandle(&pdev->dev, "fsl,usbphy", 0); + data->phy = devm_usb_get_phy_by_phandle(dev, "fsl,usbphy", 0); if (IS_ERR(data->phy)) { ret = PTR_ERR(data->phy); /* Return -EINVAL if no usbphy is available */ @@ -305,40 +393,43 @@ static int ci_hdrc_imx_probe(struct platform_device *pdev) ret = imx_usbmisc_init(data->usbmisc_data); if (ret) { - dev_err(&pdev->dev, "usbmisc init failed, ret=%d\n", ret); + dev_err(dev, "usbmisc init failed, ret=%d\n", ret); goto err_clk; } - data->ci_pdev = ci_hdrc_add_device(&pdev->dev, + data->ci_pdev = ci_hdrc_add_device(dev, pdev->resource, pdev->num_resources, &pdata); if (IS_ERR(data->ci_pdev)) { ret = PTR_ERR(data->ci_pdev); if (ret != -EPROBE_DEFER) - dev_err(&pdev->dev, - "ci_hdrc_add_device failed, err=%d\n", ret); + dev_err(dev, "ci_hdrc_add_device failed, err=%d\n", + ret); goto err_clk; } ret = imx_usbmisc_init_post(data->usbmisc_data); if (ret) { - dev_err(&pdev->dev, "usbmisc post failed, ret=%d\n", ret); + dev_err(dev, "usbmisc post failed, ret=%d\n", ret); goto disable_device; } if (data->supports_runtime_pm) { - pm_runtime_set_active(&pdev->dev); - pm_runtime_enable(&pdev->dev); + pm_runtime_set_active(dev); + pm_runtime_enable(dev); } - device_set_wakeup_capable(&pdev->dev, true); + device_set_wakeup_capable(dev, true); return 0; disable_device: ci_hdrc_remove_device(data->ci_pdev); err_clk: - imx_disable_unprepare_clks(&pdev->dev); + imx_disable_unprepare_clks(dev); +disable_hsic_regulator: + if (data->hsic_pad_regulator) + ret = regulator_disable(data->hsic_pad_regulator); return ret; } @@ -355,6 +446,8 @@ static int ci_hdrc_imx_remove(struct platform_device *pdev) if (data->override_phy_control) usb_phy_shutdown(data->phy); imx_disable_unprepare_clks(&pdev->dev); + if (data->hsic_pad_regulator) + regulator_disable(data->hsic_pad_regulator); return 0; } @@ -367,9 +460,16 @@ static void ci_hdrc_imx_shutdown(struct platform_device *pdev) static int __maybe_unused imx_controller_suspend(struct device *dev) { struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); + int ret = 0; dev_dbg(dev, "at %s\n", __func__); + ret = imx_usbmisc_hsic_set_clk(data->usbmisc_data, false); + if (ret) { + dev_err(dev, "usbmisc hsic_set_clk failed, ret=%d\n", ret); + return ret; + } + imx_disable_unprepare_clks(dev); data->in_lpm = true; @@ -400,8 +500,16 @@ static int __maybe_unused imx_controller_resume(struct device *dev) goto clk_disable; } + ret = imx_usbmisc_hsic_set_clk(data->usbmisc_data, true); + if (ret) { + dev_err(dev, "usbmisc hsic_set_clk failed, ret=%d\n", ret); + goto hsic_set_clk_fail; + } + return 0; +hsic_set_clk_fail: + imx_usbmisc_set_wakeup(data->usbmisc_data, true); clk_disable: imx_disable_unprepare_clks(dev); return ret; diff --git a/drivers/usb/chipidea/ci_hdrc_imx.h b/drivers/usb/chipidea/ci_hdrc_imx.h index 204275f47573..fcecab478934 100644 --- a/drivers/usb/chipidea/ci_hdrc_imx.h +++ b/drivers/usb/chipidea/ci_hdrc_imx.h @@ -14,10 +14,13 @@ struct imx_usbmisc_data { unsigned int oc_polarity:1; /* over current polarity if oc enabled */ unsigned int evdo:1; /* set external vbus divider option */ unsigned int ulpi:1; /* connected to an ULPI phy */ + unsigned int hsic:1; /* HSIC controlller */ }; -int imx_usbmisc_init(struct imx_usbmisc_data *); -int imx_usbmisc_init_post(struct imx_usbmisc_data *); -int imx_usbmisc_set_wakeup(struct imx_usbmisc_data *, bool); +int imx_usbmisc_init(struct imx_usbmisc_data *data); +int imx_usbmisc_init_post(struct imx_usbmisc_data *data); +int imx_usbmisc_set_wakeup(struct imx_usbmisc_data *data, bool enabled); +int imx_usbmisc_hsic_set_connect(struct imx_usbmisc_data *data); +int imx_usbmisc_hsic_set_clk(struct imx_usbmisc_data *data, bool on); #endif /* __DRIVER_USB_CHIPIDEA_CI_HDRC_IMX_H */ diff --git a/drivers/usb/chipidea/usbmisc_imx.c b/drivers/usb/chipidea/usbmisc_imx.c index def80ff547e4..43a15a6e86f5 100644 --- a/drivers/usb/chipidea/usbmisc_imx.c +++ b/drivers/usb/chipidea/usbmisc_imx.c @@ -64,10 +64,22 @@ #define MX6_BM_OVER_CUR_DIS BIT(7) #define MX6_BM_OVER_CUR_POLARITY BIT(8) #define MX6_BM_WAKEUP_ENABLE BIT(10) +#define MX6_BM_UTMI_ON_CLOCK BIT(13) #define MX6_BM_ID_WAKEUP BIT(16) #define MX6_BM_VBUS_WAKEUP BIT(17) #define MX6SX_BM_DPDM_WAKEUP_EN BIT(29) #define MX6_BM_WAKEUP_INTR BIT(31) + +#define MX6_USB_HSIC_CTRL_OFFSET 0x10 +/* Send resume signal without 480Mhz PHY clock */ +#define MX6SX_BM_HSIC_AUTO_RESUME BIT(23) +/* set before portsc.suspendM = 1 */ +#define MX6_BM_HSIC_DEV_CONN BIT(21) +/* HSIC enable */ +#define MX6_BM_HSIC_EN BIT(12) +/* Force HSIC module 480M clock on, even when in Host is in suspend mode */ +#define MX6_BM_HSIC_CLK_ON BIT(11) + #define MX6_USB_OTG1_PHY_CTRL 0x18 /* For imx6dql, it is host-only controller, for later imx6, it is otg's */ #define MX6_USB_OTG2_PHY_CTRL 0x1c @@ -94,6 +106,10 @@ struct usbmisc_ops { int (*post)(struct imx_usbmisc_data *data); /* It's called when we need to enable/disable usb wakeup */ int (*set_wakeup)(struct imx_usbmisc_data *data, bool enabled); + /* It's called before setting portsc.suspendM */ + int (*hsic_set_connect)(struct imx_usbmisc_data *data); + /* It's called during suspend/resume */ + int (*hsic_set_clk)(struct imx_usbmisc_data *data, bool enabled); }; struct imx_usbmisc { @@ -353,6 +369,18 @@ static int usbmisc_imx6q_init(struct imx_usbmisc_data *data) writel(reg | MX6_BM_NON_BURST_SETTING, usbmisc->base + data->index * 4); + /* For HSIC controller */ + if (data->hsic) { + reg = readl(usbmisc->base + data->index * 4); + writel(reg | MX6_BM_UTMI_ON_CLOCK, + usbmisc->base + data->index * 4); + reg = readl(usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET + + (data->index - 2) * 4); + reg |= MX6_BM_HSIC_EN | MX6_BM_HSIC_CLK_ON; + writel(reg, usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET + + (data->index - 2) * 4); + } + spin_unlock_irqrestore(&usbmisc->lock, flags); usbmisc_imx6q_set_wakeup(data, false); @@ -360,6 +388,79 @@ static int usbmisc_imx6q_init(struct imx_usbmisc_data *data) return 0; } +static int usbmisc_imx6_hsic_get_reg_offset(struct imx_usbmisc_data *data) +{ + int offset, ret = 0; + + if (data->index == 2 || data->index == 3) { + offset = (data->index - 2) * 4; + } else if (data->index == 0) { + /* + * For SoCs like i.MX7D and later, each USB controller has + * its own non-core register region. For SoCs before i.MX7D, + * the first two USB controllers are non-HSIC controllers. + */ + offset = 0; + } else { + dev_err(data->dev, "index is error for usbmisc\n"); + ret = -EINVAL; + } + + return ret ? ret : offset; +} + +static int usbmisc_imx6_hsic_set_connect(struct imx_usbmisc_data *data) +{ + unsigned long flags; + u32 val; + struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev); + int offset; + + spin_lock_irqsave(&usbmisc->lock, flags); + offset = usbmisc_imx6_hsic_get_reg_offset(data); + if (offset < 0) { + spin_unlock_irqrestore(&usbmisc->lock, flags); + return offset; + } + + val = readl(usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET + offset); + if (!(val & MX6_BM_HSIC_DEV_CONN)) + writel(val | MX6_BM_HSIC_DEV_CONN, + usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET + offset); + + spin_unlock_irqrestore(&usbmisc->lock, flags); + + return 0; +} + +static int usbmisc_imx6_hsic_set_clk(struct imx_usbmisc_data *data, bool on) +{ + unsigned long flags; + u32 val; + struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev); + int offset; + + spin_lock_irqsave(&usbmisc->lock, flags); + offset = usbmisc_imx6_hsic_get_reg_offset(data); + if (offset < 0) { + spin_unlock_irqrestore(&usbmisc->lock, flags); + return offset; + } + + val = readl(usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET + offset); + val |= MX6_BM_HSIC_EN | MX6_BM_HSIC_CLK_ON; + if (on) + val |= MX6_BM_HSIC_CLK_ON; + else + val &= ~MX6_BM_HSIC_CLK_ON; + + writel(val, usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET + offset); + spin_unlock_irqrestore(&usbmisc->lock, flags); + + return 0; +} + + static int usbmisc_imx6sx_init(struct imx_usbmisc_data *data) { void __iomem *reg = NULL; @@ -385,6 +486,13 @@ static int usbmisc_imx6sx_init(struct imx_usbmisc_data *data) spin_unlock_irqrestore(&usbmisc->lock, flags); } + /* For HSIC controller */ + if (data->hsic) { + val = readl(usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET); + val |= MX6SX_BM_HSIC_AUTO_RESUME; + writel(val, usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET); + } + return 0; } @@ -454,6 +562,7 @@ static int usbmisc_imx7d_init(struct imx_usbmisc_data *data) reg &= ~MX7D_USB_VBUS_WAKEUP_SOURCE_MASK; writel(reg | MX7D_USB_VBUS_WAKEUP_SOURCE_BVALID, usbmisc->base + MX7D_USBNC_USB_CTRL2); + spin_unlock_irqrestore(&usbmisc->lock, flags); usbmisc_imx7d_set_wakeup(data, false); @@ -481,6 +590,8 @@ static const struct usbmisc_ops imx53_usbmisc_ops = { static const struct usbmisc_ops imx6q_usbmisc_ops = { .set_wakeup = usbmisc_imx6q_set_wakeup, .init = usbmisc_imx6q_init, + .hsic_set_connect = usbmisc_imx6_hsic_set_connect, + .hsic_set_clk = usbmisc_imx6_hsic_set_clk, }; static const struct usbmisc_ops vf610_usbmisc_ops = { @@ -490,6 +601,8 @@ static const struct usbmisc_ops vf610_usbmisc_ops = { static const struct usbmisc_ops imx6sx_usbmisc_ops = { .set_wakeup = usbmisc_imx6q_set_wakeup, .init = usbmisc_imx6sx_init, + .hsic_set_connect = usbmisc_imx6_hsic_set_connect, + .hsic_set_clk = usbmisc_imx6_hsic_set_clk, }; static const struct usbmisc_ops imx7d_usbmisc_ops = { @@ -546,6 +659,33 @@ int imx_usbmisc_set_wakeup(struct imx_usbmisc_data *data, bool enabled) } EXPORT_SYMBOL_GPL(imx_usbmisc_set_wakeup); +int imx_usbmisc_hsic_set_connect(struct imx_usbmisc_data *data) +{ + struct imx_usbmisc *usbmisc; + + if (!data) + return 0; + + usbmisc = dev_get_drvdata(data->dev); + if (!usbmisc->ops->hsic_set_connect || !data->hsic) + return 0; + return usbmisc->ops->hsic_set_connect(data); +} +EXPORT_SYMBOL_GPL(imx_usbmisc_hsic_set_connect); + +int imx_usbmisc_hsic_set_clk(struct imx_usbmisc_data *data, bool on) +{ + struct imx_usbmisc *usbmisc; + + if (!data) + return 0; + + usbmisc = dev_get_drvdata(data->dev); + if (!usbmisc->ops->hsic_set_clk || !data->hsic) + return 0; + return usbmisc->ops->hsic_set_clk(data, on); +} +EXPORT_SYMBOL_GPL(imx_usbmisc_hsic_set_clk); static const struct of_device_id usbmisc_imx_dt_ids[] = { { .compatible = "fsl,imx25-usbmisc", -- cgit From 2c4593ecc920b6f3c148f2d123a5c6aa2f1f3e73 Mon Sep 17 00:00:00 2001 From: Peter Chen Date: Tue, 16 Oct 2018 10:11:42 +0800 Subject: usb: chipidea: host: override ehci->hub_control The chipidea controller has some special requirements during suspend/resume, override common ehci->hub_control to implement it. Reviewed-by: Frieder Schrempf Tested-by: Frieder Schrempf Signed-off-by: Peter Chen --- drivers/usb/chipidea/host.c | 75 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 75 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/chipidea/host.c b/drivers/usb/chipidea/host.c index 028a3574266a..b45ceb91c735 100644 --- a/drivers/usb/chipidea/host.c +++ b/drivers/usb/chipidea/host.c @@ -220,6 +220,80 @@ void ci_hdrc_host_destroy(struct ci_hdrc *ci) host_stop(ci); } +/* The below code is based on tegra ehci driver */ +static int ci_ehci_hub_control( + struct usb_hcd *hcd, + u16 typeReq, + u16 wValue, + u16 wIndex, + char *buf, + u16 wLength +) +{ + struct ehci_hcd *ehci = hcd_to_ehci(hcd); + u32 __iomem *status_reg; + u32 temp; + unsigned long flags; + int retval = 0; + struct device *dev = hcd->self.controller; + struct ci_hdrc *ci = dev_get_drvdata(dev); + + status_reg = &ehci->regs->port_status[(wIndex & 0xff) - 1]; + + spin_lock_irqsave(&ehci->lock, flags); + + if (typeReq == SetPortFeature && wValue == USB_PORT_FEAT_SUSPEND) { + temp = ehci_readl(ehci, status_reg); + if ((temp & PORT_PE) == 0 || (temp & PORT_RESET) != 0) { + retval = -EPIPE; + goto done; + } + + temp &= ~(PORT_RWC_BITS | PORT_WKCONN_E); + temp |= PORT_WKDISC_E | PORT_WKOC_E; + ehci_writel(ehci, temp | PORT_SUSPEND, status_reg); + + /* + * If a transaction is in progress, there may be a delay in + * suspending the port. Poll until the port is suspended. + */ + if (ehci_handshake(ehci, status_reg, PORT_SUSPEND, + PORT_SUSPEND, 5000)) + ehci_err(ehci, "timeout waiting for SUSPEND\n"); + + if (ci->platdata->flags & CI_HDRC_IMX_IS_HSIC) { + if (ci->platdata->notify_event) + ci->platdata->notify_event(ci, + CI_HDRC_IMX_HSIC_SUSPEND_EVENT); + + temp = ehci_readl(ehci, status_reg); + temp &= ~(PORT_WKDISC_E | PORT_WKCONN_E); + ehci_writel(ehci, temp, status_reg); + } + + set_bit((wIndex & 0xff) - 1, &ehci->suspended_ports); + goto done; + } + + /* + * After resume has finished, it needs do some post resume + * operation for some SoCs. + */ + else if (typeReq == ClearPortFeature && + wValue == USB_PORT_FEAT_C_SUSPEND) { + /* Make sure the resume has finished, it should be finished */ + if (ehci_handshake(ehci, status_reg, PORT_RESUME, 0, 25000)) + ehci_err(ehci, "timeout waiting for resume\n"); + } + + spin_unlock_irqrestore(&ehci->lock, flags); + + /* Handle the hub control events here */ + return ehci_hub_control(hcd, typeReq, wValue, wIndex, buf, wLength); +done: + spin_unlock_irqrestore(&ehci->lock, flags); + return retval; +} static int ci_ehci_bus_suspend(struct usb_hcd *hcd) { struct ehci_hcd *ehci = hcd_to_ehci(hcd); @@ -298,4 +372,5 @@ void ci_hdrc_host_driver_init(void) ehci_init_driver(&ci_ehci_hc_driver, &ehci_ci_overrides); orig_bus_suspend = ci_ehci_hc_driver.bus_suspend; ci_ehci_hc_driver.bus_suspend = ci_ehci_bus_suspend; + ci_ehci_hc_driver.hub_control = ci_ehci_hub_control; } -- cgit From a82bf696aa39b08c0dfce5569525e61368c6827f Mon Sep 17 00:00:00 2001 From: Uwe Kleine-König Date: Tue, 4 Dec 2018 09:31:29 +0100 Subject: usb: chipidea: imx: support configuring for active low oc signal MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The status quo on i.MX6 is that if "over-current-active-high" is specified in the device tree this is configured as expected. If the property is missing polarity isn't changed and so the polarity is kept as setup by the bootloader. Reset default is active high, so active low can only be used with help by the bootloader. On i.MX7 it is similar, but there disabling of over current detection has a similar inconsistency. This patch introduces a new property that allows to explicitly configure for active low over current detection and consistently sets this up. In the absence of an explicit configuration the bit is kept as is. On i.MX7 over current detection is used unless disabled in the device tree. Signed-off-by: Uwe Kleine-König Signed-off-by: Peter Chen --- drivers/usb/chipidea/ci_hdrc_imx.c | 16 ++++++++++++---- drivers/usb/chipidea/ci_hdrc_imx.h | 8 +++++++- drivers/usb/chipidea/usbmisc_imx.c | 28 +++++++++++++++++++++------- 3 files changed, 40 insertions(+), 12 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/chipidea/ci_hdrc_imx.c b/drivers/usb/chipidea/ci_hdrc_imx.c index 56781c329db0..1951b37aa39d 100644 --- a/drivers/usb/chipidea/ci_hdrc_imx.c +++ b/drivers/usb/chipidea/ci_hdrc_imx.c @@ -136,11 +136,19 @@ static struct imx_usbmisc_data *usbmisc_get_init_data(struct device *dev) data->dev = &misc_pdev->dev; - if (of_find_property(np, "disable-over-current", NULL)) + /* + * Check the various over current related properties. If over current + * detection is disabled we're not interested in the polarity. + */ + if (of_find_property(np, "disable-over-current", NULL)) { data->disable_oc = 1; - - if (of_find_property(np, "over-current-active-high", NULL)) - data->oc_polarity = 1; + } else if (of_find_property(np, "over-current-active-high", NULL)) { + data->oc_pol_active_low = 0; + data->oc_pol_configured = 1; + } else if (of_find_property(np, "over-current-active-low", NULL)) { + data->oc_pol_active_low = 1; + data->oc_pol_configured = 1; + } if (of_find_property(np, "external-vbus-divider", NULL)) data->evdo = 1; diff --git a/drivers/usb/chipidea/ci_hdrc_imx.h b/drivers/usb/chipidea/ci_hdrc_imx.h index fcecab478934..7cc53e2ce564 100644 --- a/drivers/usb/chipidea/ci_hdrc_imx.h +++ b/drivers/usb/chipidea/ci_hdrc_imx.h @@ -11,7 +11,13 @@ struct imx_usbmisc_data { int index; unsigned int disable_oc:1; /* over current detect disabled */ - unsigned int oc_polarity:1; /* over current polarity if oc enabled */ + + /* true if over-current polarity is active low */ + unsigned int oc_pol_active_low:1; + + /* true if dt specifies polarity */ + unsigned int oc_pol_configured:1; + unsigned int evdo:1; /* set external vbus divider option */ unsigned int ulpi:1; /* connected to an ULPI phy */ unsigned int hsic:1; /* HSIC controlller */ diff --git a/drivers/usb/chipidea/usbmisc_imx.c b/drivers/usb/chipidea/usbmisc_imx.c index 43a15a6e86f5..4c3839d345cd 100644 --- a/drivers/usb/chipidea/usbmisc_imx.c +++ b/drivers/usb/chipidea/usbmisc_imx.c @@ -356,11 +356,17 @@ static int usbmisc_imx6q_init(struct imx_usbmisc_data *data) reg = readl(usbmisc->base + data->index * 4); if (data->disable_oc) { reg |= MX6_BM_OVER_CUR_DIS; - } else if (data->oc_polarity == 1) { - /* High active */ - reg &= ~(MX6_BM_OVER_CUR_DIS | MX6_BM_OVER_CUR_POLARITY); } else { - reg &= ~(MX6_BM_OVER_CUR_DIS); + reg &= ~MX6_BM_OVER_CUR_DIS; + + /* + * If the polarity is not configured keep it as setup by the + * bootloader. + */ + if (data->oc_pol_configured && data->oc_pol_active_low) + reg |= MX6_BM_OVER_CUR_POLARITY; + else if (data->oc_pol_configured) + reg &= ~MX6_BM_OVER_CUR_POLARITY; } writel(reg, usbmisc->base + data->index * 4); @@ -552,9 +558,17 @@ static int usbmisc_imx7d_init(struct imx_usbmisc_data *data) reg = readl(usbmisc->base); if (data->disable_oc) { reg |= MX6_BM_OVER_CUR_DIS; - } else if (data->oc_polarity == 1) { - /* High active */ - reg &= ~(MX6_BM_OVER_CUR_DIS | MX6_BM_OVER_CUR_POLARITY); + } else { + reg &= ~MX6_BM_OVER_CUR_DIS; + + /* + * If the polarity is not configured keep it as setup by the + * bootloader. + */ + if (data->oc_pol_configured && data->oc_pol_active_low) + reg |= MX6_BM_OVER_CUR_POLARITY; + else if (data->oc_pol_configured) + reg &= ~MX6_BM_OVER_CUR_POLARITY; } writel(reg, usbmisc->base); -- cgit From 1bf4743f641d85f32fe3f3a4d8aa01a387549e3e Mon Sep 17 00:00:00 2001 From: Uwe Kleine-König Date: Tue, 4 Dec 2018 09:31:30 +0100 Subject: usb: chipidea: imx: Warn if oc polarity isn't specified MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The polarity of the over current detection pin isn't configured on i.MX6/7 if it's unspecified in the device tree. So the actual configuration depends on bootloader behavior which is bad. So encourage users to fix their device tree by issuing a warning in this case. Signed-off-by: Uwe Kleine-König Signed-off-by: Peter Chen --- drivers/usb/chipidea/ci_hdrc_imx.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/chipidea/ci_hdrc_imx.c b/drivers/usb/chipidea/ci_hdrc_imx.c index 1951b37aa39d..e81de9ca8729 100644 --- a/drivers/usb/chipidea/ci_hdrc_imx.c +++ b/drivers/usb/chipidea/ci_hdrc_imx.c @@ -148,6 +148,8 @@ static struct imx_usbmisc_data *usbmisc_get_init_data(struct device *dev) } else if (of_find_property(np, "over-current-active-low", NULL)) { data->oc_pol_active_low = 1; data->oc_pol_configured = 1; + } else { + dev_warn(dev, "No over current polarity defined\n"); } if (of_find_property(np, "external-vbus-divider", NULL)) -- cgit From 9049fce897edae50835a8f799d4b05f67a538e9a Mon Sep 17 00:00:00 2001 From: Uwe Kleine-König Date: Tue, 4 Dec 2018 09:31:31 +0100 Subject: usb: chipidea: imx: allow to configure oc polarity on i.MX25 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Up to now the polarity of the over current pin was hard coded to active high. Use the already defined device tree properties to configure polarity on i.MX25, too. In difference to i.MX6/7 use active high behavior if the polarity is unspecified to keep compatibility to existing device trees. Signed-off-by: Uwe Kleine-König Signed-off-by: Peter Chen --- drivers/usb/chipidea/usbmisc_imx.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/chipidea/usbmisc_imx.c b/drivers/usb/chipidea/usbmisc_imx.c index 4c3839d345cd..097ffbca0bd9 100644 --- a/drivers/usb/chipidea/usbmisc_imx.c +++ b/drivers/usb/chipidea/usbmisc_imx.c @@ -136,6 +136,14 @@ static int usbmisc_imx25_init(struct imx_usbmisc_data *data) val &= ~(MX25_OTG_SIC_MASK | MX25_OTG_PP_BIT); val |= (MX25_EHCI_INTERFACE_DIFF_UNI & MX25_EHCI_INTERFACE_MASK) << MX25_OTG_SIC_SHIFT; val |= (MX25_OTG_PM_BIT | MX25_OTG_OCPOL_BIT); + + /* + * If the polarity is not configured assume active high for + * historical reasons. + */ + if (data->oc_pol_configured && data->oc_pol_active_low) + val &= ~MX25_OTG_OCPOL_BIT; + writel(val, usbmisc->base); break; case 1: @@ -145,6 +153,13 @@ static int usbmisc_imx25_init(struct imx_usbmisc_data *data) val |= (MX25_H1_PM_BIT | MX25_H1_OCPOL_BIT | MX25_H1_TLL_BIT | MX25_H1_USBTE_BIT | MX25_H1_IPPUE_DOWN_BIT); + /* + * If the polarity is not configured assume active high for + * historical reasons. + */ + if (data->oc_pol_configured && data->oc_pol_active_low) + val &= ~MX25_H1_OCPOL_BIT; + writel(val, usbmisc->base); break; -- cgit From 4fe4f9fecc36956fd53c8edf96dd0c691ef98ff9 Mon Sep 17 00:00:00 2001 From: Minas Harutyunyan Date: Mon, 10 Dec 2018 18:09:32 +0400 Subject: usb: dwc2: Fix disable all EP's on disconnect MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Disabling all EP's allow to reset EP's to initial state. Introduced new function dwc2_hsotg_ep_disable_lock() which before calling dwc2_hsotg_ep_disable() function acquire hsotg->lock and release on exiting. From dwc2_hsotg_ep_disable() function removed acquiring hsotg->lock. In dwc2_hsotg_core_init_disconnected() function when USB reset interrupt asserted disabling all ep’s by dwc2_hsotg_ep_disable() function. This updates eliminating sparse imbalance warnings. Reverted changes in dwc2_hostg_disconnect() function. Introduced new function dwc2_hsotg_ep_disable_lock(). Changed dwc2_hsotg_ep_ops. Now disable point to dwc2_hsotg_ep_disable_lock() function. In functions dwc2_hsotg_udc_stop() and dwc2_hsotg_suspend() dwc2_hsotg_ep_disable() function replaced by dwc2_hsotg_ep_disable_lock() function. In dwc2_hsotg_ep_disable() function removed acquiring of hsotg->lock. Fixes: dccf1bad4be7 ("usb: dwc2: Disable all EP's on disconnect") Signed-off-by: Minas Harutyunyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/gadget.c | 41 +++++++++++++++++++++++------------------ 1 file changed, 23 insertions(+), 18 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index 94f3ba995580..68ad75a7460d 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -3165,8 +3165,6 @@ static void kill_all_requests(struct dwc2_hsotg *hsotg, dwc2_hsotg_txfifo_flush(hsotg, ep->fifo_index); } -static int dwc2_hsotg_ep_disable(struct usb_ep *ep); - /** * dwc2_hsotg_disconnect - disconnect service * @hsotg: The device state. @@ -3188,9 +3186,11 @@ void dwc2_hsotg_disconnect(struct dwc2_hsotg *hsotg) /* all endpoints should be shutdown */ for (ep = 0; ep < hsotg->num_of_eps; ep++) { if (hsotg->eps_in[ep]) - dwc2_hsotg_ep_disable(&hsotg->eps_in[ep]->ep); + kill_all_requests(hsotg, hsotg->eps_in[ep], + -ESHUTDOWN); if (hsotg->eps_out[ep]) - dwc2_hsotg_ep_disable(&hsotg->eps_out[ep]->ep); + kill_all_requests(hsotg, hsotg->eps_out[ep], + -ESHUTDOWN); } call_gadget(hsotg, disconnect); @@ -3234,6 +3234,7 @@ static void dwc2_hsotg_irq_fifoempty(struct dwc2_hsotg *hsotg, bool periodic) GINTSTS_PTXFEMP | \ GINTSTS_RXFLVL) +static int dwc2_hsotg_ep_disable(struct usb_ep *ep); /** * dwc2_hsotg_core_init - issue softreset to the core * @hsotg: The device state @@ -4069,10 +4070,8 @@ static int dwc2_hsotg_ep_disable(struct usb_ep *ep) struct dwc2_hsotg *hsotg = hs_ep->parent; int dir_in = hs_ep->dir_in; int index = hs_ep->index; - unsigned long flags; u32 epctrl_reg; u32 ctrl; - int locked; dev_dbg(hsotg->dev, "%s(ep %p)\n", __func__, ep); @@ -4088,10 +4087,6 @@ static int dwc2_hsotg_ep_disable(struct usb_ep *ep) epctrl_reg = dir_in ? DIEPCTL(index) : DOEPCTL(index); - locked = spin_is_locked(&hsotg->lock); - if (!locked) - spin_lock_irqsave(&hsotg->lock, flags); - ctrl = dwc2_readl(hsotg, epctrl_reg); if (ctrl & DXEPCTL_EPENA) @@ -4114,12 +4109,22 @@ static int dwc2_hsotg_ep_disable(struct usb_ep *ep) hs_ep->fifo_index = 0; hs_ep->fifo_size = 0; - if (!locked) - spin_unlock_irqrestore(&hsotg->lock, flags); - return 0; } +static int dwc2_hsotg_ep_disable_lock(struct usb_ep *ep) +{ + struct dwc2_hsotg_ep *hs_ep = our_ep(ep); + struct dwc2_hsotg *hsotg = hs_ep->parent; + unsigned long flags; + int ret; + + spin_lock_irqsave(&hsotg->lock, flags); + ret = dwc2_hsotg_ep_disable(ep); + spin_unlock_irqrestore(&hsotg->lock, flags); + return ret; +} + /** * on_list - check request is on the given endpoint * @ep: The endpoint to check. @@ -4267,7 +4272,7 @@ static int dwc2_hsotg_ep_sethalt_lock(struct usb_ep *ep, int value) static const struct usb_ep_ops dwc2_hsotg_ep_ops = { .enable = dwc2_hsotg_ep_enable, - .disable = dwc2_hsotg_ep_disable, + .disable = dwc2_hsotg_ep_disable_lock, .alloc_request = dwc2_hsotg_ep_alloc_request, .free_request = dwc2_hsotg_ep_free_request, .queue = dwc2_hsotg_ep_queue_lock, @@ -4407,9 +4412,9 @@ static int dwc2_hsotg_udc_stop(struct usb_gadget *gadget) /* all endpoints should be shutdown */ for (ep = 1; ep < hsotg->num_of_eps; ep++) { if (hsotg->eps_in[ep]) - dwc2_hsotg_ep_disable(&hsotg->eps_in[ep]->ep); + dwc2_hsotg_ep_disable_lock(&hsotg->eps_in[ep]->ep); if (hsotg->eps_out[ep]) - dwc2_hsotg_ep_disable(&hsotg->eps_out[ep]->ep); + dwc2_hsotg_ep_disable_lock(&hsotg->eps_out[ep]->ep); } spin_lock_irqsave(&hsotg->lock, flags); @@ -4857,9 +4862,9 @@ int dwc2_hsotg_suspend(struct dwc2_hsotg *hsotg) for (ep = 0; ep < hsotg->num_of_eps; ep++) { if (hsotg->eps_in[ep]) - dwc2_hsotg_ep_disable(&hsotg->eps_in[ep]->ep); + dwc2_hsotg_ep_disable_lock(&hsotg->eps_in[ep]->ep); if (hsotg->eps_out[ep]) - dwc2_hsotg_ep_disable(&hsotg->eps_out[ep]->ep); + dwc2_hsotg_ep_disable_lock(&hsotg->eps_out[ep]->ep); } } -- cgit From 9e412c66a8a24fabad97b706132ee270db2e4c8e Mon Sep 17 00:00:00 2001 From: Yangtao Li Date: Wed, 5 Dec 2018 11:33:39 -0500 Subject: usb: host: isp1362-hcd: convert to DEFINE_SHOW_ATTRIBUTE Use DEFINE_SHOW_ATTRIBUTE macro to simplify the code. Signed-off-by: Yangtao Li Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/isp1362-hcd.c | 16 +++------------- 1 file changed, 3 insertions(+), 13 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/host/isp1362-hcd.c b/drivers/usb/host/isp1362-hcd.c index b21c386e6a46..28bf8bfb091e 100644 --- a/drivers/usb/host/isp1362-hcd.c +++ b/drivers/usb/host/isp1362-hcd.c @@ -2159,25 +2159,15 @@ static int isp1362_show(struct seq_file *s, void *unused) return 0; } - -static int isp1362_open(struct inode *inode, struct file *file) -{ - return single_open(file, isp1362_show, inode); -} - -static const struct file_operations debug_ops = { - .open = isp1362_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; +DEFINE_SHOW_ATTRIBUTE(isp1362); /* expect just one isp1362_hcd per system */ static void create_debug_file(struct isp1362_hcd *isp1362_hcd) { isp1362_hcd->debug_file = debugfs_create_file("isp1362", S_IRUGO, usb_debug_root, - isp1362_hcd, &debug_ops); + isp1362_hcd, + &isp1362_fops); } static void remove_debug_file(struct isp1362_hcd *isp1362_hcd) -- cgit From c238ec3ef638f87d8d701600d13a185b011fa078 Mon Sep 17 00:00:00 2001 From: Suwan Kim Date: Tue, 4 Dec 2018 23:31:43 +0900 Subject: usb: core: Remove unnecessary memset() register_root_hub() calls memset() setting usb_dev->bus->devmap. devicemap to 0 during hcd probe function (usb_hcd_pci_probe). But in previous function which is also the procedure of usb_hcd_pci_probe(), usb_bus_init() already initialized bus->devmap calling memset(). Furthermore, register_root_hub() is called only once in kernel. So, calling memset() which resets usb_bus->devmap.devicemap in register_root_hub() is redundant. Signed-off-by: Suwan Kim Acked-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/hcd.c | 2 -- 1 file changed, 2 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index 487025d31d44..015b126ce455 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -1074,8 +1074,6 @@ static int register_root_hub(struct usb_hcd *hcd) usb_dev->devnum = devnum; usb_dev->bus->devnum_next = devnum + 1; - memset (&usb_dev->bus->devmap.devicemap, 0, - sizeof usb_dev->bus->devmap.devicemap); set_bit (devnum, usb_dev->bus->devmap.devicemap); usb_set_device_state(usb_dev, USB_STATE_ADDRESS); -- cgit From eaf3074e0a8c2a39c4c14aa8ef1c2ec09ace9c79 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Tue, 11 Dec 2018 11:06:25 +0100 Subject: usb: renesas_usbhs: mark PM functions as __maybe_unused Without CONFIG_PM, we get a new build warning here: drivers/usb/renesas_usbhs/common.c:860:12: error: 'usbhsc_resume' defined but not used [-Werror=unused-function] static int usbhsc_resume(struct device *dev) ^~~~~~~~~~~~~ drivers/usb/renesas_usbhs/common.c:844:12: error: 'usbhsc_suspend' defined but not used [-Werror=unused-function] static int usbhsc_suspend(struct device *dev) ^~~~~~~~~~~~~~ Fixes: d54d334e75b9 ("usb: renesas_usbhs: Use SIMPLE_DEV_PM_OPS macro") Signed-off-by: Arnd Bergmann Reviewed-by: Yoshihiro Shimoda Signed-off-by: Greg Kroah-Hartman --- drivers/usb/renesas_usbhs/common.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/renesas_usbhs/common.c b/drivers/usb/renesas_usbhs/common.c index 02c1d2bf4f86..2ff7991f4517 100644 --- a/drivers/usb/renesas_usbhs/common.c +++ b/drivers/usb/renesas_usbhs/common.c @@ -841,7 +841,7 @@ static int usbhs_remove(struct platform_device *pdev) return 0; } -static int usbhsc_suspend(struct device *dev) +static __maybe_unused int usbhsc_suspend(struct device *dev) { struct usbhs_priv *priv = dev_get_drvdata(dev); struct usbhs_mod *mod = usbhs_mod_get_current(priv); @@ -857,7 +857,7 @@ static int usbhsc_suspend(struct device *dev) return 0; } -static int usbhsc_resume(struct device *dev) +static __maybe_unused int usbhsc_resume(struct device *dev) { struct usbhs_priv *priv = dev_get_drvdata(dev); struct platform_device *pdev = usbhs_priv_to_pdev(priv); -- cgit From 3a37a9636cf3a1af2621a33f7eef8a2a3da81030 Mon Sep 17 00:00:00 2001 From: Petr Machata Date: Thu, 13 Dec 2018 11:54:30 +0000 Subject: net: dev: Add extack argument to dev_set_mac_address() A follow-up patch will add a notifier type NETDEV_PRE_CHANGEADDR, which allows vetoing of MAC address changes. One prominent path to that notification is through dev_set_mac_address(). Therefore give this function an extack argument, so that it can be packed together with the notification. Thus a textual reason for rejection (or a warning) can be communicated back to the user. Signed-off-by: Petr Machata Acked-by: Jiri Pirko Reviewed-by: Ido Schimmel Signed-off-by: David S. Miller --- drivers/usb/gadget/function/u_ether.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/function/u_ether.c b/drivers/usb/gadget/function/u_ether.c index 0f026d445e31..737bd77a575d 100644 --- a/drivers/usb/gadget/function/u_ether.c +++ b/drivers/usb/gadget/function/u_ether.c @@ -879,7 +879,7 @@ int gether_register_netdev(struct net_device *net) sa.sa_family = net->type; memcpy(sa.sa_data, dev->dev_mac, ETH_ALEN); rtnl_lock(); - status = dev_set_mac_address(net, &sa); + status = dev_set_mac_address(net, &sa, NULL); rtnl_unlock(); if (status) pr_warn("cannot set self ethernet address: %d\n", status); -- cgit From 05afde1a7ef3ddde5e7657b9faeb6347423a9acb Mon Sep 17 00:00:00 2001 From: Joerg Roedel Date: Fri, 30 Nov 2018 13:16:38 +0100 Subject: xhci: Use device_iommu_mapped() Replace the dev->iommu_group check with a proper function call that better reprensents its purpose. Cc: Mathias Nyman Acked-by: Robin Murphy Acked-by: Mathias Nyman Signed-off-by: Joerg Roedel --- drivers/usb/host/xhci.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index 0420eefa647a..6216e8254128 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -244,7 +244,7 @@ static void xhci_zero_64b_regs(struct xhci_hcd *xhci) * an iommu. Doing anything when there is no iommu is definitely * unsafe... */ - if (!(xhci->quirks & XHCI_ZERO_64B_REGS) || !dev->iommu_group) + if (!(xhci->quirks & XHCI_ZERO_64B_REGS) || !device_iommu_mapped(dev)) return; xhci_info(xhci, "Zeroing 64bit base registers, expecting fault\n"); -- cgit From c3788cd9963eb2e77de3c24142fb7c67b61f1a26 Mon Sep 17 00:00:00 2001 From: Heikki Krogerus Date: Wed, 12 Dec 2018 20:13:55 +0300 Subject: usb: roles: Add a description for the class to Kconfig That makes the USB role switch support option visible and selectable for the user. The class driver is also moved to drivers/usb/roles/ directory. This will fix an issue that we have with the Intel USB role switch driver on systems that don't have USB Type-C connectors: Intel USB role switch driver depends on the USB role switch class as it should, but since there was no way for the user to enable the USB role switch class, there was also no way to select that driver. USB Type-C drivers select the USB role switch class which makes the Intel USB role switch driver available and therefore hides the problem. So in practice Intel USB role switch driver was depending on USB Type-C drivers. Fixes: f6fb9ec02be1 ("usb: roles: Add Intel xHCI USB role switch driver") Cc: Signed-off-by: Heikki Krogerus Signed-off-by: Greg Kroah-Hartman --- drivers/usb/Kconfig | 4 - drivers/usb/common/Makefile | 1 - drivers/usb/common/roles.c | 314 -------------------------------------------- drivers/usb/roles/Kconfig | 13 ++ drivers/usb/roles/Makefile | 4 +- drivers/usb/roles/class.c | 314 ++++++++++++++++++++++++++++++++++++++++++++ 6 files changed, 330 insertions(+), 320 deletions(-) delete mode 100644 drivers/usb/common/roles.c create mode 100644 drivers/usb/roles/class.c (limited to 'drivers/usb') diff --git a/drivers/usb/Kconfig b/drivers/usb/Kconfig index 987fc5ba6321..70e6c956c23c 100644 --- a/drivers/usb/Kconfig +++ b/drivers/usb/Kconfig @@ -205,8 +205,4 @@ config USB_ULPI_BUS To compile this driver as a module, choose M here: the module will be called ulpi. -config USB_ROLE_SWITCH - tristate - select USB_COMMON - endif # USB_SUPPORT diff --git a/drivers/usb/common/Makefile b/drivers/usb/common/Makefile index fb4d5ef4165c..0a7c45e85481 100644 --- a/drivers/usb/common/Makefile +++ b/drivers/usb/common/Makefile @@ -9,4 +9,3 @@ usb-common-$(CONFIG_USB_LED_TRIG) += led.o obj-$(CONFIG_USB_OTG_FSM) += usb-otg-fsm.o obj-$(CONFIG_USB_ULPI_BUS) += ulpi.o -obj-$(CONFIG_USB_ROLE_SWITCH) += roles.o diff --git a/drivers/usb/common/roles.c b/drivers/usb/common/roles.c deleted file mode 100644 index 99116af07f1d..000000000000 --- a/drivers/usb/common/roles.c +++ /dev/null @@ -1,314 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * USB Role Switch Support - * - * Copyright (C) 2018 Intel Corporation - * Author: Heikki Krogerus - * Hans de Goede - */ - -#include -#include -#include -#include -#include - -static struct class *role_class; - -struct usb_role_switch { - struct device dev; - struct mutex lock; /* device lock*/ - enum usb_role role; - - /* From descriptor */ - struct device *usb2_port; - struct device *usb3_port; - struct device *udc; - usb_role_switch_set_t set; - usb_role_switch_get_t get; - bool allow_userspace_control; -}; - -#define to_role_switch(d) container_of(d, struct usb_role_switch, dev) - -/** - * usb_role_switch_set_role - Set USB role for a switch - * @sw: USB role switch - * @role: USB role to be switched to - * - * Set USB role @role for @sw. - */ -int usb_role_switch_set_role(struct usb_role_switch *sw, enum usb_role role) -{ - int ret; - - if (IS_ERR_OR_NULL(sw)) - return 0; - - mutex_lock(&sw->lock); - - ret = sw->set(sw->dev.parent, role); - if (!ret) - sw->role = role; - - mutex_unlock(&sw->lock); - - return ret; -} -EXPORT_SYMBOL_GPL(usb_role_switch_set_role); - -/** - * usb_role_switch_get_role - Get the USB role for a switch - * @sw: USB role switch - * - * Depending on the role-switch-driver this function returns either a cached - * value of the last set role, or reads back the actual value from the hardware. - */ -enum usb_role usb_role_switch_get_role(struct usb_role_switch *sw) -{ - enum usb_role role; - - if (IS_ERR_OR_NULL(sw)) - return USB_ROLE_NONE; - - mutex_lock(&sw->lock); - - if (sw->get) - role = sw->get(sw->dev.parent); - else - role = sw->role; - - mutex_unlock(&sw->lock); - - return role; -} -EXPORT_SYMBOL_GPL(usb_role_switch_get_role); - -static int __switch_match(struct device *dev, const void *name) -{ - return !strcmp((const char *)name, dev_name(dev)); -} - -static void *usb_role_switch_match(struct device_connection *con, int ep, - void *data) -{ - struct device *dev; - - dev = class_find_device(role_class, NULL, con->endpoint[ep], - __switch_match); - - return dev ? to_role_switch(dev) : ERR_PTR(-EPROBE_DEFER); -} - -/** - * usb_role_switch_get - Find USB role switch linked with the caller - * @dev: The caller device - * - * Finds and returns role switch linked with @dev. The reference count for the - * found switch is incremented. - */ -struct usb_role_switch *usb_role_switch_get(struct device *dev) -{ - struct usb_role_switch *sw; - - sw = device_connection_find_match(dev, "usb-role-switch", NULL, - usb_role_switch_match); - - if (!IS_ERR_OR_NULL(sw)) - WARN_ON(!try_module_get(sw->dev.parent->driver->owner)); - - return sw; -} -EXPORT_SYMBOL_GPL(usb_role_switch_get); - -/** - * usb_role_switch_put - Release handle to a switch - * @sw: USB Role Switch - * - * Decrement reference count for @sw. - */ -void usb_role_switch_put(struct usb_role_switch *sw) -{ - if (!IS_ERR_OR_NULL(sw)) { - put_device(&sw->dev); - module_put(sw->dev.parent->driver->owner); - } -} -EXPORT_SYMBOL_GPL(usb_role_switch_put); - -static umode_t -usb_role_switch_is_visible(struct kobject *kobj, struct attribute *attr, int n) -{ - struct device *dev = container_of(kobj, typeof(*dev), kobj); - struct usb_role_switch *sw = to_role_switch(dev); - - if (sw->allow_userspace_control) - return attr->mode; - - return 0; -} - -static const char * const usb_roles[] = { - [USB_ROLE_NONE] = "none", - [USB_ROLE_HOST] = "host", - [USB_ROLE_DEVICE] = "device", -}; - -static ssize_t -role_show(struct device *dev, struct device_attribute *attr, char *buf) -{ - struct usb_role_switch *sw = to_role_switch(dev); - enum usb_role role = usb_role_switch_get_role(sw); - - return sprintf(buf, "%s\n", usb_roles[role]); -} - -static ssize_t role_store(struct device *dev, struct device_attribute *attr, - const char *buf, size_t size) -{ - struct usb_role_switch *sw = to_role_switch(dev); - int ret; - - ret = sysfs_match_string(usb_roles, buf); - if (ret < 0) { - bool res; - - /* Extra check if the user wants to disable the switch */ - ret = kstrtobool(buf, &res); - if (ret || res) - return -EINVAL; - } - - ret = usb_role_switch_set_role(sw, ret); - if (ret) - return ret; - - return size; -} -static DEVICE_ATTR_RW(role); - -static struct attribute *usb_role_switch_attrs[] = { - &dev_attr_role.attr, - NULL, -}; - -static const struct attribute_group usb_role_switch_group = { - .is_visible = usb_role_switch_is_visible, - .attrs = usb_role_switch_attrs, -}; - -static const struct attribute_group *usb_role_switch_groups[] = { - &usb_role_switch_group, - NULL, -}; - -static int -usb_role_switch_uevent(struct device *dev, struct kobj_uevent_env *env) -{ - int ret; - - ret = add_uevent_var(env, "USB_ROLE_SWITCH=%s", dev_name(dev)); - if (ret) - dev_err(dev, "failed to add uevent USB_ROLE_SWITCH\n"); - - return ret; -} - -static void usb_role_switch_release(struct device *dev) -{ - struct usb_role_switch *sw = to_role_switch(dev); - - kfree(sw); -} - -static const struct device_type usb_role_dev_type = { - .name = "usb_role_switch", - .groups = usb_role_switch_groups, - .uevent = usb_role_switch_uevent, - .release = usb_role_switch_release, -}; - -/** - * usb_role_switch_register - Register USB Role Switch - * @parent: Parent device for the switch - * @desc: Description of the switch - * - * USB Role Switch is a device capable or choosing the role for USB connector. - * On platforms where the USB controller is dual-role capable, the controller - * driver will need to register the switch. On platforms where the USB host and - * USB device controllers behind the connector are separate, there will be a - * mux, and the driver for that mux will need to register the switch. - * - * Returns handle to a new role switch or ERR_PTR. The content of @desc is - * copied. - */ -struct usb_role_switch * -usb_role_switch_register(struct device *parent, - const struct usb_role_switch_desc *desc) -{ - struct usb_role_switch *sw; - int ret; - - if (!desc || !desc->set) - return ERR_PTR(-EINVAL); - - sw = kzalloc(sizeof(*sw), GFP_KERNEL); - if (!sw) - return ERR_PTR(-ENOMEM); - - mutex_init(&sw->lock); - - sw->allow_userspace_control = desc->allow_userspace_control; - sw->usb2_port = desc->usb2_port; - sw->usb3_port = desc->usb3_port; - sw->udc = desc->udc; - sw->set = desc->set; - sw->get = desc->get; - - sw->dev.parent = parent; - sw->dev.class = role_class; - sw->dev.type = &usb_role_dev_type; - dev_set_name(&sw->dev, "%s-role-switch", dev_name(parent)); - - ret = device_register(&sw->dev); - if (ret) { - put_device(&sw->dev); - return ERR_PTR(ret); - } - - /* TODO: Symlinks for the host port and the device controller. */ - - return sw; -} -EXPORT_SYMBOL_GPL(usb_role_switch_register); - -/** - * usb_role_switch_unregister - Unregsiter USB Role Switch - * @sw: USB Role Switch - * - * Unregister switch that was registered with usb_role_switch_register(). - */ -void usb_role_switch_unregister(struct usb_role_switch *sw) -{ - if (!IS_ERR_OR_NULL(sw)) - device_unregister(&sw->dev); -} -EXPORT_SYMBOL_GPL(usb_role_switch_unregister); - -static int __init usb_roles_init(void) -{ - role_class = class_create(THIS_MODULE, "usb_role"); - return PTR_ERR_OR_ZERO(role_class); -} -subsys_initcall(usb_roles_init); - -static void __exit usb_roles_exit(void) -{ - class_destroy(role_class); -} -module_exit(usb_roles_exit); - -MODULE_AUTHOR("Heikki Krogerus "); -MODULE_AUTHOR("Hans de Goede "); -MODULE_LICENSE("GPL v2"); -MODULE_DESCRIPTION("USB Role Class"); diff --git a/drivers/usb/roles/Kconfig b/drivers/usb/roles/Kconfig index f5a5e6f79f1b..e4194ac94510 100644 --- a/drivers/usb/roles/Kconfig +++ b/drivers/usb/roles/Kconfig @@ -1,3 +1,16 @@ +config USB_ROLE_SWITCH + tristate "USB Role Switch Support" + help + USB Role Switch is a device that can select the USB role - host or + device - for a USB port (connector). In most cases dual-role capable + USB controller will also represent the switch, but on some platforms + multiplexer/demultiplexer switch is used to route the data lines on + the USB connector between separate USB host and device controllers. + + Say Y here if your USB connectors support both device and host roles. + To compile the driver as module, choose M here: the module will be + called roles.ko. + if USB_ROLE_SWITCH config USB_ROLES_INTEL_XHCI diff --git a/drivers/usb/roles/Makefile b/drivers/usb/roles/Makefile index e44b179ba275..c02873206fc1 100644 --- a/drivers/usb/roles/Makefile +++ b/drivers/usb/roles/Makefile @@ -1 +1,3 @@ -obj-$(CONFIG_USB_ROLES_INTEL_XHCI) += intel-xhci-usb-role-switch.o +obj-$(CONFIG_USB_ROLE_SWITCH) += roles.o +roles-y := class.o +obj-$(CONFIG_USB_ROLES_INTEL_XHCI) += intel-xhci-usb-role-switch.o diff --git a/drivers/usb/roles/class.c b/drivers/usb/roles/class.c new file mode 100644 index 000000000000..99116af07f1d --- /dev/null +++ b/drivers/usb/roles/class.c @@ -0,0 +1,314 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * USB Role Switch Support + * + * Copyright (C) 2018 Intel Corporation + * Author: Heikki Krogerus + * Hans de Goede + */ + +#include +#include +#include +#include +#include + +static struct class *role_class; + +struct usb_role_switch { + struct device dev; + struct mutex lock; /* device lock*/ + enum usb_role role; + + /* From descriptor */ + struct device *usb2_port; + struct device *usb3_port; + struct device *udc; + usb_role_switch_set_t set; + usb_role_switch_get_t get; + bool allow_userspace_control; +}; + +#define to_role_switch(d) container_of(d, struct usb_role_switch, dev) + +/** + * usb_role_switch_set_role - Set USB role for a switch + * @sw: USB role switch + * @role: USB role to be switched to + * + * Set USB role @role for @sw. + */ +int usb_role_switch_set_role(struct usb_role_switch *sw, enum usb_role role) +{ + int ret; + + if (IS_ERR_OR_NULL(sw)) + return 0; + + mutex_lock(&sw->lock); + + ret = sw->set(sw->dev.parent, role); + if (!ret) + sw->role = role; + + mutex_unlock(&sw->lock); + + return ret; +} +EXPORT_SYMBOL_GPL(usb_role_switch_set_role); + +/** + * usb_role_switch_get_role - Get the USB role for a switch + * @sw: USB role switch + * + * Depending on the role-switch-driver this function returns either a cached + * value of the last set role, or reads back the actual value from the hardware. + */ +enum usb_role usb_role_switch_get_role(struct usb_role_switch *sw) +{ + enum usb_role role; + + if (IS_ERR_OR_NULL(sw)) + return USB_ROLE_NONE; + + mutex_lock(&sw->lock); + + if (sw->get) + role = sw->get(sw->dev.parent); + else + role = sw->role; + + mutex_unlock(&sw->lock); + + return role; +} +EXPORT_SYMBOL_GPL(usb_role_switch_get_role); + +static int __switch_match(struct device *dev, const void *name) +{ + return !strcmp((const char *)name, dev_name(dev)); +} + +static void *usb_role_switch_match(struct device_connection *con, int ep, + void *data) +{ + struct device *dev; + + dev = class_find_device(role_class, NULL, con->endpoint[ep], + __switch_match); + + return dev ? to_role_switch(dev) : ERR_PTR(-EPROBE_DEFER); +} + +/** + * usb_role_switch_get - Find USB role switch linked with the caller + * @dev: The caller device + * + * Finds and returns role switch linked with @dev. The reference count for the + * found switch is incremented. + */ +struct usb_role_switch *usb_role_switch_get(struct device *dev) +{ + struct usb_role_switch *sw; + + sw = device_connection_find_match(dev, "usb-role-switch", NULL, + usb_role_switch_match); + + if (!IS_ERR_OR_NULL(sw)) + WARN_ON(!try_module_get(sw->dev.parent->driver->owner)); + + return sw; +} +EXPORT_SYMBOL_GPL(usb_role_switch_get); + +/** + * usb_role_switch_put - Release handle to a switch + * @sw: USB Role Switch + * + * Decrement reference count for @sw. + */ +void usb_role_switch_put(struct usb_role_switch *sw) +{ + if (!IS_ERR_OR_NULL(sw)) { + put_device(&sw->dev); + module_put(sw->dev.parent->driver->owner); + } +} +EXPORT_SYMBOL_GPL(usb_role_switch_put); + +static umode_t +usb_role_switch_is_visible(struct kobject *kobj, struct attribute *attr, int n) +{ + struct device *dev = container_of(kobj, typeof(*dev), kobj); + struct usb_role_switch *sw = to_role_switch(dev); + + if (sw->allow_userspace_control) + return attr->mode; + + return 0; +} + +static const char * const usb_roles[] = { + [USB_ROLE_NONE] = "none", + [USB_ROLE_HOST] = "host", + [USB_ROLE_DEVICE] = "device", +}; + +static ssize_t +role_show(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct usb_role_switch *sw = to_role_switch(dev); + enum usb_role role = usb_role_switch_get_role(sw); + + return sprintf(buf, "%s\n", usb_roles[role]); +} + +static ssize_t role_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t size) +{ + struct usb_role_switch *sw = to_role_switch(dev); + int ret; + + ret = sysfs_match_string(usb_roles, buf); + if (ret < 0) { + bool res; + + /* Extra check if the user wants to disable the switch */ + ret = kstrtobool(buf, &res); + if (ret || res) + return -EINVAL; + } + + ret = usb_role_switch_set_role(sw, ret); + if (ret) + return ret; + + return size; +} +static DEVICE_ATTR_RW(role); + +static struct attribute *usb_role_switch_attrs[] = { + &dev_attr_role.attr, + NULL, +}; + +static const struct attribute_group usb_role_switch_group = { + .is_visible = usb_role_switch_is_visible, + .attrs = usb_role_switch_attrs, +}; + +static const struct attribute_group *usb_role_switch_groups[] = { + &usb_role_switch_group, + NULL, +}; + +static int +usb_role_switch_uevent(struct device *dev, struct kobj_uevent_env *env) +{ + int ret; + + ret = add_uevent_var(env, "USB_ROLE_SWITCH=%s", dev_name(dev)); + if (ret) + dev_err(dev, "failed to add uevent USB_ROLE_SWITCH\n"); + + return ret; +} + +static void usb_role_switch_release(struct device *dev) +{ + struct usb_role_switch *sw = to_role_switch(dev); + + kfree(sw); +} + +static const struct device_type usb_role_dev_type = { + .name = "usb_role_switch", + .groups = usb_role_switch_groups, + .uevent = usb_role_switch_uevent, + .release = usb_role_switch_release, +}; + +/** + * usb_role_switch_register - Register USB Role Switch + * @parent: Parent device for the switch + * @desc: Description of the switch + * + * USB Role Switch is a device capable or choosing the role for USB connector. + * On platforms where the USB controller is dual-role capable, the controller + * driver will need to register the switch. On platforms where the USB host and + * USB device controllers behind the connector are separate, there will be a + * mux, and the driver for that mux will need to register the switch. + * + * Returns handle to a new role switch or ERR_PTR. The content of @desc is + * copied. + */ +struct usb_role_switch * +usb_role_switch_register(struct device *parent, + const struct usb_role_switch_desc *desc) +{ + struct usb_role_switch *sw; + int ret; + + if (!desc || !desc->set) + return ERR_PTR(-EINVAL); + + sw = kzalloc(sizeof(*sw), GFP_KERNEL); + if (!sw) + return ERR_PTR(-ENOMEM); + + mutex_init(&sw->lock); + + sw->allow_userspace_control = desc->allow_userspace_control; + sw->usb2_port = desc->usb2_port; + sw->usb3_port = desc->usb3_port; + sw->udc = desc->udc; + sw->set = desc->set; + sw->get = desc->get; + + sw->dev.parent = parent; + sw->dev.class = role_class; + sw->dev.type = &usb_role_dev_type; + dev_set_name(&sw->dev, "%s-role-switch", dev_name(parent)); + + ret = device_register(&sw->dev); + if (ret) { + put_device(&sw->dev); + return ERR_PTR(ret); + } + + /* TODO: Symlinks for the host port and the device controller. */ + + return sw; +} +EXPORT_SYMBOL_GPL(usb_role_switch_register); + +/** + * usb_role_switch_unregister - Unregsiter USB Role Switch + * @sw: USB Role Switch + * + * Unregister switch that was registered with usb_role_switch_register(). + */ +void usb_role_switch_unregister(struct usb_role_switch *sw) +{ + if (!IS_ERR_OR_NULL(sw)) + device_unregister(&sw->dev); +} +EXPORT_SYMBOL_GPL(usb_role_switch_unregister); + +static int __init usb_roles_init(void) +{ + role_class = class_create(THIS_MODULE, "usb_role"); + return PTR_ERR_OR_ZERO(role_class); +} +subsys_initcall(usb_roles_init); + +static void __exit usb_roles_exit(void) +{ + class_destroy(role_class); +} +module_exit(usb_roles_exit); + +MODULE_AUTHOR("Heikki Krogerus "); +MODULE_AUTHOR("Hans de Goede "); +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("USB Role Class"); -- cgit From 8dc7623bf608495b6e6743e805807c7840673573 Mon Sep 17 00:00:00 2001 From: Roger Quadros Date: Fri, 14 Dec 2018 11:36:15 +0200 Subject: usb: ehci-omap: Fix deferred probe for phy handling PHY model is being used on omap5 platforms even if port mode is not OMAP_EHCI_PORT_MODE_PHY. So don't guess if PHY is required or not based on PHY mode. If PHY is provided in device tree, it must be required. So, if devm_usb_get_phy_by_phandle() gives us an error code other than -ENODEV (no PHY) then error out. This fixes USB Ethernet on omap5-uevm if PHY happens to probe after EHCI thus causing a -EPROBE_DEFER. Cc: Johan Hovold Cc: Ladislav Michl Reported-by: Peter Ujfalusi Signed-off-by: Roger Quadros Tested-by: Peter Ujfalusi Acked-by: Tony Lindgren Acked-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ehci-omap.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/host/ehci-omap.c b/drivers/usb/host/ehci-omap.c index 7e4c13346a1e..7d20296cbe9f 100644 --- a/drivers/usb/host/ehci-omap.c +++ b/drivers/usb/host/ehci-omap.c @@ -159,11 +159,12 @@ static int ehci_hcd_omap_probe(struct platform_device *pdev) /* get the PHY device */ phy = devm_usb_get_phy_by_phandle(dev, "phys", i); if (IS_ERR(phy)) { - /* Don't bail out if PHY is not absolutely necessary */ - if (pdata->port_mode[i] != OMAP_EHCI_PORT_MODE_PHY) + ret = PTR_ERR(phy); + if (ret == -ENODEV) { /* no PHY */ + phy = NULL; continue; + } - ret = PTR_ERR(phy); if (ret != -EPROBE_DEFER) dev_err(dev, "Can't get PHY for port %d: %d\n", i, ret); -- cgit From 1d6e81a288e28d8d0e38e0501a324216f79bba35 Mon Sep 17 00:00:00 2001 From: Fabrizio Castro Date: Fri, 14 Dec 2018 08:27:03 +0000 Subject: usb: renesas_usbhs: add support for RZ/G2E HS-USB found in RZ/G2E (a.k.a. r8a774c0) is very similar to the one found in R-Car E3 (a.k.a. r8a77990), as it needs to release the PLL reset by the UGCTRL register like R-Car E3, therefore add r8a774c0 support in a similar fashion to what was done for the r8a77990. Signed-off-by: Fabrizio Castro Reviewed-by: Simon Horman Acked-by: Yoshihiro Shimoda Signed-off-by: Greg Kroah-Hartman --- drivers/usb/renesas_usbhs/common.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/renesas_usbhs/common.c b/drivers/usb/renesas_usbhs/common.c index 2ff7991f4517..249fbee97f3f 100644 --- a/drivers/usb/renesas_usbhs/common.c +++ b/drivers/usb/renesas_usbhs/common.c @@ -539,6 +539,10 @@ static int usbhsc_drvcllbck_notify_hotplug(struct platform_device *pdev) * platform functions */ static const struct of_device_id usbhs_of_match[] = { + { + .compatible = "renesas,usbhs-r8a774c0", + .data = (void *)USBHS_TYPE_RCAR_GEN3_WITH_PLL, + }, { .compatible = "renesas,usbhs-r8a7790", .data = (void *)USBHS_TYPE_RCAR_GEN2, -- cgit From b6061b1e566d70c7686d194a6c47dc6ffa665c77 Mon Sep 17 00:00:00 2001 From: Thinh Nguyen Date: Mon, 10 Dec 2018 14:07:54 -0800 Subject: PCI: Move Synopsys HAPS platform device IDs Move Synopsys HAPS platform device IDs to pci_ids.h so that both drivers/pci/quirks.c and dwc3-haps driver can reference these IDs. Signed-off-by: Thinh Nguyen Signed-off-by: Bjorn Helgaas Acked-by: Felipe Balbi --- drivers/usb/dwc3/dwc3-haps.c | 4 ---- 1 file changed, 4 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/dwc3-haps.c b/drivers/usb/dwc3/dwc3-haps.c index c9cc33881bef..02d57d98ef9b 100644 --- a/drivers/usb/dwc3/dwc3-haps.c +++ b/drivers/usb/dwc3/dwc3-haps.c @@ -15,10 +15,6 @@ #include #include -#define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3 0xabcd -#define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3_AXI 0xabce -#define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB31 0xabcf - /** * struct dwc3_haps - Driver private structure * @dwc3: child dwc3 platform_device -- cgit From 8d503f206c336677954160ac62f0c7d9c219cd89 Mon Sep 17 00:00:00 2001 From: Scott Chen Date: Thu, 13 Dec 2018 06:01:47 -0500 Subject: USB: serial: pl2303: add ids for Hewlett-Packard HP POS pole displays Add device ids to pl2303 for the HP POS pole displays: LM920: 03f0:026b TD620: 03f0:0956 LD960TA: 03f0:4439 LD220TA: 03f0:4349 LM940: 03f0:5039 Signed-off-by: Scott Chen Cc: stable Signed-off-by: Johan Hovold --- drivers/usb/serial/pl2303.c | 5 +++++ drivers/usb/serial/pl2303.h | 5 +++++ 2 files changed, 10 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c index a4e0d13fc121..98e7a5df0f6d 100644 --- a/drivers/usb/serial/pl2303.c +++ b/drivers/usb/serial/pl2303.c @@ -91,9 +91,14 @@ static const struct usb_device_id id_table[] = { { USB_DEVICE(YCCABLE_VENDOR_ID, YCCABLE_PRODUCT_ID) }, { USB_DEVICE(SUPERIAL_VENDOR_ID, SUPERIAL_PRODUCT_ID) }, { USB_DEVICE(HP_VENDOR_ID, HP_LD220_PRODUCT_ID) }, + { USB_DEVICE(HP_VENDOR_ID, HP_LD220TA_PRODUCT_ID) }, { USB_DEVICE(HP_VENDOR_ID, HP_LD960_PRODUCT_ID) }, + { USB_DEVICE(HP_VENDOR_ID, HP_LD960TA_PRODUCT_ID) }, { USB_DEVICE(HP_VENDOR_ID, HP_LCM220_PRODUCT_ID) }, { USB_DEVICE(HP_VENDOR_ID, HP_LCM960_PRODUCT_ID) }, + { USB_DEVICE(HP_VENDOR_ID, HP_LM920_PRODUCT_ID) }, + { USB_DEVICE(HP_VENDOR_ID, HP_LM940_PRODUCT_ID) }, + { USB_DEVICE(HP_VENDOR_ID, HP_TD620_PRODUCT_ID) }, { USB_DEVICE(CRESSI_VENDOR_ID, CRESSI_EDY_PRODUCT_ID) }, { USB_DEVICE(ZEAGLE_VENDOR_ID, ZEAGLE_N2ITION3_PRODUCT_ID) }, { USB_DEVICE(SONY_VENDOR_ID, SONY_QN3USB_PRODUCT_ID) }, diff --git a/drivers/usb/serial/pl2303.h b/drivers/usb/serial/pl2303.h index 26965cc23c17..4e2554d55362 100644 --- a/drivers/usb/serial/pl2303.h +++ b/drivers/usb/serial/pl2303.h @@ -119,10 +119,15 @@ /* Hewlett-Packard POS Pole Displays */ #define HP_VENDOR_ID 0x03f0 +#define HP_LM920_PRODUCT_ID 0x026b +#define HP_TD620_PRODUCT_ID 0x0956 #define HP_LD960_PRODUCT_ID 0x0b39 #define HP_LCM220_PRODUCT_ID 0x3139 #define HP_LCM960_PRODUCT_ID 0x3239 #define HP_LD220_PRODUCT_ID 0x3524 +#define HP_LD220TA_PRODUCT_ID 0x4349 +#define HP_LD960TA_PRODUCT_ID 0x4439 +#define HP_LM940_PRODUCT_ID 0x5039 /* Cressi Edy (diving computer) PC interface */ #define CRESSI_VENDOR_ID 0x04b8 -- cgit From 6010abf2c2c0e382d7e8ee44bd11f343aae90cce Mon Sep 17 00:00:00 2001 From: Bin Liu Date: Tue, 18 Dec 2018 07:58:04 -0600 Subject: usb: musb: dsps: fix otg state machine Due to lack of ID pin interrupt event on AM335x devices, the musb dsps driver uses polling to detect usb device attach for dual-role port. But in the case if a micro-A cable adapter is attached without a USB device attached to the cable, the musb state machine gets stuck in a_wait_vrise state waiting for the MUSB_CONNECT interrupt which won't happen due to the usb device is not attached. The state is stuck in a_wait_vrise even after the micro-A cable is detached, which could cause VBUS retention if then the dual-role port is attached to a host port. To fix the problem, make a_wait_vrise as a transient state, then move the state to either a_wait_bcon for host port or a_idle state for dual-role port, if no usb device is attached to the port. Signed-off-by: Bin Liu Signed-off-by: Greg Kroah-Hartman --- drivers/usb/musb/musb_dsps.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/musb/musb_dsps.c b/drivers/usb/musb/musb_dsps.c index 23a0df79ef21..1e6d78b1334e 100644 --- a/drivers/usb/musb/musb_dsps.c +++ b/drivers/usb/musb/musb_dsps.c @@ -227,8 +227,13 @@ static int dsps_check_status(struct musb *musb, void *unused) switch (musb->xceiv->otg->state) { case OTG_STATE_A_WAIT_VRISE: - dsps_mod_timer_optional(glue); - break; + if (musb->port_mode == MUSB_HOST) { + musb->xceiv->otg->state = OTG_STATE_A_WAIT_BCON; + dsps_mod_timer_optional(glue); + break; + } + /* fall through */ + case OTG_STATE_A_WAIT_BCON: /* keep VBUS on for host-only mode */ if (musb->port_mode == MUSB_HOST) { -- cgit From 54578ee883e34d2d1c518d48f1c1e2dd3f387188 Mon Sep 17 00:00:00 2001 From: Bin Liu Date: Tue, 18 Dec 2018 07:58:05 -0600 Subject: usb: musb: dsps: fix runtime pm for peripheral mode Since the runtime PM support was added in musb, dsps relies on the timer calling otg_timer() to activate the usb subsystem. However the driver doesn't enable the timer for peripheral port, then the peripheral port is unable to be enumerated by a host if the other usb port is disabled or in peripheral mode too. So let's start the timer for peripheral port too. Fixes: ea2f35c01d5e ("usb: musb: Fix sleeping function called from invalid context for hdrc glue") Acked-by: Tony Lindgren Signed-off-by: Bin Liu Signed-off-by: Greg Kroah-Hartman --- drivers/usb/musb/musb_dsps.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/musb/musb_dsps.c b/drivers/usb/musb/musb_dsps.c index 1e6d78b1334e..403eb97915f8 100644 --- a/drivers/usb/musb/musb_dsps.c +++ b/drivers/usb/musb/musb_dsps.c @@ -181,9 +181,11 @@ static void dsps_musb_enable(struct musb *musb) musb_writel(reg_base, wrp->epintr_set, epmask); musb_writel(reg_base, wrp->coreintr_set, coremask); - /* start polling for ID change in dual-role idle mode */ - if (musb->xceiv->otg->state == OTG_STATE_B_IDLE && - musb->port_mode == MUSB_OTG) + /* + * start polling for runtime PM active and idle, + * and for ID change in dual-role idle mode. + */ + if (musb->xceiv->otg->state == OTG_STATE_B_IDLE) dsps_mod_timer(glue, -1); } @@ -254,6 +256,10 @@ static int dsps_check_status(struct musb *musb, void *unused) musb->xceiv->otg->state = OTG_STATE_A_IDLE; MUSB_HST_MODE(musb); } + + if (musb->port_mode == MUSB_PERIPHERAL) + skip_session = 1; + if (!(devctl & MUSB_DEVCTL_SESSION) && !skip_session) musb_writeb(mregs, MUSB_DEVCTL, MUSB_DEVCTL_SESSION); -- cgit From 4dd4130a722fb046e941010cf5576aed252bb58a Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Thu, 13 Dec 2018 16:17:01 +0100 Subject: scsi: make sure all drivers set the use_clustering flag A few drivers were not setting the use_clustering flag at all and thus default to disable. Fix them up to explicitly set this field in preparation for additional cleanups. Signed-off-by: Christoph Hellwig Signed-off-by: Martin K. Petersen --- drivers/usb/storage/uas.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/usb') diff --git a/drivers/usb/storage/uas.c b/drivers/usb/storage/uas.c index 1f7b401c4d04..6c75a0a50b3a 100644 --- a/drivers/usb/storage/uas.c +++ b/drivers/usb/storage/uas.c @@ -879,6 +879,7 @@ static struct scsi_host_template uas_host_template = { .this_id = -1, .sg_tablesize = SG_NONE, .skip_settle_delay = 1, + .use_clustering = DISABLE_CLUSTERING, }; #define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \ -- cgit From 2a3d4eb8e228061c09d5ca8bf39e7f00c2091213 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Thu, 13 Dec 2018 16:17:02 +0100 Subject: scsi: flip the default on use_clustering Most SCSI drivers want to enable "clustering", that is merging of segments so that they might span more than a single page. Remove the ENABLE_CLUSTERING define, and require drivers to explicitly set DISABLE_CLUSTERING to disable this feature. Signed-off-by: Christoph Hellwig Signed-off-by: Martin K. Petersen --- drivers/usb/image/microtek.c | 1 - drivers/usb/storage/scsiglue.c | 7 ------- 2 files changed, 8 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/image/microtek.c b/drivers/usb/image/microtek.c index 9f2f563c82ed..607be1f4fe27 100644 --- a/drivers/usb/image/microtek.c +++ b/drivers/usb/image/microtek.c @@ -632,7 +632,6 @@ static struct scsi_host_template mts_scsi_host_template = { .sg_tablesize = SG_ALL, .can_queue = 1, .this_id = -1, - .use_clustering = 1, .emulated = 1, .slave_alloc = mts_slave_alloc, .slave_configure = mts_slave_configure, diff --git a/drivers/usb/storage/scsiglue.c b/drivers/usb/storage/scsiglue.c index e227bb5b794f..fde2e71a6ade 100644 --- a/drivers/usb/storage/scsiglue.c +++ b/drivers/usb/storage/scsiglue.c @@ -639,13 +639,6 @@ static const struct scsi_host_template usb_stor_host_template = { */ .max_sectors = 240, - /* - * merge commands... this seems to help performance, but - * periodically someone should test to see which setting is more - * optimal. - */ - .use_clustering = 1, - /* emulated HBA */ .emulated = 1, -- cgit From 4af14d113bcf95c12d1462ba623b7e7117bd3fb3 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Thu, 13 Dec 2018 16:17:09 +0100 Subject: scsi: remove the use_clustering flag The same effects can be achieved by setting the dma_boundary to PAGE_SIZE - 1 and the max_segment_size to PAGE_SIZE, so shift those settings into the drivers. Note that in many cases the setting might be bogus, but this keeps the status quo. [mkp: fix myrs and myrb] Signed-off-by: Christoph Hellwig Signed-off-by: Martin K. Petersen --- drivers/usb/storage/uas.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/storage/uas.c b/drivers/usb/storage/uas.c index 6c75a0a50b3a..36742e8e7edc 100644 --- a/drivers/usb/storage/uas.c +++ b/drivers/usb/storage/uas.c @@ -879,7 +879,7 @@ static struct scsi_host_template uas_host_template = { .this_id = -1, .sg_tablesize = SG_NONE, .skip_settle_delay = 1, - .use_clustering = DISABLE_CLUSTERING, + .dma_boundary = PAGE_SIZE - 1, }; #define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \ -- cgit From c710d0bb76ff0795d8b6c1cda1e01e6e1e661a4a Mon Sep 17 00:00:00 2001 From: Kyle Tso Date: Mon, 17 Dec 2018 21:22:13 +0800 Subject: usb: typec: tcpm: Extend the matching rules on PPS APDO selection Current matching rules ensure that the voltage range of selected Source Capability is entirely within the range defined in one of the Sink Capabilities. This is reasonable but not practical because Sink may not support wide range of voltage when sinking power while Source could advertise its capabilities in relatively wider range. For example, a Source PDO advertising 3.3V-11V@3A (9V Prog of Fixed Nominal Voltage) will not be selected if the Sink requires 5V-12V@3A PPS power. However, the Sink could work well if the requested voltage range in RDOs is 5V-11V@3A. Currently accepted: |--------- source -----| |----------- sink ---------------| Currently not accepted: |--------- source -----| |----------- sink ---------------| |--------- source -----| |----------- sink ---------------| |--------- source -----------------| |------ sink -------| To improve the usability, change the matching rules to what listed below: a. The Source PDO is selectable if any portion of the voltage range overlaps one of the Sink PDO's voltage range. b. The maximum operational voltage will be the lower one between the selected Source PDO and the matching Sink PDO. c. The maximum power will be the maximum operational voltage times the maximum current defined in the selected Source PDO d. Select the Source PDO with the highest maximum power Signed-off-by: Kyle Tso Acked-by: Adam Thomson Reviewed-by: Heikki Krogerus Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/tcpm/tcpm.c | 35 ++++++++++++++++++++--------------- 1 file changed, 20 insertions(+), 15 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c index 3620efee2688..4bc29b586698 100644 --- a/drivers/usb/typec/tcpm/tcpm.c +++ b/drivers/usb/typec/tcpm/tcpm.c @@ -2213,7 +2213,8 @@ static unsigned int tcpm_pd_select_pps_apdo(struct tcpm_port *port) unsigned int i, j, max_mw = 0, max_mv = 0; unsigned int min_src_mv, max_src_mv, src_ma, src_mw; unsigned int min_snk_mv, max_snk_mv; - u32 pdo; + unsigned int max_op_mv; + u32 pdo, src, snk; unsigned int src_pdo = 0, snk_pdo = 0; /* @@ -2263,16 +2264,18 @@ static unsigned int tcpm_pd_select_pps_apdo(struct tcpm_port *port) continue; } - if (max_src_mv <= max_snk_mv && - min_src_mv >= min_snk_mv) { + if (min_src_mv <= max_snk_mv && + max_src_mv >= min_snk_mv) { + max_op_mv = min(max_src_mv, max_snk_mv); + src_mw = (max_op_mv * src_ma) / 1000; /* Prefer higher voltages if available */ if ((src_mw == max_mw && - min_src_mv > max_mv) || + max_op_mv > max_mv) || src_mw > max_mw) { src_pdo = i; snk_pdo = j; max_mw = src_mw; - max_mv = max_src_mv; + max_mv = max_op_mv; } } } @@ -2285,16 +2288,18 @@ static unsigned int tcpm_pd_select_pps_apdo(struct tcpm_port *port) } if (src_pdo) { - pdo = port->source_caps[src_pdo]; - - port->pps_data.min_volt = pdo_pps_apdo_min_voltage(pdo); - port->pps_data.max_volt = pdo_pps_apdo_max_voltage(pdo); - port->pps_data.max_curr = - min_pps_apdo_current(pdo, port->snk_pdo[snk_pdo]); - port->pps_data.out_volt = - min(pdo_pps_apdo_max_voltage(pdo), port->pps_data.out_volt); - port->pps_data.op_curr = - min(port->pps_data.max_curr, port->pps_data.op_curr); + src = port->source_caps[src_pdo]; + snk = port->snk_pdo[snk_pdo]; + + port->pps_data.min_volt = max(pdo_pps_apdo_min_voltage(src), + pdo_pps_apdo_min_voltage(snk)); + port->pps_data.max_volt = min(pdo_pps_apdo_max_voltage(src), + pdo_pps_apdo_max_voltage(snk)); + port->pps_data.max_curr = min_pps_apdo_current(src, snk); + port->pps_data.out_volt = min(port->pps_data.max_volt, + port->pps_data.out_volt); + port->pps_data.op_curr = min(port->pps_data.max_curr, + port->pps_data.op_curr); } return src_pdo; -- cgit From c85400f886e3d41e69966470879f635a2b50084c Mon Sep 17 00:00:00 2001 From: Jia-Ju Bai Date: Tue, 18 Dec 2018 20:04:25 +0800 Subject: usb: r8a66597: Fix a possible concurrency use-after-free bug in r8a66597_endpoint_disable() The function r8a66597_endpoint_disable() and r8a66597_urb_enqueue() may be concurrently executed. The two functions both access a possible shared variable "hep->hcpriv". This shared variable is freed by r8a66597_endpoint_disable() via the call path: r8a66597_endpoint_disable kfree(hep->hcpriv) (line 1995 in Linux-4.19) This variable is read by r8a66597_urb_enqueue() via the call path: r8a66597_urb_enqueue spin_lock_irqsave(&r8a66597->lock) init_pipe_info enable_r8a66597_pipe pipe = hep->hcpriv (line 802 in Linux-4.19) The read operation is protected by a spinlock, but the free operation is not protected by this spinlock, thus a concurrency use-after-free bug may occur. To fix this bug, the spin-lock and spin-unlock function calls in r8a66597_endpoint_disable() are moved to protect the free operation. Signed-off-by: Jia-Ju Bai Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/r8a66597-hcd.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/host/r8a66597-hcd.c b/drivers/usb/host/r8a66597-hcd.c index 984892dd72f5..42668aeca57c 100644 --- a/drivers/usb/host/r8a66597-hcd.c +++ b/drivers/usb/host/r8a66597-hcd.c @@ -1979,6 +1979,8 @@ static int r8a66597_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, static void r8a66597_endpoint_disable(struct usb_hcd *hcd, struct usb_host_endpoint *hep) +__acquires(r8a66597->lock) +__releases(r8a66597->lock) { struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); struct r8a66597_pipe *pipe = (struct r8a66597_pipe *)hep->hcpriv; @@ -1991,13 +1993,14 @@ static void r8a66597_endpoint_disable(struct usb_hcd *hcd, return; pipenum = pipe->info.pipenum; + spin_lock_irqsave(&r8a66597->lock, flags); if (pipenum == 0) { kfree(hep->hcpriv); hep->hcpriv = NULL; + spin_unlock_irqrestore(&r8a66597->lock, flags); return; } - spin_lock_irqsave(&r8a66597->lock, flags); pipe_stop(r8a66597, pipe); pipe_irq_disable(r8a66597, pipenum); disable_irq_empty(r8a66597, pipenum); -- cgit From eafb27fa5283599ce6c5492ea18cf636a28222bb Mon Sep 17 00:00:00 2001 From: Macpaul Lin Date: Wed, 19 Dec 2018 12:11:03 +0800 Subject: cdc-acm: fix abnormal DATA RX issue for Mediatek Preloader. Mediatek Preloader is a proprietary embedded boot loader for loading Little Kernel and Linux into device DRAM. This boot loader also handle firmware update. Mediatek Preloader will be enumerated as a virtual COM port when the device is connected to Windows or Linux OS via CDC-ACM class driver. When the USB enumeration has been done, Mediatek Preloader will send out handshake command "READY" to PC actively instead of waiting command from the download tool. Since Linux 4.12, the commit "tty: reset termios state on device registration" (93857edd9829e144acb6c7e72d593f6e01aead66) causes Mediatek Preloader receiving some abnoraml command like "READYXX" as it sent. This will be recognized as an incorrect response. The behavior change also causes the download handshake fail. This change only affects subsequent connects if the reconnected device happens to get the same minor number. By disabling the ECHO termios flag could avoid this problem. However, it cannot be done by user space configuration when download tool open /dev/ttyACM0. This is because the device running Mediatek Preloader will send handshake command "READY" immediately once the CDC-ACM driver is ready. This patch wants to fix above problem by introducing "DISABLE_ECHO" property in driver_info. When Mediatek Preloader is connected, the CDC-ACM driver could disable ECHO flag in termios to avoid the problem. Signed-off-by: Macpaul Lin Cc: stable@vger.kernel.org Reviewed-by: Johan Hovold Acked-by: Oliver Neukum Signed-off-by: Greg Kroah-Hartman --- drivers/usb/class/cdc-acm.c | 10 ++++++++++ drivers/usb/class/cdc-acm.h | 1 + 2 files changed, 11 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index 1b68fed464cb..ed8c62b2d9d1 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -581,6 +581,13 @@ static int acm_tty_install(struct tty_driver *driver, struct tty_struct *tty) if (retval) goto error_init_termios; + /* + * Suppress initial echoing for some devices which might send data + * immediately after acm driver has been installed. + */ + if (acm->quirks & DISABLE_ECHO) + tty->termios.c_lflag &= ~ECHO; + tty->driver_data = acm; return 0; @@ -1657,6 +1664,9 @@ static const struct usb_device_id acm_ids[] = { { USB_DEVICE(0x0e8d, 0x0003), /* FIREFLY, MediaTek Inc; andrey.arapov@gmail.com */ .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ }, + { USB_DEVICE(0x0e8d, 0x2000), /* MediaTek Inc Preloader */ + .driver_info = DISABLE_ECHO, /* DISABLE ECHO in termios flag */ + }, { USB_DEVICE(0x0e8d, 0x3329), /* MediaTek Inc GPS */ .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ }, diff --git a/drivers/usb/class/cdc-acm.h b/drivers/usb/class/cdc-acm.h index ca06b20d7af9..515aad0847ee 100644 --- a/drivers/usb/class/cdc-acm.h +++ b/drivers/usb/class/cdc-acm.h @@ -140,3 +140,4 @@ struct acm { #define QUIRK_CONTROL_LINE_STATE BIT(6) #define CLEAR_HALT_CONDITIONS BIT(7) #define SEND_ZERO_PACKET BIT(8) +#define DISABLE_ECHO BIT(9) -- cgit From 4b2c01ad902ec02fa962b233decd2f14be3714ba Mon Sep 17 00:00:00 2001 From: Jörgen Storvist Date: Fri, 21 Dec 2018 14:40:44 +0100 Subject: USB: serial: option: add Fibocom NL678 series MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Added USB serial option driver support for Fibocom NL678 series cellular module: VID 2cb7 and PIDs 0x0104 and 0x0105. Reserved network and ADB interfaces. T: Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 2 Spd=480 MxCh= 0 D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 P: Vendor=2cb7 ProdID=0104 Rev=03.10 S: Manufacturer=Fibocom S: Product=Fibocom NL678-E Modem S: SerialNumber=12345678 C: #Ifs= 6 Cfg#= 1 Atr=a0 MxPwr=500mA I: If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option I: If#= 1 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option I: If#= 2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option I: If#= 3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option I: If#= 4 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=qmi_wwan I: If#= 5 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=42 Prot=01 Driver=(none) T: Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 3 Spd=480 MxCh= 0 D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 P: Vendor=2cb7 ProdID=0105 Rev=03.10 S: Manufacturer=Fibocom S: Product=Fibocom NL678-E Modem S: SerialNumber=12345678 C: #Ifs= 7 Cfg#= 1 Atr=a0 MxPwr=500mA I: If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option I: If#= 1 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option I: If#= 2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option I: If#= 3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option I: If#= 4 Alt= 0 #EPs= 1 Cls=02(commc) Sub=06 Prot=00 Driver=cdc_ether I: If#= 5 Alt= 1 #EPs= 2 Cls=0a(data ) Sub=00 Prot=00 Driver=cdc_ether I: If#= 6 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=42 Prot=01 Driver=(none) Signed-off-by: Jörgen Storvist Cc: stable Acked-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/option.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c index 1ce27f3ff7a7..aef15497ff31 100644 --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -1955,6 +1955,10 @@ static const struct usb_device_id option_ids[] = { { USB_DEVICE_AND_INTERFACE_INFO(0x03f0, 0xa31d, 0xff, 0x06, 0x1b) }, { USB_DEVICE(0x1508, 0x1001), /* Fibocom NL668 */ .driver_info = RSVD(4) | RSVD(5) | RSVD(6) }, + { USB_DEVICE(0x2cb7, 0x0104), /* Fibocom NL678 series */ + .driver_info = RSVD(4) | RSVD(5) }, + { USB_DEVICE_INTERFACE_CLASS(0x2cb7, 0x0105, 0xff), /* Fibocom NL678 series */ + .driver_info = RSVD(6) }, { } /* Terminating entry */ }; MODULE_DEVICE_TABLE(usb, option_ids); -- cgit From 96d4f267e40f9509e8a66e2b39e8b95655617693 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Thu, 3 Jan 2019 18:57:57 -0800 Subject: Remove 'type' argument from access_ok() function Nobody has actually used the type (VERIFY_READ vs VERIFY_WRITE) argument of the user address range verification function since we got rid of the old racy i386-only code to walk page tables by hand. It existed because the original 80386 would not honor the write protect bit when in kernel mode, so you had to do COW by hand before doing any user access. But we haven't supported that in a long time, and these days the 'type' argument is a purely historical artifact. A discussion about extending 'user_access_begin()' to do the range checking resulted this patch, because there is no way we're going to move the old VERIFY_xyz interface to that model. And it's best done at the end of the merge window when I've done most of my merges, so let's just get this done once and for all. This patch was mostly done with a sed-script, with manual fix-ups for the cases that weren't of the trivial 'access_ok(VERIFY_xyz' form. There were a couple of notable cases: - csky still had the old "verify_area()" name as an alias. - the iter_iov code had magical hardcoded knowledge of the actual values of VERIFY_{READ,WRITE} (not that they mattered, since nothing really used it) - microblaze used the type argument for a debug printout but other than those oddities this should be a total no-op patch. I tried to fix up all architectures, did fairly extensive grepping for access_ok() uses, and the changes are trivial, but I may have missed something. Any missed conversion should be trivially fixable, though. Signed-off-by: Linus Torvalds --- drivers/usb/core/devices.c | 2 +- drivers/usb/core/devio.c | 7 +++---- drivers/usb/gadget/function/f_hid.c | 4 ++-- drivers/usb/gadget/udc/atmel_usba_udc.c | 2 +- 4 files changed, 7 insertions(+), 8 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/core/devices.c b/drivers/usb/core/devices.c index 3de3c750b5f6..44f28a114c2b 100644 --- a/drivers/usb/core/devices.c +++ b/drivers/usb/core/devices.c @@ -598,7 +598,7 @@ static ssize_t usb_device_read(struct file *file, char __user *buf, return -EINVAL; if (nbytes <= 0) return 0; - if (!access_ok(VERIFY_WRITE, buf, nbytes)) + if (!access_ok(buf, nbytes)) return -EFAULT; mutex_lock(&usb_bus_idr_lock); diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c index a75bc0b8a50f..d65566341dd1 100644 --- a/drivers/usb/core/devio.c +++ b/drivers/usb/core/devio.c @@ -1094,7 +1094,7 @@ static int proc_control(struct usb_dev_state *ps, void __user *arg) ctrl.bRequestType, ctrl.bRequest, ctrl.wValue, ctrl.wIndex, ctrl.wLength); if (ctrl.bRequestType & 0x80) { - if (ctrl.wLength && !access_ok(VERIFY_WRITE, ctrl.data, + if (ctrl.wLength && !access_ok(ctrl.data, ctrl.wLength)) { ret = -EINVAL; goto done; @@ -1183,7 +1183,7 @@ static int proc_bulk(struct usb_dev_state *ps, void __user *arg) } tmo = bulk.timeout; if (bulk.ep & 0x80) { - if (len1 && !access_ok(VERIFY_WRITE, bulk.data, len1)) { + if (len1 && !access_ok(bulk.data, len1)) { ret = -EINVAL; goto done; } @@ -1584,8 +1584,7 @@ static int proc_do_submiturb(struct usb_dev_state *ps, struct usbdevfs_urb *uurb } if (uurb->buffer_length > 0 && - !access_ok(is_in ? VERIFY_WRITE : VERIFY_READ, - uurb->buffer, uurb->buffer_length)) { + !access_ok(uurb->buffer, uurb->buffer_length)) { ret = -EFAULT; goto error; } diff --git a/drivers/usb/gadget/function/f_hid.c b/drivers/usb/gadget/function/f_hid.c index 54e859dcb25c..75b113a5b25c 100644 --- a/drivers/usb/gadget/function/f_hid.c +++ b/drivers/usb/gadget/function/f_hid.c @@ -252,7 +252,7 @@ static ssize_t f_hidg_read(struct file *file, char __user *buffer, if (!count) return 0; - if (!access_ok(VERIFY_WRITE, buffer, count)) + if (!access_ok(buffer, count)) return -EFAULT; spin_lock_irqsave(&hidg->read_spinlock, flags); @@ -339,7 +339,7 @@ static ssize_t f_hidg_write(struct file *file, const char __user *buffer, unsigned long flags; ssize_t status = -ENOMEM; - if (!access_ok(VERIFY_READ, buffer, count)) + if (!access_ok(buffer, count)) return -EFAULT; spin_lock_irqsave(&hidg->write_spinlock, flags); diff --git a/drivers/usb/gadget/udc/atmel_usba_udc.c b/drivers/usb/gadget/udc/atmel_usba_udc.c index 11247322d587..660712e0bf98 100644 --- a/drivers/usb/gadget/udc/atmel_usba_udc.c +++ b/drivers/usb/gadget/udc/atmel_usba_udc.c @@ -88,7 +88,7 @@ static ssize_t queue_dbg_read(struct file *file, char __user *buf, size_t len, remaining, actual = 0; char tmpbuf[38]; - if (!access_ok(VERIFY_WRITE, buf, nbytes)) + if (!access_ok(buf, nbytes)) return -EFAULT; inode_lock(file_inode(file)); -- cgit From b81c2c33eab79dfd3650293b2227ee5c6036585c Mon Sep 17 00:00:00 2001 From: Max Schulze Date: Mon, 7 Jan 2019 08:31:49 +0100 Subject: USB: serial: simple: add Motorola Tetra TPG2200 device id Add new Motorola Tetra device id for Motorola Solutions TETRA PEI device T: Bus=02 Lev=01 Prnt=01 Port=01 Cnt=01 Dev#= 4 Spd=480 MxCh= 0 D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 P: Vendor=0cad ProdID=9016 Rev=24.16 S: Manufacturer=Motorola Solutions, Inc. S: Product=TETRA PEI interface C: #Ifs= 2 Cfg#= 1 Atr=80 MxPwr=500mA I: If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=00 Prot=00 Driver=usb_serial_simple I: If#= 1 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=00 Prot=00 Driver=usb_serial_simple Signed-off-by: Max Schulze Cc: stable Signed-off-by: Johan Hovold --- drivers/usb/serial/usb-serial-simple.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/usb-serial-simple.c b/drivers/usb/serial/usb-serial-simple.c index 4d0273508043..edbbb13d6de6 100644 --- a/drivers/usb/serial/usb-serial-simple.c +++ b/drivers/usb/serial/usb-serial-simple.c @@ -85,7 +85,8 @@ DEVICE(moto_modem, MOTO_IDS); /* Motorola Tetra driver */ #define MOTOROLA_TETRA_IDS() \ { USB_DEVICE(0x0cad, 0x9011) }, /* Motorola Solutions TETRA PEI */ \ - { USB_DEVICE(0x0cad, 0x9012) } /* MTP6550 */ + { USB_DEVICE(0x0cad, 0x9012) }, /* MTP6550 */ \ + { USB_DEVICE(0x0cad, 0x9016) } /* TPG2200 */ DEVICE(motorola_tetra, MOTOROLA_TETRA_IDS); /* Novatel Wireless GPS driver */ -- cgit From 34aabf918717dd14e05051896aaecd3b16b53d95 Mon Sep 17 00:00:00 2001 From: Daniele Palmas Date: Fri, 28 Dec 2018 16:15:41 +0100 Subject: usb: cdc-acm: send ZLP for Telit 3G Intel based modems Telit 3G Intel based modems require zero packet to be sent if out data size is equal to the endpoint max packet size. Signed-off-by: Daniele Palmas Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/class/cdc-acm.c | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index ed8c62b2d9d1..739f8960811a 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -1865,6 +1865,13 @@ static const struct usb_device_id acm_ids[] = { .driver_info = IGNORE_DEVICE, }, + { USB_DEVICE(0x1bc7, 0x0021), /* Telit 3G ACM only composition */ + .driver_info = SEND_ZERO_PACKET, + }, + { USB_DEVICE(0x1bc7, 0x0023), /* Telit 3G ACM + ECM composition */ + .driver_info = SEND_ZERO_PACKET, + }, + /* control interfaces without any protocol set */ { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, USB_CDC_PROTO_NONE) }, -- cgit From c5603d2fdb424849360fe7e3f8c1befc97571b8c Mon Sep 17 00:00:00 2001 From: Icenowy Zheng Date: Thu, 3 Jan 2019 11:26:17 +0800 Subject: USB: storage: don't insert sane sense for SPC3+ when bad sense specified Currently the code will set US_FL_SANE_SENSE flag unconditionally if device claims SPC3+, however we should allow US_FL_BAD_SENSE flag to prevent this behavior, because SMI SM3350 UFS-USB bridge controller, which claims SPC4, will show strange behavior with 96-byte sense (put the chip into a wrong state that cannot read/write anything). Check the presence of US_FL_BAD_SENSE when assuming US_FL_SANE_SENSE on SPC4+ devices. Signed-off-by: Icenowy Zheng Cc: stable Acked-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/usb/storage/scsiglue.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/storage/scsiglue.c b/drivers/usb/storage/scsiglue.c index fde2e71a6ade..a73ea495d5a7 100644 --- a/drivers/usb/storage/scsiglue.c +++ b/drivers/usb/storage/scsiglue.c @@ -235,8 +235,12 @@ static int slave_configure(struct scsi_device *sdev) if (!(us->fflags & US_FL_NEEDS_CAP16)) sdev->try_rc_10_first = 1; - /* assume SPC3 or latter devices support sense size > 18 */ - if (sdev->scsi_level > SCSI_SPC_2) + /* + * assume SPC3 or latter devices support sense size > 18 + * unless US_FL_BAD_SENSE quirk is specified. + */ + if (sdev->scsi_level > SCSI_SPC_2 && + !(us->fflags & US_FL_BAD_SENSE)) us->fflags |= US_FL_SANE_SENSE; /* -- cgit From 0a99cc4b8ee83885ab9f097a3737d1ab28455ac0 Mon Sep 17 00:00:00 2001 From: Icenowy Zheng Date: Thu, 3 Jan 2019 11:26:18 +0800 Subject: USB: storage: add quirk for SMI SM3350 The SMI SM3350 USB-UFS bridge controller cannot handle long sense request correctly and will make the chip refuse to do read/write when requested long sense. Add a bad sense quirk for it. Signed-off-by: Icenowy Zheng Cc: stable Acked-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/usb/storage/unusual_devs.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h index f7f83b21dc74..ea0d27a94afe 100644 --- a/drivers/usb/storage/unusual_devs.h +++ b/drivers/usb/storage/unusual_devs.h @@ -1265,6 +1265,18 @@ UNUSUAL_DEV( 0x090c, 0x1132, 0x0000, 0xffff, USB_SC_DEVICE, USB_PR_DEVICE, NULL, US_FL_FIX_CAPACITY ), +/* + * Reported by Icenowy Zheng + * The SMI SM3350 USB-UFS bridge controller will enter a wrong state + * that do not process read/write command if a long sense is requested, + * so force to use 18-byte sense. + */ +UNUSUAL_DEV( 0x090c, 0x3350, 0x0000, 0xffff, + "SMI", + "SM3350 UFS-to-USB-Mass-Storage bridge", + USB_SC_DEVICE, USB_PR_DEVICE, NULL, + US_FL_BAD_SENSE ), + /* * Reported by Paul Hartman * This card reader returns "Illegal Request, Logical Block Address -- cgit From ff2a8c532c14fd22fb26a36574d9ff199afbbe54 Mon Sep 17 00:00:00 2001 From: Saranya Gopal Date: Sun, 6 Jan 2019 08:14:02 +0530 Subject: usbcore: Select only first configuration for non-UAC3 compliant devices In most of the UAC1 and UAC2 audio devices, the first configuration is most often the best configuration. However, with recent patch to support UAC3 configuration, second configuration was unintentionally chosen for some of the UAC1/2 devices that had more than one configuration. This was because of the existing check after the audio config check which selected any config which had a non-vendor class. This patch fixes this issue. Fixes: f13912d3f014 ("usbcore: Select UAC3 configuration for audio if present") Reported-by: Con Kolivas Signed-off-by: Saranya Gopal Tested-by: Con Kolivas Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/generic.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/core/generic.c b/drivers/usb/core/generic.c index 356b05c82dbc..f713cecc1f41 100644 --- a/drivers/usb/core/generic.c +++ b/drivers/usb/core/generic.c @@ -143,9 +143,12 @@ int usb_choose_configuration(struct usb_device *udev) continue; } - if (i > 0 && desc && is_audio(desc) && is_uac3_config(desc)) { - best = c; - break; + if (i > 0 && desc && is_audio(desc)) { + if (is_uac3_config(desc)) { + best = c; + break; + } + continue; } /* From the remaining configs, choose the first one whose -- cgit From 3483254b89438e60f719937376c5e0ce2bc46761 Mon Sep 17 00:00:00 2001 From: Jack Stocker Date: Thu, 3 Jan 2019 21:56:53 +0000 Subject: USB: Add USB_QUIRK_DELAY_CTRL_MSG quirk for Corsair K70 RGB To match the Corsair Strafe RGB, the Corsair K70 RGB also requires USB_QUIRK_DELAY_CTRL_MSG to completely resolve boot connection issues discussed here: https://github.com/ckb-next/ckb-next/issues/42. Otherwise roughly 1 in 10 boots the keyboard will fail to be detected. Patch that applied delay control quirk for Corsair Strafe RGB: cb88a0588717 ("usb: quirks: add control message delay for 1b1c:1b20") Previous K70 RGB patch to add delay-init quirk: 7a1646d92257 ("Add delay-init quirk for Corsair K70 RGB keyboards") Signed-off-by: Jack Stocker Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/quirks.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c index 514c5214ddb2..8bc35d53408b 100644 --- a/drivers/usb/core/quirks.c +++ b/drivers/usb/core/quirks.c @@ -394,7 +394,8 @@ static const struct usb_device_id usb_quirk_list[] = { { USB_DEVICE(0x1a40, 0x0101), .driver_info = USB_QUIRK_HUB_SLOW_RESET }, /* Corsair K70 RGB */ - { USB_DEVICE(0x1b1c, 0x1b13), .driver_info = USB_QUIRK_DELAY_INIT }, + { USB_DEVICE(0x1b1c, 0x1b13), .driver_info = USB_QUIRK_DELAY_INIT | + USB_QUIRK_DELAY_CTRL_MSG }, /* Corsair Strafe */ { USB_DEVICE(0x1b1c, 0x1b15), .driver_info = USB_QUIRK_DELAY_INIT | -- cgit From f2fd71db12f8269a0384321c3c71a9312c66b415 Mon Sep 17 00:00:00 2001 From: Suwan Kim Date: Mon, 7 Jan 2019 23:21:11 +0900 Subject: usb: core: Simplify return value of usb_get_configuration() It is better to initialize the return value "result" to -ENOMEM than to 0. And because "result" takes the return value of usb_parse_configuration() which returns 0 for success, setting "result" to 0 at before and after of the for loop is unnecessary. Signed-off-by: Suwan Kim Acked-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/config.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/core/config.c b/drivers/usb/core/config.c index 7b5cb28ffb35..4a0945c04b4c 100644 --- a/drivers/usb/core/config.c +++ b/drivers/usb/core/config.c @@ -800,13 +800,12 @@ int usb_get_configuration(struct usb_device *dev) { struct device *ddev = &dev->dev; int ncfg = dev->descriptor.bNumConfigurations; - int result = 0; + int result = -ENOMEM; unsigned int cfgno, length; unsigned char *bigbuffer; struct usb_config_descriptor *desc; cfgno = 0; - result = -ENOMEM; if (ncfg > USB_MAXCONFIG) { dev_warn(ddev, "too many configurations: %d, " "using maximum allowed: %d\n", ncfg, USB_MAXCONFIG); @@ -832,7 +831,6 @@ int usb_get_configuration(struct usb_device *dev) if (!desc) goto err2; - result = 0; for (; cfgno < ncfg; cfgno++) { /* We grab just the first descriptor so we know how long * the whole configuration is */ @@ -889,7 +887,6 @@ int usb_get_configuration(struct usb_device *dev) goto err; } } - result = 0; err: kfree(desc); -- cgit From d1ab1b842073b148a61e65c747826379e9c3e08e Mon Sep 17 00:00:00 2001 From: Colin Ian King Date: Fri, 4 Jan 2019 17:43:49 +0000 Subject: usb: host: u132-hcd: fix a couple of indentation issues There are two statements that are indented incorrectly and need to be moved to a new line. Fix these. Signed-off-by: Colin Ian King Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/u132-hcd.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/host/u132-hcd.c b/drivers/usb/host/u132-hcd.c index 5b8a3d9530c4..934584f0a20a 100644 --- a/drivers/usb/host/u132-hcd.c +++ b/drivers/usb/host/u132-hcd.c @@ -2477,7 +2477,8 @@ static int u132_endp_urb_dequeue(struct u132 *u132, struct u132_endp *endp, spin_unlock_irqrestore(&endp->queue_lock.slock, irqs); kfree(urbq); - } urb->error_count = 0; + } + urb->error_count = 0; usb_hcd_giveback_urb(hcd, urb, status); return 0; } else if (list_empty(&endp->urb_more)) { @@ -2982,7 +2983,8 @@ static int u132_remove(struct platform_device *pdev) while (rings-- > 0) { struct u132_ring *ring = &u132->ring[rings]; u132_ring_cancel_work(u132, ring); - } while (endps-- > 0) { + } + while (endps-- > 0) { struct u132_endp *endp = u132->endp[endps]; if (endp) u132_endp_cancel_work(u132, endp); -- cgit From 8a1dbc8d91d3d1602282c7e6b4222c7759c916fa Mon Sep 17 00:00:00 2001 From: Chunfeng Yun Date: Wed, 2 Jan 2019 09:33:56 +0800 Subject: usb: devio: update max count of DPs per interval for ISOC The failure happened when I tried to send up to 96DPs per an interval for SSP ISOC transations by libusb, this is used to verify SSP ISOC function of USB3 GEN2 controller, so update it as 96DPs. (refer usb3.1r1.0 section 8.12.6 Isochronous Transactions) Signed-off-by: Chunfeng Yun Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/devio.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c index d65566341dd1..a12f2ce8df90 100644 --- a/drivers/usb/core/devio.c +++ b/drivers/usb/core/devio.c @@ -1564,12 +1564,10 @@ static int proc_do_submiturb(struct usb_dev_state *ps, struct usbdevfs_urb *uurb } for (totlen = u = 0; u < number_of_packets; u++) { /* - * arbitrary limit need for USB 3.0 - * bMaxBurst (0~15 allowed, 1~16 packets) - * bmAttributes (bit 1:0, mult 0~2, 1~3 packets) - * sizemax: 1024 * 16 * 3 = 49152 + * arbitrary limit need for USB 3.1 Gen2 + * sizemax: 96 DPs at SSP, 96 * 1024 = 98304 */ - if (isopkt[u].length > 49152) { + if (isopkt[u].length > 98304) { ret = -EINVAL; goto error; } -- cgit From 00553f322b7ac2a4e774e36fb633265f43651a7c Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Sun, 30 Dec 2018 16:53:08 +0100 Subject: usb: gadget: udc: reduce indentation Delete tab aligning a statement with the right hand side of a preceding assignment rather than the left hand side. Found with the help of Coccinelle. Signed-off-by: Julia Lawall Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/udc/snps_udc_core.c | 17 ++++++++--------- 1 file changed, 8 insertions(+), 9 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/udc/snps_udc_core.c b/drivers/usb/gadget/udc/snps_udc_core.c index d4da47f4f6f4..3fcded31405a 100644 --- a/drivers/usb/gadget/udc/snps_udc_core.c +++ b/drivers/usb/gadget/udc/snps_udc_core.c @@ -947,15 +947,14 @@ static int prep_dma(struct udc_ep *ep, struct udc_request *req, gfp_t gfp) UDC_DMA_STP_STS_BS_HOST_READY, UDC_DMA_STP_STS_BS); - - /* clear NAK by writing CNAK */ - if (ep->naking) { - tmp = readl(&ep->regs->ctl); - tmp |= AMD_BIT(UDC_EPCTL_CNAK); - writel(tmp, &ep->regs->ctl); - ep->naking = 0; - UDC_QUEUE_CNAK(ep, ep->num); - } + /* clear NAK by writing CNAK */ + if (ep->naking) { + tmp = readl(&ep->regs->ctl); + tmp |= AMD_BIT(UDC_EPCTL_CNAK); + writel(tmp, &ep->regs->ctl); + ep->naking = 0; + UDC_QUEUE_CNAK(ep, ep->num); + } } -- cgit From 750afb08ca71310fcf0c4e2cb1565c63b8235b60 Mon Sep 17 00:00:00 2001 From: Luis Chamberlain Date: Fri, 4 Jan 2019 09:23:09 +0100 Subject: cross-tree: phase out dma_zalloc_coherent() We already need to zero out memory for dma_alloc_coherent(), as such using dma_zalloc_coherent() is superflous. Phase it out. This change was generated with the following Coccinelle SmPL patch: @ replace_dma_zalloc_coherent @ expression dev, size, data, handle, flags; @@ -dma_zalloc_coherent(dev, size, handle, flags) +dma_alloc_coherent(dev, size, handle, flags) Suggested-by: Christoph Hellwig Signed-off-by: Luis Chamberlain [hch: re-ran the script on the latest tree] Signed-off-by: Christoph Hellwig --- drivers/usb/gadget/udc/bdc/bdc_core.c | 13 ++++++------- drivers/usb/host/uhci-hcd.c | 6 +++--- drivers/usb/host/xhci-mem.c | 8 ++++---- 3 files changed, 13 insertions(+), 14 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/udc/bdc/bdc_core.c b/drivers/usb/gadget/udc/bdc/bdc_core.c index 01b44e159623..ccbd1d34eb2a 100644 --- a/drivers/usb/gadget/udc/bdc/bdc_core.c +++ b/drivers/usb/gadget/udc/bdc/bdc_core.c @@ -172,8 +172,9 @@ static int scratchpad_setup(struct bdc *bdc) /* Refer to BDC spec, Table 4 for description of SPB */ sp_buff_size = 1 << (sp_buff_size + 5); dev_dbg(bdc->dev, "Allocating %d bytes for scratchpad\n", sp_buff_size); - bdc->scratchpad.buff = dma_zalloc_coherent(bdc->dev, sp_buff_size, - &bdc->scratchpad.sp_dma, GFP_KERNEL); + bdc->scratchpad.buff = dma_alloc_coherent(bdc->dev, sp_buff_size, + &bdc->scratchpad.sp_dma, + GFP_KERNEL); if (!bdc->scratchpad.buff) goto fail; @@ -202,11 +203,9 @@ static int setup_srr(struct bdc *bdc, int interrupter) bdc_writel(bdc->regs, BDC_SRRINT(0), BDC_SRR_RWS | BDC_SRR_RST); bdc->srr.dqp_index = 0; /* allocate the status report descriptors */ - bdc->srr.sr_bds = dma_zalloc_coherent( - bdc->dev, - NUM_SR_ENTRIES * sizeof(struct bdc_bd), - &bdc->srr.dma_addr, - GFP_KERNEL); + bdc->srr.sr_bds = dma_alloc_coherent(bdc->dev, + NUM_SR_ENTRIES * sizeof(struct bdc_bd), + &bdc->srr.dma_addr, GFP_KERNEL); if (!bdc->srr.sr_bds) return -ENOMEM; diff --git a/drivers/usb/host/uhci-hcd.c b/drivers/usb/host/uhci-hcd.c index 6218bfe54f52..98deb5f64268 100644 --- a/drivers/usb/host/uhci-hcd.c +++ b/drivers/usb/host/uhci-hcd.c @@ -596,9 +596,9 @@ static int uhci_start(struct usb_hcd *hcd) &uhci_debug_operations); #endif - uhci->frame = dma_zalloc_coherent(uhci_dev(uhci), - UHCI_NUMFRAMES * sizeof(*uhci->frame), - &uhci->frame_dma_handle, GFP_KERNEL); + uhci->frame = dma_alloc_coherent(uhci_dev(uhci), + UHCI_NUMFRAMES * sizeof(*uhci->frame), + &uhci->frame_dma_handle, GFP_KERNEL); if (!uhci->frame) { dev_err(uhci_dev(uhci), "unable to allocate consistent memory for frame list\n"); diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index 36a3eb8849f1..8067f178fa84 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -1672,8 +1672,8 @@ static int scratchpad_alloc(struct xhci_hcd *xhci, gfp_t flags) xhci->dcbaa->dev_context_ptrs[0] = cpu_to_le64(xhci->scratchpad->sp_dma); for (i = 0; i < num_sp; i++) { dma_addr_t dma; - void *buf = dma_zalloc_coherent(dev, xhci->page_size, &dma, - flags); + void *buf = dma_alloc_coherent(dev, xhci->page_size, &dma, + flags); if (!buf) goto fail_sp4; @@ -1799,8 +1799,8 @@ int xhci_alloc_erst(struct xhci_hcd *xhci, struct xhci_erst_entry *entry; size = sizeof(struct xhci_erst_entry) * evt_ring->num_segs; - erst->entries = dma_zalloc_coherent(xhci_to_hcd(xhci)->self.sysdev, - size, &erst->erst_dma_addr, flags); + erst->entries = dma_alloc_coherent(xhci_to_hcd(xhci)->self.sysdev, + size, &erst->erst_dma_addr, flags); if (!erst->entries) return -ENOMEM; -- cgit From 6756f4c375db11af7039985636bddde676615a94 Mon Sep 17 00:00:00 2001 From: "Gustavo A. R. Silva" Date: Tue, 8 Jan 2019 09:22:25 -0600 Subject: USB: core: urb: Use struct_size() in kmalloc() One of the more common cases of allocation size calculations is finding the size of a structure that has a zero-sized array at the end, along with memory for some number of elements for that array. For example: struct foo { int stuff; void *entry[]; }; instance = kmalloc(sizeof(struct foo) + sizeof(void *) * count, GFP_KERNEL); Instead of leaving these open-coded and prone to type mistakes, we can now use the new struct_size() helper: instance = kmalloc(struct_size(instance, entry, count), GFP_KERNEL); This code was detected with the help of Coccinelle. Signed-off-by: Gustavo A. R. Silva Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/urb.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/core/urb.c b/drivers/usb/core/urb.c index f51750bcd152..0eab79f82ce4 100644 --- a/drivers/usb/core/urb.c +++ b/drivers/usb/core/urb.c @@ -70,9 +70,8 @@ struct urb *usb_alloc_urb(int iso_packets, gfp_t mem_flags) { struct urb *urb; - urb = kmalloc(sizeof(struct urb) + - iso_packets * sizeof(struct usb_iso_packet_descriptor), - mem_flags); + urb = kmalloc(struct_size(urb, iso_frame_desc, iso_packets), + mem_flags); if (!urb) return NULL; usb_init_urb(urb); -- cgit From 01c10880d24291a96a4ab0da773e3c5ce4d12da8 Mon Sep 17 00:00:00 2001 From: Bo He Date: Mon, 14 Jan 2019 09:48:32 +0200 Subject: usb: dwc3: gadget: synchronize_irq dwc irq in suspend We see dwc3 endpoint stopped by unwanted irq during suspend resume test, which is caused dwc3 ep can't be started with error "No Resource". Here, add synchronize_irq before suspend to sync the pending IRQ handlers complete. Signed-off-by: Bo He Signed-off-by: Yu Wang Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/gadget.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 07bd31bb2f8a..851fd44d56ad 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -3379,6 +3379,8 @@ int dwc3_gadget_suspend(struct dwc3 *dwc) dwc3_disconnect_gadget(dwc); __dwc3_gadget_stop(dwc); + synchronize_irq(dwc->irq_gadget); + return 0; } -- cgit From bd6742249b9ca918565e4e3abaa06665e587f4b5 Mon Sep 17 00:00:00 2001 From: Jack Pham Date: Thu, 10 Jan 2019 12:39:55 -0800 Subject: usb: dwc3: gadget: Clear req->needs_extra_trb flag on cleanup OUT endpoint requests may somtimes have this flag set when preparing to be submitted to HW indicating that there is an additional TRB chained to the request for alignment purposes. If that request is removed before the controller can execute the transfer (e.g. ep_dequeue/ep_disable), the request will not go through the dwc3_gadget_ep_cleanup_completed_request() handler and will not have its needs_extra_trb flag cleared when dwc3_gadget_giveback() is called. This same request could be later requeued for a new transfer that does not require an extra TRB and if it is successfully completed, the cleanup and TRB reclamation will incorrectly process the additional TRB which belongs to the next request, and incorrectly advances the TRB dequeue pointer, thereby messing up calculation of the next requeust's actual/remaining count when it completes. The right thing to do here is to ensure that the flag is cleared before it is given back to the function driver. A good place to do that is in dwc3_gadget_del_and_unmap_request(). Fixes: c6267a51639b ("usb: dwc3: gadget: align transfers to wMaxPacketSize") Cc: stable@vger.kernel.org Signed-off-by: Jack Pham Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/gadget.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 851fd44d56ad..6e2b6d6369aa 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -177,6 +177,7 @@ static void dwc3_gadget_del_and_unmap_request(struct dwc3_ep *dep, req->started = false; list_del(&req->list); req->remaining = 0; + req->needs_extra_trb = false; if (req->request.status == -EINPROGRESS) req->request.status = status; -- cgit From 88b1bb1f3b88e0bf20b05d543a53a5b99bd7ceb6 Mon Sep 17 00:00:00 2001 From: Zeng Tao Date: Wed, 26 Dec 2018 19:22:00 +0800 Subject: usb: dwc3: gadget: Fix the uninitialized link_state when udc starts Currently the link_state is uninitialized and the default value is 0(U0) before the first time we start the udc, and after we start the udc then stop the udc, the link_state will be undefined. We may have the following warnings if we start the udc again with an undefined link_state: WARNING: CPU: 0 PID: 327 at drivers/usb/dwc3/gadget.c:294 dwc3_send_gadget_ep_cmd+0x304/0x308 dwc3 100e0000.hidwc3_0: wakeup failed --> -22 [...] Call Trace: [] (unwind_backtrace) from [] (show_stack+0x10/0x14) [] (show_stack) from [] (dump_stack+0x84/0x98) [] (dump_stack) from [] (__warn+0xe8/0x100) [] (__warn) from [](warn_slowpath_fmt+0x38/0x48) [] (warn_slowpath_fmt) from [](dwc3_send_gadget_ep_cmd+0x304/0x308) [] (dwc3_send_gadget_ep_cmd) from [](dwc3_ep0_start_trans+0x48/0xf4) [] (dwc3_ep0_start_trans) from [](dwc3_ep0_out_start+0x64/0x80) [] (dwc3_ep0_out_start) from [](__dwc3_gadget_start+0x1e0/0x278) [] (__dwc3_gadget_start) from [](dwc3_gadget_start+0x88/0x10c) [] (dwc3_gadget_start) from [](udc_bind_to_driver+0x88/0xbc) [] (udc_bind_to_driver) from [](usb_gadget_probe_driver+0xf8/0x140) [] (usb_gadget_probe_driver) from [](gadget_dev_desc_UDC_store+0xac/0xc4 [libcomposite]) [] (gadget_dev_desc_UDC_store [libcomposite]) from[] (configfs_write_file+0xd4/0x160) [] (configfs_write_file) from [] (__vfs_write+0x1c/0x114) [] (__vfs_write) from [] (vfs_write+0xa4/0x168) [] (vfs_write) from [] (SyS_write+0x3c/0x90) [] (SyS_write) from [] (ret_fast_syscall+0x0/0x3c) Signed-off-by: Zeng Tao Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/gadget.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 6e2b6d6369aa..bed2ff42780b 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -1985,6 +1985,7 @@ static int __dwc3_gadget_start(struct dwc3 *dwc) /* begin to receive SETUP packets */ dwc->ep0state = EP0_SETUP_PHASE; + dwc->link_state = DWC3_LINK_STATE_SS_DIS; dwc3_ep0_out_start(dwc); dwc3_gadget_enable_irq(dwc); -- cgit From df28169e1538e4a8bcd8b779b043e5aa6524545c Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Fri, 21 Dec 2018 23:42:52 +0300 Subject: usb: gadget: Potential NULL dereference on allocation error The source_sink_alloc_func() function is supposed to return error pointers on error. The function is called from usb_get_function() which doesn't check for NULL returns so it would result in an Oops. Of course, in the current kernel, small allocations always succeed so this doesn't affect runtime. Signed-off-by: Dan Carpenter Signed-off-by: Felipe Balbi --- drivers/usb/gadget/function/f_sourcesink.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/function/f_sourcesink.c b/drivers/usb/gadget/function/f_sourcesink.c index 9cdef108fb1b..ed68a4860b7d 100644 --- a/drivers/usb/gadget/function/f_sourcesink.c +++ b/drivers/usb/gadget/function/f_sourcesink.c @@ -838,7 +838,7 @@ static struct usb_function *source_sink_alloc_func( ss = kzalloc(sizeof(*ss), GFP_KERNEL); if (!ss) - return NULL; + return ERR_PTR(-ENOMEM); ss_opts = container_of(fi, struct f_ss_opts, func_inst); -- cgit From a8eda9fa1bd84065b75bfa81bf675a7af9055478 Mon Sep 17 00:00:00 2001 From: Karoly Pados Date: Mon, 14 Jan 2019 13:30:03 +0100 Subject: USB: serial: ftdi_sio: fix GPIO not working in autosuspend There is a bug in the current GPIO code for ftdi_sio: it failed to take USB autosuspend into account. If the device is in autosuspend, calls to usb_control_msg() fail with -EHOSTUNREACH. Because the standard value for autosuspend timeout is usually 2-5 seconds, this made it almost impossible to use the GPIOs on machines that have USB autosuspend enabled. This patch fixes the issue by acquiring a PM lock on the device for the duration of the USB transfers. Tested on an FT231X device. Signed-off-by: Karoly Pados [ johan: simplify code somewhat ] Fixes: ba93cc7da896 ("USB: serial: ftdi_sio: implement GPIO support for FT-X devices") Cc: stable # 4.20 Signed-off-by: Johan Hovold --- drivers/usb/serial/ftdi_sio.c | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c index 1ab2a6191013..77ef4c481f3c 100644 --- a/drivers/usb/serial/ftdi_sio.c +++ b/drivers/usb/serial/ftdi_sio.c @@ -1783,6 +1783,10 @@ static int ftdi_set_bitmode(struct usb_serial_port *port, u8 mode) int result; u16 val; + result = usb_autopm_get_interface(serial->interface); + if (result) + return result; + val = (mode << 8) | (priv->gpio_output << 4) | priv->gpio_value; result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), @@ -1795,6 +1799,8 @@ static int ftdi_set_bitmode(struct usb_serial_port *port, u8 mode) val, result); } + usb_autopm_put_interface(serial->interface); + return result; } @@ -1846,9 +1852,15 @@ static int ftdi_read_cbus_pins(struct usb_serial_port *port) unsigned char *buf; int result; + result = usb_autopm_get_interface(serial->interface); + if (result) + return result; + buf = kmalloc(1, GFP_KERNEL); - if (!buf) + if (!buf) { + usb_autopm_put_interface(serial->interface); return -ENOMEM; + } result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), @@ -1863,6 +1875,7 @@ static int ftdi_read_cbus_pins(struct usb_serial_port *port) } kfree(buf); + usb_autopm_put_interface(serial->interface); return result; } -- cgit From 87b6d2c56825c3119a0e64cc208ae6d795810a2e Mon Sep 17 00:00:00 2001 From: Minas Harutyunyan Date: Wed, 12 Dec 2018 16:44:32 +0400 Subject: usb: dwc2: gadget: Fix Remote Wakeup interrupt bit clearing To clear GINTSTS2_WKUP_ALERT_INT bit in GINTSTS2 register require to write 1. This bit is implemented as "Write to clear". Fixes: 187c5298a122 ("usb: dwc2: gadget: Add handler for WkupAlert interrupt") Signed-off-by: Minas Harutyunyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/gadget.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index 68ad75a7460d..55ef3cc2701b 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -261,7 +261,7 @@ static void dwc2_gadget_wkup_alert_handler(struct dwc2_hsotg *hsotg) if (gintsts2 & GINTSTS2_WKUP_ALERT_INT) { dev_dbg(hsotg->dev, "%s: Wkup_Alert_Int\n", __func__); - dwc2_clear_bit(hsotg, GINTSTS2, GINTSTS2_WKUP_ALERT_INT); + dwc2_set_bit(hsotg, GINTSTS2, GINTSTS2_WKUP_ALERT_INT); dwc2_set_bit(hsotg, DCTL, DCTL_RMTWKUPSIG); } } -- cgit From 4dcf9ddc9ad5ab649abafa98c5a4d54b1a33dabb Mon Sep 17 00:00:00 2001 From: Charles Yeh Date: Tue, 15 Jan 2019 23:13:56 +0800 Subject: USB: serial: pl2303: add new PID to support PL2303TB Add new PID to support PL2303TB (TYPE_HX) Signed-off-by: Charles Yeh Cc: stable Signed-off-by: Johan Hovold --- drivers/usb/serial/pl2303.c | 1 + drivers/usb/serial/pl2303.h | 2 ++ 2 files changed, 3 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c index 98e7a5df0f6d..bb3f9aa4a909 100644 --- a/drivers/usb/serial/pl2303.c +++ b/drivers/usb/serial/pl2303.c @@ -46,6 +46,7 @@ static const struct usb_device_id id_table[] = { { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_HCR331) }, { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_MOTOROLA) }, { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_ZTEK) }, + { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_TB) }, { USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID) }, { USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID_RSAQ5) }, { USB_DEVICE(ATEN_VENDOR_ID, ATEN_PRODUCT_ID), diff --git a/drivers/usb/serial/pl2303.h b/drivers/usb/serial/pl2303.h index 4e2554d55362..559941ca884d 100644 --- a/drivers/usb/serial/pl2303.h +++ b/drivers/usb/serial/pl2303.h @@ -8,6 +8,7 @@ #define PL2303_VENDOR_ID 0x067b #define PL2303_PRODUCT_ID 0x2303 +#define PL2303_PRODUCT_ID_TB 0x2304 #define PL2303_PRODUCT_ID_RSAQ2 0x04bb #define PL2303_PRODUCT_ID_DCU11 0x1234 #define PL2303_PRODUCT_ID_PHAROS 0xaaa0 @@ -20,6 +21,7 @@ #define PL2303_PRODUCT_ID_MOTOROLA 0x0307 #define PL2303_PRODUCT_ID_ZTEK 0xe1f1 + #define ATEN_VENDOR_ID 0x0557 #define ATEN_VENDOR_ID2 0x0547 #define ATEN_PRODUCT_ID 0x2008 -- cgit From fa5762fca80146153bff37ce5b74fa69b84904eb Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Thu, 17 Jan 2019 09:23:48 +0100 Subject: USB: usbip: delete README file The README file ni the drivers/usb/usbip/ directory is not needed anymore, so just delete it. Cc: Valentina Manea Signed-off-by: Greg Kroah-Hartman Acked-by: Shuah Khan Signed-off-by: Greg Kroah-Hartman --- drivers/usb/usbip/README | 7 ------- 1 file changed, 7 deletions(-) delete mode 100644 drivers/usb/usbip/README (limited to 'drivers/usb') diff --git a/drivers/usb/usbip/README b/drivers/usb/usbip/README deleted file mode 100644 index 41a2cf2e77a6..000000000000 --- a/drivers/usb/usbip/README +++ /dev/null @@ -1,7 +0,0 @@ -TODO: - - more discussion about the protocol - - testing - - review of the userspace interface - - document the protocol - -Please send patches for this code to Greg Kroah-Hartman -- cgit From 8ff396fe56f5593640a8ce7223cac33a2cda619e Mon Sep 17 00:00:00 2001 From: Peter Chen Date: Thu, 17 Jan 2019 09:24:20 +0000 Subject: usb: chipidea: fix static checker warning for NULL pointer During the static checker, "data->usbmisc_data" may be NULL. Fix it by adding this pointer judgement before using. Reported-by: Dan Carpenter Signed-off-by: Peter Chen Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/chipidea/ci_hdrc_imx.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/chipidea/ci_hdrc_imx.c b/drivers/usb/chipidea/ci_hdrc_imx.c index e81de9ca8729..9b45aa422e69 100644 --- a/drivers/usb/chipidea/ci_hdrc_imx.c +++ b/drivers/usb/chipidea/ci_hdrc_imx.c @@ -316,7 +316,8 @@ static int ci_hdrc_imx_probe(struct platform_device *pdev) if (IS_ERR(data->usbmisc_data)) return PTR_ERR(data->usbmisc_data); - if (of_usb_get_phy_mode(dev->of_node) == USBPHY_INTERFACE_MODE_HSIC) { + if ((of_usb_get_phy_mode(dev->of_node) == USBPHY_INTERFACE_MODE_HSIC) + && data->usbmisc_data) { pdata.flags |= CI_HDRC_IMX_IS_HSIC; data->usbmisc_data->hsic = 1; data->pinctrl = devm_pinctrl_get(dev); -- cgit From 91f7d2e89868fcac0e750a28230fdb1ad4512137 Mon Sep 17 00:00:00 2001 From: Christian Lamparter Date: Fri, 11 Jan 2019 17:29:45 +0100 Subject: USB: leds: fix regression in usbport led trigger The patch "usb: simplify usbport trigger" together with "leds: triggers: add device attribute support" caused an regression for the usbport trigger. it will no longer enumerate any active usb hub ports under the "ports" directory in the sysfs class directory, if the usb host drivers are fully initialized before the usbport trigger was loaded. The reason is that the usbport driver tries to register the sysfs entries during the activate() callback. And this will fail with -2 / ENOENT because the patch "leds: triggers: add device attribute support" made it so that the sysfs "ports" group was only being added after the activate() callback succeeded. This version of the patch reverts parts of the "usb: simplify usbport trigger" patch and restores usbport trigger's functionality. Fixes: 6f7b0bad8839 ("usb: simplify usbport trigger") Signed-off-by: Christian Lamparter Cc: stable Acked-by: Jacek Anaszewski Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/ledtrig-usbport.c | 17 ++++++++++------- 1 file changed, 10 insertions(+), 7 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/core/ledtrig-usbport.c b/drivers/usb/core/ledtrig-usbport.c index dc7f7fd71684..c12ac56606c3 100644 --- a/drivers/usb/core/ledtrig-usbport.c +++ b/drivers/usb/core/ledtrig-usbport.c @@ -119,11 +119,6 @@ static const struct attribute_group ports_group = { .attrs = ports_attrs, }; -static const struct attribute_group *ports_groups[] = { - &ports_group, - NULL -}; - /*************************************** * Adding & removing ports ***************************************/ @@ -307,6 +302,7 @@ static int usbport_trig_notify(struct notifier_block *nb, unsigned long action, static int usbport_trig_activate(struct led_classdev *led_cdev) { struct usbport_trig_data *usbport_data; + int err; usbport_data = kzalloc(sizeof(*usbport_data), GFP_KERNEL); if (!usbport_data) @@ -315,6 +311,9 @@ static int usbport_trig_activate(struct led_classdev *led_cdev) /* List of ports */ INIT_LIST_HEAD(&usbport_data->ports); + err = sysfs_create_group(&led_cdev->dev->kobj, &ports_group); + if (err) + goto err_free; usb_for_each_dev(usbport_data, usbport_trig_add_usb_dev_ports); usbport_trig_update_count(usbport_data); @@ -322,8 +321,11 @@ static int usbport_trig_activate(struct led_classdev *led_cdev) usbport_data->nb.notifier_call = usbport_trig_notify; led_set_trigger_data(led_cdev, usbport_data); usb_register_notify(&usbport_data->nb); - return 0; + +err_free: + kfree(usbport_data); + return err; } static void usbport_trig_deactivate(struct led_classdev *led_cdev) @@ -335,6 +337,8 @@ static void usbport_trig_deactivate(struct led_classdev *led_cdev) usbport_trig_remove_port(usbport_data, port); } + sysfs_remove_group(&led_cdev->dev->kobj, &ports_group); + usb_unregister_notify(&usbport_data->nb); kfree(usbport_data); @@ -344,7 +348,6 @@ static struct led_trigger usbport_led_trigger = { .name = "usbport", .activate = usbport_trig_activate, .deactivate = usbport_trig_deactivate, - .groups = ports_groups, }; static int __init usbport_trig_init(void) -- cgit From 8eb58994dd96da7055721c68e46b732febe671ae Mon Sep 17 00:00:00 2001 From: Nicolas Saenz Julienne Date: Tue, 8 Jan 2019 16:45:22 +0100 Subject: usb: hub: add retry routine after intr URB submit error The hub sends hot-plug events to the host trough it's interrupt URB. The driver takes care of completing the URB and re-submitting it. Completion errors are handled in the hub_event() work, yet submission errors are ignored, rendering the device unresponsive. All further events are lost. It is fairly hard to find this issue in the wild, since you have to time the USB hot-plug event with the URB submission failure. For instance it could be the system running out of memory or some malfunction in the USB controller driver. Nevertheless, it's pretty reasonable to think it'll happen sometime. One can trigger this issue using eBPF's function override feature (see BCC's inject.py script). This patch adds a retry routine to the event of a submission error. The HUB driver will try to re-submit the URB once every second until it's successful or the HUB is disconnected. As some USB subsystems already take care of this issue, the implementation was inspired from usbhid/hid_core.c's. Signed-off-by: Nicolas Saenz Julienne Reviewed-by: Oliver Neukum Acked-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/hub.c | 43 +++++++++++++++++++++++++++++++++++++------ drivers/usb/core/hub.h | 2 ++ 2 files changed, 39 insertions(+), 6 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 1d1e61e980f3..713ab85332f8 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -607,6 +607,36 @@ static int hub_port_status(struct usb_hub *hub, int port1, status, change, NULL); } +static void hub_resubmit_irq_urb(struct usb_hub *hub) +{ + unsigned long flags; + int status; + + spin_lock_irqsave(&hub->irq_urb_lock, flags); + + if (hub->quiescing) { + spin_unlock_irqrestore(&hub->irq_urb_lock, flags); + return; + } + + status = usb_submit_urb(hub->urb, GFP_ATOMIC); + if (status && status != -ENODEV && status != -EPERM && + status != -ESHUTDOWN) { + dev_err(hub->intfdev, "resubmit --> %d\n", status); + mod_timer(&hub->irq_urb_retry, jiffies + HZ); + } + + spin_unlock_irqrestore(&hub->irq_urb_lock, flags); +} + +static void hub_retry_irq_urb(struct timer_list *t) +{ + struct usb_hub *hub = from_timer(hub, t, irq_urb_retry); + + hub_resubmit_irq_urb(hub); +} + + static void kick_hub_wq(struct usb_hub *hub) { struct usb_interface *intf; @@ -709,12 +739,7 @@ static void hub_irq(struct urb *urb) kick_hub_wq(hub); resubmit: - if (hub->quiescing) - return; - - status = usb_submit_urb(hub->urb, GFP_ATOMIC); - if (status != 0 && status != -ENODEV && status != -EPERM) - dev_err(hub->intfdev, "resubmit --> %d\n", status); + hub_resubmit_irq_urb(hub); } /* USB 2.0 spec Section 11.24.2.3 */ @@ -1264,10 +1289,13 @@ enum hub_quiescing_type { static void hub_quiesce(struct usb_hub *hub, enum hub_quiescing_type type) { struct usb_device *hdev = hub->hdev; + unsigned long flags; int i; /* hub_wq and related activity won't re-trigger */ + spin_lock_irqsave(&hub->irq_urb_lock, flags); hub->quiescing = 1; + spin_unlock_irqrestore(&hub->irq_urb_lock, flags); if (type != HUB_SUSPEND) { /* Disconnect all the children */ @@ -1278,6 +1306,7 @@ static void hub_quiesce(struct usb_hub *hub, enum hub_quiescing_type type) } /* Stop hub_wq and related activity */ + del_timer_sync(&hub->irq_urb_retry); usb_kill_urb(hub->urb); if (hub->has_indicators) cancel_delayed_work_sync(&hub->leds); @@ -1810,6 +1839,8 @@ static int hub_probe(struct usb_interface *intf, const struct usb_device_id *id) INIT_DELAYED_WORK(&hub->leds, led_work); INIT_DELAYED_WORK(&hub->init_work, NULL); INIT_WORK(&hub->events, hub_event); + spin_lock_init(&hub->irq_urb_lock); + timer_setup(&hub->irq_urb_retry, hub_retry_irq_urb, 0); usb_get_intf(intf); usb_get_dev(hdev); diff --git a/drivers/usb/core/hub.h b/drivers/usb/core/hub.h index 4accfb63f7dc..a9e24e4b8df1 100644 --- a/drivers/usb/core/hub.h +++ b/drivers/usb/core/hub.h @@ -69,6 +69,8 @@ struct usb_hub { struct delayed_work leds; struct delayed_work init_work; struct work_struct events; + spinlock_t irq_urb_lock; + struct timer_list irq_urb_retry; struct usb_port **ports; }; -- cgit From da79ff6e586bd5aaa3bd9c73e56ae9d9183c3263 Mon Sep 17 00:00:00 2001 From: "Gustavo A. R. Silva" Date: Tue, 8 Jan 2019 09:40:46 -0600 Subject: xhci: Use struct_size() in kzalloc() One of the more common cases of allocation size calculations is finding the size of a structure that has a zero-sized array at the end, along with memory for some number of elements for that array. For example: struct foo { int stuff; void *entry[]; }; instance = kzalloc(sizeof(struct foo) + sizeof(void *) * count, GFP_KERNEL); Instead of leaving these open-coded and prone to type mistakes, we can now use the new struct_size() helper: instance = kzalloc(struct_size(instance, entry, count), GFP_KERNEL); This code was detected with the help of Coccinelle. Signed-off-by: Gustavo A. R. Silva Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index 005e65922608..7fa58c99f126 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -1455,8 +1455,7 @@ static int xhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, gfp_t mem_flag else num_tds = 1; - urb_priv = kzalloc(sizeof(struct urb_priv) + - num_tds * sizeof(struct xhci_td), mem_flags); + urb_priv = kzalloc(struct_size(urb_priv, td, num_tds), mem_flags); if (!urb_priv) return -ENOMEM; -- cgit From fecb28291404786b921c3f116aedb17a04fa4884 Mon Sep 17 00:00:00 2001 From: Nicolas Ferre Date: Wed, 16 Jan 2019 10:57:43 +0100 Subject: USB: host: ohci-at91: add sam9x60-sfr definition for ohci Add this SFR compatible definition for the sam9x60 SoC and manage its use in ohci-at91.c driver. Signed-off-by: Nicolas Ferre Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ohci-at91.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/host/ohci-at91.c b/drivers/usb/host/ohci-at91.c index ec6739ef3129..fc35a7993b7b 100644 --- a/drivers/usb/host/ohci-at91.c +++ b/drivers/usb/host/ohci-at91.c @@ -141,8 +141,11 @@ static struct regmap *at91_dt_syscon_sfr(void) struct regmap *regmap; regmap = syscon_regmap_lookup_by_compatible("atmel,sama5d2-sfr"); - if (IS_ERR(regmap)) - regmap = NULL; + if (IS_ERR(regmap)) { + regmap = syscon_regmap_lookup_by_compatible("microchip,sam9x60-sfr"); + if (IS_ERR(regmap)) + regmap = NULL; + } return regmap; } -- cgit From bb09779f879371fcf0b8f07d932451966cd3b3f3 Mon Sep 17 00:00:00 2001 From: Yoshihiro Shimoda Date: Thu, 17 Jan 2019 16:24:15 +0900 Subject: usb: renesas_usbhs: replace udelay() with usleep_range() According to Documentation/timers/timers-howto.txt, a driver should use usleep_range() instead of udelay() on NON-ATOMIC CONTEXT if "SLEEPING FOR ~USECS OR SMALL MSECS ( 10us - 20ms)". Since the .hardware_init() and .power_ctrl() will run on NON-ATOMIC CONTEXT, this patch replaces udelay() with usleep_range(). Signed-off-by: Yoshihiro Shimoda Reviewed-by: Simon Horman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/renesas_usbhs/rcar3.c | 2 +- drivers/usb/renesas_usbhs/rza.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/renesas_usbhs/rcar3.c b/drivers/usb/renesas_usbhs/rcar3.c index aa3820448286..5e730e9b40ef 100644 --- a/drivers/usb/renesas_usbhs/rcar3.c +++ b/drivers/usb/renesas_usbhs/rcar3.c @@ -59,7 +59,7 @@ static int usbhs_rcar3_power_ctrl(struct platform_device *pdev, if (enable) { usbhs_bset(priv, LPSTS, LPSTS_SUSPM, LPSTS_SUSPM); /* The controller on R-Car Gen3 needs to wait up to 45 usec */ - udelay(45); + usleep_range(45, 90); } else { usbhs_bset(priv, LPSTS, LPSTS_SUSPM, 0); } diff --git a/drivers/usb/renesas_usbhs/rza.c b/drivers/usb/renesas_usbhs/rza.c index 5b287257ec11..8c739bd24acd 100644 --- a/drivers/usb/renesas_usbhs/rza.c +++ b/drivers/usb/renesas_usbhs/rza.c @@ -35,7 +35,7 @@ static int usbhs_rza1_hardware_init(struct platform_device *pdev) /* Enable USB PLL (NOTE: ch0 controls both ch0 and ch1) */ usbhs_bset(priv, SYSCFG, UPLLE, UPLLE); - udelay(1000); + usleep_range(1000, 2000); usbhs_bset(priv, SUSPMODE, SUSPM, SUSPM); return 0; -- cgit From 02a50b8750464fd1b9b8a80e0539fe469741b370 Mon Sep 17 00:00:00 2001 From: Marco Felsch Date: Wed, 16 Jan 2019 15:20:37 +0100 Subject: usb: usb251xb: add usb data lane port swap feature The HW can swap the USB differential-pair (D+/D-) for each port separately. So the USB signals can be re-aligned with a misplaced USB connector on the PCB. Signed-off-by: Marco Felsch Reviewed-by: Richard Leitner Signed-off-by: Greg Kroah-Hartman --- drivers/usb/misc/usb251xb.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/misc/usb251xb.c b/drivers/usb/misc/usb251xb.c index a6efb9a72939..4d72b7d1d383 100644 --- a/drivers/usb/misc/usb251xb.c +++ b/drivers/usb/misc/usb251xb.c @@ -337,10 +337,12 @@ static int usb251xb_get_ofdata(struct usb251xb *hub, struct device *dev = hub->dev; struct device_node *np = dev->of_node; int len, err, i; - u32 property_u32 = 0; + u32 port, property_u32 = 0; const u32 *cproperty_u32; const char *cproperty_char; char str[USB251XB_STRING_BUFSIZE / 2]; + struct property *prop; + const __be32 *p; if (!np) { dev_err(dev, "failed to get ofdata\n"); @@ -539,6 +541,16 @@ static int usb251xb_get_ofdata(struct usb251xb *hub, (wchar_t *)hub->serial, USB251XB_STRING_BUFSIZE); + /* + * The datasheet documents the register as 'Port Swap' but in real the + * register controls the USB DP/DM signal swapping for each port. + */ + hub->port_swap = USB251XB_DEF_PORT_SWAP; + of_property_for_each_u32(np, "swap-dx-lanes", prop, p, port) { + if ((port >= 0) && (port <= data->port_cnt)) + hub->port_swap |= BIT(port); + } + /* The following parameters are currently not exposed to devicetree, but * may be as soon as needed. */ @@ -546,7 +558,6 @@ static int usb251xb_get_ofdata(struct usb251xb *hub, hub->boost_up = USB251XB_DEF_BOOST_UP; hub->boost_57 = USB251XB_DEF_BOOST_57; hub->boost_14 = USB251XB_DEF_BOOST_14; - hub->port_swap = USB251XB_DEF_PORT_SWAP; hub->port_map12 = USB251XB_DEF_PORT_MAP_12; hub->port_map34 = USB251XB_DEF_PORT_MAP_34; hub->port_map56 = USB251XB_DEF_PORT_MAP_56; -- cgit From 972a34e1c7c7ebf39a76f918166e6ee3a9f0aaa2 Mon Sep 17 00:00:00 2001 From: Ran Wang Date: Thu, 17 Jan 2019 09:10:50 +0000 Subject: usb: ehci: fsl: Update register accessing for arm/arm64 platforms arm/arm64's io.h doesn't define clrbits32() and clrsetbits_be32(), which causing compile failure on some Layerscape Platforms (such as LS1021A and LS2012A which also integrates FSL EHCI controller). So use ioread32be()/iowrite32be() instead to make it workable on both powerpc and arm. Signed-off-by: Ran Wang Acked-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ehci-fsl.c | 62 ++++++++++++++++++++++++++++++--------------- 1 file changed, 41 insertions(+), 21 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/host/ehci-fsl.c b/drivers/usb/host/ehci-fsl.c index 0a9fd2022acf..0a867d96c126 100644 --- a/drivers/usb/host/ehci-fsl.c +++ b/drivers/usb/host/ehci-fsl.c @@ -23,6 +23,7 @@ #include #include #include +#include #include "ehci.h" #include "ehci-fsl.h" @@ -50,6 +51,7 @@ static int fsl_ehci_drv_probe(struct platform_device *pdev) struct resource *res; int irq; int retval; + u32 tmp; pr_debug("initializing FSL-SOC USB Controller\n"); @@ -114,17 +116,22 @@ static int fsl_ehci_drv_probe(struct platform_device *pdev) } /* Enable USB controller, 83xx or 8536 */ - if (pdata->have_sysif_regs && pdata->controller_ver < FSL_USB_VER_1_6) - clrsetbits_be32(hcd->regs + FSL_SOC_USB_CTRL, - CONTROL_REGISTER_W1C_MASK, 0x4); - + if (pdata->have_sysif_regs && pdata->controller_ver < FSL_USB_VER_1_6) { + tmp = ioread32be(hcd->regs + FSL_SOC_USB_CTRL); + tmp &= ~CONTROL_REGISTER_W1C_MASK; + tmp |= 0x4; + iowrite32be(tmp, hcd->regs + FSL_SOC_USB_CTRL); + } /* * Enable UTMI phy and program PTS field in UTMI mode before asserting * controller reset for USB Controller version 2.5 */ if (pdata->has_fsl_erratum_a007792) { - clrsetbits_be32(hcd->regs + FSL_SOC_USB_CTRL, - CONTROL_REGISTER_W1C_MASK, CTRL_UTMI_PHY_EN); + tmp = ioread32be(hcd->regs + FSL_SOC_USB_CTRL); + tmp &= ~CONTROL_REGISTER_W1C_MASK; + tmp |= CTRL_UTMI_PHY_EN; + iowrite32be(tmp, hcd->regs + FSL_SOC_USB_CTRL); + writel(PORT_PTS_UTMI, hcd->regs + FSL_SOC_USB_PORTSC1); } @@ -174,7 +181,7 @@ static int ehci_fsl_setup_phy(struct usb_hcd *hcd, enum fsl_usb2_phy_modes phy_mode, unsigned int port_offset) { - u32 portsc; + u32 portsc, tmp; struct ehci_hcd *ehci = hcd_to_ehci(hcd); void __iomem *non_ehci = hcd->regs; struct device *dev = hcd->self.controller; @@ -192,11 +199,16 @@ static int ehci_fsl_setup_phy(struct usb_hcd *hcd, case FSL_USB2_PHY_ULPI: if (pdata->have_sysif_regs && pdata->controller_ver) { /* controller version 1.6 or above */ - clrbits32(non_ehci + FSL_SOC_USB_CTRL, - CONTROL_REGISTER_W1C_MASK | UTMI_PHY_EN); - clrsetbits_be32(non_ehci + FSL_SOC_USB_CTRL, - CONTROL_REGISTER_W1C_MASK, - ULPI_PHY_CLK_SEL | USB_CTRL_USB_EN); + /* turn off UTMI PHY first */ + tmp = ioread32be(non_ehci + FSL_SOC_USB_CTRL); + tmp &= ~(CONTROL_REGISTER_W1C_MASK | UTMI_PHY_EN); + iowrite32be(tmp, non_ehci + FSL_SOC_USB_CTRL); + + /* then turn on ULPI and enable USB controller */ + tmp = ioread32be(non_ehci + FSL_SOC_USB_CTRL); + tmp &= ~CONTROL_REGISTER_W1C_MASK; + tmp |= ULPI_PHY_CLK_SEL | USB_CTRL_USB_EN; + iowrite32be(tmp, non_ehci + FSL_SOC_USB_CTRL); } portsc |= PORT_PTS_ULPI; break; @@ -210,16 +222,21 @@ static int ehci_fsl_setup_phy(struct usb_hcd *hcd, case FSL_USB2_PHY_UTMI_DUAL: if (pdata->have_sysif_regs && pdata->controller_ver) { /* controller version 1.6 or above */ - clrsetbits_be32(non_ehci + FSL_SOC_USB_CTRL, - CONTROL_REGISTER_W1C_MASK, UTMI_PHY_EN); + tmp = ioread32be(non_ehci + FSL_SOC_USB_CTRL); + tmp &= ~CONTROL_REGISTER_W1C_MASK; + tmp |= UTMI_PHY_EN; + iowrite32be(tmp, non_ehci + FSL_SOC_USB_CTRL); + mdelay(FSL_UTMI_PHY_DLY); /* Delay for UTMI PHY CLK to become stable - 10ms*/ } /* enable UTMI PHY */ - if (pdata->have_sysif_regs) - clrsetbits_be32(non_ehci + FSL_SOC_USB_CTRL, - CONTROL_REGISTER_W1C_MASK, - CTRL_UTMI_PHY_EN); + if (pdata->have_sysif_regs) { + tmp = ioread32be(non_ehci + FSL_SOC_USB_CTRL); + tmp &= ~CONTROL_REGISTER_W1C_MASK; + tmp |= CTRL_UTMI_PHY_EN; + iowrite32be(tmp, non_ehci + FSL_SOC_USB_CTRL); + } portsc |= PORT_PTS_UTMI; break; case FSL_USB2_PHY_NONE: @@ -241,9 +258,12 @@ static int ehci_fsl_setup_phy(struct usb_hcd *hcd, ehci_writel(ehci, portsc, &ehci->regs->port_status[port_offset]); - if (phy_mode != FSL_USB2_PHY_ULPI && pdata->have_sysif_regs) - clrsetbits_be32(non_ehci + FSL_SOC_USB_CTRL, - CONTROL_REGISTER_W1C_MASK, USB_CTRL_USB_EN); + if (phy_mode != FSL_USB2_PHY_ULPI && pdata->have_sysif_regs) { + tmp = ioread32be(non_ehci + FSL_SOC_USB_CTRL); + tmp &= ~CONTROL_REGISTER_W1C_MASK; + tmp |= USB_CTRL_USB_EN; + iowrite32be(tmp, non_ehci + FSL_SOC_USB_CTRL); + } return 0; } -- cgit From 73855109a92c72e41c424aff15c23a289dde032b Mon Sep 17 00:00:00 2001 From: Ran Wang Date: Thu, 17 Jan 2019 09:10:53 +0000 Subject: usb: kconfig: remove dependency FSL_SOC for ehci fsl driver CONFIG_USB_EHCI_FSL is not dependent on FSL_SOC, it can be built on non-PPC platforms. Signed-off-by: Rajesh Bhagat Signed-off-by: Ran Wang Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/Kconfig | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig index 16758b12a5e9..11db5b2a30f2 100644 --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -179,8 +179,7 @@ config XPS_USB_HCD_XILINX devices only. config USB_EHCI_FSL - tristate "Support for Freescale PPC on-chip EHCI USB controller" - depends on FSL_SOC + tristate "Support for Freescale on-chip EHCI USB controller" select USB_EHCI_ROOT_HUB_TT ---help--- Variation of ARC USB block used in some Freescale chips. -- cgit From 5f620bb6439ea8f354cfe4c7d47887df9d3acaf0 Mon Sep 17 00:00:00 2001 From: Ran Wang Date: Thu, 17 Jan 2019 09:10:55 +0000 Subject: drivers: usb :fsl: Remove USB Errata checking code Remove USB errata checking code from driver. Applicability of erratum is retrieved by reading corresponding property in device tree. This property is written during device tree fixup. Besides, replace spaces with tabs to make code aligned. Signed-off-by: Ramneek Mehresh Signed-off-by: Nikhil Badola Signed-off-by: Yinbo Zhu Signed-off-by: Ran Wang Acked-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ehci-fsl.c | 7 +------ drivers/usb/host/fsl-mph-dr-of.c | 6 ++++++ 2 files changed, 7 insertions(+), 6 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/host/ehci-fsl.c b/drivers/usb/host/ehci-fsl.c index 0a867d96c126..e3d0c1c25160 100644 --- a/drivers/usb/host/ehci-fsl.c +++ b/drivers/usb/host/ehci-fsl.c @@ -304,14 +304,9 @@ static int ehci_fsl_usb_setup(struct ehci_hcd *ehci) return -EINVAL; if (pdata->operating_mode == FSL_USB2_MPH_HOST) { - unsigned int chip, rev, svr; - - svr = mfspr(SPRN_SVR); - chip = svr >> 16; - rev = (svr >> 4) & 0xf; /* Deal with USB Erratum #14 on MPC834x Rev 1.0 & 1.1 chips */ - if ((rev == 1) && (chip >= 0x8050) && (chip <= 0x8055)) + if (pdata->has_fsl_erratum_14 == 1) ehci->has_fsl_port_bug = 1; if (pdata->port_enables & FSL_USB2_PORT0_ENABLED) diff --git a/drivers/usb/host/fsl-mph-dr-of.c b/drivers/usb/host/fsl-mph-dr-of.c index 677f9d592109..4f8b8a08c914 100644 --- a/drivers/usb/host/fsl-mph-dr-of.c +++ b/drivers/usb/host/fsl-mph-dr-of.c @@ -225,6 +225,12 @@ static int fsl_usb2_mph_dr_of_probe(struct platform_device *ofdev) pdata->has_fsl_erratum_a005697 = of_property_read_bool(np, "fsl,usb_erratum-a005697"); + if (of_get_property(np, "fsl,usb_erratum_14", NULL)) + pdata->has_fsl_erratum_14 = 1; + else + pdata->has_fsl_erratum_14 = 0; + + /* * Determine whether phy_clk_valid needs to be checked * by reading property in device tree -- cgit From 7529b2574a7aaf902f1f8159fbc2a7caa74be559 Mon Sep 17 00:00:00 2001 From: Kai-Heng Feng Date: Sat, 12 Jan 2019 03:54:24 +0800 Subject: USB: Add new USB LPM helpers Use new helpers to make LPM enabling/disabling more clear. This is a preparation to subsequent patch. Signed-off-by: Kai-Heng Feng Cc: stable # after much soaking Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/driver.c | 12 +++++++++++- drivers/usb/core/hub.c | 12 ++++++------ drivers/usb/core/message.c | 2 +- drivers/usb/core/sysfs.c | 5 ++++- drivers/usb/core/usb.h | 10 ++++++++-- 5 files changed, 30 insertions(+), 11 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c index 53564386ed57..c276ffc5561f 100644 --- a/drivers/usb/core/driver.c +++ b/drivers/usb/core/driver.c @@ -1896,7 +1896,7 @@ int usb_runtime_idle(struct device *dev) return -EBUSY; } -int usb_set_usb2_hardware_lpm(struct usb_device *udev, int enable) +static int usb_set_usb2_hardware_lpm(struct usb_device *udev, int enable) { struct usb_hcd *hcd = bus_to_hcd(udev->bus); int ret = -EPERM; @@ -1913,6 +1913,16 @@ int usb_set_usb2_hardware_lpm(struct usb_device *udev, int enable) return ret; } +int usb_enable_usb2_hardware_lpm(struct usb_device *udev) +{ + return usb_set_usb2_hardware_lpm(udev, 1); +} + +int usb_disable_usb2_hardware_lpm(struct usb_device *udev) +{ + return usb_set_usb2_hardware_lpm(udev, 0); +} + #endif /* CONFIG_PM */ struct bus_type usb_bus_type = { diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 713ab85332f8..7337e942e9b0 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -3252,7 +3252,7 @@ int usb_port_suspend(struct usb_device *udev, pm_message_t msg) /* disable USB2 hardware LPM */ if (udev->usb2_hw_lpm_enabled == 1) - usb_set_usb2_hardware_lpm(udev, 0); + usb_disable_usb2_hardware_lpm(udev); if (usb_disable_ltm(udev)) { dev_err(&udev->dev, "Failed to disable LTM before suspend\n"); @@ -3291,7 +3291,7 @@ int usb_port_suspend(struct usb_device *udev, pm_message_t msg) err_ltm: /* Try to enable USB2 hardware LPM again */ if (udev->usb2_hw_lpm_capable == 1) - usb_set_usb2_hardware_lpm(udev, 1); + usb_enable_usb2_hardware_lpm(udev); if (udev->do_remote_wakeup) (void) usb_disable_remote_wakeup(udev); @@ -3575,7 +3575,7 @@ int usb_port_resume(struct usb_device *udev, pm_message_t msg) } else { /* Try to enable USB2 hardware LPM */ if (udev->usb2_hw_lpm_capable == 1) - usb_set_usb2_hardware_lpm(udev, 1); + usb_enable_usb2_hardware_lpm(udev); /* Try to enable USB3 LTM */ usb_enable_ltm(udev); @@ -4466,7 +4466,7 @@ static void hub_set_initial_usb2_lpm_policy(struct usb_device *udev) if ((udev->bos->ext_cap->bmAttributes & cpu_to_le32(USB_BESL_SUPPORT)) || connect_type == USB_PORT_CONNECT_TYPE_HARD_WIRED) { udev->usb2_hw_lpm_allowed = 1; - usb_set_usb2_hardware_lpm(udev, 1); + usb_enable_usb2_hardware_lpm(udev); } } @@ -5681,7 +5681,7 @@ static int usb_reset_and_verify_device(struct usb_device *udev) * It will be re-enabled by the enumeration process. */ if (udev->usb2_hw_lpm_enabled == 1) - usb_set_usb2_hardware_lpm(udev, 0); + usb_disable_usb2_hardware_lpm(udev); /* Disable LPM while we reset the device and reinstall the alt settings. * Device-initiated LPM, and system exit latency settings are cleared @@ -5784,7 +5784,7 @@ static int usb_reset_and_verify_device(struct usb_device *udev) done: /* Now that the alt settings are re-installed, enable LTM and LPM. */ - usb_set_usb2_hardware_lpm(udev, 1); + usb_enable_usb2_hardware_lpm(udev); usb_unlocked_enable_lpm(udev); usb_enable_ltm(udev); usb_release_bos_descriptor(udev); diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c index bfa5eda0cc26..35951aea7f50 100644 --- a/drivers/usb/core/message.c +++ b/drivers/usb/core/message.c @@ -1244,7 +1244,7 @@ void usb_disable_device(struct usb_device *dev, int skip_ep0) } if (dev->usb2_hw_lpm_enabled == 1) - usb_set_usb2_hardware_lpm(dev, 0); + usb_disable_usb2_hardware_lpm(dev); usb_unlocked_disable_lpm(dev); usb_disable_ltm(dev); diff --git a/drivers/usb/core/sysfs.c b/drivers/usb/core/sysfs.c index ea18284dfa9a..7e88fdfe3cf5 100644 --- a/drivers/usb/core/sysfs.c +++ b/drivers/usb/core/sysfs.c @@ -528,7 +528,10 @@ static ssize_t usb2_hardware_lpm_store(struct device *dev, if (!ret) { udev->usb2_hw_lpm_allowed = value; - ret = usb_set_usb2_hardware_lpm(udev, value); + if (value) + ret = usb_enable_usb2_hardware_lpm(udev); + else + ret = usb_disable_usb2_hardware_lpm(udev); } usb_unlock_device(udev); diff --git a/drivers/usb/core/usb.h b/drivers/usb/core/usb.h index 546a2219454b..d95a5358f73d 100644 --- a/drivers/usb/core/usb.h +++ b/drivers/usb/core/usb.h @@ -92,7 +92,8 @@ extern int usb_remote_wakeup(struct usb_device *dev); extern int usb_runtime_suspend(struct device *dev); extern int usb_runtime_resume(struct device *dev); extern int usb_runtime_idle(struct device *dev); -extern int usb_set_usb2_hardware_lpm(struct usb_device *udev, int enable); +extern int usb_enable_usb2_hardware_lpm(struct usb_device *udev); +extern int usb_disable_usb2_hardware_lpm(struct usb_device *udev); #else @@ -112,7 +113,12 @@ static inline int usb_autoresume_device(struct usb_device *udev) return 0; } -static inline int usb_set_usb2_hardware_lpm(struct usb_device *udev, int enable) +static inline int usb_enable_usb2_hardware_lpm(struct usb_device *udev) +{ + return 0; +} + +static inline int usb_disable_usb2_hardware_lpm(struct usb_device *udev) { return 0; } -- cgit From d7a6c0ce8d26412903c7981503bad9e1cc7c45d2 Mon Sep 17 00:00:00 2001 From: Kai-Heng Feng Date: Sat, 12 Jan 2019 03:54:25 +0800 Subject: USB: Consolidate LPM checks to avoid enabling LPM twice MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit USB Bluetooth controller QCA ROME (0cf3:e007) sometimes stops working after S3: [ 165.110742] Bluetooth: hci0: using NVM file: qca/nvm_usb_00000302.bin [ 168.432065] Bluetooth: hci0: Failed to send body at 4 of 1953 (-110) After some experiments, I found that disabling LPM can workaround the issue. On some platforms, the USB power is cut during S3, so the driver uses reset-resume to resume the device. During port resume, LPM gets enabled twice, by usb_reset_and_verify_device() and usb_port_resume(). Consolidate all checks into new LPM helpers to make sure LPM only gets enabled once. Fixes: de68bab4fa96 ("usb: Don't enable USB 2.0 Link PM by default.”) Signed-off-by: Kai-Heng Feng Cc: stable # after much soaking Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/driver.c | 11 ++++++++--- drivers/usb/core/hub.c | 12 ++++-------- drivers/usb/core/message.c | 3 +-- 3 files changed, 13 insertions(+), 13 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c index c276ffc5561f..8987cec9549d 100644 --- a/drivers/usb/core/driver.c +++ b/drivers/usb/core/driver.c @@ -1901,9 +1901,6 @@ static int usb_set_usb2_hardware_lpm(struct usb_device *udev, int enable) struct usb_hcd *hcd = bus_to_hcd(udev->bus); int ret = -EPERM; - if (enable && !udev->usb2_hw_lpm_allowed) - return 0; - if (hcd->driver->set_usb2_hw_lpm) { ret = hcd->driver->set_usb2_hw_lpm(hcd, udev, enable); if (!ret) @@ -1915,11 +1912,19 @@ static int usb_set_usb2_hardware_lpm(struct usb_device *udev, int enable) int usb_enable_usb2_hardware_lpm(struct usb_device *udev) { + if (!udev->usb2_hw_lpm_capable || + !udev->usb2_hw_lpm_allowed || + udev->usb2_hw_lpm_enabled) + return 0; + return usb_set_usb2_hardware_lpm(udev, 1); } int usb_disable_usb2_hardware_lpm(struct usb_device *udev) { + if (!udev->usb2_hw_lpm_enabled) + return 0; + return usb_set_usb2_hardware_lpm(udev, 0); } diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 7337e942e9b0..bb0830c72286 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -3251,8 +3251,7 @@ int usb_port_suspend(struct usb_device *udev, pm_message_t msg) } /* disable USB2 hardware LPM */ - if (udev->usb2_hw_lpm_enabled == 1) - usb_disable_usb2_hardware_lpm(udev); + usb_disable_usb2_hardware_lpm(udev); if (usb_disable_ltm(udev)) { dev_err(&udev->dev, "Failed to disable LTM before suspend\n"); @@ -3290,8 +3289,7 @@ int usb_port_suspend(struct usb_device *udev, pm_message_t msg) usb_enable_ltm(udev); err_ltm: /* Try to enable USB2 hardware LPM again */ - if (udev->usb2_hw_lpm_capable == 1) - usb_enable_usb2_hardware_lpm(udev); + usb_enable_usb2_hardware_lpm(udev); if (udev->do_remote_wakeup) (void) usb_disable_remote_wakeup(udev); @@ -3574,8 +3572,7 @@ int usb_port_resume(struct usb_device *udev, pm_message_t msg) hub_port_logical_disconnect(hub, port1); } else { /* Try to enable USB2 hardware LPM */ - if (udev->usb2_hw_lpm_capable == 1) - usb_enable_usb2_hardware_lpm(udev); + usb_enable_usb2_hardware_lpm(udev); /* Try to enable USB3 LTM */ usb_enable_ltm(udev); @@ -5680,8 +5677,7 @@ static int usb_reset_and_verify_device(struct usb_device *udev) /* Disable USB2 hardware LPM. * It will be re-enabled by the enumeration process. */ - if (udev->usb2_hw_lpm_enabled == 1) - usb_disable_usb2_hardware_lpm(udev); + usb_disable_usb2_hardware_lpm(udev); /* Disable LPM while we reset the device and reinstall the alt settings. * Device-initiated LPM, and system exit latency settings are cleared diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c index 35951aea7f50..4f33eb632a88 100644 --- a/drivers/usb/core/message.c +++ b/drivers/usb/core/message.c @@ -1243,8 +1243,7 @@ void usb_disable_device(struct usb_device *dev, int skip_ep0) dev->actconfig->interface[i] = NULL; } - if (dev->usb2_hw_lpm_enabled == 1) - usb_disable_usb2_hardware_lpm(dev); + usb_disable_usb2_hardware_lpm(dev); usb_unlocked_disable_lpm(dev); usb_disable_ltm(dev); -- cgit From 70d0ba4cf79a0e73485b22d955991c6f27257376 Mon Sep 17 00:00:00 2001 From: Lubomir Rintel Date: Mon, 14 Jan 2019 21:16:08 +0100 Subject: USB: EHCI: ehci-mv: add MODULE_DEVICE_TABLE This fixes autoloading the module by the OF compatible string. Fixes: 813e18b18a87 ("USB: EHCI: ehci-mv: add DT support") Cc: stable@vger.kernel.org Signed-off-by: Lubomir Rintel Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ehci-mv.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/usb') diff --git a/drivers/usb/host/ehci-mv.c b/drivers/usb/host/ehci-mv.c index f26109eafdbf..66ec1fdf9fe7 100644 --- a/drivers/usb/host/ehci-mv.c +++ b/drivers/usb/host/ehci-mv.c @@ -302,3 +302,4 @@ MODULE_AUTHOR("Chao Xie "); MODULE_AUTHOR("Neil Zhang "); MODULE_ALIAS("mv-ehci"); MODULE_LICENSE("GPL"); +MODULE_DEVICE_TABLE(of, ehci_mv_dt_ids); -- cgit From 527c1e567ead03ec21f6707e79c166ce680f17f7 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Thu, 17 Jan 2019 09:23:46 +0100 Subject: USB: serial: keyspan_usa: add proper SPDX lines for .h files The keyspan_usa??msg.h files are under a BSD-3 style license, so properly label them as such with a SPDX line at the top of the file. Signed-off-by: Greg Kroah-Hartman Signed-off-by: Johan Hovold --- drivers/usb/serial/keyspan_usa26msg.h | 1 + drivers/usb/serial/keyspan_usa28msg.h | 1 + drivers/usb/serial/keyspan_usa49msg.h | 1 + drivers/usb/serial/keyspan_usa67msg.h | 1 + drivers/usb/serial/keyspan_usa90msg.h | 1 + 5 files changed, 5 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/keyspan_usa26msg.h b/drivers/usb/serial/keyspan_usa26msg.h index 09e21e84fc4e..a68f1fb25b8a 100644 --- a/drivers/usb/serial/keyspan_usa26msg.h +++ b/drivers/usb/serial/keyspan_usa26msg.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: BSD-3-Clause */ /* usa26msg.h diff --git a/drivers/usb/serial/keyspan_usa28msg.h b/drivers/usb/serial/keyspan_usa28msg.h index dee454c4609a..a19f3fe5d98d 100644 --- a/drivers/usb/serial/keyspan_usa28msg.h +++ b/drivers/usb/serial/keyspan_usa28msg.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: BSD-3-Clause */ /* usa28msg.h diff --git a/drivers/usb/serial/keyspan_usa49msg.h b/drivers/usb/serial/keyspan_usa49msg.h index 163b2dea2ec5..8c3970fdd868 100644 --- a/drivers/usb/serial/keyspan_usa49msg.h +++ b/drivers/usb/serial/keyspan_usa49msg.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: BSD-3-Clause */ /* usa49msg.h diff --git a/drivers/usb/serial/keyspan_usa67msg.h b/drivers/usb/serial/keyspan_usa67msg.h index 20fa3e2f7187..dcf502fdbb44 100644 --- a/drivers/usb/serial/keyspan_usa67msg.h +++ b/drivers/usb/serial/keyspan_usa67msg.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: BSD-3-Clause */ /* usa67msg.h diff --git a/drivers/usb/serial/keyspan_usa90msg.h b/drivers/usb/serial/keyspan_usa90msg.h index 86708ecd8735..c4ca0f631d20 100644 --- a/drivers/usb/serial/keyspan_usa90msg.h +++ b/drivers/usb/serial/keyspan_usa90msg.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: BSD-3-Clause */ /* usa90msg.h -- cgit From 9812de4fb87439427c9b8cf1f3b839731f898afd Mon Sep 17 00:00:00 2001 From: Bharath Vedartham Date: Mon, 21 Jan 2019 16:34:55 +0530 Subject: USB: storage: karma: add whitespace after declarations fixed the checkpatch.pl warning: WARNING: Missing a blank line after declarations Added space after declarations to conform to coding style. Signed-off-by: Bharath Vedartham Signed-off-by: Greg Kroah-Hartman --- drivers/usb/storage/karma.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/storage/karma.c b/drivers/usb/storage/karma.c index edcf2be0e0eb..395cf8fb5870 100644 --- a/drivers/usb/storage/karma.c +++ b/drivers/usb/storage/karma.c @@ -167,6 +167,7 @@ static int rio_karma_transport(struct scsi_cmnd *srb, struct us_data *us) static void rio_karma_destructor(void *extra) { struct karma_data *data = (struct karma_data *) extra; + kfree(data->recv); } @@ -174,6 +175,7 @@ static int rio_karma_init(struct us_data *us) { int ret = 0; struct karma_data *data = kzalloc(sizeof(struct karma_data), GFP_NOIO); + if (!data) goto out; -- cgit From cae8dc3b685fb24f61f09b7197c6a383a66cff2c Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Thu, 17 Jan 2019 09:23:50 +0100 Subject: USB: add missing SPDX lines to Kconfig and Makefiles There are a few remaining drivers/usb/ files that do not have SPDX identifiers in them, all of these are either Kconfig or Makefiles. Add the correct GPL-2.0 identifier to them to make scanning tools happy. Signed-off-by: Greg Kroah-Hartman --- drivers/usb/Kconfig | 1 + drivers/usb/atm/Kconfig | 1 + drivers/usb/chipidea/Kconfig | 2 ++ drivers/usb/class/Kconfig | 1 + drivers/usb/core/Kconfig | 1 + drivers/usb/dwc2/Kconfig | 2 ++ drivers/usb/dwc3/Kconfig | 2 ++ drivers/usb/gadget/Kconfig | 1 + drivers/usb/gadget/legacy/Kconfig | 1 + drivers/usb/gadget/udc/Kconfig | 1 + drivers/usb/gadget/udc/bdc/Kconfig | 2 ++ drivers/usb/host/Kconfig | 1 + drivers/usb/image/Kconfig | 1 + drivers/usb/isp1760/Kconfig | 2 ++ drivers/usb/misc/Kconfig | 1 + drivers/usb/misc/sisusbvga/Kconfig | 1 + drivers/usb/mon/Kconfig | 1 + drivers/usb/mtu3/Kconfig | 2 ++ drivers/usb/musb/Kconfig | 1 + drivers/usb/phy/Kconfig | 1 + drivers/usb/roles/Kconfig | 2 ++ drivers/usb/roles/Makefile | 2 ++ drivers/usb/serial/Kconfig | 1 + drivers/usb/storage/Kconfig | 1 + drivers/usb/typec/Kconfig | 1 + drivers/usb/typec/altmodes/Kconfig | 1 + drivers/usb/typec/altmodes/Makefile | 2 ++ drivers/usb/typec/mux/Kconfig | 2 ++ drivers/usb/typec/tcpm/Kconfig | 2 ++ drivers/usb/typec/ucsi/Kconfig | 2 ++ drivers/usb/usbip/Kconfig | 2 ++ drivers/usb/wusbcore/Kconfig | 1 + 32 files changed, 45 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/Kconfig b/drivers/usb/Kconfig index 70e6c956c23c..e4b27413f528 100644 --- a/drivers/usb/Kconfig +++ b/drivers/usb/Kconfig @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 # # USB device configuration # diff --git a/drivers/usb/atm/Kconfig b/drivers/usb/atm/Kconfig index 0f922942a07a..989aaa3b080d 100644 --- a/drivers/usb/atm/Kconfig +++ b/drivers/usb/atm/Kconfig @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 # # USB/ATM DSL configuration # diff --git a/drivers/usb/chipidea/Kconfig b/drivers/usb/chipidea/Kconfig index ee34e9046f7e..eb37ebfcb123 100644 --- a/drivers/usb/chipidea/Kconfig +++ b/drivers/usb/chipidea/Kconfig @@ -1,3 +1,5 @@ +# SPDX-License-Identifier: GPL-2.0 + config USB_CHIPIDEA tristate "ChipIdea Highspeed Dual Role Controller" depends on ((USB_EHCI_HCD && USB_GADGET) || (USB_EHCI_HCD && !USB_GADGET) || (!USB_EHCI_HCD && USB_GADGET)) && HAS_DMA diff --git a/drivers/usb/class/Kconfig b/drivers/usb/class/Kconfig index 971385fe9abc..52f3a531a82f 100644 --- a/drivers/usb/class/Kconfig +++ b/drivers/usb/class/Kconfig @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 # # USB Class driver configuration # diff --git a/drivers/usb/core/Kconfig b/drivers/usb/core/Kconfig index 4d75d9a80001..4453e10b9dbb 100644 --- a/drivers/usb/core/Kconfig +++ b/drivers/usb/core/Kconfig @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 # # USB Core configuration # diff --git a/drivers/usb/dwc2/Kconfig b/drivers/usb/dwc2/Kconfig index b6a495e98fd8..68d095ae2865 100644 --- a/drivers/usb/dwc2/Kconfig +++ b/drivers/usb/dwc2/Kconfig @@ -1,3 +1,5 @@ +# SPDX-License-Identifier: GPL-2.0 + config USB_DWC2 tristate "DesignWare USB2 DRD Core Support" depends on HAS_DMA diff --git a/drivers/usb/dwc3/Kconfig b/drivers/usb/dwc3/Kconfig index 1a0404fda596..d7e4cab8cdd7 100644 --- a/drivers/usb/dwc3/Kconfig +++ b/drivers/usb/dwc3/Kconfig @@ -1,3 +1,5 @@ +# SPDX-License-Identifier: GPL-2.0 + config USB_DWC3 tristate "DesignWare USB3 DRD Core Support" depends on (USB || USB_GADGET) && HAS_DMA diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig index 31cce7805eb2..ec189d7855a0 100644 --- a/drivers/usb/gadget/Kconfig +++ b/drivers/usb/gadget/Kconfig @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 # # USB Gadget support on a system involves # (a) a peripheral controller, and diff --git a/drivers/usb/gadget/legacy/Kconfig b/drivers/usb/gadget/legacy/Kconfig index 784bf86dad4f..d7c9e4fca895 100644 --- a/drivers/usb/gadget/legacy/Kconfig +++ b/drivers/usb/gadget/legacy/Kconfig @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 # # USB Gadget support on a system involves # (a) a peripheral controller, and diff --git a/drivers/usb/gadget/udc/Kconfig b/drivers/usb/gadget/udc/Kconfig index 0a16cbd4e528..ef0259a950ba 100644 --- a/drivers/usb/gadget/udc/Kconfig +++ b/drivers/usb/gadget/udc/Kconfig @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 # # USB Gadget support on a system involves # (a) a peripheral controller, and diff --git a/drivers/usb/gadget/udc/bdc/Kconfig b/drivers/usb/gadget/udc/bdc/Kconfig index c74ac25dddcd..3e88c7670b2e 100644 --- a/drivers/usb/gadget/udc/bdc/Kconfig +++ b/drivers/usb/gadget/udc/bdc/Kconfig @@ -1,3 +1,5 @@ +# SPDX-License-Identifier: GPL-2.0 + config USB_BDC_UDC tristate "Broadcom USB3.0 device controller IP driver(BDC)" depends on USB_GADGET && HAS_DMA diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig index 11db5b2a30f2..29e8a56d8d82 100644 --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 # # USB Host Controller Drivers # diff --git a/drivers/usb/image/Kconfig b/drivers/usb/image/Kconfig index 320d368c8dac..26c75f309da9 100644 --- a/drivers/usb/image/Kconfig +++ b/drivers/usb/image/Kconfig @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 # # USB Imaging devices configuration # diff --git a/drivers/usb/isp1760/Kconfig b/drivers/usb/isp1760/Kconfig index c94b7d953399..b1022cc490a2 100644 --- a/drivers/usb/isp1760/Kconfig +++ b/drivers/usb/isp1760/Kconfig @@ -1,3 +1,5 @@ +# SPDX-License-Identifier: GPL-2.0 + config USB_ISP1760 tristate "NXP ISP 1760/1761 support" depends on USB || USB_GADGET diff --git a/drivers/usb/misc/Kconfig b/drivers/usb/misc/Kconfig index 68d2f2cd17dd..be04c117fe80 100644 --- a/drivers/usb/misc/Kconfig +++ b/drivers/usb/misc/Kconfig @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 # # USB Miscellaneous driver configuration # diff --git a/drivers/usb/misc/sisusbvga/Kconfig b/drivers/usb/misc/sisusbvga/Kconfig index 36bc28c884ad..9b632ab24f03 100644 --- a/drivers/usb/misc/sisusbvga/Kconfig +++ b/drivers/usb/misc/sisusbvga/Kconfig @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 config USB_SISUSBVGA tristate "USB 2.0 SVGA dongle support (Net2280/SiS315)" diff --git a/drivers/usb/mon/Kconfig b/drivers/usb/mon/Kconfig index 5c6ffa2a612e..48f1b2dadb24 100644 --- a/drivers/usb/mon/Kconfig +++ b/drivers/usb/mon/Kconfig @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 # # USB Monitor configuration # diff --git a/drivers/usb/mtu3/Kconfig b/drivers/usb/mtu3/Kconfig index 40bbf1f53337..bcc23486c4ed 100644 --- a/drivers/usb/mtu3/Kconfig +++ b/drivers/usb/mtu3/Kconfig @@ -1,3 +1,5 @@ +# SPDX-License-Identifier: GPL-2.0 +# # For MTK USB3.0 IP config USB_MTU3 diff --git a/drivers/usb/musb/Kconfig b/drivers/usb/musb/Kconfig index ad08895e78f9..38ff15da8ac8 100644 --- a/drivers/usb/musb/Kconfig +++ b/drivers/usb/musb/Kconfig @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 # # USB Dual Role (OTG-ready) Controller Drivers # for silicon based on Mentor Graphics INVENTRA designs diff --git a/drivers/usb/phy/Kconfig b/drivers/usb/phy/Kconfig index d7312eed6088..8efeb9699679 100644 --- a/drivers/usb/phy/Kconfig +++ b/drivers/usb/phy/Kconfig @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 # # Physical Layer USB driver configuration # diff --git a/drivers/usb/roles/Kconfig b/drivers/usb/roles/Kconfig index e4194ac94510..f8b31aa67526 100644 --- a/drivers/usb/roles/Kconfig +++ b/drivers/usb/roles/Kconfig @@ -1,3 +1,5 @@ +# SPDX-License-Identifier: GPL-2.0 + config USB_ROLE_SWITCH tristate "USB Role Switch Support" help diff --git a/drivers/usb/roles/Makefile b/drivers/usb/roles/Makefile index c02873206fc1..757a7d2797eb 100644 --- a/drivers/usb/roles/Makefile +++ b/drivers/usb/roles/Makefile @@ -1,3 +1,5 @@ +# SPDX-License-Identifier: GPL-2.0 + obj-$(CONFIG_USB_ROLE_SWITCH) += roles.o roles-y := class.o obj-$(CONFIG_USB_ROLES_INTEL_XHCI) += intel-xhci-usb-role-switch.o diff --git a/drivers/usb/serial/Kconfig b/drivers/usb/serial/Kconfig index 533f127c30ad..7d031911d04e 100644 --- a/drivers/usb/serial/Kconfig +++ b/drivers/usb/serial/Kconfig @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 # # USB Serial device configuration # diff --git a/drivers/usb/storage/Kconfig b/drivers/usb/storage/Kconfig index 6fd427284b12..59aad38b490a 100644 --- a/drivers/usb/storage/Kconfig +++ b/drivers/usb/storage/Kconfig @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 # # USB Storage driver configuration # diff --git a/drivers/usb/typec/Kconfig b/drivers/usb/typec/Kconfig index 30a847c2089d..89d9193bd1cf 100644 --- a/drivers/usb/typec/Kconfig +++ b/drivers/usb/typec/Kconfig @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 menuconfig TYPEC tristate "USB Type-C Support" diff --git a/drivers/usb/typec/altmodes/Kconfig b/drivers/usb/typec/altmodes/Kconfig index efef2a64bc51..ef2226eb7a33 100644 --- a/drivers/usb/typec/altmodes/Kconfig +++ b/drivers/usb/typec/altmodes/Kconfig @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 menu "USB Type-C Alternate Mode drivers" diff --git a/drivers/usb/typec/altmodes/Makefile b/drivers/usb/typec/altmodes/Makefile index 5caf094ef71a..eda8456f1c92 100644 --- a/drivers/usb/typec/altmodes/Makefile +++ b/drivers/usb/typec/altmodes/Makefile @@ -1,2 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 + obj-$(CONFIG_TYPEC_DP_ALTMODE) += typec_displayport.o typec_displayport-y := displayport.o diff --git a/drivers/usb/typec/mux/Kconfig b/drivers/usb/typec/mux/Kconfig index 9a954d2b8d8f..01ed0d5e10e8 100644 --- a/drivers/usb/typec/mux/Kconfig +++ b/drivers/usb/typec/mux/Kconfig @@ -1,3 +1,5 @@ +# SPDX-License-Identifier: GPL-2.0 + menu "USB Type-C Multiplexer/DeMultiplexer Switch support" config TYPEC_MUX_PI3USB30532 diff --git a/drivers/usb/typec/tcpm/Kconfig b/drivers/usb/typec/tcpm/Kconfig index f03ea8a61768..72481bbb2af3 100644 --- a/drivers/usb/typec/tcpm/Kconfig +++ b/drivers/usb/typec/tcpm/Kconfig @@ -1,3 +1,5 @@ +# SPDX-License-Identifier: GPL-2.0 + config TYPEC_TCPM tristate "USB Type-C Port Controller Manager" depends on USB diff --git a/drivers/usb/typec/ucsi/Kconfig b/drivers/usb/typec/ucsi/Kconfig index 78118883f96c..15c2ac7db02d 100644 --- a/drivers/usb/typec/ucsi/Kconfig +++ b/drivers/usb/typec/ucsi/Kconfig @@ -1,3 +1,5 @@ +# SPDX-License-Identifier: GPL-2.0 + config TYPEC_UCSI tristate "USB Type-C Connector System Software Interface driver" depends on !CPU_BIG_ENDIAN diff --git a/drivers/usb/usbip/Kconfig b/drivers/usb/usbip/Kconfig index a20b65cb6678..2f86b28fa3da 100644 --- a/drivers/usb/usbip/Kconfig +++ b/drivers/usb/usbip/Kconfig @@ -1,3 +1,5 @@ +# SPDX-License-Identifier: GPL-2.0 + config USBIP_CORE tristate "USB/IP support" depends on NET diff --git a/drivers/usb/wusbcore/Kconfig b/drivers/usb/wusbcore/Kconfig index 348de1d6726e..12e89189ca7d 100644 --- a/drivers/usb/wusbcore/Kconfig +++ b/drivers/usb/wusbcore/Kconfig @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 # # Wireless USB Core configuration # -- cgit From 0b8c0cbc17b90a7c6979c12f8579989724625655 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Thu, 17 Jan 2019 09:23:49 +0100 Subject: USB: remove README file This file is really really old, and doesn't make any sense to keep around anymore, so just drop it. Signed-off-by: Greg Kroah-Hartman --- drivers/usb/README | 54 ------------------------------------------------------ 1 file changed, 54 deletions(-) delete mode 100644 drivers/usb/README (limited to 'drivers/usb') diff --git a/drivers/usb/README b/drivers/usb/README deleted file mode 100644 index 2144e7dbfa41..000000000000 --- a/drivers/usb/README +++ /dev/null @@ -1,54 +0,0 @@ -To understand all the Linux-USB framework, you'll use these resources: - - * This source code. This is necessarily an evolving work, and - includes kerneldoc that should help you get a current overview. - ("make pdfdocs", and then look at "usb.pdf" for host side and - "gadget.pdf" for peripheral side.) Also, Documentation/usb has - more information. - - * The USB 2.0 specification (from www.usb.org), with supplements - such as those for USB OTG and the various device classes. - The USB specification has a good overview chapter, and USB - peripherals conform to the widely known "Chapter 9". - - * Chip specifications for USB controllers. Examples include - host controllers (on PCs, servers, and more); peripheral - controllers (in devices with Linux firmware, like printers or - cell phones); and hard-wired peripherals like Ethernet adapters. - - * Specifications for other protocols implemented by USB peripheral - functions. Some are vendor-specific; others are vendor-neutral - but just standardized outside of the www.usb.org team. - -Here is a list of what each subdirectory here is, and what is contained in -them. - -core/ - This is for the core USB host code, including the - usbfs files and the hub class driver ("hub_wq"). - -host/ - This is for USB host controller drivers. This - includes UHCI, OHCI, EHCI, and others that might - be used with more specialized "embedded" systems. - -gadget/ - This is for USB peripheral controller drivers and - the various gadget drivers which talk to them. - - -Individual USB driver directories. A new driver should be added to the -first subdirectory in the list below that it fits into. - -image/ - This is for still image drivers, like scanners or - digital cameras. -../input/ - This is for any driver that uses the input subsystem, - like keyboard, mice, touchscreens, tablets, etc. -../media/ - This is for multimedia drivers, like video cameras, - radios, and any other drivers that talk to the v4l - subsystem. -../net/ - This is for network drivers. -serial/ - This is for USB to serial drivers. -storage/ - This is for USB mass-storage drivers. -class/ - This is for all USB device drivers that do not fit - into any of the above categories, and work for a range - of USB Class specified devices. -misc/ - This is for all USB device drivers that do not fit - into any of the above categories. -- cgit From e36f8b7b7d2a93622c2e17a738e0fda59f64a71c Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Thu, 17 Jan 2019 09:23:47 +0100 Subject: USB: host: whci: rename Kbuild file We have been using Makefile for well over a decade now, use that name instead of Kbuild. Also, while moving the file, add the proper SPDX identifier at the top of it. Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/whci/Kbuild | 12 ------------ drivers/usb/host/whci/Makefile | 14 ++++++++++++++ 2 files changed, 14 insertions(+), 12 deletions(-) delete mode 100644 drivers/usb/host/whci/Kbuild create mode 100644 drivers/usb/host/whci/Makefile (limited to 'drivers/usb') diff --git a/drivers/usb/host/whci/Kbuild b/drivers/usb/host/whci/Kbuild deleted file mode 100644 index 26df0138079e..000000000000 --- a/drivers/usb/host/whci/Kbuild +++ /dev/null @@ -1,12 +0,0 @@ -obj-$(CONFIG_USB_WHCI_HCD) += whci-hcd.o - -whci-hcd-y := \ - asl.o \ - debug.o \ - hcd.o \ - hw.o \ - init.o \ - int.o \ - pzl.o \ - qset.o \ - wusb.o diff --git a/drivers/usb/host/whci/Makefile b/drivers/usb/host/whci/Makefile new file mode 100644 index 000000000000..859d20079df6 --- /dev/null +++ b/drivers/usb/host/whci/Makefile @@ -0,0 +1,14 @@ +# SPDX-License-Identifier: GPL-2.0 + +obj-$(CONFIG_USB_WHCI_HCD) += whci-hcd.o + +whci-hcd-y := \ + asl.o \ + debug.o \ + hcd.o \ + hw.o \ + init.o \ + int.o \ + pzl.o \ + qset.o \ + wusb.o -- cgit From bcfcd409d4dbb886d78c61423ce3034c94324c32 Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Thu, 24 Jan 2019 15:28:11 -0800 Subject: usb: split code locating ACPI companion into port and device In preparation for handling embedded USB devices let's split usb_acpi_find_companion() into usb_acpi_find_companion_for_device() and usb_acpi_find_companion_for_port(). Signed-off-by: Dmitry Torokhov Signed-off-by: Rajat Jain Acked-by: Greg Kroah-Hartman Tested-by: Sukumar Ghorai Signed-off-by: Marcel Holtmann --- drivers/usb/core/usb-acpi.c | 133 ++++++++++++++++++++++++-------------------- 1 file changed, 72 insertions(+), 61 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/core/usb-acpi.c b/drivers/usb/core/usb-acpi.c index e221861b3187..8ff73c83e8e8 100644 --- a/drivers/usb/core/usb-acpi.c +++ b/drivers/usb/core/usb-acpi.c @@ -139,12 +139,79 @@ static struct acpi_device *usb_acpi_find_port(struct acpi_device *parent, return acpi_find_child_device(parent, raw, false); } -static struct acpi_device *usb_acpi_find_companion(struct device *dev) +static struct acpi_device * +usb_acpi_get_companion_for_port(struct usb_port *port_dev) { struct usb_device *udev; struct acpi_device *adev; acpi_handle *parent_handle; + int port1; + + /* Get the struct usb_device point of port's hub */ + udev = to_usb_device(port_dev->dev.parent->parent); + + /* + * The root hub ports' parent is the root hub. The non-root-hub + * ports' parent is the parent hub port which the hub is + * connected to. + */ + if (!udev->parent) { + adev = ACPI_COMPANION(&udev->dev); + port1 = usb_hcd_find_raw_port_number(bus_to_hcd(udev->bus), + port_dev->portnum); + } else { + parent_handle = usb_get_hub_port_acpi_handle(udev->parent, + udev->portnum); + if (!parent_handle) + return NULL; + + acpi_bus_get_device(parent_handle, &adev); + port1 = port_dev->portnum; + } + + return usb_acpi_find_port(adev, port1); +} + +static struct acpi_device * +usb_acpi_find_companion_for_port(struct usb_port *port_dev) +{ + struct acpi_device *adev; + struct acpi_pld_info *pld; + acpi_handle *handle; + acpi_status status; + + adev = usb_acpi_get_companion_for_port(port_dev); + if (!adev) + return NULL; + + handle = adev->handle; + status = acpi_get_physical_device_location(handle, &pld); + if (!ACPI_FAILURE(status) && pld) { + port_dev->location = USB_ACPI_LOCATION_VALID + | pld->group_token << 8 | pld->group_position; + port_dev->connect_type = usb_acpi_get_connect_type(handle, pld); + ACPI_FREE(pld); + } + return adev; +} + +static struct acpi_device * +usb_acpi_find_companion_for_device(struct usb_device *udev) +{ + struct acpi_device *adev; + + if (!udev->parent) + return NULL; + + /* root hub is only child (_ADR=0) under its parent, the HC */ + adev = ACPI_COMPANION(udev->dev.parent); + return acpi_find_child_device(adev, 0, false); +} + + +static struct acpi_device *usb_acpi_find_companion(struct device *dev) +{ /* * In the ACPI DSDT table, only usb root hub and usb ports are * acpi device nodes. The hierarchy like following. @@ -158,66 +225,10 @@ static struct acpi_device *usb_acpi_find_companion(struct device *dev) * So all binding process is divided into two parts. binding * root hub and usb ports. */ - if (is_usb_device(dev)) { - udev = to_usb_device(dev); - if (udev->parent) - return NULL; - - /* root hub is only child (_ADR=0) under its parent, the HC */ - adev = ACPI_COMPANION(dev->parent); - return acpi_find_child_device(adev, 0, false); - } else if (is_usb_port(dev)) { - struct usb_port *port_dev = to_usb_port(dev); - int port1 = port_dev->portnum; - struct acpi_pld_info *pld; - acpi_handle *handle; - acpi_status status; - - /* Get the struct usb_device point of port's hub */ - udev = to_usb_device(dev->parent->parent); - - /* - * The root hub ports' parent is the root hub. The non-root-hub - * ports' parent is the parent hub port which the hub is - * connected to. - */ - if (!udev->parent) { - struct usb_hcd *hcd = bus_to_hcd(udev->bus); - int raw; - - raw = usb_hcd_find_raw_port_number(hcd, port1); - - adev = usb_acpi_find_port(ACPI_COMPANION(&udev->dev), - raw); - - if (!adev) - return NULL; - } else { - parent_handle = - usb_get_hub_port_acpi_handle(udev->parent, - udev->portnum); - if (!parent_handle) - return NULL; - - acpi_bus_get_device(parent_handle, &adev); - - adev = usb_acpi_find_port(adev, port1); - - if (!adev) - return NULL; - } - handle = adev->handle; - status = acpi_get_physical_device_location(handle, &pld); - if (ACPI_FAILURE(status) || !pld) - return adev; - - port_dev->location = USB_ACPI_LOCATION_VALID - | pld->group_token << 8 | pld->group_position; - port_dev->connect_type = usb_acpi_get_connect_type(handle, pld); - ACPI_FREE(pld); - - return adev; - } + if (is_usb_device(dev)) + return usb_acpi_find_companion_for_device(to_usb_device(dev)); + else if (is_usb_port(dev)) + return usb_acpi_find_companion_for_port(to_usb_port(dev)); return NULL; } -- cgit From b4dfbbd1803d81b51bf2c47b182a7029b476d8e2 Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Thu, 24 Jan 2019 15:28:12 -0800 Subject: usb: assign ACPI companions for embedded USB devices USB devices permanently connected to USB ports may be described in ACPI tables and share ACPI devices with ports they are connected to. See [1] for details. This will allow us to describe sideband resources for devices, such as, for example, hard reset line for BT USB controllers. [1] https://docs.microsoft.com/en-us/windows-hardware/drivers/bringup/other-acpi-namespace-objects#acpi-namespace-hierarchy-and-adr-for-embedded-usb-devices Signed-off-by: Dmitry Torokhov Signed-off-by: Rajat Jain (changed how we get the usb_port) Acked-by: Greg Kroah-Hartman Tested-by: Sukumar Ghorai Signed-off-by: Marcel Holtmann --- drivers/usb/core/usb-acpi.c | 44 +++++++++++++++++++++++++++++++++++--------- 1 file changed, 35 insertions(+), 9 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/core/usb-acpi.c b/drivers/usb/core/usb-acpi.c index 8ff73c83e8e8..9043d7242d67 100644 --- a/drivers/usb/core/usb-acpi.c +++ b/drivers/usb/core/usb-acpi.c @@ -200,30 +200,56 @@ static struct acpi_device * usb_acpi_find_companion_for_device(struct usb_device *udev) { struct acpi_device *adev; + struct usb_port *port_dev; + struct usb_hub *hub; + + if (!udev->parent) { + /* root hub is only child (_ADR=0) under its parent, the HC */ + adev = ACPI_COMPANION(udev->dev.parent); + return acpi_find_child_device(adev, 0, false); + } - if (!udev->parent) + hub = usb_hub_to_struct_hub(udev->parent); + if (!hub) return NULL; - /* root hub is only child (_ADR=0) under its parent, the HC */ - adev = ACPI_COMPANION(udev->dev.parent); - return acpi_find_child_device(adev, 0, false); + /* + * This is an embedded USB device connected to a port and such + * devices share port's ACPI companion. + */ + port_dev = hub->ports[udev->portnum - 1]; + return usb_acpi_get_companion_for_port(port_dev); } - static struct acpi_device *usb_acpi_find_companion(struct device *dev) { /* - * In the ACPI DSDT table, only usb root hub and usb ports are - * acpi device nodes. The hierarchy like following. + * The USB hierarchy like following: + * * Device (EHC1) * Device (HUBN) * Device (PR01) * Device (PR11) * Device (PR12) + * Device (FN12) + * Device (FN13) * Device (PR13) * ... - * So all binding process is divided into two parts. binding - * root hub and usb ports. + * where HUBN is root hub, and PRNN are USB ports and devices + * connected to them, and FNNN are individualk functions for + * connected composite USB devices. PRNN and FNNN may contain + * _CRS and other methods describing sideband resources for + * the connected device. + * + * On the kernel side both root hub and embedded USB devices are + * represented as instances of usb_device structure, and ports + * are represented as usb_port structures, so the whole process + * is split into 2 parts: finding companions for devices and + * finding companions for ports. + * + * Note that we do not handle individual functions of composite + * devices yet, for that we would need to assign companions to + * devices corresponding to USB interfaces. */ if (is_usb_device(dev)) return usb_acpi_find_companion_for_device(to_usb_device(dev)); -- cgit From 04389af74d9129703c22609315ee7648d831dca0 Mon Sep 17 00:00:00 2001 From: YueHaibing Date: Wed, 23 Jan 2019 22:16:56 +0800 Subject: usb: ftdi-elan: remove a unnecessary variable 'empty_packets' The variable 'empty_packets' does not used in any other places except for self increment, so it can be removed. Signed-off-by: YueHaibing Signed-off-by: Greg Kroah-Hartman --- drivers/usb/misc/ftdi-elan.c | 2 -- 1 file changed, 2 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/misc/ftdi-elan.c b/drivers/usb/misc/ftdi-elan.c index 76c718ac8c78..b2b05c99e668 100644 --- a/drivers/usb/misc/ftdi-elan.c +++ b/drivers/usb/misc/ftdi-elan.c @@ -915,7 +915,6 @@ static int ftdi_elan_respond_engine(struct usb_ftdi *ftdi) int bytes_read = 0; int retry_on_empty = 1; int retry_on_timeout = 3; - int empty_packets = 0; read:{ int packet_bytes = 0; int retval = usb_bulk_msg(ftdi->udev, @@ -963,7 +962,6 @@ read:{ } else if (packet_bytes == 2) { unsigned char s0 = ftdi->bulk_in_buffer[0]; unsigned char s1 = ftdi->bulk_in_buffer[1]; - empty_packets += 1; if (s0 == 0x31 && s1 == 0x60) { if (retry_on_empty-- > 0) { goto more; -- cgit From 3af5d01c29c3285241d45739a945465e4a2b9740 Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Tue, 22 Jan 2019 16:11:59 +0100 Subject: usb: sisusb_con, convert addr macros to functions Convert SISUSB_VADDR and SISUSB_HADDR to inline functions. Now, there are no more hidden accesses to local variables (vc_data and sisusb_usb_data). sisusb_haddr returns unsigned long from now on, not u16 *, as ulong is what every caller expects -- we can remove some casts. Call sites were aligned to be readable too. Use sisusb_haddr on 4 more places in sisusbcon_blank and sisusbcon_scroll. It was open coded there with [x, y] being [0, 0]. Signed-off-by: Jiri Slaby Signed-off-by: Greg Kroah-Hartman --- drivers/usb/misc/sisusbvga/sisusb_con.c | 78 ++++++++++++++++----------------- 1 file changed, 39 insertions(+), 39 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/misc/sisusbvga/sisusb_con.c b/drivers/usb/misc/sisusbvga/sisusb_con.c index c4f017e1d17a..28faf566b8fb 100644 --- a/drivers/usb/misc/sisusbvga/sisusb_con.c +++ b/drivers/usb/misc/sisusbvga/sisusb_con.c @@ -356,15 +356,22 @@ sisusbcon_invert_region(struct vc_data *vc, u16 *p, int count) } } -#define SISUSB_VADDR(x,y) \ - ((u16 *)c->vc_origin + \ - (y) * sisusb->sisusb_num_columns + \ - (x)) +static inline void *sisusb_vaddr(const struct sisusb_usb_data *sisusb, + const struct vc_data *c, unsigned int x, unsigned int y) +{ + return (u16 *)c->vc_origin + y * sisusb->sisusb_num_columns + x; +} + +static inline unsigned long sisusb_haddr(const struct sisusb_usb_data *sisusb, + const struct vc_data *c, unsigned int x, unsigned int y) +{ + unsigned long offset = c->vc_origin - sisusb->scrbuf; + + /* 2 bytes per each character */ + offset += 2 * (y * sisusb->sisusb_num_columns + x); -#define SISUSB_HADDR(x,y) \ - ((u16 *)(sisusb->vrambase + (c->vc_origin - sisusb->scrbuf)) + \ - (y) * sisusb->sisusb_num_columns + \ - (x)) + return sisusb->vrambase + offset; +} /* Interface routine */ static void @@ -382,9 +389,8 @@ sisusbcon_putc(struct vc_data *c, int ch, int y, int x) return; } - - sisusb_copy_memory(sisusb, (char *)SISUSB_VADDR(x, y), - (long)SISUSB_HADDR(x, y), 2); + sisusb_copy_memory(sisusb, sisusb_vaddr(sisusb, c, x, y), + sisusb_haddr(sisusb, c, x, y), 2); mutex_unlock(&sisusb->lock); } @@ -408,7 +414,7 @@ sisusbcon_putcs(struct vc_data *c, const unsigned short *s, * because the vt does this AFTER calling us. */ - dest = SISUSB_VADDR(x, y); + dest = sisusb_vaddr(sisusb, c, x, y); for (i = count; i > 0; i--) sisusbcon_writew(sisusbcon_readw(s++), dest++); @@ -418,8 +424,8 @@ sisusbcon_putcs(struct vc_data *c, const unsigned short *s, return; } - sisusb_copy_memory(sisusb, (char *)SISUSB_VADDR(x, y), - (long)SISUSB_HADDR(x, y), count * 2); + sisusb_copy_memory(sisusb, sisusb_vaddr(sisusb, c, x, y), + sisusb_haddr(sisusb, c, x, y), count * 2); mutex_unlock(&sisusb->lock); } @@ -446,7 +452,7 @@ sisusbcon_clear(struct vc_data *c, int y, int x, int height, int width) * this AFTER calling us. */ - dest = SISUSB_VADDR(x, y); + dest = sisusb_vaddr(sisusb, c, x, y); cols = sisusb->sisusb_num_columns; @@ -472,8 +478,8 @@ sisusbcon_clear(struct vc_data *c, int y, int x, int height, int width) length = ((height * cols) - x - (cols - width - x)) * 2; - sisusb_copy_memory(sisusb, (unsigned char *)SISUSB_VADDR(x, y), - (long)SISUSB_HADDR(x, y), length); + sisusb_copy_memory(sisusb, sisusb_vaddr(sisusb, c, x, y), + sisusb_haddr(sisusb, c, x, y), length); mutex_unlock(&sisusb->lock); } @@ -520,9 +526,8 @@ sisusbcon_switch(struct vc_data *c) sisusbcon_memcpyw((u16 *)c->vc_origin, (u16 *)c->vc_screenbuf, length); - sisusb_copy_memory(sisusb, (unsigned char *)c->vc_origin, - (long)SISUSB_HADDR(0, 0), - length); + sisusb_copy_memory(sisusb, (char *)c->vc_origin, + sisusb_haddr(sisusb, c, 0, 0), length); mutex_unlock(&sisusb->lock); @@ -628,10 +633,8 @@ sisusbcon_blank(struct vc_data *c, int blank, int mode_switch) sisusbcon_memsetw((u16 *)c->vc_origin, c->vc_video_erase_char, c->vc_screenbuf_size); - sisusb_copy_memory(sisusb, - (unsigned char *)c->vc_origin, - (u32)(sisusb->vrambase + - (c->vc_origin - sisusb->scrbuf)), + sisusb_copy_memory(sisusb, (char *)c->vc_origin, + sisusb_haddr(sisusb, c, 0, 0), c->vc_screenbuf_size); sisusb->con_blanked = 1; ret = 1; @@ -796,24 +799,24 @@ sisusbcon_scroll_area(struct vc_data *c, struct sisusb_usb_data *sisusb, switch (dir) { case SM_UP: - sisusbcon_memmovew(SISUSB_VADDR(0, t), - SISUSB_VADDR(0, t + lines), + sisusbcon_memmovew(sisusb_vaddr(sisusb, c, 0, t), + sisusb_vaddr(sisusb, c, 0, t + lines), (b - t - lines) * cols * 2); - sisusbcon_memsetw(SISUSB_VADDR(0, b - lines), eattr, - lines * cols * 2); + sisusbcon_memsetw(sisusb_vaddr(sisusb, c, 0, b - lines), + eattr, lines * cols * 2); break; case SM_DOWN: - sisusbcon_memmovew(SISUSB_VADDR(0, t + lines), - SISUSB_VADDR(0, t), + sisusbcon_memmovew(sisusb_vaddr(sisusb, c, 0, t + lines), + sisusb_vaddr(sisusb, c, 0, t), (b - t - lines) * cols * 2); - sisusbcon_memsetw(SISUSB_VADDR(0, t), eattr, + sisusbcon_memsetw(sisusb_vaddr(sisusb, c, 0, t), eattr, lines * cols * 2); break; } - sisusb_copy_memory(sisusb, (char *)SISUSB_VADDR(0, t), - (long)SISUSB_HADDR(0, t), length); + sisusb_copy_memory(sisusb, sisusb_vaddr(sisusb, c, 0, t), + sisusb_haddr(sisusb, c, 0, t), length); mutex_unlock(&sisusb->lock); @@ -830,7 +833,6 @@ sisusbcon_scroll(struct vc_data *c, unsigned int t, unsigned int b, int copyall = 0; unsigned long oldorigin; unsigned int delta = lines * c->vc_size_row; - u32 originoffset; /* Returning != 0 means we have done the scrolling successfully. * Returning 0 makes vt do the scrolling on its own. @@ -913,23 +915,21 @@ sisusbcon_scroll(struct vc_data *c, unsigned int t, unsigned int b, break; } - originoffset = (u32)(c->vc_origin - sisusb->scrbuf); - if (copyall) sisusb_copy_memory(sisusb, (char *)c->vc_origin, - (u32)(sisusb->vrambase + originoffset), + sisusb_haddr(sisusb, c, 0, 0), c->vc_screenbuf_size); else if (dir == SM_UP) sisusb_copy_memory(sisusb, (char *)c->vc_origin + c->vc_screenbuf_size - delta, - (u32)sisusb->vrambase + originoffset + + sisusb_haddr(sisusb, c, 0, 0) + c->vc_screenbuf_size - delta, delta); else sisusb_copy_memory(sisusb, (char *)c->vc_origin, - (u32)(sisusb->vrambase + originoffset), + sisusb_haddr(sisusb, c, 0, 0), delta); c->vc_scr_end = c->vc_origin + c->vc_screenbuf_size; -- cgit From 022e468e1395737e26a54e11e956eb3e29106087 Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Tue, 22 Jan 2019 16:12:00 +0100 Subject: usb: sisusb_con, cleanup configs There are two macros defined: 1) ifdef CONFIG_COMPAT => define SISUSB_NEW_CONFIG_COMPAT 2) ifdef CONFIG_USB_SISUSBVGA_CON => define INCL_SISUSB_CON Remove the latter and make use only of the former. This removes one layer of obfuscation. Signed-off-by: Jiri Slaby Signed-off-by: Greg Kroah-Hartman --- drivers/usb/misc/sisusbvga/sisusb.c | 32 ++++++++++++++++---------------- drivers/usb/misc/sisusbvga/sisusb.h | 15 +-------------- drivers/usb/misc/sisusbvga/sisusb_con.c | 2 +- drivers/usb/misc/sisusbvga/sisusb_init.c | 4 ++-- 4 files changed, 20 insertions(+), 33 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/misc/sisusbvga/sisusb.c b/drivers/usb/misc/sisusbvga/sisusb.c index 3198d0477cf8..9560fde621ee 100644 --- a/drivers/usb/misc/sisusbvga/sisusb.c +++ b/drivers/usb/misc/sisusbvga/sisusb.c @@ -53,7 +53,7 @@ #include "sisusb.h" #include "sisusb_init.h" -#ifdef INCL_SISUSB_CON +#ifdef CONFIG_USB_SISUSBVGA_CON #include #endif @@ -61,7 +61,7 @@ /* Forward declarations / clean-up routines */ -#ifdef INCL_SISUSB_CON +#ifdef CONFIG_USB_SISUSBVGA_CON static int sisusb_first_vc; static int sisusb_last_vc; module_param_named(first, sisusb_first_vc, int, 0); @@ -1198,7 +1198,7 @@ static int sisusb_read_mem_bulk(struct sisusb_usb_data *sisusb, u32 addr, /* High level: Gfx (indexed) register access */ -#ifdef INCL_SISUSB_CON +#ifdef CONFIG_USB_SISUSBVGA_CON int sisusb_setreg(struct sisusb_usb_data *sisusb, int port, u8 data) { return sisusb_write_memio_byte(sisusb, SISUSB_TYPE_IO, port, data); @@ -1272,7 +1272,7 @@ int sisusb_setidxregand(struct sisusb_usb_data *sisusb, int port, /* Write/read video ram */ -#ifdef INCL_SISUSB_CON +#ifdef CONFIG_USB_SISUSBVGA_CON int sisusb_writeb(struct sisusb_usb_data *sisusb, u32 adr, u8 data) { return sisusb_write_memio_byte(sisusb, SISUSB_TYPE_MEM, adr, data); @@ -2255,7 +2255,7 @@ static int sisusb_init_gfxdevice(struct sisusb_usb_data *sisusb, int initscreen) } -#ifdef INCL_SISUSB_CON +#ifdef CONFIG_USB_SISUSBVGA_CON /* Set up default text mode: * - Set text mode (0x03) @@ -2448,7 +2448,7 @@ void sisusb_delete(struct kref *kref) sisusb->sisusb_dev = NULL; sisusb_free_buffers(sisusb); sisusb_free_urbs(sisusb); -#ifdef INCL_SISUSB_CON +#ifdef CONFIG_USB_SISUSBVGA_CON kfree(sisusb->SiS_Pr); #endif kfree(sisusb); @@ -2844,7 +2844,7 @@ static int sisusb_handle_command(struct sisusb_usb_data *sisusb, case SUCMD_HANDLETEXTMODE: retval = 0; -#ifdef INCL_SISUSB_CON +#ifdef CONFIG_USB_SISUSBVGA_CON /* Gfx core must be initialized, SiS_Pr must exist */ if (!sisusb->gfxinit || !sisusb->SiS_Pr) return -ENODEV; @@ -2860,7 +2860,7 @@ static int sisusb_handle_command(struct sisusb_usb_data *sisusb, #endif break; -#ifdef INCL_SISUSB_CON +#ifdef CONFIG_USB_SISUSBVGA_CON case SUCMD_SETMODE: /* Gfx core must be initialized, SiS_Pr must exist */ if (!sisusb->gfxinit || !sisusb->SiS_Pr) @@ -2944,7 +2944,7 @@ static long sisusb_ioctl(struct file *file, unsigned int cmd, unsigned long arg) x.sisusb_vramsize = sisusb->vramsize; x.sisusb_minor = sisusb->minor; x.sisusb_fbdevactive = 0; -#ifdef INCL_SISUSB_CON +#ifdef CONFIG_USB_SISUSBVGA_CON x.sisusb_conactive = sisusb->haveconsole ? 1 : 0; #else x.sisusb_conactive = 0; @@ -2975,7 +2975,7 @@ err_out: return retval; } -#ifdef SISUSB_NEW_CONFIG_COMPAT +#ifdef CONFIG_COMPAT static long sisusb_compat_ioctl(struct file *f, unsigned int cmd, unsigned long arg) { @@ -2998,7 +2998,7 @@ static const struct file_operations usb_sisusb_fops = { .read = sisusb_read, .write = sisusb_write, .llseek = sisusb_lseek, -#ifdef SISUSB_NEW_CONFIG_COMPAT +#ifdef CONFIG_COMPAT .compat_ioctl = sisusb_compat_ioctl, #endif .unlocked_ioctl = sisusb_ioctl @@ -3091,7 +3091,7 @@ static int sisusb_probe(struct usb_interface *intf, dev_info(&sisusb->sisusb_dev->dev, "Allocated %d output buffers\n", sisusb->numobufs); -#ifdef INCL_SISUSB_CON +#ifdef CONFIG_USB_SISUSBVGA_CON /* Allocate our SiS_Pr */ sisusb->SiS_Pr = kmalloc(sizeof(struct SiS_Private), GFP_KERNEL); if (!sisusb->SiS_Pr) { @@ -3112,7 +3112,7 @@ static int sisusb_probe(struct usb_interface *intf, if (dev->speed == USB_SPEED_HIGH || dev->speed >= USB_SPEED_SUPER) { int initscreen = 1; -#ifdef INCL_SISUSB_CON +#ifdef CONFIG_USB_SISUSBVGA_CON if (sisusb_first_vc > 0 && sisusb_last_vc > 0 && sisusb_first_vc <= sisusb_last_vc && sisusb_last_vc <= MAX_NR_CONSOLES) @@ -3134,7 +3134,7 @@ static int sisusb_probe(struct usb_interface *intf, dev_dbg(&sisusb->sisusb_dev->dev, "*** RWTEST END ***\n"); #endif -#ifdef INCL_SISUSB_CON +#ifdef CONFIG_USB_SISUSBVGA_CON sisusb_console_init(sisusb, sisusb_first_vc, sisusb_last_vc); #endif @@ -3160,7 +3160,7 @@ static void sisusb_disconnect(struct usb_interface *intf) if (!sisusb) return; -#ifdef INCL_SISUSB_CON +#ifdef CONFIG_USB_SISUSBVGA_CON sisusb_console_exit(sisusb); #endif @@ -3210,7 +3210,7 @@ static struct usb_driver sisusb_driver = { static int __init usb_sisusb_init(void) { -#ifdef INCL_SISUSB_CON +#ifdef CONFIG_USB_SISUSBVGA_CON sisusb_init_concode(); #endif diff --git a/drivers/usb/misc/sisusbvga/sisusb.h b/drivers/usb/misc/sisusbvga/sisusb.h index 20f03ad0ea16..8a5e6bb07d05 100644 --- a/drivers/usb/misc/sisusbvga/sisusb.h +++ b/drivers/usb/misc/sisusbvga/sisusb.h @@ -38,17 +38,8 @@ #ifndef _SISUSB_H_ #define _SISUSB_H_ -#ifdef CONFIG_COMPAT -#define SISUSB_NEW_CONFIG_COMPAT -#endif - #include -/* For older kernels, support for text consoles is by default - * off. To enable text console support, change the following: - */ -/* #define CONFIG_USB_SISUSBVGA_CON */ - /* Version Information */ #define SISUSB_VERSION 0 @@ -57,10 +48,6 @@ /* Include console and mode switching code? */ -#ifdef CONFIG_USB_SISUSBVGA_CON -#define INCL_SISUSB_CON 1 -#endif - #include #include #include "sisusb_struct.h" @@ -139,7 +126,7 @@ struct sisusb_usb_data { unsigned char gfxinit; /* graphics core initialized? */ unsigned short chipid, chipvendor; unsigned short chiprevision; -#ifdef INCL_SISUSB_CON +#ifdef CONFIG_USB_SISUSBVGA_CON struct SiS_Private *SiS_Pr; unsigned long scrbuf; unsigned int scrbuf_size; diff --git a/drivers/usb/misc/sisusbvga/sisusb_con.c b/drivers/usb/misc/sisusbvga/sisusb_con.c index 28faf566b8fb..10c15723a7c5 100644 --- a/drivers/usb/misc/sisusbvga/sisusb_con.c +++ b/drivers/usb/misc/sisusbvga/sisusb_con.c @@ -70,7 +70,7 @@ #include "sisusb.h" #include "sisusb_init.h" -#ifdef INCL_SISUSB_CON +#ifdef CONFIG_USB_SISUSBVGA_CON #define sisusbcon_writew(val, addr) (*(addr) = (val)) #define sisusbcon_readw(addr) (*(addr)) diff --git a/drivers/usb/misc/sisusbvga/sisusb_init.c b/drivers/usb/misc/sisusbvga/sisusb_init.c index 6a30e8bd9221..0f7170f5b53f 100644 --- a/drivers/usb/misc/sisusbvga/sisusb_init.c +++ b/drivers/usb/misc/sisusbvga/sisusb_init.c @@ -45,7 +45,7 @@ #include "sisusb.h" -#ifdef INCL_SISUSB_CON +#ifdef CONFIG_USB_SISUSBVGA_CON #include "sisusb_init.h" @@ -956,4 +956,4 @@ int SiSUSBSetVESAMode(struct SiS_Private *SiS_Pr, unsigned short VModeNo) return SiSUSBSetMode(SiS_Pr, ModeNo); } -#endif /* INCL_SISUSB_CON */ +#endif /* CONFIG_USB_SISUSBVGA_CON */ -- cgit From 0277531df26ff75f010882ad820ca83e35935a2f Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Tue, 22 Jan 2019 16:12:01 +0100 Subject: usb: sisusb: let files build only when needed After the previous patch we see, that whole files are ifdeffed depending on CONFIG options. So do not build the files at all if the CONFIG is not enabled. (I.e. move the check from .c to Makefile.) Signed-off-by: Jiri Slaby Signed-off-by: Greg Kroah-Hartman --- drivers/usb/misc/sisusbvga/Makefile | 3 ++- drivers/usb/misc/sisusbvga/sisusb_con.c | 7 ------- drivers/usb/misc/sisusbvga/sisusb_init.c | 5 ----- 3 files changed, 2 insertions(+), 13 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/misc/sisusbvga/Makefile b/drivers/usb/misc/sisusbvga/Makefile index 6ed3a638261a..6551bce68ac5 100644 --- a/drivers/usb/misc/sisusbvga/Makefile +++ b/drivers/usb/misc/sisusbvga/Makefile @@ -5,4 +5,5 @@ obj-$(CONFIG_USB_SISUSBVGA) += sisusbvga.o -sisusbvga-y := sisusb.o sisusb_init.o sisusb_con.o +sisusbvga-y := sisusb.o +sisusbvga-$(CONFIG_USB_SISUSBVGA_CON) += sisusb_con.o sisusb_init.o diff --git a/drivers/usb/misc/sisusbvga/sisusb_con.c b/drivers/usb/misc/sisusbvga/sisusb_con.c index 10c15723a7c5..8e6d1b02e7c2 100644 --- a/drivers/usb/misc/sisusbvga/sisusb_con.c +++ b/drivers/usb/misc/sisusbvga/sisusb_con.c @@ -70,8 +70,6 @@ #include "sisusb.h" #include "sisusb_init.h" -#ifdef CONFIG_USB_SISUSBVGA_CON - #define sisusbcon_writew(val, addr) (*(addr) = (val)) #define sisusbcon_readw(addr) (*(addr)) #define sisusbcon_memmovew(d, s, c) memmove(d, s, c) @@ -1534,8 +1532,3 @@ void __init sisusb_init_concode(void) for (i = 0; i < MAX_NR_CONSOLES; i++) mysisusbs[i] = NULL; } - -#endif /* INCL_CON */ - - - diff --git a/drivers/usb/misc/sisusbvga/sisusb_init.c b/drivers/usb/misc/sisusbvga/sisusb_init.c index 0f7170f5b53f..66f6ab5acd97 100644 --- a/drivers/usb/misc/sisusbvga/sisusb_init.c +++ b/drivers/usb/misc/sisusbvga/sisusb_init.c @@ -44,9 +44,6 @@ #include #include "sisusb.h" - -#ifdef CONFIG_USB_SISUSBVGA_CON - #include "sisusb_init.h" /*********************************************/ @@ -955,5 +952,3 @@ int SiSUSBSetVESAMode(struct SiS_Private *SiS_Pr, unsigned short VModeNo) return SiSUSBSetMode(SiS_Pr, ModeNo); } - -#endif /* CONFIG_USB_SISUSBVGA_CON */ -- cgit From 5b25536954bf8761704e05baa05e993d323bff8a Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Tue, 22 Jan 2019 16:12:02 +0100 Subject: usb: sisusb: remove useless macros and compact the code Remove macros which are only wrappers around standard operations. When we expand them into code, we see that sisusbcon_memsetw can simply use memset16 and sisusbcon_putcs can just call memcpy. So make the code compact. Signed-off-by: Jiri Slaby Signed-off-by: Greg Kroah-Hartman --- drivers/usb/misc/sisusbvga/sisusb_con.c | 48 +++++++++++---------------------- 1 file changed, 15 insertions(+), 33 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/misc/sisusbvga/sisusb_con.c b/drivers/usb/misc/sisusbvga/sisusb_con.c index 8e6d1b02e7c2..cd0155310fea 100644 --- a/drivers/usb/misc/sisusbvga/sisusb_con.c +++ b/drivers/usb/misc/sisusbvga/sisusb_con.c @@ -70,11 +70,6 @@ #include "sisusb.h" #include "sisusb_init.h" -#define sisusbcon_writew(val, addr) (*(addr) = (val)) -#define sisusbcon_readw(addr) (*(addr)) -#define sisusbcon_memmovew(d, s, c) memmove(d, s, c) -#define sisusbcon_memcpyw(d, s, c) memcpy(d, s, c) - /* vc_data -> sisusb conversion table */ static struct sisusb_usb_data *mysisusbs[MAX_NR_CONSOLES]; @@ -84,9 +79,7 @@ static const struct consw sisusb_con; static inline void sisusbcon_memsetw(u16 *s, u16 c, unsigned int count) { - count /= 2; - while (count--) - sisusbcon_writew(c, s++); + memset16(s, c, count / 2); } static inline void @@ -344,13 +337,11 @@ sisusbcon_invert_region(struct vc_data *vc, u16 *p, int count) */ while (count--) { - u16 a = sisusbcon_readw(p); - - a = ((a) & 0x88ff) | - (((a) & 0x7000) >> 4) | - (((a) & 0x0700) << 4); + u16 a = *p; - sisusbcon_writew(a, p++); + *p++ = ((a) & 0x88ff) | + (((a) & 0x7000) >> 4) | + (((a) & 0x0700) << 4); } } @@ -399,8 +390,6 @@ sisusbcon_putcs(struct vc_data *c, const unsigned short *s, int count, int y, int x) { struct sisusb_usb_data *sisusb; - u16 *dest; - int i; sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num); if (!sisusb) @@ -412,10 +401,7 @@ sisusbcon_putcs(struct vc_data *c, const unsigned short *s, * because the vt does this AFTER calling us. */ - dest = sisusb_vaddr(sisusb, c, x, y); - - for (i = count; i > 0; i--) - sisusbcon_writew(sisusbcon_readw(s++), dest++); + memcpy(sisusb_vaddr(sisusb, c, x, y), s, count * 2); if (sisusb_is_inactive(c, sisusb)) { mutex_unlock(&sisusb->lock); @@ -521,8 +507,7 @@ sisusbcon_switch(struct vc_data *c) (int)(sisusb->scrbuf + sisusb->scrbuf_size - c->vc_origin)); /* Restore the screen contents */ - sisusbcon_memcpyw((u16 *)c->vc_origin, (u16 *)c->vc_screenbuf, - length); + memcpy((u16 *)c->vc_origin, (u16 *)c->vc_screenbuf, length); sisusb_copy_memory(sisusb, (char *)c->vc_origin, sisusb_haddr(sisusb, c, 0, 0), length); @@ -559,8 +544,7 @@ sisusbcon_save_screen(struct vc_data *c) (int)(sisusb->scrbuf + sisusb->scrbuf_size - c->vc_origin)); /* Save the screen contents to vc's private buffer */ - sisusbcon_memcpyw((u16 *)c->vc_screenbuf, (u16 *)c->vc_origin, - length); + memcpy((u16 *)c->vc_screenbuf, (u16 *)c->vc_origin, length); mutex_unlock(&sisusb->lock); } @@ -797,7 +781,7 @@ sisusbcon_scroll_area(struct vc_data *c, struct sisusb_usb_data *sisusb, switch (dir) { case SM_UP: - sisusbcon_memmovew(sisusb_vaddr(sisusb, c, 0, t), + memmove(sisusb_vaddr(sisusb, c, 0, t), sisusb_vaddr(sisusb, c, 0, t + lines), (b - t - lines) * cols * 2); sisusbcon_memsetw(sisusb_vaddr(sisusb, c, 0, b - lines), @@ -805,7 +789,7 @@ sisusbcon_scroll_area(struct vc_data *c, struct sisusb_usb_data *sisusb, break; case SM_DOWN: - sisusbcon_memmovew(sisusb_vaddr(sisusb, c, 0, t + lines), + memmove(sisusb_vaddr(sisusb, c, 0, t + lines), sisusb_vaddr(sisusb, c, 0, t), (b - t - lines) * cols * 2); sisusbcon_memsetw(sisusb_vaddr(sisusb, c, 0, t), eattr, @@ -874,7 +858,7 @@ sisusbcon_scroll(struct vc_data *c, unsigned int t, unsigned int b, if (c->vc_scr_end + delta >= sisusb->scrbuf + sisusb->scrbuf_size) { - sisusbcon_memcpyw((u16 *)sisusb->scrbuf, + memcpy((u16 *)sisusb->scrbuf, (u16 *)(oldorigin + delta), c->vc_screenbuf_size - delta); c->vc_origin = sisusb->scrbuf; @@ -892,12 +876,10 @@ sisusbcon_scroll(struct vc_data *c, unsigned int t, unsigned int b, case SM_DOWN: if (oldorigin - delta < sisusb->scrbuf) { - sisusbcon_memmovew((u16 *)(sisusb->scrbuf + - sisusb->scrbuf_size - - c->vc_screenbuf_size + - delta), - (u16 *)oldorigin, - c->vc_screenbuf_size - delta); + memmove((void *)sisusb->scrbuf + sisusb->scrbuf_size - + c->vc_screenbuf_size + delta, + (u16 *)oldorigin, + c->vc_screenbuf_size - delta); c->vc_origin = sisusb->scrbuf + sisusb->scrbuf_size - c->vc_screenbuf_size; -- cgit From 2c904963b1dd2acd4bc785b6c72e10a6283c2081 Mon Sep 17 00:00:00 2001 From: Shuah Khan Date: Thu, 24 Jan 2019 14:46:42 -0700 Subject: usbip: Fix vhci_urb_enqueue() URB null transfer buffer error path Fix vhci_urb_enqueue() to print debug msg and return error instead of failing with BUG_ON. Signed-off-by: Shuah Khan Signed-off-by: Greg Kroah-Hartman --- drivers/usb/usbip/vhci_hcd.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/usbip/vhci_hcd.c b/drivers/usb/usbip/vhci_hcd.c index 1e592ec94ba4..f46ee1fefe02 100644 --- a/drivers/usb/usbip/vhci_hcd.c +++ b/drivers/usb/usbip/vhci_hcd.c @@ -702,8 +702,10 @@ static int vhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, gfp_t mem_flag } vdev = &vhci_hcd->vdev[portnum-1]; - /* patch to usb_sg_init() is in 2.5.60 */ - BUG_ON(!urb->transfer_buffer && urb->transfer_buffer_length); + if (!urb->transfer_buffer && urb->transfer_buffer_length) { + dev_dbg(dev, "Null URB transfer buffer\n"); + return -EINVAL; + } spin_lock_irqsave(&vhci->lock, flags); -- cgit From f84f9ae32fbf026ecc6d7a5e546cac0963ae994e Mon Sep 17 00:00:00 2001 From: Marek Szyprowski Date: Mon, 21 Jan 2019 15:33:35 +0100 Subject: usb: misc: usb3503: Add system sleep support in non-I2C mode USB3503 chip can be used without any I2C connection, what is handled by a simple platform device driver. Add support for resetting the chip (via GPIO lines) during system suspend/resume cycle by adding calls to existing suspend/resume functions used for E2C device. Signed-off-by: Marek Szyprowski Signed-off-by: Greg Kroah-Hartman --- drivers/usb/misc/usb3503.c | 38 ++++++++++++++++++++++++++++++-------- 1 file changed, 30 insertions(+), 8 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/misc/usb3503.c b/drivers/usb/misc/usb3503.c index f723f7b8c9ac..d5141aa79dd4 100644 --- a/drivers/usb/misc/usb3503.c +++ b/drivers/usb/misc/usb3503.c @@ -355,11 +355,8 @@ static int usb3503_platform_remove(struct platform_device *pdev) } #ifdef CONFIG_PM_SLEEP -static int usb3503_i2c_suspend(struct device *dev) +static int usb3503_suspend(struct usb3503 *hub) { - struct i2c_client *client = to_i2c_client(dev); - struct usb3503 *hub = i2c_get_clientdata(client); - usb3503_switch_mode(hub, USB3503_MODE_STANDBY); if (hub->clk) @@ -368,11 +365,8 @@ static int usb3503_i2c_suspend(struct device *dev) return 0; } -static int usb3503_i2c_resume(struct device *dev) +static int usb3503_resume(struct usb3503 *hub) { - struct i2c_client *client = to_i2c_client(dev); - struct usb3503 *hub = i2c_get_clientdata(client); - if (hub->clk) clk_prepare_enable(hub->clk); @@ -380,11 +374,38 @@ static int usb3503_i2c_resume(struct device *dev) return 0; } + +static int usb3503_i2c_suspend(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + + return usb3503_suspend(i2c_get_clientdata(client)); +} + +static int usb3503_i2c_resume(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + + return usb3503_resume(i2c_get_clientdata(client)); +} + +static int usb3503_platform_suspend(struct device *dev) +{ + return usb3503_suspend(dev_get_drvdata(dev)); +} + +static int usb3503_platform_resume(struct device *dev) +{ + return usb3503_resume(dev_get_drvdata(dev)); +} #endif static SIMPLE_DEV_PM_OPS(usb3503_i2c_pm_ops, usb3503_i2c_suspend, usb3503_i2c_resume); +static SIMPLE_DEV_PM_OPS(usb3503_platform_pm_ops, usb3503_platform_suspend, + usb3503_platform_resume); + static const struct i2c_device_id usb3503_id[] = { { USB3503_I2C_NAME, 0 }, { } @@ -415,6 +436,7 @@ static struct platform_driver usb3503_platform_driver = { .driver = { .name = USB3503_I2C_NAME, .of_match_table = of_match_ptr(usb3503_of_match), + .pm = &usb3503_platform_pm_ops, }, .probe = usb3503_platform_probe, .remove = usb3503_platform_remove, -- cgit From 9997ab35f4284ea5bd07768797929d1d646064c8 Mon Sep 17 00:00:00 2001 From: Jun Li Date: Tue, 22 Jan 2019 09:00:24 +0000 Subject: usb: typec: tpcm: improve error handling of tcpm_register_port Remove debugfs if tcpm register port fails. Signed-off-by: Li Jun Reviewed-by: Guenter Roeck Reviewed-by: Heikki Krogerus Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/tcpm/tcpm.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c index 4bc29b586698..f1d3e54210df 100644 --- a/drivers/usb/typec/tcpm/tcpm.c +++ b/drivers/usb/typec/tcpm/tcpm.c @@ -4810,12 +4810,12 @@ struct tcpm_port *tcpm_register_port(struct device *dev, struct tcpc_dev *tcpc) err = devm_tcpm_psy_register(port); if (err) - goto out_destroy_wq; + goto out_role_sw_put; port->typec_port = typec_register_port(port->dev, &port->typec_caps); if (IS_ERR(port->typec_port)) { err = PTR_ERR(port->typec_port); - goto out_destroy_wq; + goto out_role_sw_put; } if (tcpc->config && tcpc->config->alt_modes) { @@ -4848,8 +4848,10 @@ struct tcpm_port *tcpm_register_port(struct device *dev, struct tcpc_dev *tcpc) tcpm_log(port, "%s: registered", dev_name(dev)); return port; -out_destroy_wq: +out_role_sw_put: usb_role_switch_put(port->role_sw); +out_destroy_wq: + tcpm_debugfs_exit(port); destroy_workqueue(port->wq); return ERR_PTR(err); } -- cgit From ac626ff960624d81442a3ec4a3e71a9e929e98ae Mon Sep 17 00:00:00 2001 From: YueHaibing Date: Wed, 23 Jan 2019 22:16:57 +0800 Subject: usb: ftdi-elan: Fix if == else warnings in ftdi_elan_respond_engine Fixes the following coccinelle warning: ./drivers/usb/misc/ftdi-elan.c:972:10-12: WARNING: possible condition with no effect (if == else) ./drivers/usb/misc/ftdi-elan.c:983:9-11: WARNING: possible condition with no effect (if == else) ./drivers/usb/misc/ftdi-elan.c:2052:11-13: WARNING: possible condition with no effect (if == else) All these else/if branches just do the same thing actually as the last else branch, So it can be merged into the last branch. Signed-off-by: YueHaibing Signed-off-by: Greg Kroah-Hartman --- drivers/usb/misc/ftdi-elan.c | 24 ------------------------ 1 file changed, 24 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/misc/ftdi-elan.c b/drivers/usb/misc/ftdi-elan.c index b2b05c99e668..257efacf3551 100644 --- a/drivers/usb/misc/ftdi-elan.c +++ b/drivers/usb/misc/ftdi-elan.c @@ -959,30 +959,6 @@ read:{ dev_err(&ftdi->udev->dev, "error = %d with packet_bytes = %d with total %d bytes%s\n", retval, packet_bytes, bytes_read, diag); return retval; - } else if (packet_bytes == 2) { - unsigned char s0 = ftdi->bulk_in_buffer[0]; - unsigned char s1 = ftdi->bulk_in_buffer[1]; - if (s0 == 0x31 && s1 == 0x60) { - if (retry_on_empty-- > 0) { - goto more; - } else - return 0; - } else if (s0 == 0x31 && s1 == 0x00) { - if (retry_on_empty-- > 0) { - goto more; - } else - return 0; - } else { - if (retry_on_empty-- > 0) { - goto more; - } else - return 0; - } - } else if (packet_bytes == 1) { - if (retry_on_empty-- > 0) { - goto more; - } else - return 0; } else { if (retry_on_empty-- > 0) { goto more; -- cgit From a49e1abf07701600ad5ef990e56d676cbab91bf5 Mon Sep 17 00:00:00 2001 From: Mans Rullgard Date: Thu, 24 Jan 2019 13:48:39 +0000 Subject: USB: serial: cp210x: support all gpios on CP2102N QFN28 package The QFN28 package version of the CP2102N has three additional gpio pins. Add support for these. Signed-off-by: Mans Rullgard Signed-off-by: Johan Hovold --- drivers/usb/serial/cp210x.c | 19 +++++++++++++------ 1 file changed, 13 insertions(+), 6 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c index c0777a374a88..336a3c0f9f2c 100644 --- a/drivers/usb/serial/cp210x.c +++ b/drivers/usb/serial/cp210x.c @@ -1574,12 +1574,6 @@ static int cp2102n_gpioconf_init(struct usb_serial *serial) if (config_version != 0x01) return -ENOTSUPP; - /* - * We only support 4 GPIOs even on the QFN28 package, because - * config locations of GPIOs 4-6 determined using reverse - * engineering revealed conflicting offsets with other - * documented functions. So we'll just play it safe for now. - */ priv->gc.ngpio = 4; /* @@ -1594,6 +1588,19 @@ static int cp2102n_gpioconf_init(struct usb_serial *serial) /* 0 indicates GPIO mode, 1 is alternate function */ priv->gpio_altfunc = (gpio_ctrl >> 2) & 0x0f; + if (priv->partnum == CP210X_PARTNUM_CP2102N_QFN28) { + /* + * For the QFN28 package, GPIO4-6 are controlled by + * the low three bits of the mode/latch fields. + * Contrary to the document linked above, the bits for + * the SUSPEND pins are elsewhere. No alternate + * function is available for these pins. + */ + priv->gc.ngpio = 7; + gpio_latch |= (gpio_rst_latch & 7) << 4; + priv->gpio_pushpull |= (gpio_pushpull & 7) << 4; + } + /* * The CP2102N does not strictly has input and output pin modes, * it only knows open-drain and push-pull modes which is set at -- cgit From d7c3eeffbc55ad462e6447902ffa752c7e9d6aae Mon Sep 17 00:00:00 2001 From: YueHaibing Date: Wed, 23 Jan 2019 22:31:36 +0800 Subject: usb: gadget: Remove dead branch code 'num' is a u8 variable, it never greater than 255, So the if branch is dead code and can be removed. Signed-off-by: YueHaibing Signed-off-by: Felipe Balbi --- drivers/usb/gadget/function/uvc_configfs.c | 8 -------- 1 file changed, 8 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/function/uvc_configfs.c b/drivers/usb/gadget/function/uvc_configfs.c index bc1e2af566c3..8fe85cb4e87e 100644 --- a/drivers/usb/gadget/function/uvc_configfs.c +++ b/drivers/usb/gadget/function/uvc_configfs.c @@ -1570,10 +1570,6 @@ uvcg_uncompressed_##cname##_store(struct config_item *item, \ if (ret) \ goto end; \ \ - if (num > 255) { \ - ret = -EINVAL; \ - goto end; \ - } \ u->desc.aname = num; \ ret = len; \ end: \ @@ -1767,10 +1763,6 @@ uvcg_mjpeg_##cname##_store(struct config_item *item, \ if (ret) \ goto end; \ \ - if (num > 255) { \ - ret = -EINVAL; \ - goto end; \ - } \ u->desc.aname = num; \ ret = len; \ end: \ -- cgit From 54c9da1bcec44d234a2c6f55c2935d0980a50286 Mon Sep 17 00:00:00 2001 From: Jeffrey Hugo Date: Mon, 21 Jan 2019 14:33:08 -0700 Subject: usb: dwc3: qcom: Add support for MSM8998 Add a MSM8998 specific DT compatible so that we can properly bind to the device and enable the USB controller. Reviewed-by: Andy Gross Reviewed-by: Bjorn Andersson Signed-off-by: Jeffrey Hugo Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/dwc3-qcom.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/dwc3-qcom.c b/drivers/usb/dwc3/dwc3-qcom.c index a6d0203e40b6..184df4daa590 100644 --- a/drivers/usb/dwc3/dwc3-qcom.c +++ b/drivers/usb/dwc3/dwc3-qcom.c @@ -595,6 +595,7 @@ static const struct dev_pm_ops dwc3_qcom_dev_pm_ops = { static const struct of_device_id dwc3_qcom_of_match[] = { { .compatible = "qcom,dwc3" }, { .compatible = "qcom,msm8996-dwc3" }, + { .compatible = "qcom,msm8998-dwc3" }, { .compatible = "qcom,sdm845-dwc3" }, { } }; -- cgit From 1c1a3ddae9782ba748f5ceb775ed13ef554e8994 Mon Sep 17 00:00:00 2001 From: Yoshihiro Shimoda Date: Thu, 17 Jan 2019 16:24:15 +0900 Subject: usb: renesas_usbhs: replace udelay() with usleep_range() According to Documentation/timers/timers-howto.txt, a driver should use usleep_range() instead of udelay() on NON-ATOMIC CONTEXT if "SLEEPING FOR ~USECS OR SMALL MSECS ( 10us - 20ms)". Since the .hardware_init() and .power_ctrl() will run on NON-ATOMIC CONTEXT, this patch replaces udelay() with usleep_range(). Reviewed-by: Simon Horman Signed-off-by: Yoshihiro Shimoda Signed-off-by: Felipe Balbi --- drivers/usb/renesas_usbhs/rcar3.c | 2 +- drivers/usb/renesas_usbhs/rza.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/renesas_usbhs/rcar3.c b/drivers/usb/renesas_usbhs/rcar3.c index aa3820448286..5e730e9b40ef 100644 --- a/drivers/usb/renesas_usbhs/rcar3.c +++ b/drivers/usb/renesas_usbhs/rcar3.c @@ -59,7 +59,7 @@ static int usbhs_rcar3_power_ctrl(struct platform_device *pdev, if (enable) { usbhs_bset(priv, LPSTS, LPSTS_SUSPM, LPSTS_SUSPM); /* The controller on R-Car Gen3 needs to wait up to 45 usec */ - udelay(45); + usleep_range(45, 90); } else { usbhs_bset(priv, LPSTS, LPSTS_SUSPM, 0); } diff --git a/drivers/usb/renesas_usbhs/rza.c b/drivers/usb/renesas_usbhs/rza.c index 5b287257ec11..8c739bd24acd 100644 --- a/drivers/usb/renesas_usbhs/rza.c +++ b/drivers/usb/renesas_usbhs/rza.c @@ -35,7 +35,7 @@ static int usbhs_rza1_hardware_init(struct platform_device *pdev) /* Enable USB PLL (NOTE: ch0 controls both ch0 and ch1) */ usbhs_bset(priv, SYSCFG, UPLLE, UPLLE); - udelay(1000); + usleep_range(1000, 2000); usbhs_bset(priv, SUSPMODE, SUSPM, SUSPM); return 0; -- cgit From 169e3b68cadb5775daca009ced4faf01ffd97dcf Mon Sep 17 00:00:00 2001 From: Roger Quadros Date: Thu, 10 Jan 2019 17:04:28 +0200 Subject: usb: dwc3: gadget: Fix OTG events when gadget driver isn't loaded On v3.10a in dual-role mode, if port is in device mode and gadget driver isn't loaded, the OTG event interrupts don't come through. It seems that if the core is configured to be OTG2.0 only, then we can't leave the DCFG.DEVSPD at Super-speed (default) if we expect OTG to work properly. It must be set to High-speed. Fix this issue by configuring DCFG.DEVSPD to the supported maximum speed at gadget init. Device tree still needs to provide correct supported maximum speed for this to work. This issue wasn't present on v2.40a but is seen on v3.10a. It doesn't cause any side effects on v2.40a. Signed-off-by: Roger Quadros Signed-off-by: Sekhar Nori Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/gadget.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index bed2ff42780b..d478d46847b6 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -3339,6 +3339,8 @@ int dwc3_gadget_init(struct dwc3 *dwc) goto err4; } + dwc3_gadget_set_speed(&dwc->gadget, dwc->maximum_speed); + return 0; err4: -- cgit From eca6b49430c69742e511eb99516e86557d99ae70 Mon Sep 17 00:00:00 2001 From: Roger Quadros Date: Thu, 10 Jan 2019 17:04:30 +0200 Subject: usb: dwc3: keystone: Add support for ti,am654-dwc3 The AM654 SoC contains a DWC3 controller with TI specific wrapper. Add support for that. Unlike the Keystone 2 case, for AM654 We don't need to process any IRQs for basic USB operation. Signed-off-by: Roger Quadros Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/Kconfig | 6 +++--- drivers/usb/dwc3/dwc3-keystone.c | 11 ++++++++++- 2 files changed, 13 insertions(+), 4 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/Kconfig b/drivers/usb/dwc3/Kconfig index 1a0404fda596..34d9ce20532c 100644 --- a/drivers/usb/dwc3/Kconfig +++ b/drivers/usb/dwc3/Kconfig @@ -86,11 +86,11 @@ config USB_DWC3_HAPS platform, please say 'Y' or 'M' here. config USB_DWC3_KEYSTONE - tristate "Texas Instruments Keystone2 Platforms" - depends on ARCH_KEYSTONE || COMPILE_TEST + tristate "Texas Instruments Keystone2/AM654 Platforms" + depends on ARCH_KEYSTONE || ARCH_K3 || COMPILE_TEST default USB_DWC3 help - Support of USB2/3 functionality in TI Keystone2 platforms. + Support of USB2/3 functionality in TI Keystone2 and AM654 platforms. Say 'Y' or 'M' here if you have one such device config USB_DWC3_OF_SIMPLE diff --git a/drivers/usb/dwc3/dwc3-keystone.c b/drivers/usb/dwc3/dwc3-keystone.c index 193a9a88222a..cbee5fb9b9fb 100644 --- a/drivers/usb/dwc3/dwc3-keystone.c +++ b/drivers/usb/dwc3/dwc3-keystone.c @@ -106,6 +106,10 @@ static int kdwc3_probe(struct platform_device *pdev) goto err_irq; } + /* IRQ processing not required currently for AM65 */ + if (of_device_is_compatible(node, "ti,am654-dwc3")) + goto skip_irq; + irq = platform_get_irq(pdev, 0); if (irq < 0) { dev_err(&pdev->dev, "missing irq\n"); @@ -123,6 +127,7 @@ static int kdwc3_probe(struct platform_device *pdev) kdwc3_enable_irqs(kdwc); +skip_irq: error = of_platform_populate(node, NULL, NULL, dev); if (error) { dev_err(&pdev->dev, "failed to create dwc3 core\n"); @@ -152,8 +157,11 @@ static int kdwc3_remove_core(struct device *dev, void *c) static int kdwc3_remove(struct platform_device *pdev) { struct dwc3_keystone *kdwc = platform_get_drvdata(pdev); + struct device_node *node = pdev->dev.of_node; + + if (!of_device_is_compatible(node, "ti,am654-dwc3")) + kdwc3_disable_irqs(kdwc); - kdwc3_disable_irqs(kdwc); device_for_each_child(&pdev->dev, NULL, kdwc3_remove_core); pm_runtime_put_sync(kdwc->dev); pm_runtime_disable(kdwc->dev); @@ -165,6 +173,7 @@ static int kdwc3_remove(struct platform_device *pdev) static const struct of_device_id kdwc3_of_match[] = { { .compatible = "ti,keystone-dwc3", }, + { .compatible = "ti,am654-dwc3" }, {}, }; MODULE_DEVICE_TABLE(of, kdwc3_of_match); -- cgit From 4d8cd61609200dbeb179649e90235d8ab6d66ef5 Mon Sep 17 00:00:00 2001 From: Matteo Croce Date: Fri, 4 Jan 2019 22:44:43 +0100 Subject: usb: gadget: aspeed: fix typo Fix spelling mistake: "lenght" -> "length" Signed-off-by: Matteo Croce Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/aspeed-vhub/epn.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/udc/aspeed-vhub/epn.c b/drivers/usb/gadget/udc/aspeed-vhub/epn.c index 4a28e3fbeb0b..83340f4fdc6e 100644 --- a/drivers/usb/gadget/udc/aspeed-vhub/epn.c +++ b/drivers/usb/gadget/udc/aspeed-vhub/epn.c @@ -120,7 +120,7 @@ static void ast_vhub_epn_handle_ack(struct ast_vhub_ep *ep) /* No current DMA ongoing */ req->active = false; - /* Grab lenght out of HW */ + /* Grab length out of HW */ len = VHUB_EP_DMA_TX_SIZE(stat); /* If not using DMA, copy data out if needed */ -- cgit From 488e3b5fcd1d5c838b0b845a9d99b545ce46d84e Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Sun, 30 Dec 2018 16:53:08 +0100 Subject: usb: gadget: udc: reduce indentation Delete tab aligning a statement with the right hand side of a preceding assignment rather than the left hand side. Found with the help of Coccinelle. Signed-off-by: Julia Lawall Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/snps_udc_core.c | 17 ++++++++--------- 1 file changed, 8 insertions(+), 9 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/udc/snps_udc_core.c b/drivers/usb/gadget/udc/snps_udc_core.c index d4da47f4f6f4..3fcded31405a 100644 --- a/drivers/usb/gadget/udc/snps_udc_core.c +++ b/drivers/usb/gadget/udc/snps_udc_core.c @@ -947,15 +947,14 @@ static int prep_dma(struct udc_ep *ep, struct udc_request *req, gfp_t gfp) UDC_DMA_STP_STS_BS_HOST_READY, UDC_DMA_STP_STS_BS); - - /* clear NAK by writing CNAK */ - if (ep->naking) { - tmp = readl(&ep->regs->ctl); - tmp |= AMD_BIT(UDC_EPCTL_CNAK); - writel(tmp, &ep->regs->ctl); - ep->naking = 0; - UDC_QUEUE_CNAK(ep, ep->num); - } + /* clear NAK by writing CNAK */ + if (ep->naking) { + tmp = readl(&ep->regs->ctl); + tmp |= AMD_BIT(UDC_EPCTL_CNAK); + writel(tmp, &ep->regs->ctl); + ep->naking = 0; + UDC_QUEUE_CNAK(ep, ep->num); + } } -- cgit From 8b4c62aef6f611dcfcf0ce27731f0e439be17b05 Mon Sep 17 00:00:00 2001 From: Michał Mirosław Date: Sun, 16 Dec 2018 21:23:47 +0100 Subject: usb: gadget: u_serial: process RX in workqueue instead of tasklet MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Switch RX processing from tasklet to (delayed) work queue. This allows receiver more room to process incoming data and prevents flood of "ttyGS0: RX not scheduled?" messages on HS receive on slow CPU. A side effect is 2.4MB/s zmodem transfer speed (up from 1.8MB/s) on my test board. Signed-off-by: Michał Mirosław Signed-off-by: Felipe Balbi --- drivers/usb/gadget/function/u_serial.c | 35 ++++++++++++++-------------------- 1 file changed, 14 insertions(+), 21 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/function/u_serial.c b/drivers/usb/gadget/function/u_serial.c index 29436f75bbe0..65f634ec7fc2 100644 --- a/drivers/usb/gadget/function/u_serial.c +++ b/drivers/usb/gadget/function/u_serial.c @@ -16,7 +16,6 @@ #include #include -#include #include #include #include @@ -26,6 +25,7 @@ #include #include #include +#include #include #include "u_serial.h" @@ -110,7 +110,7 @@ struct gs_port { int read_allocated; struct list_head read_queue; unsigned n_read; - struct tasklet_struct push; + struct delayed_work push; struct list_head write_pool; int write_started; @@ -352,9 +352,10 @@ __acquires(&port->port_lock) * So QUEUE_SIZE packets plus however many the FIFO holds (usually two) * can be buffered before the TTY layer's buffers (currently 64 KB). */ -static void gs_rx_push(unsigned long _port) +static void gs_rx_push(struct work_struct *work) { - struct gs_port *port = (void *)_port; + struct delayed_work *w = to_delayed_work(work); + struct gs_port *port = container_of(w, struct gs_port, push); struct tty_struct *tty; struct list_head *queue = &port->read_queue; bool disconnect = false; @@ -429,21 +430,13 @@ static void gs_rx_push(unsigned long _port) /* We want our data queue to become empty ASAP, keeping data * in the tty and ldisc (not here). If we couldn't push any - * this time around, there may be trouble unless there's an - * implicit tty_unthrottle() call on its way... + * this time around, RX may be starved, so wait until next jiffy. * - * REVISIT we should probably add a timer to keep the tasklet - * from starving ... but it's not clear that case ever happens. + * We may leave non-empty queue only when there is a tty, and + * either it is throttled or there is no more room in flip buffer. */ - if (!list_empty(queue) && tty) { - if (!tty_throttled(tty)) { - if (do_push) - tasklet_schedule(&port->push); - else - pr_warn("ttyGS%d: RX not scheduled?\n", - port->port_num); - } - } + if (!list_empty(queue) && !tty_throttled(tty)) + schedule_delayed_work(&port->push, 1); /* If we're still connected, refill the USB RX queue. */ if (!disconnect && port->port_usb) @@ -459,7 +452,7 @@ static void gs_read_complete(struct usb_ep *ep, struct usb_request *req) /* Queue all received data until the tty layer is ready for it. */ spin_lock(&port->port_lock); list_add_tail(&req->list, &port->read_queue); - tasklet_schedule(&port->push); + schedule_delayed_work(&port->push, 0); spin_unlock(&port->port_lock); } @@ -854,8 +847,8 @@ static void gs_unthrottle(struct tty_struct *tty) * rts/cts, or other handshaking with the host, but if the * read queue backs up enough we'll be NAKing OUT packets. */ - tasklet_schedule(&port->push); pr_vdebug("ttyGS%d: unthrottle\n", port->port_num); + schedule_delayed_work(&port->push, 0); } spin_unlock_irqrestore(&port->port_lock, flags); } @@ -1159,7 +1152,7 @@ gs_port_alloc(unsigned port_num, struct usb_cdc_line_coding *coding) init_waitqueue_head(&port->drain_wait); init_waitqueue_head(&port->close_wait); - tasklet_init(&port->push, gs_rx_push, (unsigned long) port); + INIT_DELAYED_WORK(&port->push, gs_rx_push); INIT_LIST_HEAD(&port->read_pool); INIT_LIST_HEAD(&port->read_queue); @@ -1186,7 +1179,7 @@ static int gs_closed(struct gs_port *port) static void gserial_free_port(struct gs_port *port) { - tasklet_kill(&port->push); + cancel_delayed_work_sync(&port->push); /* wait for old opens to finish */ wait_event(port->close_wait, gs_closed(port)); WARN_ON(port->port_usb != NULL); -- cgit From e49107d8acfee263b2bd8831d4833c4ead152784 Mon Sep 17 00:00:00 2001 From: Paul Elder Date: Mon, 17 Dec 2018 01:03:40 -0500 Subject: usb: gadget: uvc: add uvcg_warn macro We only have uvcg_dbg, uvcg_info, and uvcg_err, so add uvcg_warn macro to print gadget device name and function name along with format. Signed-off-by: Paul Elder Signed-off-by: Felipe Balbi --- drivers/usb/gadget/function/uvc.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/function/uvc.h b/drivers/usb/gadget/function/uvc.h index 099d650082e5..1473d25ff17a 100644 --- a/drivers/usb/gadget/function/uvc.h +++ b/drivers/usb/gadget/function/uvc.h @@ -56,6 +56,8 @@ extern unsigned int uvc_gadget_trace_param; dev_dbg(&(f)->config->cdev->gadget->dev, "%s: " fmt, (f)->name, ##args) #define uvcg_info(f, fmt, args...) \ dev_info(&(f)->config->cdev->gadget->dev, "%s: " fmt, (f)->name, ##args) +#define uvcg_warn(f, fmt, args...) \ + dev_warn(&(f)->config->cdev->gadget->dev, "%s: " fmt, (f)->name, ##args) #define uvcg_err(f, fmt, args...) \ dev_err(&(f)->config->cdev->gadget->dev, "%s: " fmt, (f)->name, ##args) -- cgit From 546970fdab1da5fead4f0f5c8cbf4b1c68213707 Mon Sep 17 00:00:00 2001 From: Fabrizio Castro Date: Thu, 13 Dec 2018 20:23:55 +0000 Subject: usb: gadget: udc: renesas_usb3: add support for r8a774c0 RZ/G2E USB 3.0 implementation is like the one found on R-Car E3, therefore add the same quirk. Reviewed-by: Simon Horman Reviewed-by: Yoshihiro Shimoda Signed-off-by: Fabrizio Castro Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/renesas_usb3.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/udc/renesas_usb3.c b/drivers/usb/gadget/udc/renesas_usb3.c index 6e34f9594159..7dc248546fd4 100644 --- a/drivers/usb/gadget/udc/renesas_usb3.c +++ b/drivers/usb/gadget/udc/renesas_usb3.c @@ -2629,6 +2629,10 @@ static const struct of_device_id usb3_of_match[] = { MODULE_DEVICE_TABLE(of, usb3_of_match); static const struct soc_device_attribute renesas_usb3_quirks_match[] = { + { + .soc_id = "r8a774c0", + .data = &renesas_usb3_priv_r8a77990, + }, { .soc_id = "r8a7795", .revision = "ES1.*", .data = &renesas_usb3_priv_r8a7795_es1, -- cgit From a3af5e3ad3f11a0001317da9e9fb78b371c5f603 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Fri, 11 Jan 2019 12:57:09 +0200 Subject: usb: dwc3: gadget: add dwc3_request status tracking This patch starts tracking dwc3_request status. A following patch will build on top of this to prevent a request from being queued twice. Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/core.h | 9 +++++++++ drivers/usb/dwc3/gadget.c | 3 +++ drivers/usb/dwc3/gadget.h | 2 ++ 3 files changed, 14 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index df876418cb78..5c3ee741541f 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -863,6 +863,7 @@ struct dwc3_hwparams { * @num_pending_sgs: counter to pending sgs * @num_queued_sgs: counter to the number of sgs which already got queued * @remaining: amount of data remaining + * @status: internal dwc3 request status tracking * @epnum: endpoint number to which this request refers * @trb: pointer to struct dwc3_trb * @trb_dma: DMA address of @trb @@ -883,6 +884,14 @@ struct dwc3_request { unsigned num_pending_sgs; unsigned int num_queued_sgs; unsigned remaining; + + unsigned int status; +#define DWC3_REQUEST_STATUS_QUEUED 0 +#define DWC3_REQUEST_STATUS_STARTED 1 +#define DWC3_REQUEST_STATUS_CANCELLED 2 +#define DWC3_REQUEST_STATUS_COMPLETED 3 +#define DWC3_REQUEST_STATUS_UNKNOWN -1 + u8 epnum; struct dwc3_trb *trb; dma_addr_t trb_dma; diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index d478d46847b6..9fde48656044 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -209,6 +209,7 @@ void dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req, struct dwc3 *dwc = dep->dwc; dwc3_gadget_del_and_unmap_request(dep, req, status); + req->status = DWC3_REQUEST_STATUS_COMPLETED; spin_unlock(&dwc->lock); usb_gadget_giveback_request(&dep->endpoint, &req->request); @@ -847,6 +848,7 @@ static struct usb_request *dwc3_gadget_ep_alloc_request(struct usb_ep *ep, req->direction = dep->direction; req->epnum = dep->number; req->dep = dep; + req->status = DWC3_REQUEST_STATUS_UNKNOWN; trace_dwc3_alloc_request(req); @@ -1443,6 +1445,7 @@ static int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req) trace_dwc3_ep_queue(req); list_add_tail(&req->list, &dep->pending_list); + req->status = DWC3_REQUEST_STATUS_QUEUED; /* * NOTICE: Isochronous endpoints should NEVER be prestarted. We must diff --git a/drivers/usb/dwc3/gadget.h b/drivers/usb/dwc3/gadget.h index 023a473648eb..6aebe8c0eae1 100644 --- a/drivers/usb/dwc3/gadget.h +++ b/drivers/usb/dwc3/gadget.h @@ -76,6 +76,7 @@ static inline void dwc3_gadget_move_started_request(struct dwc3_request *req) struct dwc3_ep *dep = req->dep; req->started = true; + req->status = DWC3_REQUEST_STATUS_STARTED; list_move_tail(&req->list, &dep->started_list); } @@ -91,6 +92,7 @@ static inline void dwc3_gadget_move_cancelled_request(struct dwc3_request *req) struct dwc3_ep *dep = req->dep; req->started = false; + req->status = DWC3_REQUEST_STATUS_CANCELLED; list_move_tail(&req->list, &dep->cancelled_list); } -- cgit From b2b6d601365a1acb90b87c85197d797447bc9a2c Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Fri, 11 Jan 2019 12:58:52 +0200 Subject: usb: dwc3: gadget: prevent dwc3_request from being queued twice Queueing the same request twice can introduce hard-to-debug problems. At least one function driver - Android's f_mtp.c - is known to cause this problem. While that function is out-of-tree, this is a problem that's easy enough to avoid. Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/gadget.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 9fde48656044..064d5161c483 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -1437,6 +1437,11 @@ static int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req) &req->request, req->dep->name)) return -EINVAL; + if (WARN(req->status < DWC3_REQUEST_STATUS_COMPLETED, + "%s: request %pK already in flight\n", + dep->name, &req->request)) + return -EINVAL; + pm_runtime_get(dwc->dev); req->request.actual = 0; -- cgit From 7c3d7dc89e57a1d43acea935882dd8713c9e639f Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Fri, 11 Jan 2019 13:03:27 +0200 Subject: usb: dwc3: gadget: remove req->started flag Now that we have req->status, we don't need this extra flag anymore. It's safe to remove it. Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/core.h | 2 -- drivers/usb/dwc3/gadget.c | 1 - drivers/usb/dwc3/gadget.h | 2 -- 3 files changed, 5 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index 5c3ee741541f..96794c301a6b 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -872,7 +872,6 @@ struct dwc3_hwparams { * or unaligned OUT) * @direction: IN or OUT direction flag * @mapped: true when request has been dma-mapped - * @started: request is started */ struct dwc3_request { struct usb_request request; @@ -901,7 +900,6 @@ struct dwc3_request { unsigned needs_extra_trb:1; unsigned direction:1; unsigned mapped:1; - unsigned started:1; }; /* diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 064d5161c483..189605df6bd2 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -174,7 +174,6 @@ static void dwc3_gadget_del_and_unmap_request(struct dwc3_ep *dep, { struct dwc3 *dwc = dep->dwc; - req->started = false; list_del(&req->list); req->remaining = 0; req->needs_extra_trb = false; diff --git a/drivers/usb/dwc3/gadget.h b/drivers/usb/dwc3/gadget.h index 6aebe8c0eae1..3ed738e86ea7 100644 --- a/drivers/usb/dwc3/gadget.h +++ b/drivers/usb/dwc3/gadget.h @@ -75,7 +75,6 @@ static inline void dwc3_gadget_move_started_request(struct dwc3_request *req) { struct dwc3_ep *dep = req->dep; - req->started = true; req->status = DWC3_REQUEST_STATUS_STARTED; list_move_tail(&req->list, &dep->started_list); } @@ -91,7 +90,6 @@ static inline void dwc3_gadget_move_cancelled_request(struct dwc3_request *req) { struct dwc3_ep *dep = req->dep; - req->started = false; req->status = DWC3_REQUEST_STATUS_CANCELLED; list_move_tail(&req->list, &dep->cancelled_list); } -- cgit From 1e19cdc8060227b0802bda6bc0bd22b23679ba32 Mon Sep 17 00:00:00 2001 From: Tejas Joglekar Date: Tue, 22 Jan 2019 13:26:51 +0530 Subject: usb: dwc3: gadget: Handle 0 xfer length for OUT EP For OUT endpoints, zero-length transfers require MaxPacketSize buffer as per the DWC_usb3 programming guide 3.30a section 4.2.3.3. This patch fixes this by explicitly checking zero length transfer to correctly pad up to MaxPacketSize. Fixes: c6267a51639b ("usb: dwc3: gadget: align transfers to wMaxPacketSize") Cc: stable@vger.kernel.org Signed-off-by: Tejas Joglekar Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/gadget.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index bed2ff42780b..6c9b76bcc2e1 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -1119,7 +1119,7 @@ static void dwc3_prepare_one_trb_linear(struct dwc3_ep *dep, unsigned int maxp = usb_endpoint_maxp(dep->endpoint.desc); unsigned int rem = length % maxp; - if (rem && usb_endpoint_dir_out(dep->endpoint.desc)) { + if ((!length || rem) && usb_endpoint_dir_out(dep->endpoint.desc)) { struct dwc3 *dwc = dep->dwc; struct dwc3_trb *trb; -- cgit From 07c69f1148da7de3978686d3af9263325d9d60bd Mon Sep 17 00:00:00 2001 From: "Gustavo A. R. Silva" Date: Tue, 22 Jan 2019 15:28:08 -0600 Subject: usb: gadget: udc: net2272: Fix bitwise and boolean operations (!x & y) strikes again. Fix bitwise and boolean operations by enclosing the expression: intcsr & (1 << NET2272_PCI_IRQ) in parentheses, before applying the boolean operator '!'. Notice that this code has been there since 2011. So, it would be helpful if someone can double-check this. This issue was detected with the help of Coccinelle. Fixes: ceb80363b2ec ("USB: net2272: driver for PLX NET2272 USB device controller") Cc: stable@vger.kernel.org Signed-off-by: Gustavo A. R. Silva Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/net2272.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/udc/net2272.c b/drivers/usb/gadget/udc/net2272.c index 660878a19505..b77f3126580e 100644 --- a/drivers/usb/gadget/udc/net2272.c +++ b/drivers/usb/gadget/udc/net2272.c @@ -2083,7 +2083,7 @@ static irqreturn_t net2272_irq(int irq, void *_dev) #if defined(PLX_PCI_RDK2) /* see if PCI int for us by checking irqstat */ intcsr = readl(dev->rdk2.fpga_base_addr + RDK2_IRQSTAT); - if (!intcsr & (1 << NET2272_PCI_IRQ)) { + if (!(intcsr & (1 << NET2272_PCI_IRQ))) { spin_unlock(&dev->lock); return IRQ_NONE; } -- cgit From f2105d42597f4d10e431b195d69e96dccaf9b012 Mon Sep 17 00:00:00 2001 From: Anders Roxell Date: Tue, 22 Jan 2019 11:36:02 +0100 Subject: usb: phy: fix link errors Fix link errors when CONFIG_FSL_USB2_OTG is enabled and USB_OTG_FSM is set to module then the following link error occurs. aarch64-linux-gnu-ld: drivers/usb/phy/phy-fsl-usb.o: in function `fsl_otg_ioctl': drivers/usb/phy/phy-fsl-usb.c:1083: undefined reference to `otg_statemachine' aarch64-linux-gnu-ld: drivers/usb/phy/phy-fsl-usb.c:1083:(.text+0x574): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `otg_statemachine' aarch64-linux-gnu-ld: drivers/usb/phy/phy-fsl-usb.o: in function `fsl_otg_start_srp': drivers/usb/phy/phy-fsl-usb.c:674: undefined reference to `otg_statemachine' aarch64-linux-gnu-ld: drivers/usb/phy/phy-fsl-usb.c:674:(.text+0x61c): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `otg_statemachine' aarch64-linux-gnu-ld: drivers/usb/phy/phy-fsl-usb.o: in function `fsl_otg_set_host': drivers/usb/phy/phy-fsl-usb.c:593: undefined reference to `otg_statemachine' aarch64-linux-gnu-ld: drivers/usb/phy/phy-fsl-usb.c:593:(.text+0x7a4): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `otg_statemachine' aarch64-linux-gnu-ld: drivers/usb/phy/phy-fsl-usb.o: in function `fsl_otg_start_hnp': drivers/usb/phy/phy-fsl-usb.c:695: undefined reference to `otg_statemachine' aarch64-linux-gnu-ld: drivers/usb/phy/phy-fsl-usb.c:695:(.text+0x858): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `otg_statemachine' aarch64-linux-gnu-ld: drivers/usb/phy/phy-fsl-usb.o: in function `a_wait_enum': drivers/usb/phy/phy-fsl-usb.c:274: undefined reference to `otg_statemachine' aarch64-linux-gnu-ld: drivers/usb/phy/phy-fsl-usb.c:274:(.text+0x16f0): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `otg_statemachine' aarch64-linux-gnu-ld: drivers/usb/phy/phy-fsl-usb.o:drivers/usb/phy/phy-fsl-usb.c:619: more undefined references to `otg_statemachine' follow aarch64-linux-gnu-ld: drivers/usb/phy/phy-fsl-usb.o: in function `fsl_otg_set_peripheral': drivers/usb/phy/phy-fsl-usb.c:619:(.text+0x1fa0): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `otg_statemachine' make[1]: *** [Makefile:1020: vmlinux] Error 1 make[1]: Target 'Image' not remade because of errors. make: *** [Makefile:152: sub-make] Error 2 make: Target 'Image' not remade because of errors. Rework so that FSL_USB2_OTG depends on that the USB_OTG_FSM is builtin. Signed-off-by: Anders Roxell Signed-off-by: Felipe Balbi --- drivers/usb/phy/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/phy/Kconfig b/drivers/usb/phy/Kconfig index d7312eed6088..91ea3083e7ad 100644 --- a/drivers/usb/phy/Kconfig +++ b/drivers/usb/phy/Kconfig @@ -21,7 +21,7 @@ config AB8500_USB config FSL_USB2_OTG bool "Freescale USB OTG Transceiver Driver" - depends on USB_EHCI_FSL && USB_FSL_USB2 && USB_OTG_FSM && PM + depends on USB_EHCI_FSL && USB_FSL_USB2 && USB_OTG_FSM=y && PM depends on USB_GADGET || !USB_GADGET # if USB_GADGET=m, this can't be 'y' select USB_PHY help -- cgit From 512e6fb589bc18f9321457632e89b95017447db9 Mon Sep 17 00:00:00 2001 From: Alexey Khoroshilov Date: Tue, 22 Jan 2019 00:23:50 +0300 Subject: usb: dwc3: exynos: Fix error handling of clk_prepare_enable If clk_prepare_enable() fails in dwc3_exynos_probe() or in dwc3_exynos_resume(), exynos->clks[0] is left undisabled because of usage preincrement in while condition. Found by Linux Driver Verification project (linuxtesting.org). Fixes: 9f2168367a0a ("usb: dwc3: exynos: Rework clock handling and prepare for new variants") Acked-by: Marek Szyprowski Signed-off-by: Alexey Khoroshilov Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/dwc3-exynos.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/dwc3-exynos.c b/drivers/usb/dwc3/dwc3-exynos.c index cb7fcd7c0ad8..c1e9ea621f41 100644 --- a/drivers/usb/dwc3/dwc3-exynos.c +++ b/drivers/usb/dwc3/dwc3-exynos.c @@ -78,7 +78,7 @@ static int dwc3_exynos_probe(struct platform_device *pdev) for (i = 0; i < exynos->num_clks; i++) { ret = clk_prepare_enable(exynos->clks[i]); if (ret) { - while (--i > 0) + while (i-- > 0) clk_disable_unprepare(exynos->clks[i]); return ret; } @@ -223,7 +223,7 @@ static int dwc3_exynos_resume(struct device *dev) for (i = 0; i < exynos->num_clks; i++) { ret = clk_prepare_enable(exynos->clks[i]); if (ret) { - while (--i > 0) + while (i-- > 0) clk_disable_unprepare(exynos->clks[i]); return ret; } -- cgit From a53469a68eb886e84dd8b69a1458a623d3591793 Mon Sep 17 00:00:00 2001 From: Bin Liu Date: Wed, 16 Jan 2019 11:54:07 -0600 Subject: usb: phy: am335x: fix race condition in _probe power off the phy should be done before populate the phy. Otherwise, am335x_init() could be called by the phy owner to power on the phy first, then am335x_phy_probe() turns off the phy again without the caller knowing it. Fixes: 2fc711d76352 ("usb: phy: am335x: Enable USB remote wakeup using PHY wakeup") Cc: stable@vger.kernel.org # v3.18+ Signed-off-by: Bin Liu Signed-off-by: Felipe Balbi --- drivers/usb/phy/phy-am335x.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/phy/phy-am335x.c b/drivers/usb/phy/phy-am335x.c index 27bdb7222527..f5f0568d8533 100644 --- a/drivers/usb/phy/phy-am335x.c +++ b/drivers/usb/phy/phy-am335x.c @@ -61,9 +61,6 @@ static int am335x_phy_probe(struct platform_device *pdev) if (ret) return ret; - ret = usb_add_phy_dev(&am_phy->usb_phy_gen.phy); - if (ret) - return ret; am_phy->usb_phy_gen.phy.init = am335x_init; am_phy->usb_phy_gen.phy.shutdown = am335x_shutdown; @@ -82,7 +79,7 @@ static int am335x_phy_probe(struct platform_device *pdev) device_set_wakeup_enable(dev, false); phy_ctrl_power(am_phy->phy_ctrl, am_phy->id, am_phy->dr_mode, false); - return 0; + return usb_add_phy_dev(&am_phy->usb_phy_gen.phy); } static int am335x_phy_remove(struct platform_device *pdev) -- cgit From b97a31348379f7beed7664a8d4eab491e227c165 Mon Sep 17 00:00:00 2001 From: Miquel Raynal Date: Tue, 29 Jan 2019 10:23:40 +0100 Subject: usb: core: comply to PHY framework Current implementation of the USB core does not take into account the new PHY framework. Correct the situation by adding a call to phy_set_mode() before phy_power_on(). Signed-off-by: Miquel Raynal Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/hcd.c | 5 +++++ drivers/usb/core/phy.c | 28 ++++++++++++++++++++++++++++ drivers/usb/core/phy.h | 2 ++ 3 files changed, 35 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index 015b126ce455..86f39e44f98a 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -2736,6 +2736,11 @@ int usb_add_hcd(struct usb_hcd *hcd, if (retval) return retval; + retval = usb_phy_roothub_set_mode(hcd->phy_roothub, + PHY_MODE_USB_HOST_SS); + if (retval) + goto err_usb_phy_roothub_power_on; + retval = usb_phy_roothub_power_on(hcd->phy_roothub); if (retval) goto err_usb_phy_roothub_power_on; diff --git a/drivers/usb/core/phy.c b/drivers/usb/core/phy.c index 38b2c776c4b4..7580493b867a 100644 --- a/drivers/usb/core/phy.c +++ b/drivers/usb/core/phy.c @@ -123,6 +123,34 @@ int usb_phy_roothub_exit(struct usb_phy_roothub *phy_roothub) } EXPORT_SYMBOL_GPL(usb_phy_roothub_exit); +int usb_phy_roothub_set_mode(struct usb_phy_roothub *phy_roothub, + enum phy_mode mode) +{ + struct usb_phy_roothub *roothub_entry; + struct list_head *head; + int err; + + if (!phy_roothub) + return 0; + + head = &phy_roothub->list; + + list_for_each_entry(roothub_entry, head, list) { + err = phy_set_mode(roothub_entry->phy, mode); + if (err) + goto err_out; + } + + return 0; + +err_out: + list_for_each_entry_continue_reverse(roothub_entry, head, list) + phy_power_off(roothub_entry->phy); + + return err; +} +EXPORT_SYMBOL_GPL(usb_phy_roothub_set_mode); + int usb_phy_roothub_power_on(struct usb_phy_roothub *phy_roothub) { struct usb_phy_roothub *roothub_entry; diff --git a/drivers/usb/core/phy.h b/drivers/usb/core/phy.h index 88a3c037e9df..dad564e2d2d4 100644 --- a/drivers/usb/core/phy.h +++ b/drivers/usb/core/phy.h @@ -16,6 +16,8 @@ struct usb_phy_roothub *usb_phy_roothub_alloc(struct device *dev); int usb_phy_roothub_init(struct usb_phy_roothub *phy_roothub); int usb_phy_roothub_exit(struct usb_phy_roothub *phy_roothub); +int usb_phy_roothub_set_mode(struct usb_phy_roothub *phy_roothub, + enum phy_mode mode); int usb_phy_roothub_power_on(struct usb_phy_roothub *phy_roothub); void usb_phy_roothub_power_off(struct usb_phy_roothub *phy_roothub); -- cgit From 12453a897e36665d75f1d7b722159ae1eeadf81c Mon Sep 17 00:00:00 2001 From: Ofer Heifetz Date: Tue, 29 Jan 2019 10:23:41 +0100 Subject: usb: host: xhci: mvebu: add reset on resume quirk The mvebu xHCI host driver does not have suspend/resume support. Use of the XHCI_RESET_ON_RESUME quirk is mandatory in order to avoid failures after resume. This will work only if no USB device is plugged-in. While at it, mention in the Kconfig file that this IP is also present on the A3700 SoC. Signed-off-by: Ofer Heifetz [miquel.raynal@bootlin.com: Reword the commit message] Signed-off-by: Miquel Raynal Reviewed-by: Gregory CLEMENT Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/Kconfig | 4 ++-- drivers/usb/host/xhci-mvebu.c | 11 +++++++++++ drivers/usb/host/xhci-mvebu.h | 6 ++++++ drivers/usb/host/xhci-plat.c | 7 +++++++ 4 files changed, 26 insertions(+), 2 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig index 29e8a56d8d82..d809671c5fea 100644 --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -70,13 +70,13 @@ config USB_XHCI_MTK If unsure, say N. config USB_XHCI_MVEBU - tristate "xHCI support for Marvell Armada 375/38x" + tristate "xHCI support for Marvell Armada 375/38x/37xx" select USB_XHCI_PLATFORM depends on HAS_IOMEM depends on ARCH_MVEBU || COMPILE_TEST ---help--- Say 'Y' to enable the support for the xHCI host controller - found in Marvell Armada 375/38x ARM SOCs. + found in Marvell Armada 375/38x/37xx ARM SOCs. config USB_XHCI_RCAR tristate "xHCI support for Renesas R-Car SoCs" diff --git a/drivers/usb/host/xhci-mvebu.c b/drivers/usb/host/xhci-mvebu.c index 32e158568788..60651a50770f 100644 --- a/drivers/usb/host/xhci-mvebu.c +++ b/drivers/usb/host/xhci-mvebu.c @@ -13,6 +13,7 @@ #include #include "xhci-mvebu.h" +#include "xhci.h" #define USB3_MAX_WINDOWS 4 #define USB3_WIN_CTRL(w) (0x0 + ((w) * 8)) @@ -72,3 +73,13 @@ int xhci_mvebu_mbus_init_quirk(struct usb_hcd *hcd) return 0; } + +int xhci_mvebu_a3700_init_quirk(struct usb_hcd *hcd) +{ + struct xhci_hcd *xhci = hcd_to_xhci(hcd); + + /* Without reset on resume, the HC won't work at all */ + xhci->quirks |= XHCI_RESET_ON_RESUME; + + return 0; +} diff --git a/drivers/usb/host/xhci-mvebu.h b/drivers/usb/host/xhci-mvebu.h index 09791df2cec0..ca0a3a5721dd 100644 --- a/drivers/usb/host/xhci-mvebu.h +++ b/drivers/usb/host/xhci-mvebu.h @@ -12,10 +12,16 @@ struct usb_hcd; #if IS_ENABLED(CONFIG_USB_XHCI_MVEBU) int xhci_mvebu_mbus_init_quirk(struct usb_hcd *hcd); +int xhci_mvebu_a3700_init_quirk(struct usb_hcd *hcd); #else static inline int xhci_mvebu_mbus_init_quirk(struct usb_hcd *hcd) { return 0; } + +static inline int xhci_mvebu_a3700_init_quirk(struct usb_hcd *hcd) +{ + return 0; +} #endif #endif /* __LINUX_XHCI_MVEBU_H */ diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c index ef09cb06212f..0ac4ec975547 100644 --- a/drivers/usb/host/xhci-plat.c +++ b/drivers/usb/host/xhci-plat.c @@ -98,6 +98,10 @@ static const struct xhci_plat_priv xhci_plat_marvell_armada = { .init_quirk = xhci_mvebu_mbus_init_quirk, }; +static const struct xhci_plat_priv xhci_plat_marvell_armada3700 = { + .init_quirk = xhci_mvebu_a3700_init_quirk, +}; + static const struct xhci_plat_priv xhci_plat_renesas_rcar_gen2 = { .firmware_name = XHCI_RCAR_FIRMWARE_NAME_V1, .init_quirk = xhci_rcar_init_quirk, @@ -123,6 +127,9 @@ static const struct of_device_id usb_xhci_of_match[] = { }, { .compatible = "marvell,armada-380-xhci", .data = &xhci_plat_marvell_armada, + }, { + .compatible = "marvell,armada3700-xhci", + .data = &xhci_plat_marvell_armada3700, }, { .compatible = "renesas,xhci-r8a7790", .data = &xhci_plat_renesas_rcar_gen2, -- cgit From e04585184dcf792cd053d6ce84091201e45c2225 Mon Sep 17 00:00:00 2001 From: Miquel Raynal Date: Tue, 29 Jan 2019 10:23:42 +0100 Subject: usb: ehci-orion: avoid double PHY initialization No need to initialize the PHY from the driver's probe. It is done by the core automatically and doing it twice would increment the phy->powercount counter to 2 instead of 1. During later suspend operation, the counter will be decremented to one, no phy->power_off() will occur and worse than that, the following phy->power_on() at resume time will also be skipped, failing the whole S2RAM operation. Signed-off-by: Miquel Raynal Acked-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ehci-orion.c | 26 +++----------------------- 1 file changed, 3 insertions(+), 23 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/host/ehci-orion.c b/drivers/usb/host/ehci-orion.c index 1ad72647a069..3109f082949e 100644 --- a/drivers/usb/host/ehci-orion.c +++ b/drivers/usb/host/ehci-orion.c @@ -257,15 +257,7 @@ static int ehci_orion_drv_probe(struct platform_device *pdev) if (IS_ERR(priv->phy)) { err = PTR_ERR(priv->phy); if (err != -ENOSYS) - goto err_phy_get; - } else { - err = phy_init(priv->phy); - if (err) - goto err_phy_init; - - err = phy_power_on(priv->phy); - if (err) - goto err_phy_power_on; + goto err_dis_clk; } /* @@ -297,19 +289,12 @@ static int ehci_orion_drv_probe(struct platform_device *pdev) err = usb_add_hcd(hcd, irq, IRQF_SHARED); if (err) - goto err_add_hcd; + goto err_dis_clk; device_wakeup_enable(hcd->self.controller); return 0; -err_add_hcd: - if (!IS_ERR(priv->phy)) - phy_power_off(priv->phy); -err_phy_power_on: - if (!IS_ERR(priv->phy)) - phy_exit(priv->phy); -err_phy_init: -err_phy_get: +err_dis_clk: if (!IS_ERR(priv->clk)) clk_disable_unprepare(priv->clk); usb_put_hcd(hcd); @@ -327,11 +312,6 @@ static int ehci_orion_drv_remove(struct platform_device *pdev) usb_remove_hcd(hcd); - if (!IS_ERR(priv->phy)) { - phy_power_off(priv->phy); - phy_exit(priv->phy); - } - if (!IS_ERR(priv->clk)) clk_disable_unprepare(priv->clk); -- cgit From f91649c525880006c78e62f6bae4d802a590c3ba Mon Sep 17 00:00:00 2001 From: Miquel Raynal Date: Tue, 29 Jan 2019 10:23:43 +0100 Subject: usb: ehci-orion: add S2RAM support Add suspend/resume callbacks to reset the host controller properly during S2RAM operation. Signed-off-by: Miquel Raynal Acked-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ehci-orion.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/host/ehci-orion.c b/drivers/usb/host/ehci-orion.c index 3109f082949e..790acf3633e8 100644 --- a/drivers/usb/host/ehci-orion.c +++ b/drivers/usb/host/ehci-orion.c @@ -182,6 +182,23 @@ static int ehci_orion_drv_reset(struct usb_hcd *hcd) return ret; } +static int __maybe_unused ehci_orion_drv_suspend(struct device *dev) +{ + struct usb_hcd *hcd = dev_get_drvdata(dev); + + return ehci_suspend(hcd, device_may_wakeup(dev)); +} + +static int __maybe_unused ehci_orion_drv_resume(struct device *dev) +{ + struct usb_hcd *hcd = dev_get_drvdata(dev); + + return ehci_resume(hcd, false); +} + +static SIMPLE_DEV_PM_OPS(ehci_orion_pm_ops, ehci_orion_drv_suspend, + ehci_orion_drv_resume); + static const struct ehci_driver_overrides orion_overrides __initconst = { .extra_priv_size = sizeof(struct orion_ehci_hcd), .reset = ehci_orion_drv_reset, @@ -334,6 +351,7 @@ static struct platform_driver ehci_orion_driver = { .driver = { .name = "orion-ehci", .of_match_table = ehci_orion_dt_ids, + .pm = &ehci_orion_pm_ops, }, }; -- cgit From a2fd23b93733bf604870eb8a15ccaa74c9b23889 Mon Sep 17 00:00:00 2001 From: Shuah Khan Date: Fri, 25 Jan 2019 09:05:42 -0700 Subject: usbip: Fix vep_free_request() null pointer checks on input args Fix vep_free_request() to return when usb_ep and usb_request are null instead of calling WARN_ON. Signed-off-by: Shuah Khan Signed-off-by: Greg Kroah-Hartman --- drivers/usb/usbip/vudc_dev.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/usbip/vudc_dev.c b/drivers/usb/usbip/vudc_dev.c index 1634d8698e15..a72c17ff1c6a 100644 --- a/drivers/usb/usbip/vudc_dev.c +++ b/drivers/usb/usbip/vudc_dev.c @@ -297,7 +297,8 @@ static void vep_free_request(struct usb_ep *_ep, struct usb_request *_req) { struct vrequest *req; - if (WARN_ON(!_ep || !_req)) + /* ep is always valid here - see usb_ep_free_request() */ + if (!_req) return; req = to_vrequest(_req); -- cgit From c418fd6c01fbc5516a2cd1eaf1df1ec86869028a Mon Sep 17 00:00:00 2001 From: Paul Elder Date: Wed, 30 Jan 2019 08:13:21 -0600 Subject: usb: gadget: musb: fix short isoc packets with inventra dma Handling short packets (length < max packet size) in the Inventra DMA engine in the MUSB driver causes the MUSB DMA controller to hang. An example of a problem that is caused by this problem is when streaming video out of a UVC gadget, only the first video frame is transferred. For short packets (mode-0 or mode-1 DMA), MUSB_TXCSR_TXPKTRDY must be set manually by the driver. This was previously done in musb_g_tx (musb_gadget.c), but incorrectly (all csr flags were cleared, and only MUSB_TXCSR_MODE and MUSB_TXCSR_TXPKTRDY were set). Fixing that problem allows some requests to be transferred correctly, but multiple requests were often put together in one USB packet, and caused problems if the packet size was not a multiple of 4. Instead, set MUSB_TXCSR_TXPKTRDY in dma_controller_irq (musbhsdma.c), just like host mode transfers. This topic was originally tackled by Nicolas Boichat [0] [1] and is discussed further at [2] as part of his GSoC project [3]. [0] https://groups.google.com/forum/?hl=en#!topic/beagleboard-gsoc/k8Azwfp75CU [1] https://gitorious.org/beagleboard-usbsniffer/beagleboard-usbsniffer-kernel/commit/b0be3b6cc195ba732189b04f1d43ec843c3e54c9?p=beagleboard-usbsniffer:beagleboard-usbsniffer-kernel.git;a=patch;h=b0be3b6cc195ba732189b04f1d43ec843c3e54c9 [2] http://beagleboard-usbsniffer.blogspot.com/2010/07/musb-isochronous-transfers-fixed.html [3] http://elinux.org/BeagleBoard/GSoC/USBSniffer Fixes: 550a7375fe72 ("USB: Add MUSB and TUSB support") Signed-off-by: Paul Elder Signed-off-by: Bin Liu Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/musb/musb_gadget.c | 13 +------------ drivers/usb/musb/musbhsdma.c | 21 +++++++++++---------- 2 files changed, 12 insertions(+), 22 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/musb/musb_gadget.c b/drivers/usb/musb/musb_gadget.c index eae8b1b1b45b..ffe462a657b1 100644 --- a/drivers/usb/musb/musb_gadget.c +++ b/drivers/usb/musb/musb_gadget.c @@ -452,13 +452,10 @@ void musb_g_tx(struct musb *musb, u8 epnum) } if (request) { - u8 is_dma = 0; - bool short_packet = false; trace_musb_req_tx(req); if (dma && (csr & MUSB_TXCSR_DMAENAB)) { - is_dma = 1; csr |= MUSB_TXCSR_P_WZC_BITS; csr &= ~(MUSB_TXCSR_DMAENAB | MUSB_TXCSR_P_UNDERRUN | MUSB_TXCSR_TXPKTRDY | MUSB_TXCSR_AUTOSET); @@ -476,16 +473,8 @@ void musb_g_tx(struct musb *musb, u8 epnum) */ if ((request->zero && request->length) && (request->length % musb_ep->packet_sz == 0) - && (request->actual == request->length)) - short_packet = true; + && (request->actual == request->length)) { - if ((musb_dma_inventra(musb) || musb_dma_ux500(musb)) && - (is_dma && (!dma->desired_mode || - (request->actual & - (musb_ep->packet_sz - 1))))) - short_packet = true; - - if (short_packet) { /* * On DMA completion, FIFO may not be * available yet... diff --git a/drivers/usb/musb/musbhsdma.c b/drivers/usb/musb/musbhsdma.c index a688f7f87829..5fc6825745f2 100644 --- a/drivers/usb/musb/musbhsdma.c +++ b/drivers/usb/musb/musbhsdma.c @@ -346,12 +346,10 @@ static irqreturn_t dma_controller_irq(int irq, void *private_data) channel->status = MUSB_DMA_STATUS_FREE; /* completed */ - if ((devctl & MUSB_DEVCTL_HM) - && (musb_channel->transmit) - && ((channel->desired_mode == 0) - || (channel->actual_len & - (musb_channel->max_packet_sz - 1))) - ) { + if (musb_channel->transmit && + (!channel->desired_mode || + (channel->actual_len % + musb_channel->max_packet_sz))) { u8 epnum = musb_channel->epnum; int offset = musb->io.ep_offset(epnum, MUSB_TXCSR); @@ -363,11 +361,14 @@ static irqreturn_t dma_controller_irq(int irq, void *private_data) */ musb_ep_select(mbase, epnum); txcsr = musb_readw(mbase, offset); - txcsr &= ~(MUSB_TXCSR_DMAENAB + if (channel->desired_mode == 1) { + txcsr &= ~(MUSB_TXCSR_DMAENAB | MUSB_TXCSR_AUTOSET); - musb_writew(mbase, offset, txcsr); - /* Send out the packet */ - txcsr &= ~MUSB_TXCSR_DMAMODE; + musb_writew(mbase, offset, txcsr); + /* Send out the packet */ + txcsr &= ~MUSB_TXCSR_DMAMODE; + txcsr |= MUSB_TXCSR_DMAENAB; + } txcsr |= MUSB_TXCSR_TXPKTRDY; musb_writew(mbase, offset, txcsr); } -- cgit From a07ddce4df807e41a85245e769b6f6f14f0c6db0 Mon Sep 17 00:00:00 2001 From: Kyle Tso Date: Wed, 30 Jan 2019 11:13:53 +0800 Subject: usb: typec: tcpm: Correct the PPS out_volt calculation When Sink negotiates PPS, the voltage range of selected PPS APDO might not cover the previous voltage (out_volt). If the previous out_volt is lower than the new min_volt, the output voltage in RDO might be set to an invalid value. For instance, supposed that the previous voltage is 5V, and the new voltage range in the APDO is 7V-12V. Then the output voltage in the RDO should not be set to 5V which is lower than the possible min_volt 7V. Fix this by choosing the maximal value between the previous voltage and the new min_volt first. And ensure that this value will not exceed the new max_volt. The new out_volt will fall within the new voltage range while being the closest value compared to the previous out_volt. Signed-off-by: Kyle Tso Reviewed-by: Adam Thomson Reviewed-by: Guenter Roeck Reviewed-by: Heikki Krogerus Fixes: c710d0bb76ff0 ("usb: typec: tcpm: Extend the matching rules on PPS APDO selection") Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/tcpm/tcpm.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c index 4bc29b586698..f1c39a3c7534 100644 --- a/drivers/usb/typec/tcpm/tcpm.c +++ b/drivers/usb/typec/tcpm/tcpm.c @@ -2297,7 +2297,8 @@ static unsigned int tcpm_pd_select_pps_apdo(struct tcpm_port *port) pdo_pps_apdo_max_voltage(snk)); port->pps_data.max_curr = min_pps_apdo_current(src, snk); port->pps_data.out_volt = min(port->pps_data.max_volt, - port->pps_data.out_volt); + max(port->pps_data.min_volt, + port->pps_data.out_volt)); port->pps_data.op_curr = min(port->pps_data.max_curr, port->pps_data.op_curr); } -- cgit From acbfa6c26f21a18830ee064b588c92334305b6af Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Mon, 21 Jan 2019 12:58:27 +0200 Subject: usb: dwc3: gadget: clear DWC3_EP_TRANSFER_STARTED on cmd complete We must wait until End Transfer completes in order to clear DWC3_EP_TRANSFER_STARTED, otherwise we may confuse the driver. This patch is in preparation to fix a rare race condition that happens upon Disconnect Interrupt. Tested-by: Thinh Nguyen Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/gadget.c | 19 +++++-------------- 1 file changed, 5 insertions(+), 14 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 189605df6bd2..f9b44302199a 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -384,19 +384,9 @@ int dwc3_send_gadget_ep_cmd(struct dwc3_ep *dep, unsigned cmd, trace_dwc3_gadget_ep_cmd(dep, cmd, params, cmd_status); - if (ret == 0) { - switch (DWC3_DEPCMD_CMD(cmd)) { - case DWC3_DEPCMD_STARTTRANSFER: - dep->flags |= DWC3_EP_TRANSFER_STARTED; - dwc3_gadget_ep_get_transfer_index(dep); - break; - case DWC3_DEPCMD_ENDTRANSFER: - dep->flags &= ~DWC3_EP_TRANSFER_STARTED; - break; - default: - /* nothing */ - break; - } + if (ret == 0 && DWC3_DEPCMD_CMD(cmd) == DWC3_DEPCMD_STARTTRANSFER) { + dep->flags |= DWC3_EP_TRANSFER_STARTED; + dwc3_gadget_ep_get_transfer_index(dep); } if (saved_config) { @@ -2578,7 +2568,8 @@ static void dwc3_endpoint_interrupt(struct dwc3 *dwc, cmd = DEPEVT_PARAMETER_CMD(event->parameters); if (cmd == DWC3_DEPCMD_ENDTRANSFER) { - dep->flags &= ~DWC3_EP_END_TRANSFER_PENDING; + dep->flags &= ~(DWC3_EP_END_TRANSFER_PENDING | + DWC3_EP_TRANSFER_STARTED); dwc3_gadget_ep_cleanup_cancelled_requests(dep); } break; -- cgit From 0ce26a1c31ca928df4dfc7504c8898b71ff9f5d5 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Fri, 1 Feb 2019 17:24:52 -0600 Subject: PCI: Move Rohm Vendor ID to generic list Move the Rohm Vendor ID to pci_ids.h instead of defining it in several drivers. Signed-off-by: Andy Shevchenko Signed-off-by: Bjorn Helgaas Acked-by: Mark Brown Acked-by: Linus Walleij --- drivers/usb/gadget/udc/pch_udc.c | 1 - 1 file changed, 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/udc/pch_udc.c b/drivers/usb/gadget/udc/pch_udc.c index 55c8c8abeacd..cded51f36fc1 100644 --- a/drivers/usb/gadget/udc/pch_udc.c +++ b/drivers/usb/gadget/udc/pch_udc.c @@ -368,7 +368,6 @@ struct pch_udc_dev { #define PCI_DEVICE_ID_INTEL_QUARK_X1000_UDC 0x0939 #define PCI_DEVICE_ID_INTEL_EG20T_UDC 0x8808 -#define PCI_VENDOR_ID_ROHM 0x10DB #define PCI_DEVICE_ID_ML7213_IOH_UDC 0x801D #define PCI_DEVICE_ID_ML7831_IOH_UDC 0x8808 -- cgit From 974a1368c33ebb09c94c9ec1b523908cc7ca068f Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Mon, 21 Jan 2019 13:00:03 +0200 Subject: usb: dwc3: gadget: don't use resource_index as a flag We have a proper flag for testing that we have a valid transfer in flight, let's use that instead. This patch is in preparation to fix a rare race condition that happens upon Disconnect Interrupt. Tested-by: Thinh Nguyen Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/gadget.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index f9b44302199a..eaeea8ff5191 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -2626,8 +2626,8 @@ static void dwc3_stop_active_transfer(struct dwc3_ep *dep, bool force) u32 cmd; int ret; - if ((dep->flags & DWC3_EP_END_TRANSFER_PENDING) || - !dep->resource_index) + if ((dep->flags & DWC3_EP_END_TRANSFER_PENDING) + || !(dep->flags & DWC3_EP_TRANSFER_STARTED)) return; /* -- cgit From 9f45581f5eec6786c6eded2b3c85345d82a910c9 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Mon, 21 Jan 2019 13:01:16 +0200 Subject: usb: dwc3: gadget: early giveback if End Transfer already completed There is a rare race condition that may happen during a Disconnect Interrupt if we have a started request that happens to be dequeued *after* completion of End Transfer command. If that happens, that request will be left waiting for completion of an End Transfer command that will never happen. If End Transfer command has already completed before, we are safe to giveback the request straight away. Tested-by: Thinh Nguyen Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/gadget.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index eaeea8ff5191..b82a8885747d 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -1550,7 +1550,10 @@ static int dwc3_gadget_ep_dequeue(struct usb_ep *ep, goto out0; dwc3_gadget_move_cancelled_request(req); - goto out0; + if (dep->flags & DWC3_EP_TRANSFER_STARTED) + goto out0; + else + goto out1; } dev_err(dwc->dev, "request %pK was not queued to %s\n", request, ep->name); @@ -1558,6 +1561,7 @@ static int dwc3_gadget_ep_dequeue(struct usb_ep *ep, goto out0; } +out1: dwc3_gadget_giveback(dep, req, -ECONNRESET); out0: -- cgit From 3aec99154db3a95572bb92aa470589585e37df06 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Mon, 21 Jan 2019 13:08:44 +0200 Subject: usb: dwc3: gadget: remove DWC3_EP_END_TRANSFER_PENDING Now that we modified the code to fix a race condition, it's clear that DWC3_EP_END_TRANSFER_PENDING is unnecessary, considering that DWC3_EP_TRANSFER_STARTED will remain set until End Transfer completes. Tested-by: Thinh Nguyen Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/core.h | 1 - drivers/usb/dwc3/gadget.c | 15 +++++---------- drivers/usb/dwc3/trace.h | 3 +-- 3 files changed, 6 insertions(+), 13 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index 96794c301a6b..1528d395b156 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -692,7 +692,6 @@ struct dwc3_ep { #define DWC3_EP_WEDGE BIT(2) #define DWC3_EP_TRANSFER_STARTED BIT(3) #define DWC3_EP_PENDING_REQUEST BIT(5) -#define DWC3_EP_END_TRANSFER_PENDING BIT(7) /* This last one is specific to EP0 */ #define DWC3_EP0_DIR_IN BIT(31) diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index b82a8885747d..8425b6dab875 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -632,7 +632,6 @@ static int __dwc3_gadget_ep_enable(struct dwc3_ep *dep, unsigned int action) dep->type = usb_endpoint_type(desc); dep->flags |= DWC3_EP_ENABLED; - dep->flags &= ~DWC3_EP_END_TRANSFER_PENDING; reg = dwc3_readl(dwc->regs, DWC3_DALEPENA); reg |= DWC3_DALEPENA_EP(dep->number); @@ -738,7 +737,7 @@ static int __dwc3_gadget_ep_disable(struct dwc3_ep *dep) dep->stream_capable = false; dep->type = 0; - dep->flags &= DWC3_EP_END_TRANSFER_PENDING; + dep->flags = 0; /* Clear out the ep descriptors for non-ep0 */ if (dep->number > 1) { @@ -2548,7 +2547,7 @@ static void dwc3_endpoint_interrupt(struct dwc3 *dwc, dep = dwc->eps[epnum]; if (!(dep->flags & DWC3_EP_ENABLED)) { - if (!(dep->flags & DWC3_EP_END_TRANSFER_PENDING)) + if (!(dep->flags & DWC3_EP_TRANSFER_STARTED)) return; /* Handle only EPCMDCMPLT when EP disabled */ @@ -2572,8 +2571,7 @@ static void dwc3_endpoint_interrupt(struct dwc3 *dwc, cmd = DEPEVT_PARAMETER_CMD(event->parameters); if (cmd == DWC3_DEPCMD_ENDTRANSFER) { - dep->flags &= ~(DWC3_EP_END_TRANSFER_PENDING | - DWC3_EP_TRANSFER_STARTED); + dep->flags &= ~DWC3_EP_TRANSFER_STARTED; dwc3_gadget_ep_cleanup_cancelled_requests(dep); } break; @@ -2630,8 +2628,7 @@ static void dwc3_stop_active_transfer(struct dwc3_ep *dep, bool force) u32 cmd; int ret; - if ((dep->flags & DWC3_EP_END_TRANSFER_PENDING) - || !(dep->flags & DWC3_EP_TRANSFER_STARTED)) + if (!(dep->flags & DWC3_EP_TRANSFER_STARTED)) return; /* @@ -2674,10 +2671,8 @@ static void dwc3_stop_active_transfer(struct dwc3_ep *dep, bool force) WARN_ON_ONCE(ret); dep->resource_index = 0; - if (dwc3_is_usb31(dwc) || dwc->revision < DWC3_REVISION_310A) { - dep->flags |= DWC3_EP_END_TRANSFER_PENDING; + if (dwc3_is_usb31(dwc) || dwc->revision < DWC3_REVISION_310A) udelay(100); - } } static void dwc3_clear_stall_all_ep(struct dwc3 *dwc) diff --git a/drivers/usb/dwc3/trace.h b/drivers/usb/dwc3/trace.h index e97a00593dda..3a2f2c319c9a 100644 --- a/drivers/usb/dwc3/trace.h +++ b/drivers/usb/dwc3/trace.h @@ -305,7 +305,7 @@ DECLARE_EVENT_CLASS(dwc3_log_ep, __entry->trb_enqueue = dep->trb_enqueue; __entry->trb_dequeue = dep->trb_dequeue; ), - TP_printk("%s: mps %d/%d streams %d burst %d ring %d/%d flags %c:%c%c%c%c:%c:%c", + TP_printk("%s: mps %d/%d streams %d burst %d ring %d/%d flags %c:%c%c%c%c:%c", __get_str(name), __entry->maxpacket, __entry->maxpacket_limit, __entry->max_streams, __entry->maxburst, __entry->trb_enqueue, @@ -315,7 +315,6 @@ DECLARE_EVENT_CLASS(dwc3_log_ep, __entry->flags & DWC3_EP_WEDGE ? 'W' : 'w', __entry->flags & DWC3_EP_TRANSFER_STARTED ? 'B' : 'b', __entry->flags & DWC3_EP_PENDING_REQUEST ? 'P' : 'p', - __entry->flags & DWC3_EP_END_TRANSFER_PENDING ? 'E' : 'e', __entry->direction ? '<' : '>' ) ); -- cgit From 1760435d613c9ee536eaf40ffa97958c3e1973fe Mon Sep 17 00:00:00 2001 From: Suwan Kim Date: Wed, 30 Jan 2019 23:48:28 +0900 Subject: usb: core: Move variable initialization to appropriate place It is better to initialize the variable 'cfgno' in the for loop than at the current place. Signed-off-by: Suwan Kim Acked-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/config.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/core/config.c b/drivers/usb/core/config.c index 4a0945c04b4c..7bb6b1bd06c8 100644 --- a/drivers/usb/core/config.c +++ b/drivers/usb/core/config.c @@ -805,7 +805,6 @@ int usb_get_configuration(struct usb_device *dev) unsigned char *bigbuffer; struct usb_config_descriptor *desc; - cfgno = 0; if (ncfg > USB_MAXCONFIG) { dev_warn(ddev, "too many configurations: %d, " "using maximum allowed: %d\n", ncfg, USB_MAXCONFIG); @@ -831,7 +830,7 @@ int usb_get_configuration(struct usb_device *dev) if (!desc) goto err2; - for (; cfgno < ncfg; cfgno++) { + for (cfgno = 0; cfgno < ncfg; cfgno++) { /* We grab just the first descriptor so we know how long * the whole configuration is */ result = usb_get_descriptor(dev, USB_DT_CONFIG, cfgno, -- cgit From 7790b3556fccc555ae422f1576e97bf34c8ab8b6 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Mon, 4 Feb 2019 15:43:38 +0200 Subject: usb: dwc3: trace: pass trace buffer size to decoding functions Instead of assuming that our buffer is big enough, let's pass the buffer size around so printing functions can make sure they won't overflow the buffer. Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/debug.h | 142 +++++++++++++++++++++++++---------------------- drivers/usb/dwc3/trace.h | 7 ++- 2 files changed, 80 insertions(+), 69 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/debug.h b/drivers/usb/dwc3/debug.h index 4f75ab3505b7..e925a6b73005 100644 --- a/drivers/usb/dwc3/debug.h +++ b/drivers/usb/dwc3/debug.h @@ -193,65 +193,69 @@ static inline const char *dwc3_ep0_state_string(enum dwc3_ep0_state state) * dwc3_gadget_event_string - returns event name * @event: the event code */ -static inline const char * -dwc3_gadget_event_string(char *str, const struct dwc3_event_devt *event) +static inline const char *dwc3_gadget_event_string(char *str, size_t size, + const struct dwc3_event_devt *event) { enum dwc3_link_state state = event->event_info & DWC3_LINK_STATE_MASK; switch (event->type) { case DWC3_DEVICE_EVENT_DISCONNECT: - sprintf(str, "Disconnect: [%s]", + snprintf(str, size, "Disconnect: [%s]", dwc3_gadget_link_string(state)); break; case DWC3_DEVICE_EVENT_RESET: - sprintf(str, "Reset [%s]", dwc3_gadget_link_string(state)); + snprintf(str, size, "Reset [%s]", + dwc3_gadget_link_string(state)); break; case DWC3_DEVICE_EVENT_CONNECT_DONE: - sprintf(str, "Connection Done [%s]", + snprintf(str, size, "Connection Done [%s]", dwc3_gadget_link_string(state)); break; case DWC3_DEVICE_EVENT_LINK_STATUS_CHANGE: - sprintf(str, "Link Change [%s]", + snprintf(str, size, "Link Change [%s]", dwc3_gadget_link_string(state)); break; case DWC3_DEVICE_EVENT_WAKEUP: - sprintf(str, "WakeUp [%s]", dwc3_gadget_link_string(state)); + snprintf(str, size, "WakeUp [%s]", + dwc3_gadget_link_string(state)); break; case DWC3_DEVICE_EVENT_EOPF: - sprintf(str, "End-Of-Frame [%s]", + snprintf(str, size, "End-Of-Frame [%s]", dwc3_gadget_link_string(state)); break; case DWC3_DEVICE_EVENT_SOF: - sprintf(str, "Start-Of-Frame [%s]", + snprintf(str, size, "Start-Of-Frame [%s]", dwc3_gadget_link_string(state)); break; case DWC3_DEVICE_EVENT_ERRATIC_ERROR: - sprintf(str, "Erratic Error [%s]", + snprintf(str, size, "Erratic Error [%s]", dwc3_gadget_link_string(state)); break; case DWC3_DEVICE_EVENT_CMD_CMPL: - sprintf(str, "Command Complete [%s]", + snprintf(str, size, "Command Complete [%s]", dwc3_gadget_link_string(state)); break; case DWC3_DEVICE_EVENT_OVERFLOW: - sprintf(str, "Overflow [%s]", dwc3_gadget_link_string(state)); + snprintf(str, size, "Overflow [%s]", + dwc3_gadget_link_string(state)); break; default: - sprintf(str, "UNKNOWN"); + snprintf(str, size, "UNKNOWN"); } return str; } -static inline void dwc3_decode_get_status(__u8 t, __u16 i, __u16 l, char *str) +static inline void dwc3_decode_get_status(__u8 t, __u16 i, __u16 l, char *str, + size_t size) { switch (t & USB_RECIP_MASK) { case USB_RECIP_INTERFACE: - sprintf(str, "Get Interface Status(Intf = %d, Length = %d)", - i, l); + snprintf(str, size, "Get Interface Status(Intf = %d, Length = %d)", + i, l); break; case USB_RECIP_ENDPOINT: - sprintf(str, "Get Endpoint Status(ep%d%s)", + snprintf(str, size, "Get Endpoint Status(ep%d%s)", i & ~USB_DIR_IN, i & USB_DIR_IN ? "in" : "out"); break; @@ -259,11 +263,11 @@ static inline void dwc3_decode_get_status(__u8 t, __u16 i, __u16 l, char *str) } static inline void dwc3_decode_set_clear_feature(__u8 t, __u8 b, __u16 v, - __u16 i, char *str) + __u16 i, char *str, size_t size) { switch (t & USB_RECIP_MASK) { case USB_RECIP_DEVICE: - sprintf(str, "%s Device Feature(%s%s)", + snprintf(str, size, "%s Device Feature(%s%s)", b == USB_REQ_CLEAR_FEATURE ? "Clear" : "Set", ({char *s; switch (v) { @@ -311,13 +315,13 @@ static inline void dwc3_decode_set_clear_feature(__u8 t, __u8 b, __u16 v, } s; }) : ""); break; case USB_RECIP_INTERFACE: - sprintf(str, "%s Interface Feature(%s)", + snprintf(str, size, "%s Interface Feature(%s)", b == USB_REQ_CLEAR_FEATURE ? "Clear" : "Set", v == USB_INTRF_FUNC_SUSPEND ? "Function Suspend" : "UNKNOWN"); break; case USB_RECIP_ENDPOINT: - sprintf(str, "%s Endpoint Feature(%s ep%d%s)", + snprintf(str, size, "%s Endpoint Feature(%s ep%d%s)", b == USB_REQ_CLEAR_FEATURE ? "Clear" : "Set", v == USB_ENDPOINT_HALT ? "Halt" : "UNKNOWN", i & ~USB_DIR_IN, @@ -326,15 +330,15 @@ static inline void dwc3_decode_set_clear_feature(__u8 t, __u8 b, __u16 v, } } -static inline void dwc3_decode_set_address(__u16 v, char *str) +static inline void dwc3_decode_set_address(__u16 v, char *str, size_t size) { - sprintf(str, "Set Address(Addr = %02x)", v); + snprintf(str, size, "Set Address(Addr = %02x)", v); } static inline void dwc3_decode_get_set_descriptor(__u8 t, __u8 b, __u16 v, - __u16 i, __u16 l, char *str) + __u16 i, __u16 l, char *str, size_t size) { - sprintf(str, "%s %s Descriptor(Index = %d, Length = %d)", + snprintf(str, size, "%s %s Descriptor(Index = %d, Length = %d)", b == USB_REQ_GET_DESCRIPTOR ? "Get" : "Set", ({ char *s; switch (v >> 8) { @@ -393,87 +397,92 @@ static inline void dwc3_decode_get_set_descriptor(__u8 t, __u8 b, __u16 v, } -static inline void dwc3_decode_get_configuration(__u16 l, char *str) +static inline void dwc3_decode_get_configuration(__u16 l, char *str, + size_t size) { - sprintf(str, "Get Configuration(Length = %d)", l); + snprintf(str, size, "Get Configuration(Length = %d)", l); } -static inline void dwc3_decode_set_configuration(__u8 v, char *str) +static inline void dwc3_decode_set_configuration(__u8 v, char *str, size_t size) { - sprintf(str, "Set Configuration(Config = %d)", v); + snprintf(str, size, "Set Configuration(Config = %d)", v); } -static inline void dwc3_decode_get_intf(__u16 i, __u16 l, char *str) +static inline void dwc3_decode_get_intf(__u16 i, __u16 l, char *str, + size_t size) { - sprintf(str, "Get Interface(Intf = %d, Length = %d)", i, l); + snprintf(str, size, "Get Interface(Intf = %d, Length = %d)", i, l); } -static inline void dwc3_decode_set_intf(__u8 v, __u16 i, char *str) +static inline void dwc3_decode_set_intf(__u8 v, __u16 i, char *str, size_t size) { - sprintf(str, "Set Interface(Intf = %d, Alt.Setting = %d)", i, v); + snprintf(str, size, "Set Interface(Intf = %d, Alt.Setting = %d)", i, v); } -static inline void dwc3_decode_synch_frame(__u16 i, __u16 l, char *str) +static inline void dwc3_decode_synch_frame(__u16 i, __u16 l, char *str, + size_t size) { - sprintf(str, "Synch Frame(Endpoint = %d, Length = %d)", i, l); + snprintf(str, size, "Synch Frame(Endpoint = %d, Length = %d)", i, l); } -static inline void dwc3_decode_set_sel(__u16 l, char *str) +static inline void dwc3_decode_set_sel(__u16 l, char *str, size_t size) { - sprintf(str, "Set SEL(Length = %d)", l); + snprintf(str, size, "Set SEL(Length = %d)", l); } -static inline void dwc3_decode_set_isoch_delay(__u8 v, char *str) +static inline void dwc3_decode_set_isoch_delay(__u8 v, char *str, size_t size) { - sprintf(str, "Set Isochronous Delay(Delay = %d ns)", v); + snprintf(str, size, "Set Isochronous Delay(Delay = %d ns)", v); } /** * dwc3_decode_ctrl - returns a string represetion of ctrl request */ -static inline const char *dwc3_decode_ctrl(char *str, __u8 bRequestType, - __u8 bRequest, __u16 wValue, __u16 wIndex, __u16 wLength) +static inline const char *dwc3_decode_ctrl(char *str, size_t size, + __u8 bRequestType, __u8 bRequest, __u16 wValue, __u16 wIndex, + __u16 wLength) { switch (bRequest) { case USB_REQ_GET_STATUS: - dwc3_decode_get_status(bRequestType, wIndex, wLength, str); + dwc3_decode_get_status(bRequestType, wIndex, wLength, str, + size); break; case USB_REQ_CLEAR_FEATURE: case USB_REQ_SET_FEATURE: dwc3_decode_set_clear_feature(bRequestType, bRequest, wValue, - wIndex, str); + wIndex, str, size); break; case USB_REQ_SET_ADDRESS: - dwc3_decode_set_address(wValue, str); + dwc3_decode_set_address(wValue, str, size); break; case USB_REQ_GET_DESCRIPTOR: case USB_REQ_SET_DESCRIPTOR: dwc3_decode_get_set_descriptor(bRequestType, bRequest, wValue, - wIndex, wLength, str); + wIndex, wLength, str, size); break; case USB_REQ_GET_CONFIGURATION: - dwc3_decode_get_configuration(wLength, str); + dwc3_decode_get_configuration(wLength, str, size); break; case USB_REQ_SET_CONFIGURATION: - dwc3_decode_set_configuration(wValue, str); + dwc3_decode_set_configuration(wValue, str, size); break; case USB_REQ_GET_INTERFACE: - dwc3_decode_get_intf(wIndex, wLength, str); + dwc3_decode_get_intf(wIndex, wLength, str, size); break; case USB_REQ_SET_INTERFACE: - dwc3_decode_set_intf(wValue, wIndex, str); + dwc3_decode_set_intf(wValue, wIndex, str, size); break; case USB_REQ_SYNCH_FRAME: - dwc3_decode_synch_frame(wIndex, wLength, str); + dwc3_decode_synch_frame(wIndex, wLength, str, size); break; case USB_REQ_SET_SEL: - dwc3_decode_set_sel(wLength, str); + dwc3_decode_set_sel(wLength, str, size); break; case USB_REQ_SET_ISOCH_DELAY: - dwc3_decode_set_isoch_delay(wValue, str); + dwc3_decode_set_isoch_delay(wValue, str, size); break; default: - sprintf(str, "%02x %02x %02x %02x %02x %02x %02x %02x", + snprintf(str, size, "%02x %02x %02x %02x %02x %02x %02x %02x", bRequestType, bRequest, cpu_to_le16(wValue) & 0xff, cpu_to_le16(wValue) >> 8, @@ -490,16 +499,15 @@ static inline const char *dwc3_decode_ctrl(char *str, __u8 bRequestType, * dwc3_ep_event_string - returns event name * @event: then event code */ -static inline const char * -dwc3_ep_event_string(char *str, const struct dwc3_event_depevt *event, - u32 ep0state) +static inline const char *dwc3_ep_event_string(char *str, size_t size, + const struct dwc3_event_depevt *event, u32 ep0state) { u8 epnum = event->endpoint_number; size_t len; int status; int ret; - ret = sprintf(str, "ep%d%s: ", epnum >> 1, + ret = snprintf(str, size, "ep%d%s: ", epnum >> 1, (epnum & 1) ? "in" : "out"); if (ret < 0) return "UNKNOWN"; @@ -509,7 +517,7 @@ dwc3_ep_event_string(char *str, const struct dwc3_event_depevt *event, switch (event->endpoint_event) { case DWC3_DEPEVT_XFERCOMPLETE: len = strlen(str); - sprintf(str + len, "Transfer Complete (%c%c%c)", + snprintf(str + len, size - len, "Transfer Complete (%c%c%c)", status & DEPEVT_STATUS_SHORT ? 'S' : 's', status & DEPEVT_STATUS_IOC ? 'I' : 'i', status & DEPEVT_STATUS_LST ? 'L' : 'l'); @@ -517,12 +525,13 @@ dwc3_ep_event_string(char *str, const struct dwc3_event_depevt *event, len = strlen(str); if (epnum <= 1) - sprintf(str + len, " [%s]", dwc3_ep0_state_string(ep0state)); + snprintf(str + len, size - len, " [%s]", + dwc3_ep0_state_string(ep0state)); break; case DWC3_DEPEVT_XFERINPROGRESS: len = strlen(str); - sprintf(str + len, "Transfer In Progress [%d] (%c%c%c)", + snprintf(str + len, size - len, "Transfer In Progress [%d] (%c%c%c)", event->parameters, status & DEPEVT_STATUS_SHORT ? 'S' : 's', status & DEPEVT_STATUS_IOC ? 'I' : 'i', @@ -531,7 +540,7 @@ dwc3_ep_event_string(char *str, const struct dwc3_event_depevt *event, case DWC3_DEPEVT_XFERNOTREADY: len = strlen(str); - sprintf(str + len, "Transfer Not Ready [%d]%s", + snprintf(str + len, size - len, "Transfer Not Ready [%d]%s", event->parameters, status & DEPEVT_STATUS_TRANSFER_ACTIVE ? " (Active)" : " (Not Active)"); @@ -557,7 +566,7 @@ dwc3_ep_event_string(char *str, const struct dwc3_event_depevt *event, switch (status) { case DEPEVT_STREAMEVT_FOUND: - sprintf(str + ret, " Stream %d Found", + snprintf(str + ret, size - ret, " Stream %d Found", event->parameters); break; case DEPEVT_STREAMEVT_NOTFOUND: @@ -571,7 +580,7 @@ dwc3_ep_event_string(char *str, const struct dwc3_event_depevt *event, strcat(str, "Endpoint Command Complete"); break; default: - sprintf(str, "UNKNOWN"); + snprintf(str, size, "UNKNOWN"); } return str; @@ -611,14 +620,15 @@ static inline const char *dwc3_gadget_event_type_string(u8 event) } } -static inline const char *dwc3_decode_event(char *str, u32 event, u32 ep0state) +static inline const char *dwc3_decode_event(char *str, size_t size, u32 event, + u32 ep0state) { const union dwc3_event evt = (union dwc3_event) event; if (evt.type.is_devspec) - return dwc3_gadget_event_string(str, &evt.devt); + return dwc3_gadget_event_string(str, size, &evt.devt); else - return dwc3_ep_event_string(str, &evt.depevt, ep0state); + return dwc3_ep_event_string(str, size, &evt.depevt, ep0state); } static inline const char *dwc3_ep_cmd_status_string(int status) diff --git a/drivers/usb/dwc3/trace.h b/drivers/usb/dwc3/trace.h index 3a2f2c319c9a..818a63da1a44 100644 --- a/drivers/usb/dwc3/trace.h +++ b/drivers/usb/dwc3/trace.h @@ -59,8 +59,8 @@ DECLARE_EVENT_CLASS(dwc3_log_event, __entry->ep0state = dwc->ep0state; ), TP_printk("event (%08x): %s", __entry->event, - dwc3_decode_event(__get_str(str), __entry->event, - __entry->ep0state)) + dwc3_decode_event(__get_str(str), DWC3_MSG_MAX, + __entry->event, __entry->ep0state)) ); DEFINE_EVENT(dwc3_log_event, dwc3_event, @@ -86,7 +86,8 @@ DECLARE_EVENT_CLASS(dwc3_log_ctrl, __entry->wIndex = le16_to_cpu(ctrl->wIndex); __entry->wLength = le16_to_cpu(ctrl->wLength); ), - TP_printk("%s", dwc3_decode_ctrl(__get_str(str), __entry->bRequestType, + TP_printk("%s", dwc3_decode_ctrl(__get_str(str), DWC3_MSG_MAX, + __entry->bRequestType, __entry->bRequest, __entry->wValue, __entry->wIndex, __entry->wLength) ) -- cgit From 15fb84b741966c8a08e02e145ec5932d51b6c4ad Mon Sep 17 00:00:00 2001 From: Icenowy Zheng Date: Mon, 28 Jan 2019 13:57:17 +0800 Subject: USB: serial: cp210x: add GPIO support for CP2104 The CP2104 chips feature 4 controllable GPIO pins, which are similar to the ones on CP2102N chip (output-only when push-pull, output or simulated input mode when open-drain). Add support for the GPIO pins for cp210x driver. The pin get/set routine is shared with CP2102N, but the pinconf initialization code is not shared because the acquisition of GPIO configuration in OTP ROM is similar to CP2105, not CP2102N. Signed-off-by: Icenowy Zheng Signed-off-by: Johan Hovold --- drivers/usb/serial/cp210x.c | 82 ++++++++++++++++++++++++++++++++++++++++++--- 1 file changed, 78 insertions(+), 4 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c index 336a3c0f9f2c..260c875dd263 100644 --- a/drivers/usb/serial/cp210x.c +++ b/drivers/usb/serial/cp210x.c @@ -443,10 +443,10 @@ struct cp210x_pin_mode { #define CP210X_PIN_MODE_GPIO BIT(0) /* - * CP210X_VENDOR_SPECIFIC, CP210X_GET_PORTCONFIG call reads these 0xf bytes. - * Structure needs padding due to unused/unspecified bytes. + * CP210X_VENDOR_SPECIFIC, CP210X_GET_PORTCONFIG call reads these 0xf bytes + * on a CP2105 chip. Structure needs padding due to unused/unspecified bytes. */ -struct cp210x_config { +struct cp210x_dual_port_config { __le16 gpio_mode; u8 __pad0[2]; __le16 reset_state; @@ -457,6 +457,19 @@ struct cp210x_config { u8 device_cfg; } __packed; +/* + * CP210X_VENDOR_SPECIFIC, CP210X_GET_PORTCONFIG call reads these 0xd bytes + * on a CP2104 chip. Structure needs padding due to unused/unspecified bytes. + */ +struct cp210x_single_port_config { + __le16 gpio_mode; + u8 __pad0[2]; + __le16 reset_state; + u8 __pad1[4]; + __le16 suspend_state; + u8 device_cfg; +} __packed; + /* GPIO modes */ #define CP210X_SCI_GPIO_MODE_OFFSET 9 #define CP210X_SCI_GPIO_MODE_MASK GENMASK(11, 9) @@ -464,11 +477,19 @@ struct cp210x_config { #define CP210X_ECI_GPIO_MODE_OFFSET 2 #define CP210X_ECI_GPIO_MODE_MASK GENMASK(3, 2) +#define CP210X_GPIO_MODE_OFFSET 8 +#define CP210X_GPIO_MODE_MASK GENMASK(11, 8) + /* CP2105 port configuration values */ #define CP2105_GPIO0_TXLED_MODE BIT(0) #define CP2105_GPIO1_RXLED_MODE BIT(1) #define CP2105_GPIO1_RS485_MODE BIT(2) +/* CP2104 port configuration values */ +#define CP2104_GPIO0_TXLED_MODE BIT(0) +#define CP2104_GPIO1_RXLED_MODE BIT(1) +#define CP2104_GPIO2_RS485_MODE BIT(2) + /* CP2102N configuration array indices */ #define CP210X_2NCONFIG_CONFIG_VERSION_IDX 2 #define CP210X_2NCONFIG_GPIO_MODE_IDX 581 @@ -1470,7 +1491,7 @@ static int cp2105_gpioconf_init(struct usb_serial *serial) { struct cp210x_serial_private *priv = usb_get_serial_data(serial); struct cp210x_pin_mode mode; - struct cp210x_config config; + struct cp210x_dual_port_config config; u8 intf_num = cp210x_interface_num(serial); u8 iface_config; int result; @@ -1529,6 +1550,56 @@ static int cp2105_gpioconf_init(struct usb_serial *serial) return 0; } +static int cp2104_gpioconf_init(struct usb_serial *serial) +{ + struct cp210x_serial_private *priv = usb_get_serial_data(serial); + struct cp210x_single_port_config config; + u8 iface_config; + u8 gpio_latch; + int result; + u8 i; + + result = cp210x_read_vendor_block(serial, REQTYPE_DEVICE_TO_HOST, + CP210X_GET_PORTCONFIG, &config, + sizeof(config)); + if (result < 0) + return result; + + priv->gc.ngpio = 4; + + iface_config = config.device_cfg; + priv->gpio_pushpull = (u8)((le16_to_cpu(config.gpio_mode) & + CP210X_GPIO_MODE_MASK) >> + CP210X_GPIO_MODE_OFFSET); + gpio_latch = (u8)((le16_to_cpu(config.reset_state) & + CP210X_GPIO_MODE_MASK) >> + CP210X_GPIO_MODE_OFFSET); + + /* mark all pins which are not in GPIO mode */ + if (iface_config & CP2104_GPIO0_TXLED_MODE) /* GPIO 0 */ + priv->gpio_altfunc |= BIT(0); + if (iface_config & CP2104_GPIO1_RXLED_MODE) /* GPIO 1 */ + priv->gpio_altfunc |= BIT(1); + if (iface_config & CP2104_GPIO2_RS485_MODE) /* GPIO 2 */ + priv->gpio_altfunc |= BIT(2); + + /* + * Like CP2102N, CP2104 has also no strict input and output pin + * modes. + * Do the same input mode emulation as CP2102N. + */ + for (i = 0; i < priv->gc.ngpio; ++i) { + /* + * Set direction to "input" iff pin is open-drain and reset + * value is 1. + */ + if (!(priv->gpio_pushpull & BIT(i)) && (gpio_latch & BIT(i))) + priv->gpio_input |= BIT(i); + } + + return 0; +} + static int cp2102n_gpioconf_init(struct usb_serial *serial) { struct cp210x_serial_private *priv = usb_get_serial_data(serial); @@ -1627,6 +1698,9 @@ static int cp210x_gpio_init(struct usb_serial *serial) int result; switch (priv->partnum) { + case CP210X_PARTNUM_CP2104: + result = cp2104_gpioconf_init(serial); + break; case CP210X_PARTNUM_CP2105: result = cp2105_gpioconf_init(serial); break; -- cgit From f80d2f0846b7b9ceb1f2a5951229ee4391edaebd Mon Sep 17 00:00:00 2001 From: Bart Van Assche Date: Fri, 25 Jan 2019 10:34:43 -0800 Subject: scsi: target/core: Remove the write_pending_status() callback function Due to the patch that makes TMF handling synchronous the write_pending_status() callback function is no longer called. Hence remove it. Acked-by: Felipe Balbi Reviewed-by: Sagi Grimberg Reviewed-by: Andy Grover Reviewed-by: Christoph Hellwig Reviewed-by: Hannes Reinecke Reviewed-by: Bryant G. Ly Cc: Nicholas Bellinger Cc: Mike Christie Cc: Himanshu Madhani Cc: Quinn Tran Cc: Saurav Kashyap Cc: Michael S. Tsirkin Cc: Juergen Gross Signed-off-by: Bart Van Assche Signed-off-by: Martin K. Petersen --- drivers/usb/gadget/function/f_tcm.c | 9 --------- 1 file changed, 9 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/function/f_tcm.c b/drivers/usb/gadget/function/f_tcm.c index 34f5982cab78..7f01f78b1d23 100644 --- a/drivers/usb/gadget/function/f_tcm.c +++ b/drivers/usb/gadget/function/f_tcm.c @@ -1292,14 +1292,6 @@ static u32 usbg_sess_get_index(struct se_session *se_sess) return 0; } -/* - * XXX Error recovery: return != 0 if we expect writes. Dunno when that could be - */ -static int usbg_write_pending_status(struct se_cmd *se_cmd) -{ - return 0; -} - static void usbg_set_default_node_attrs(struct se_node_acl *nacl) { } @@ -1725,7 +1717,6 @@ static const struct target_core_fabric_ops usbg_ops = { .sess_get_index = usbg_sess_get_index, .sess_get_initiator_sid = NULL, .write_pending = usbg_send_write_request, - .write_pending_status = usbg_write_pending_status, .set_default_node_attributes = usbg_set_default_node_attrs, .get_cmd_state = usbg_get_cmd_state, .queue_data_in = usbg_send_read_response, -- cgit From 1381a5113caf764f090b912b478663275e7b999e Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Tue, 5 Feb 2019 09:00:14 +0200 Subject: usb: dwc3: debug: purge usage of strcat Now that buffer size is always passed around, we don't need to rely on strcat anymore. Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/debug.h | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/debug.h b/drivers/usb/dwc3/debug.h index e925a6b73005..6759a7efd8d5 100644 --- a/drivers/usb/dwc3/debug.h +++ b/drivers/usb/dwc3/debug.h @@ -545,21 +545,25 @@ static inline const char *dwc3_ep_event_string(char *str, size_t size, status & DEPEVT_STATUS_TRANSFER_ACTIVE ? " (Active)" : " (Not Active)"); + len = strlen(str); + /* Control Endpoints */ if (epnum <= 1) { int phase = DEPEVT_STATUS_CONTROL_PHASE(event->status); switch (phase) { case DEPEVT_STATUS_CONTROL_DATA: - strcat(str, " [Data Phase]"); + snprintf(str + ret, size - ret, + " [Data Phase]"); break; case DEPEVT_STATUS_CONTROL_STATUS: - strcat(str, " [Status Phase]"); + snprintf(str + ret, size - ret, + " [Status Phase]"); } } break; case DWC3_DEPEVT_RXTXFIFOEVT: - strcat(str, "FIFO"); + snprintf(str + ret, size - ret, "FIFO"); break; case DWC3_DEPEVT_STREAMEVT: status = event->status; @@ -571,13 +575,13 @@ static inline const char *dwc3_ep_event_string(char *str, size_t size, break; case DEPEVT_STREAMEVT_NOTFOUND: default: - strcat(str, " Stream Not Found"); + snprintf(str + ret, size - ret, " Stream Not Found"); break; } break; case DWC3_DEPEVT_EPCMDCMPLT: - strcat(str, "Endpoint Command Complete"); + snprintf(str + ret, size - ret, "Endpoint Command Complete"); break; default: snprintf(str, size, "UNKNOWN"); -- cgit From ae3d56d81507c33024ba7c1eae2ef433aa9bc0d5 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Tue, 29 Jan 2019 09:33:07 +0100 Subject: scsi: remove bidirectional command support No real need for bidi support once the OSD code is gone. Signed-off-by: Christoph Hellwig Reviewed-by: Jens Axboe Signed-off-by: Martin K. Petersen --- drivers/usb/storage/uas.c | 11 ++--------- 1 file changed, 2 insertions(+), 9 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/storage/uas.c b/drivers/usb/storage/uas.c index 36742e8e7edc..95f2142093d5 100644 --- a/drivers/usb/storage/uas.c +++ b/drivers/usb/storage/uas.c @@ -368,25 +368,19 @@ static void uas_data_cmplt(struct urb *urb) struct scsi_cmnd *cmnd = urb->context; struct uas_cmd_info *cmdinfo = (void *)&cmnd->SCp; struct uas_dev_info *devinfo = (void *)cmnd->device->hostdata; - struct scsi_data_buffer *sdb = NULL; + struct scsi_data_buffer *sdb = &cmnd->sdb; unsigned long flags; int status = urb->status; spin_lock_irqsave(&devinfo->lock, flags); if (cmdinfo->data_in_urb == urb) { - sdb = scsi_in(cmnd); cmdinfo->state &= ~DATA_IN_URB_INFLIGHT; cmdinfo->data_in_urb = NULL; } else if (cmdinfo->data_out_urb == urb) { - sdb = scsi_out(cmnd); cmdinfo->state &= ~DATA_OUT_URB_INFLIGHT; cmdinfo->data_out_urb = NULL; } - if (sdb == NULL) { - WARN_ON_ONCE(1); - goto out; - } if (devinfo->resetting) goto out; @@ -426,8 +420,7 @@ static struct urb *uas_alloc_data_urb(struct uas_dev_info *devinfo, gfp_t gfp, struct usb_device *udev = devinfo->udev; struct uas_cmd_info *cmdinfo = (void *)&cmnd->SCp; struct urb *urb = usb_alloc_urb(0, gfp); - struct scsi_data_buffer *sdb = (dir == DMA_FROM_DEVICE) - ? scsi_in(cmnd) : scsi_out(cmnd); + struct scsi_data_buffer *sdb = &cmnd->sdb; unsigned int pipe = (dir == DMA_FROM_DEVICE) ? devinfo->data_in_pipe : devinfo->data_out_pipe; -- cgit From 1e19a520a9258f3c7286826e7172e56bf6da86dc Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Tue, 5 Feb 2019 14:33:02 -0500 Subject: USB: gadget: Improve kerneldoc for usb_ep_dequeue() Commit bf594c1070f5 ("USB: gadget: Document that certain ep operations can be called in interrupt context") documented that usb_ep_dequeue() may be called in a non-process context. It follows that the routine must not sleep or wait for events. However, the routine's existing kerneldoc seems to imply that it will wait until the request being cancelled has fully completed. This is not so, and thus the comment needs to be improved. Misunderstanding this point may very well have been responsible for a bug recently uncovered in the f_fs function. The updated comment explicitly says that the routine may return before the request's completion handler is called. Signed-off-by: Alan Stern CC: John Stultz Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/core.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/udc/core.c b/drivers/usb/gadget/udc/core.c index 87d6b12779f2..7cf34beb50df 100644 --- a/drivers/usb/gadget/udc/core.c +++ b/drivers/usb/gadget/udc/core.c @@ -281,10 +281,10 @@ EXPORT_SYMBOL_GPL(usb_ep_queue); * @ep:the endpoint associated with the request * @req:the request being canceled * - * If the request is still active on the endpoint, it is dequeued and its - * completion routine is called (with status -ECONNRESET); else a negative - * error code is returned. This is guaranteed to happen before the call to - * usb_ep_dequeue() returns. + * If the request is still active on the endpoint, it is dequeued and + * eventually its completion routine is called (with status -ECONNRESET); + * else a negative error code is returned. This routine is asynchronous, + * that is, it may return before the completion routine runs. * * Note that some hardware can't clear out write fifos (to unlink the request * at the head of the queue) except as part of disconnecting from usb. Such -- cgit From 836bcab50624d728abeab3766f356d54c48ea1b1 Mon Sep 17 00:00:00 2001 From: Guido Kiener Date: Mon, 4 Feb 2019 19:04:20 +0100 Subject: udc: net2280: Fix net2280_disable A reset e.g. calling ep_reset_338x() can happen while endpoints are enabled. The ep_reset_338x() sets ep->desc = NULL to mark endpoint being invalid. A subsequent call of net2280_disable will fail and return -EINVAL to parent function usb_ep_disable(), which will fail, too, and do not set the member ep->enabled = false. See: https://elixir.bootlin.com/linux/v5.0-rc5/source/drivers/usb/gadget/udc/core.c#L139 This fix ignores dp->desc and allows net2280_disable() to succeed. Subsequent calls to usb_ep_enable()/usb_ep_disable() succeeds. Acked-by: Alan Stern Signed-off-by: Guido Kiener Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/net2280.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/udc/net2280.c b/drivers/usb/gadget/udc/net2280.c index e7dae5379e04..7154f00dea40 100644 --- a/drivers/usb/gadget/udc/net2280.c +++ b/drivers/usb/gadget/udc/net2280.c @@ -516,8 +516,8 @@ static int net2280_disable(struct usb_ep *_ep) unsigned long flags; ep = container_of(_ep, struct net2280_ep, ep); - if (!_ep || !ep->desc || _ep->name == ep0name) { - pr_err("%s: Invalid ep=%p or ep->desc\n", __func__, _ep); + if (!_ep || _ep->name == ep0name) { + pr_err("%s: Invalid ep=%p\n", __func__, _ep); return -EINVAL; } spin_lock_irqsave(&ep->dev->lock, flags); -- cgit From 97311c8f8b6e26d5ba6508f0df430ad80fc59327 Mon Sep 17 00:00:00 2001 From: Minas Harutyunyan Date: Thu, 31 Jan 2019 18:28:07 +0400 Subject: usb: dwc2: Fix EP TxFIFO number setting In case when some EP IN is frequently reused, i.e. enabled/disabled by function driver. It is required to clear TxFIFO number field in DIEPCTL register before setting new number. Otherwise there is probability to have same TxFIFO number for different EP's because of OR operator. Signed-off-by: Minas Harutyunyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/gadget.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index 55ef3cc2701b..e15d8a462085 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -4005,6 +4005,7 @@ static int dwc2_hsotg_ep_enable(struct usb_ep *ep, ret = -ENOMEM; goto error1; } + epctrl &= ~(DXEPCTL_TXFNUM_LIMIT << DXEPCTL_TXFNUM_SHIFT); hsotg->fifo_map |= 1 << fifo_index; epctrl |= DXEPCTL_TXFNUM(fifo_index); hs_ep->fifo_index = fifo_index; -- cgit From 1ff767bfa54a97f4289cd0dad22d404b53a6d8e3 Mon Sep 17 00:00:00 2001 From: Colin Ian King Date: Tue, 22 Jan 2019 14:26:54 +0000 Subject: usb: gadget: fix various indentation issues There are a bunch of various indentation issues, clean these up. Signed-off-by: Colin Ian King Signed-off-by: Felipe Balbi --- drivers/usb/gadget/function/f_uac1.c | 8 +++---- drivers/usb/gadget/legacy/inode.c | 40 ++++++++++++++++---------------- drivers/usb/gadget/udc/aspeed-vhub/hub.c | 2 +- drivers/usb/gadget/udc/bdc/bdc_cmd.c | 4 ++-- drivers/usb/gadget/udc/net2280.c | 2 +- 5 files changed, 28 insertions(+), 28 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/function/f_uac1.c b/drivers/usb/gadget/function/f_uac1.c index 2746a926a8d9..fe42ffccb020 100644 --- a/drivers/usb/gadget/function/f_uac1.c +++ b/drivers/usb/gadget/function/f_uac1.c @@ -459,10 +459,10 @@ static int f_audio_set_alt(struct usb_function *f, unsigned intf, unsigned alt) } else if (intf == uac1->as_in_intf) { uac1->as_in_alt = alt; - if (alt) - ret = u_audio_start_playback(&uac1->g_audio); - else - u_audio_stop_playback(&uac1->g_audio); + if (alt) + ret = u_audio_start_playback(&uac1->g_audio); + else + u_audio_stop_playback(&uac1->g_audio); } else { dev_err(dev, "%s:%d Error!\n", __func__, __LINE__); return -EINVAL; diff --git a/drivers/usb/gadget/legacy/inode.c b/drivers/usb/gadget/legacy/inode.c index 37ca0e669bd8..249277d0e53f 100644 --- a/drivers/usb/gadget/legacy/inode.c +++ b/drivers/usb/gadget/legacy/inode.c @@ -1218,27 +1218,27 @@ ep0_poll (struct file *fd, poll_table *wait) if (dev->state <= STATE_DEV_OPENED) return DEFAULT_POLLMASK; - poll_wait(fd, &dev->wait, wait); - - spin_lock_irq (&dev->lock); - - /* report fd mode change before acting on it */ - if (dev->setup_abort) { - dev->setup_abort = 0; - mask = EPOLLHUP; - goto out; - } - - if (dev->state == STATE_DEV_SETUP) { - if (dev->setup_in || dev->setup_can_stall) - mask = EPOLLOUT; - } else { - if (dev->ev_next != 0) - mask = EPOLLIN; - } + poll_wait(fd, &dev->wait, wait); + + spin_lock_irq(&dev->lock); + + /* report fd mode change before acting on it */ + if (dev->setup_abort) { + dev->setup_abort = 0; + mask = EPOLLHUP; + goto out; + } + + if (dev->state == STATE_DEV_SETUP) { + if (dev->setup_in || dev->setup_can_stall) + mask = EPOLLOUT; + } else { + if (dev->ev_next != 0) + mask = EPOLLIN; + } out: - spin_unlock_irq(&dev->lock); - return mask; + spin_unlock_irq(&dev->lock); + return mask; } static long dev_ioctl (struct file *fd, unsigned code, unsigned long value) diff --git a/drivers/usb/gadget/udc/aspeed-vhub/hub.c b/drivers/usb/gadget/udc/aspeed-vhub/hub.c index 35ba0e55a2e9..7c040f56100e 100644 --- a/drivers/usb/gadget/udc/aspeed-vhub/hub.c +++ b/drivers/usb/gadget/udc/aspeed-vhub/hub.c @@ -295,7 +295,7 @@ static int ast_vhub_rep_desc(struct ast_vhub_ep *ep, dsize = AST_VHUB_HUB_DESC_SIZE; memcpy(ep->buf, &ast_vhub_hub_desc, dsize); BUILD_BUG_ON(dsize > sizeof(ast_vhub_hub_desc)); - BUILD_BUG_ON(AST_VHUB_HUB_DESC_SIZE >= AST_VHUB_EP0_MAX_PACKET); + BUILD_BUG_ON(AST_VHUB_HUB_DESC_SIZE >= AST_VHUB_EP0_MAX_PACKET); break; default: return std_req_stall; diff --git a/drivers/usb/gadget/udc/bdc/bdc_cmd.c b/drivers/usb/gadget/udc/bdc/bdc_cmd.c index 6305bf2c8b59..44c2a5eef785 100644 --- a/drivers/usb/gadget/udc/bdc/bdc_cmd.c +++ b/drivers/usb/gadget/udc/bdc/bdc_cmd.c @@ -311,8 +311,8 @@ int bdc_ep_clear_stall(struct bdc *bdc, int epnum) /* if the endpoint it not stallled */ if (!(ep->flags & BDC_EP_STALL)) { ret = bdc_ep_set_stall(bdc, epnum); - if (ret) - return ret; + if (ret) + return ret; } } /* Preserve the seq number for ep0 only */ diff --git a/drivers/usb/gadget/udc/net2280.c b/drivers/usb/gadget/udc/net2280.c index 7154f00dea40..f63f82450bf4 100644 --- a/drivers/usb/gadget/udc/net2280.c +++ b/drivers/usb/gadget/udc/net2280.c @@ -2279,7 +2279,7 @@ static void usb_reinit_338x(struct net2280 *dev) * - It is safe to set for all connection speeds; all chip revisions. * - R-M-W to leave other bits undisturbed. * - Reference PLX TT-7372 - */ + */ val = readl(&dev->ll_chicken_reg->ll_tsn_chicken_bit); val |= BIT(RECOVERY_IDLE_TO_RECOVER_FMW); writel(val, &dev->ll_chicken_reg->ll_tsn_chicken_bit); -- cgit From 10209abe87f5ebfd482a00323f5236d6094d0865 Mon Sep 17 00:00:00 2001 From: Andrzej Pietrasiewicz Date: Mon, 21 Jan 2019 14:44:47 +0100 Subject: usb: dwc2: gadget: Add scatter-gather mode This patch adds support for transferring requests, which are non-contiguous in physical memory, i.e. the data buffer is described by a scatter-list. This allows transferring large requests without relying on error-prone contiguous buffer allocations. This way of allocating requests is already implemented in functionfs and TCM USB functions and automatically used if UDC driver advertises scatter-gather suppport. Signed-off-by: Andrzej Pietrasiewicz [mszyprow: fixed null pointer issue, rewrote commit message] Signed-off-by: Marek Szyprowski Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/gadget.c | 113 +++++++++++++++++++++++++++++++--------------- 1 file changed, 77 insertions(+), 36 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index e15d8a462085..6812a8a3a98b 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -768,22 +768,13 @@ static u32 dwc2_gadget_get_desc_params(struct dwc2_hsotg_ep *hs_ep, u32 *mask) return desc_size; } -/* - * dwc2_gadget_config_nonisoc_xfer_ddma - prepare non ISOC DMA desc chain. - * @hs_ep: The endpoint - * @dma_buff: DMA address to use - * @len: Length of the transfer - * - * This function will iterate over descriptor chain and fill its entries - * with corresponding information based on transfer data. - */ -static void dwc2_gadget_config_nonisoc_xfer_ddma(struct dwc2_hsotg_ep *hs_ep, +static void dwc2_gadget_fill_nonisoc_xfer_ddma_one(struct dwc2_hsotg_ep *hs_ep, + struct dwc2_dma_desc **desc, dma_addr_t dma_buff, - unsigned int len) + unsigned int len, + bool true_last) { - struct dwc2_hsotg *hsotg = hs_ep->parent; int dir_in = hs_ep->dir_in; - struct dwc2_dma_desc *desc = hs_ep->desc_list; u32 mps = hs_ep->ep.maxpacket; u32 maxsize = 0; u32 offset = 0; @@ -798,39 +789,77 @@ static void dwc2_gadget_config_nonisoc_xfer_ddma(struct dwc2_hsotg_ep *hs_ep, hs_ep->desc_count = 1; for (i = 0; i < hs_ep->desc_count; ++i) { - desc->status = 0; - desc->status |= (DEV_DMA_BUFF_STS_HBUSY + (*desc)->status = 0; + (*desc)->status |= (DEV_DMA_BUFF_STS_HBUSY << DEV_DMA_BUFF_STS_SHIFT); if (len > maxsize) { if (!hs_ep->index && !dir_in) - desc->status |= (DEV_DMA_L | DEV_DMA_IOC); + (*desc)->status |= (DEV_DMA_L | DEV_DMA_IOC); - desc->status |= (maxsize << - DEV_DMA_NBYTES_SHIFT & mask); - desc->buf = dma_buff + offset; + (*desc)->status |= + maxsize << DEV_DMA_NBYTES_SHIFT & mask; + (*desc)->buf = dma_buff + offset; len -= maxsize; offset += maxsize; } else { - desc->status |= (DEV_DMA_L | DEV_DMA_IOC); + if (true_last) + (*desc)->status |= (DEV_DMA_L | DEV_DMA_IOC); if (dir_in) - desc->status |= (len % mps) ? DEV_DMA_SHORT : - ((hs_ep->send_zlp) ? DEV_DMA_SHORT : 0); - if (len > maxsize) - dev_err(hsotg->dev, "wrong len %d\n", len); + (*desc)->status |= (len % mps) ? DEV_DMA_SHORT : + ((hs_ep->send_zlp && true_last) ? + DEV_DMA_SHORT : 0); - desc->status |= + (*desc)->status |= len << DEV_DMA_NBYTES_SHIFT & mask; - desc->buf = dma_buff + offset; + (*desc)->buf = dma_buff + offset; } - desc->status &= ~DEV_DMA_BUFF_STS_MASK; - desc->status |= (DEV_DMA_BUFF_STS_HREADY + (*desc)->status &= ~DEV_DMA_BUFF_STS_MASK; + (*desc)->status |= (DEV_DMA_BUFF_STS_HREADY << DEV_DMA_BUFF_STS_SHIFT); - desc++; + (*desc)++; + } +} + +/* + * dwc2_gadget_config_nonisoc_xfer_ddma - prepare non ISOC DMA desc chain. + * @hs_ep: The endpoint + * @ureq: Request to transfer + * @offset: offset in bytes + * @len: Length of the transfer + * + * This function will iterate over descriptor chain and fill its entries + * with corresponding information based on transfer data. + */ +static void dwc2_gadget_config_nonisoc_xfer_ddma(struct dwc2_hsotg_ep *hs_ep, + struct usb_request *ureq, + unsigned int offset, + unsigned int len) +{ + struct dwc2_dma_desc *desc = hs_ep->desc_list; + struct scatterlist *sg; + int i; + u8 desc_count = 0; + + /* non-DMA sg buffer */ + if (!ureq->num_sgs) { + dwc2_gadget_fill_nonisoc_xfer_ddma_one(hs_ep, &desc, + ureq->dma + offset, len, true); + return; } + + /* DMA sg buffer */ + for_each_sg(ureq->sg, sg, ureq->num_sgs, i) { + dwc2_gadget_fill_nonisoc_xfer_ddma_one(hs_ep, &desc, + sg_dma_address(sg) + sg->offset, sg_dma_len(sg), + sg_is_last(sg)); + desc_count += hs_ep->desc_count; + } + + hs_ep->desc_count = desc_count; } /* @@ -944,7 +973,13 @@ static void dwc2_gadget_start_isoc_ddma(struct dwc2_hsotg_ep *hs_ep) hs_ep->next_desc = 0; list_for_each_entry_safe(hs_req, treq, &hs_ep->queue, queue) { - ret = dwc2_gadget_fill_isoc_desc(hs_ep, hs_req->req.dma, + dma_addr_t dma_addr = hs_req->req.dma; + + if (hs_req->req.num_sgs) { + WARN_ON(hs_req->req.num_sgs > 1); + dma_addr = sg_dma_address(hs_req->req.sg); + } + ret = dwc2_gadget_fill_isoc_desc(hs_ep, dma_addr, hs_req->req.length); if (ret) break; @@ -1100,7 +1135,7 @@ static void dwc2_hsotg_start_req(struct dwc2_hsotg *hsotg, offset = ureq->actual; /* Fill DDMA chain entries */ - dwc2_gadget_config_nonisoc_xfer_ddma(hs_ep, ureq->dma + offset, + dwc2_gadget_config_nonisoc_xfer_ddma(hs_ep, ureq, offset, length); /* write descriptor chain address to control register */ @@ -1399,7 +1434,13 @@ static int dwc2_hsotg_ep_queue(struct usb_ep *ep, struct usb_request *req, */ if (using_desc_dma(hs) && hs_ep->isochronous) { if (hs_ep->target_frame != TARGET_FRAME_INITIAL) { - dwc2_gadget_fill_isoc_desc(hs_ep, hs_req->req.dma, + dma_addr_t dma_addr = hs_req->req.dma; + + if (hs_req->req.num_sgs) { + WARN_ON(hs_req->req.num_sgs > 1); + dma_addr = sg_dma_address(hs_req->req.sg); + } + dwc2_gadget_fill_isoc_desc(hs_ep, dma_addr, hs_req->req.length); } return 0; @@ -1987,13 +2028,12 @@ static void dwc2_hsotg_program_zlp(struct dwc2_hsotg *hsotg, dev_dbg(hsotg->dev, "Receiving zero-length packet on ep%d\n", index); if (using_desc_dma(hsotg)) { - /* Not specific buffer needed for ep0 ZLP */ - dma_addr_t dma = hs_ep->desc_list_dma; - if (!index) dwc2_gadget_set_ep0_desc_chain(hsotg, hs_ep); - dwc2_gadget_config_nonisoc_xfer_ddma(hs_ep, dma, 0); + /* Not specific buffer needed for ep0 ZLP */ + dwc2_gadget_fill_nonisoc_xfer_ddma_one(hs_ep, &hs_ep->desc_list, + hs_ep->desc_list_dma, 0, true); } else { dwc2_writel(hsotg, DXEPTSIZ_MC(1) | DXEPTSIZ_PKTCNT(1) | DXEPTSIZ_XFERSIZE(0), @@ -4386,6 +4426,7 @@ static int dwc2_hsotg_udc_start(struct usb_gadget *gadget, hsotg->enabled = 0; spin_unlock_irqrestore(&hsotg->lock, flags); + gadget->sg_supported = using_desc_dma(hsotg); dev_info(hsotg->dev, "bound driver %s\n", driver->driver.name); return 0; -- cgit From 44a9d1b9a6bb41b5dba3d6d345421385b0843e4d Mon Sep 17 00:00:00 2001 From: liangshengjun Date: Mon, 24 Dec 2018 02:36:28 +0000 Subject: usb: gadget: function: sync f_uac1 ac header baInterfaceNr f_uac1 audio control header descriptor default set baInterfaceNr[]={1,2}, but usb gadget make a configuration descriptor with more interfaces combination, it can not confirm f_uac1 function linked first. So always keep baInterfaceNr[]={1,2} is correct, and it is necessary to sync baInterfaceNr[] with usb_interface_id() value. Signed-off-by: Liang Shengjun Signed-off-by: Felipe Balbi --- drivers/usb/gadget/function/f_uac1.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/function/f_uac1.c b/drivers/usb/gadget/function/f_uac1.c index fe42ffccb020..00d346965f7a 100644 --- a/drivers/usb/gadget/function/f_uac1.c +++ b/drivers/usb/gadget/function/f_uac1.c @@ -568,6 +568,7 @@ static int f_audio_bind(struct usb_configuration *c, struct usb_function *f) goto fail; as_out_interface_alt_0_desc.bInterfaceNumber = status; as_out_interface_alt_1_desc.bInterfaceNumber = status; + ac_header_desc.baInterfaceNr[0] = status; uac1->as_out_intf = status; uac1->as_out_alt = 0; @@ -576,6 +577,7 @@ static int f_audio_bind(struct usb_configuration *c, struct usb_function *f) goto fail; as_in_interface_alt_0_desc.bInterfaceNumber = status; as_in_interface_alt_1_desc.bInterfaceNumber = status; + ac_header_desc.baInterfaceNr[1] = status; uac1->as_in_intf = status; uac1->as_in_alt = 0; -- cgit From dffe2d7fc45017d7afdb6fc226ff34a537cc285c Mon Sep 17 00:00:00 2001 From: Andrzej Pietrasiewicz Date: Thu, 31 Jan 2019 15:53:39 +0100 Subject: usb: gadget: move non-super speed code out of usb_ep_autoconfig_ss() The moved code refers to non-super speed endpoints only. This patch also makes the comment stress the fact, that autoconfigured descriptor might need some adjustments. Signed-off-by: Andrzej Pietrasiewicz Signed-off-by: Felipe Balbi --- drivers/usb/gadget/epautoconf.c | 41 ++++++++++++++++++++++++----------------- 1 file changed, 24 insertions(+), 17 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/epautoconf.c b/drivers/usb/gadget/epautoconf.c index 71b15c65b90f..1eb4fa2e623f 100644 --- a/drivers/usb/gadget/epautoconf.c +++ b/drivers/usb/gadget/epautoconf.c @@ -67,9 +67,6 @@ struct usb_ep *usb_ep_autoconfig_ss( ) { struct usb_ep *ep; - u8 type; - - type = desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK; if (gadget->ops->match_ep) { ep = gadget->ops->match_ep(gadget, desc, ep_comp); @@ -109,16 +106,6 @@ found_ep: desc->bEndpointAddress |= gadget->out_epnum; } - /* report (variable) full speed bulk maxpacket */ - if ((type == USB_ENDPOINT_XFER_BULK) && !ep_comp) { - int size = ep->maxpacket_limit; - - /* min() doesn't work on bitfields with gcc-3.5 */ - if (size > 64) - size = 64; - desc->wMaxPacketSize = cpu_to_le16(size); - } - ep->address = desc->bEndpointAddress; ep->desc = NULL; ep->comp_desc = NULL; @@ -152,9 +139,10 @@ EXPORT_SYMBOL_GPL(usb_ep_autoconfig_ss); * * On success, this returns an claimed usb_ep, and modifies the endpoint * descriptor bEndpointAddress. For bulk endpoints, the wMaxPacket value - * is initialized as if the endpoint were used at full speed. To prevent - * the endpoint from being returned by a later autoconfig call, claims it - * by assigning ep->claimed to true. + * is initialized as if the endpoint were used at full speed. Because of + * that the users must consider adjusting the autoconfigured descriptor. + * To prevent the endpoint from being returned by a later autoconfig call, + * claims it by assigning ep->claimed to true. * * On failure, this returns a null endpoint descriptor. */ @@ -163,7 +151,26 @@ struct usb_ep *usb_ep_autoconfig( struct usb_endpoint_descriptor *desc ) { - return usb_ep_autoconfig_ss(gadget, desc, NULL); + struct usb_ep *ep; + u8 type; + + ep = usb_ep_autoconfig_ss(gadget, desc, NULL); + if (!ep) + return NULL; + + type = desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK; + + /* report (variable) full speed bulk maxpacket */ + if (type == USB_ENDPOINT_XFER_BULK) { + int size = ep->maxpacket_limit; + + /* min() doesn't work on bitfields with gcc-3.5 */ + if (size > 64) + size = 64; + desc->wMaxPacketSize = cpu_to_le16(size); + } + + return ep; } EXPORT_SYMBOL_GPL(usb_ep_autoconfig); -- cgit From bdcc03cef0fd8abc6eaeec6ac47e54ae8f8c625f Mon Sep 17 00:00:00 2001 From: Andrzej Pietrasiewicz Date: Thu, 31 Jan 2019 15:53:40 +0100 Subject: usb: gadget: f_fs: preserve wMaxPacketSize across usb_ep_autoconfig() call usb_ep_autoconfig() treats the passed descriptor as if it were an fs descriptor. In particular, for bulk endpoints, it clips wMaxPacketSize to 64. This patch preserves the original value. Signed-off-by: Andrzej Pietrasiewicz Signed-off-by: Felipe Balbi --- drivers/usb/gadget/function/f_fs.c | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c index 1e5430438703..66a2c165b4b7 100644 --- a/drivers/usb/gadget/function/f_fs.c +++ b/drivers/usb/gadget/function/f_fs.c @@ -2843,12 +2843,18 @@ static int __ffs_func_bind_do_descs(enum ffs_entity_type type, u8 *valuep, struct usb_request *req; struct usb_ep *ep; u8 bEndpointAddress; + u16 wMaxPacketSize; /* * We back up bEndpointAddress because autoconfig overwrites * it with physical endpoint address. */ bEndpointAddress = ds->bEndpointAddress; + /* + * We back up wMaxPacketSize because autoconfig treats + * endpoint descriptors as if they were full speed. + */ + wMaxPacketSize = ds->wMaxPacketSize; pr_vdebug("autoconfig\n"); ep = usb_ep_autoconfig(func->gadget, ds); if (unlikely(!ep)) @@ -2869,6 +2875,11 @@ static int __ffs_func_bind_do_descs(enum ffs_entity_type type, u8 *valuep, */ if (func->ffs->user_flags & FUNCTIONFS_VIRTUAL_ADDR) ds->bEndpointAddress = bEndpointAddress; + /* + * Restore wMaxPacketSize which was potentially + * overwritten by autoconfig. + */ + ds->wMaxPacketSize = wMaxPacketSize; } ffs_dump_mem(": Rewritten ep desc", ds, ds->bLength); -- cgit From 9c7ebc99b382a158fd2594adbfc204e526b16e08 Mon Sep 17 00:00:00 2001 From: Thinh Nguyen Date: Wed, 6 Feb 2019 10:49:26 -0800 Subject: usb: dwc3: haps: Workaround matching VID PID i.MX6QP and i.MX7D platform use a PCIe controller with the same VID and PID as this USB controller. The system may incorrectly match this driver to that PCIe controller. To workaround this, specifically use class type USB with PCI device ID to prevent incorrect driver matching. Signed-off-by: Thinh Nguyen Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/dwc3-haps.c | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/dwc3-haps.c b/drivers/usb/dwc3/dwc3-haps.c index 02d57d98ef9b..3cecbf169452 100644 --- a/drivers/usb/dwc3/dwc3-haps.c +++ b/drivers/usb/dwc3/dwc3-haps.c @@ -106,6 +106,15 @@ static const struct pci_device_id dwc3_haps_id_table[] = { { PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS, PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3), + /* + * i.MX6QP and i.MX7D platform use a PCIe controller with the + * same VID and PID as this USB controller. The system may + * incorrectly match this driver to that PCIe controller. To + * workaround this, specifically use class type USB to prevent + * incorrect driver matching. + */ + .class = (PCI_CLASS_SERIAL_USB << 8), + .class_mask = 0xffff00, }, { PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS, -- cgit From 85bc2d91e9f021f8420d7affc06185ba5a0f3504 Mon Sep 17 00:00:00 2001 From: Johanna Abrahamsson Date: Wed, 6 Feb 2019 09:56:15 +0100 Subject: USB: serial: cp210x: add minimum baud rate for CP2105 SCI Add minimum baud rate to the cp210x driver. According to the datasheet for CP2105, the SCI supports 2400 as the lowest baud rate. As this is not heeded in the current code, an error message 'failed set req 0x1e size 4 status: -32' when trying to set a lower baud rate such as 300. The other cp210x models to date supports a minimum baud rate of 300. Signed-off-by: Johanna Abrahamsson [ johan: simplify min_speed init, move clamp after comment, and drop unused serial-data pointer from cp210x_get_actual_rate() ] Signed-off-by: Johan Hovold --- drivers/usb/serial/cp210x.c | 17 ++++++++--------- 1 file changed, 8 insertions(+), 9 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c index 260c875dd263..fac7a4547523 100644 --- a/drivers/usb/serial/cp210x.c +++ b/drivers/usb/serial/cp210x.c @@ -245,6 +245,7 @@ struct cp210x_serial_private { u8 gpio_input; #endif u8 partnum; + speed_t min_speed; speed_t max_speed; bool use_actual_rate; }; @@ -1072,14 +1073,11 @@ static speed_t cp210x_get_an205_rate(speed_t baud) return cp210x_an205_table1[i].rate; } -static speed_t cp210x_get_actual_rate(struct usb_serial *serial, speed_t baud) +static speed_t cp210x_get_actual_rate(speed_t baud) { - struct cp210x_serial_private *priv = usb_get_serial_data(serial); unsigned int prescale = 1; unsigned int div; - baud = clamp(baud, 300u, priv->max_speed); - if (baud <= 365) prescale = 4; @@ -1122,20 +1120,18 @@ static void cp210x_change_speed(struct tty_struct *tty, struct cp210x_serial_private *priv = usb_get_serial_data(serial); u32 baud; - baud = tty->termios.c_ospeed; - /* * This maps the requested rate to the actual rate, a valid rate on * cp2102 or cp2103, or to an arbitrary rate in [1M, max_speed]. * * NOTE: B0 is not implemented. */ + baud = clamp(tty->termios.c_ospeed, priv->min_speed, priv->max_speed); + if (priv->use_actual_rate) - baud = cp210x_get_actual_rate(serial, baud); + baud = cp210x_get_actual_rate(baud); else if (baud < 1000000) baud = cp210x_get_an205_rate(baud); - else if (baud > priv->max_speed) - baud = priv->max_speed; dev_dbg(&port->dev, "%s - setting baud rate to %u\n", __func__, baud); if (cp210x_write_u32_reg(port, CP210X_SET_BAUDRATE, baud)) { @@ -1797,6 +1793,7 @@ static void cp210x_init_max_speed(struct usb_serial *serial) { struct cp210x_serial_private *priv = usb_get_serial_data(serial); bool use_actual_rate = false; + speed_t min = 300; speed_t max; switch (priv->partnum) { @@ -1819,6 +1816,7 @@ static void cp210x_init_max_speed(struct usb_serial *serial) use_actual_rate = true; max = 2000000; /* ECI */ } else { + min = 2400; max = 921600; /* SCI */ } break; @@ -1833,6 +1831,7 @@ static void cp210x_init_max_speed(struct usb_serial *serial) break; } + priv->min_speed = min; priv->max_speed = max; priv->use_actual_rate = use_actual_rate; } -- cgit From dd9d3d86b08d6a106830364879c42c78db85389c Mon Sep 17 00:00:00 2001 From: Ivan Mironov Date: Wed, 6 Feb 2019 21:14:13 +0500 Subject: USB: serial: cp210x: add ID for Ingenico 3070 Here is how this device appears in kernel log: usb 3-1: new full-speed USB device number 18 using xhci_hcd usb 3-1: New USB device found, idVendor=0b00, idProduct=3070 usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 usb 3-1: Product: Ingenico 3070 usb 3-1: Manufacturer: Silicon Labs usb 3-1: SerialNumber: 0001 Apparently this is a POS terminal with embedded USB-to-Serial converter. Cc: stable@vger.kernel.org Signed-off-by: Ivan Mironov Signed-off-by: Johan Hovold --- drivers/usb/serial/cp210x.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c index c0777a374a88..3286ed462fc5 100644 --- a/drivers/usb/serial/cp210x.c +++ b/drivers/usb/serial/cp210x.c @@ -61,6 +61,7 @@ static const struct usb_device_id id_table[] = { { USB_DEVICE(0x08e6, 0x5501) }, /* Gemalto Prox-PU/CU contactless smartcard reader */ { USB_DEVICE(0x08FD, 0x000A) }, /* Digianswer A/S , ZigBee/802.15.4 MAC Device */ { USB_DEVICE(0x0908, 0x01FF) }, /* Siemens RUGGEDCOM USB Serial Console */ + { USB_DEVICE(0x0B00, 0x3070) }, /* Ingenico 3070 */ { USB_DEVICE(0x0BED, 0x1100) }, /* MEI (TM) Cashflow-SC Bill/Voucher Acceptor */ { USB_DEVICE(0x0BED, 0x1101) }, /* MEI series 2000 Combo Acceptor */ { USB_DEVICE(0x0FCF, 0x1003) }, /* Dynastream ANT development board */ -- cgit From 4fdc1790e6a9ef22399c6bc6e63b80f4609f3b7e Mon Sep 17 00:00:00 2001 From: Jan-Marek Glogowski Date: Fri, 1 Feb 2019 13:52:31 +0100 Subject: usb: handle warm-reset port requests on hub resume On plug-in of my USB-C device, its USB_SS_PORT_LS_SS_INACTIVE link state bit is set. Greping all the kernel for this bit shows that the port status requests a warm-reset this way. This just happens, if its the only device on the root hub, the hub therefore resumes and the HCDs status_urb isn't yet available. If a warm-reset request is detected, this sets the hubs event_bits, which will prevent any auto-suspend and allows the hubs workqueue to warm-reset the port later in port_event. Signed-off-by: Jan-Marek Glogowski Acked-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/hub.c | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index bb0830c72286..8d4631c81b9f 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -108,6 +108,8 @@ EXPORT_SYMBOL_GPL(ehci_cf_port_reset_rwsem); static void hub_release(struct kref *kref); static int usb_reset_and_verify_device(struct usb_device *udev); static int hub_port_disable(struct usb_hub *hub, int port1, int set_state); +static bool hub_port_warm_reset_required(struct usb_hub *hub, int port1, + u16 portstatus); static inline char *portspeed(struct usb_hub *hub, int portstatus) { @@ -1137,6 +1139,11 @@ static void hub_activate(struct usb_hub *hub, enum hub_activation_type type) USB_PORT_FEAT_ENABLE); } + /* Make sure a warm-reset request is handled by port_event */ + if (type == HUB_RESUME && + hub_port_warm_reset_required(hub, port1, portstatus)) + set_bit(port1, hub->event_bits); + /* * Add debounce if USB3 link is in polling/link training state. * Link will automatically transition to Enabled state after -- cgit From 25b0161450363ed7fe9fe618cda202e15817311a Mon Sep 17 00:00:00 2001 From: Nikolay Yakimov Date: Tue, 15 Jan 2019 19:13:54 +0300 Subject: USB: Fix configuration selection issues introduced in v4.20.0 Commit f13912d3f014a introduced changes to the usb_choose_configuration function to better support USB Audio UAC3-compatible devices. However, there are a few problems with this patch. First of all, it adds new "if" clauses in the middle of an existing "if"/"else if" tree, which obviously breaks pre-existing logic. Secondly, since it continues iterating over configurations in one of the branches, other code in the loop can choose an unintended configuration. Finally, if an audio device's first configuration is UAC3-compatible, and there are multiple UAC3 configurations, the second one would be chosen, due to the first configuration never being checked for UAC3-compatibility. Commit ff2a8c532c14 tries to fix the second issue, but it goes about it in a somewhat unnecessarily convoluted way, in my opinion, and does nothing to fix the first or the last one. This patch tries to rectify problems described by essentially rewriting code introduced in f13912d3f014a. Notice the code was moved to *before* the "if"/"else if" tree. Signed-off-by: Nikolay Yakimov Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/generic.c | 44 +++++++++++++++++++++++++------------------- 1 file changed, 25 insertions(+), 19 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/core/generic.c b/drivers/usb/core/generic.c index f713cecc1f41..1ac9c1e5f773 100644 --- a/drivers/usb/core/generic.c +++ b/drivers/usb/core/generic.c @@ -118,6 +118,31 @@ int usb_choose_configuration(struct usb_device *udev) continue; } + /* + * Select first configuration as default for audio so that + * devices that don't comply with UAC3 protocol are supported. + * But, still iterate through other configurations and + * select UAC3 compliant config if present. + */ + if (desc && is_audio(desc)) { + /* Always prefer the first found UAC3 config */ + if (is_uac3_config(desc)) { + best = c; + break; + } + + /* If there is no UAC3 config, prefer the first config */ + else if (i == 0) + best = c; + + /* Unconditional continue, because the rest of the code + * in the loop is irrelevant for audio devices, and + * because it can reassign best, which for audio devices + * we don't want. + */ + continue; + } + /* When the first config's first interface is one of Microsoft's * pet nonstandard Ethernet-over-USB protocols, ignore it unless * this kernel has enabled the necessary host side driver. @@ -132,25 +157,6 @@ int usb_choose_configuration(struct usb_device *udev) #endif } - /* - * Select first configuration as default for audio so that - * devices that don't comply with UAC3 protocol are supported. - * But, still iterate through other configurations and - * select UAC3 compliant config if present. - */ - if (i == 0 && num_configs > 1 && desc && is_audio(desc)) { - best = c; - continue; - } - - if (i > 0 && desc && is_audio(desc)) { - if (is_uac3_config(desc)) { - best = c; - break; - } - continue; - } - /* From the remaining configs, choose the first one whose * first interface is for a non-vendor-specific class. * Reason: Linux is more likely to have a class driver -- cgit From 382e8fa80da1571271faf1bd2220ac22cee13866 Mon Sep 17 00:00:00 2001 From: Heikki Krogerus Date: Fri, 1 Feb 2019 13:47:54 +0300 Subject: usb: typec: displayport: Move the Configuration VDO helpers to the header The helpers used for reading and writing the pin assignment from and to the Configuration VDO will be useful in GPU drivers, and also UCSI driver after DisplayPort alt mode support is added to it. Signed-off-by: Heikki Krogerus Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/altmodes/displayport.c | 4 ---- 1 file changed, 4 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/typec/altmodes/displayport.c b/drivers/usb/typec/altmodes/displayport.c index 3f06e94771a7..610d790bc9be 100644 --- a/drivers/usb/typec/altmodes/displayport.c +++ b/drivers/usb/typec/altmodes/displayport.c @@ -24,10 +24,6 @@ enum { DP_CONF_DUAL_D, }; -/* Helper for setting/getting the pin assignement value to the configuration */ -#define DP_CONF_SET_PIN_ASSIGN(_a_) ((_a_) << 8) -#define DP_CONF_GET_PIN_ASSIGN(_conf_) (((_conf_) & GENMASK(15, 8)) >> 8) - /* Pin assignments that use USB3.1 Gen2 signaling to carry DP protocol */ #define DP_PIN_ASSIGN_GEN2_BR_MASK (BIT(DP_PIN_ASSIGN_A) | \ BIT(DP_PIN_ASSIGN_B)) -- cgit From b0fcdffdd6262d49d509a2945b2c2375a84f28af Mon Sep 17 00:00:00 2001 From: Heikki Krogerus Date: Fri, 1 Feb 2019 13:47:55 +0300 Subject: usb: typec: Prepare alt mode enter/exit reporting for UCSI alt mode support Because of UCSI, we have to support alt mode enter/exit reporting even when there is no alt mode driver bind to the alt mode device. With UCSI a firmware handles the alternate modes, and the modes are entered automatically from OS PoW. Changing typec_altmode_update_active() so that the driver module ref count is incremented/decremented only if there really is a driver for the alt mode. That avoids a NULL pointer dereference from happening when the driver is missing. Signed-off-by: Heikki Krogerus Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/class.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/typec/class.c b/drivers/usb/typec/class.c index 5db0593ca0bd..41c0d790a50f 100644 --- a/drivers/usb/typec/class.c +++ b/drivers/usb/typec/class.c @@ -277,7 +277,7 @@ void typec_altmode_update_active(struct typec_altmode *adev, bool active) if (adev->active == active) return; - if (!is_typec_port(adev->dev.parent)) { + if (!is_typec_port(adev->dev.parent) && adev->dev.driver) { if (!active) module_put(adev->dev.driver->owner); else -- cgit From 81534d5fa973fc10a48c245c08688e61ffe41366 Mon Sep 17 00:00:00 2001 From: Heikki Krogerus Date: Fri, 1 Feb 2019 13:47:56 +0300 Subject: usb: typec: ucsi: Remove debug.h file It's not needed. Moving everything from it to trace.c. Signed-off-by: Heikki Krogerus Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/ucsi/debug.h | 65 ------------------------------------------ drivers/usb/typec/ucsi/trace.c | 59 ++++++++++++++++++++++++++++++++++++++ drivers/usb/typec/ucsi/trace.h | 7 +++-- 3 files changed, 64 insertions(+), 67 deletions(-) delete mode 100644 drivers/usb/typec/ucsi/debug.h (limited to 'drivers/usb') diff --git a/drivers/usb/typec/ucsi/debug.h b/drivers/usb/typec/ucsi/debug.h deleted file mode 100644 index fdeff39df120..000000000000 --- a/drivers/usb/typec/ucsi/debug.h +++ /dev/null @@ -1,65 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#ifndef __UCSI_DEBUG_H -#define __UCSI_DEBUG_H - -#include "ucsi.h" - -static const char * const ucsi_cmd_strs[] = { - [0] = "Unknown command", - [UCSI_PPM_RESET] = "PPM_RESET", - [UCSI_CANCEL] = "CANCEL", - [UCSI_CONNECTOR_RESET] = "CONNECTOR_RESET", - [UCSI_ACK_CC_CI] = "ACK_CC_CI", - [UCSI_SET_NOTIFICATION_ENABLE] = "SET_NOTIFICATION_ENABLE", - [UCSI_GET_CAPABILITY] = "GET_CAPABILITY", - [UCSI_GET_CONNECTOR_CAPABILITY] = "GET_CONNECTOR_CAPABILITY", - [UCSI_SET_UOM] = "SET_UOM", - [UCSI_SET_UOR] = "SET_UOR", - [UCSI_SET_PDM] = "SET_PDM", - [UCSI_SET_PDR] = "SET_PDR", - [UCSI_GET_ALTERNATE_MODES] = "GET_ALTERNATE_MODES", - [UCSI_GET_CAM_SUPPORTED] = "GET_CAM_SUPPORTED", - [UCSI_GET_CURRENT_CAM] = "GET_CURRENT_CAM", - [UCSI_SET_NEW_CAM] = "SET_NEW_CAM", - [UCSI_GET_PDOS] = "GET_PDOS", - [UCSI_GET_CABLE_PROPERTY] = "GET_CABLE_PROPERTY", - [UCSI_GET_CONNECTOR_STATUS] = "GET_CONNECTOR_STATUS", - [UCSI_GET_ERROR_STATUS] = "GET_ERROR_STATUS", -}; - -static inline const char *ucsi_cmd_str(u64 raw_cmd) -{ - u8 cmd = raw_cmd & GENMASK(7, 0); - - return ucsi_cmd_strs[(cmd >= ARRAY_SIZE(ucsi_cmd_strs)) ? 0 : cmd]; -} - -static const char * const ucsi_ack_strs[] = { - [0] = "", - [UCSI_ACK_EVENT] = "event", - [UCSI_ACK_CMD] = "command", -}; - -static inline const char *ucsi_ack_str(u8 ack) -{ - return ucsi_ack_strs[(ack >= ARRAY_SIZE(ucsi_ack_strs)) ? 0 : ack]; -} - -static inline const char *ucsi_cci_str(u32 cci) -{ - if (cci & GENMASK(7, 0)) { - if (cci & BIT(29)) - return "Event pending (ACK completed)"; - if (cci & BIT(31)) - return "Event pending (command completed)"; - return "Connector Change"; - } - if (cci & BIT(29)) - return "ACK completed"; - if (cci & BIT(31)) - return "Command completed"; - - return ""; -} - -#endif /* __UCSI_DEBUG_H */ diff --git a/drivers/usb/typec/ucsi/trace.c b/drivers/usb/typec/ucsi/trace.c index d9a6ff6e673c..ffa3b4c3f338 100644 --- a/drivers/usb/typec/ucsi/trace.c +++ b/drivers/usb/typec/ucsi/trace.c @@ -1,3 +1,62 @@ // SPDX-License-Identifier: GPL-2.0 #define CREATE_TRACE_POINTS +#include "ucsi.h" #include "trace.h" + +static const char * const ucsi_cmd_strs[] = { + [0] = "Unknown command", + [UCSI_PPM_RESET] = "PPM_RESET", + [UCSI_CANCEL] = "CANCEL", + [UCSI_CONNECTOR_RESET] = "CONNECTOR_RESET", + [UCSI_ACK_CC_CI] = "ACK_CC_CI", + [UCSI_SET_NOTIFICATION_ENABLE] = "SET_NOTIFICATION_ENABLE", + [UCSI_GET_CAPABILITY] = "GET_CAPABILITY", + [UCSI_GET_CONNECTOR_CAPABILITY] = "GET_CONNECTOR_CAPABILITY", + [UCSI_SET_UOM] = "SET_UOM", + [UCSI_SET_UOR] = "SET_UOR", + [UCSI_SET_PDM] = "SET_PDM", + [UCSI_SET_PDR] = "SET_PDR", + [UCSI_GET_ALTERNATE_MODES] = "GET_ALTERNATE_MODES", + [UCSI_GET_CAM_SUPPORTED] = "GET_CAM_SUPPORTED", + [UCSI_GET_CURRENT_CAM] = "GET_CURRENT_CAM", + [UCSI_SET_NEW_CAM] = "SET_NEW_CAM", + [UCSI_GET_PDOS] = "GET_PDOS", + [UCSI_GET_CABLE_PROPERTY] = "GET_CABLE_PROPERTY", + [UCSI_GET_CONNECTOR_STATUS] = "GET_CONNECTOR_STATUS", + [UCSI_GET_ERROR_STATUS] = "GET_ERROR_STATUS", +}; + +const char *ucsi_cmd_str(u64 raw_cmd) +{ + u8 cmd = raw_cmd & GENMASK(7, 0); + + return ucsi_cmd_strs[(cmd >= ARRAY_SIZE(ucsi_cmd_strs)) ? 0 : cmd]; +} + +static const char * const ucsi_ack_strs[] = { + [0] = "", + [UCSI_ACK_EVENT] = "event", + [UCSI_ACK_CMD] = "command", +}; + +const char *ucsi_ack_str(u8 ack) +{ + return ucsi_ack_strs[(ack >= ARRAY_SIZE(ucsi_ack_strs)) ? 0 : ack]; +} + +const char *ucsi_cci_str(u32 cci) +{ + if (cci & GENMASK(7, 0)) { + if (cci & BIT(29)) + return "Event pending (ACK completed)"; + if (cci & BIT(31)) + return "Event pending (command completed)"; + return "Connector Change"; + } + if (cci & BIT(29)) + return "ACK completed"; + if (cci & BIT(31)) + return "Command completed"; + + return ""; +} diff --git a/drivers/usb/typec/ucsi/trace.h b/drivers/usb/typec/ucsi/trace.h index d5092446ecc6..5e2906df2db7 100644 --- a/drivers/usb/typec/ucsi/trace.h +++ b/drivers/usb/typec/ucsi/trace.h @@ -7,8 +7,11 @@ #define __UCSI_TRACE_H #include -#include "ucsi.h" -#include "debug.h" + +const char *ucsi_cmd_str(u64 raw_cmd); +const char *ucsi_ack_str(u8 ack); +const char *ucsi_cci_str(u32 cci); +const char *ucsi_recipient_str(u8 recipient); DECLARE_EVENT_CLASS(ucsi_log_ack, TP_PROTO(u8 ack), -- cgit From 54f64d5c983f939901dacc8cfc0983727c5c742e Mon Sep 17 00:00:00 2001 From: John Stultz Date: Tue, 5 Feb 2019 10:24:40 -0800 Subject: usb: f_fs: Avoid crash due to out-of-scope stack ptr access Since the 5.0 merge window opened, I've been seeing frequent crashes on suspend and reboot with the trace: [ 36.911170] Unable to handle kernel paging request at virtual address ffffff801153d660 [ 36.912769] Unable to handle kernel paging request at virtual address ffffff800004b564 ... [ 36.950666] Call trace: [ 36.950670] queued_spin_lock_slowpath+0x1cc/0x2c8 [ 36.950681] _raw_spin_lock_irqsave+0x64/0x78 [ 36.950692] complete+0x28/0x70 [ 36.950703] ffs_epfile_io_complete+0x3c/0x50 [ 36.950713] usb_gadget_giveback_request+0x34/0x108 [ 36.950721] dwc3_gadget_giveback+0x50/0x68 [ 36.950723] dwc3_thread_interrupt+0x358/0x1488 [ 36.950731] irq_thread_fn+0x30/0x88 [ 36.950734] irq_thread+0x114/0x1b0 [ 36.950739] kthread+0x104/0x130 [ 36.950747] ret_from_fork+0x10/0x1c I isolated this down to in ffs_epfile_io(): https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/usb/gadget/function/f_fs.c#n1065 Where the completion done is setup on the stack: DECLARE_COMPLETION_ONSTACK(done); Then later we setup a request and queue it, and wait for it: if (unlikely(wait_for_completion_interruptible(&done))) { /* * To avoid race condition with ffs_epfile_io_complete, * dequeue the request first then check * status. usb_ep_dequeue API should guarantee no race * condition with req->complete callback. */ usb_ep_dequeue(ep->ep, req); interrupted = ep->status < 0; } The problem is, that we end up being interrupted, dequeue the request, and exit. But then the irq triggers and we try calling complete() on the context pointer which points to now random stack space, which results in the panic. Alan Stern pointed out there is a bug here, in that the snippet above "assumes that usb_ep_dequeue() waits until the request has been completed." And that: wait_for_completion(&done); Is needed right after the usb_ep_dequeue(). Thus this patch implements that change. With it I no longer see the crashes on suspend or reboot. This issue seems to have been uncovered by behavioral changes in the dwc3 driver in commit fec9095bdef4e ("usb: dwc3: gadget: remove wait_end_transfer"). Cc: Alan Stern Cc: Felipe Balbi Cc: Zeng Tao Cc: Jack Pham Cc: Thinh Nguyen Cc: Chen Yu Cc: Jerry Zhang Cc: Lars-Peter Clausen Cc: Vincent Pelletier Cc: Andrzej Pietrasiewicz Cc: Greg Kroah-Hartman Cc: Linux USB List Suggested-by: Alan Stern Signed-off-by: John Stultz Signed-off-by: Felipe Balbi --- drivers/usb/gadget/function/f_fs.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c index 66a2c165b4b7..20413c276c61 100644 --- a/drivers/usb/gadget/function/f_fs.c +++ b/drivers/usb/gadget/function/f_fs.c @@ -1082,6 +1082,7 @@ static ssize_t ffs_epfile_io(struct file *file, struct ffs_io_data *io_data) * condition with req->complete callback. */ usb_ep_dequeue(ep->ep, req); + wait_for_completion(&done); interrupted = ep->status < 0; } -- cgit From 1b4a3b517157aab6ef86b79b87a38c7fafae0f43 Mon Sep 17 00:00:00 2001 From: Andrzej Pietrasiewicz Date: Thu, 13 Dec 2018 14:24:57 +0100 Subject: usb: gadget: Change Andrzej Pietrasiewicz's e-mail address My @samusung.com address is going to cease existing soon, so change it to an address which can actually be used to contact me. Signed-off-by: Andrzej Pietrasiewicz Signed-off-by: Felipe Balbi --- drivers/usb/gadget/function/u_ecm.h | 2 +- drivers/usb/gadget/function/u_eem.h | 2 +- drivers/usb/gadget/function/u_ether_configfs.h | 2 +- drivers/usb/gadget/function/u_fs.h | 2 +- drivers/usb/gadget/function/u_gether.h | 2 +- drivers/usb/gadget/function/u_hid.h | 2 +- drivers/usb/gadget/function/u_midi.h | 2 +- drivers/usb/gadget/function/u_ncm.h | 2 +- drivers/usb/gadget/function/u_printer.h | 2 +- drivers/usb/gadget/function/u_rndis.h | 2 +- drivers/usb/gadget/function/u_uac2.h | 2 +- drivers/usb/gadget/function/u_uvc.h | 2 +- drivers/usb/gadget/function/uvc_configfs.c | 2 +- drivers/usb/gadget/function/uvc_configfs.h | 2 +- drivers/usb/gadget/function/uvc_v4l2.h | 2 +- drivers/usb/gadget/function/uvc_video.h | 2 +- drivers/usb/gadget/u_f.c | 2 +- drivers/usb/gadget/u_f.h | 2 +- drivers/usb/gadget/u_os_desc.h | 2 +- 19 files changed, 19 insertions(+), 19 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/function/u_ecm.h b/drivers/usb/gadget/function/u_ecm.h index 050aa672ee7f..098ece573a5e 100644 --- a/drivers/usb/gadget/function/u_ecm.h +++ b/drivers/usb/gadget/function/u_ecm.h @@ -7,7 +7,7 @@ * Copyright (c) 2013 Samsung Electronics Co., Ltd. * http://www.samsung.com * - * Author: Andrzej Pietrasiewicz + * Author: Andrzej Pietrasiewicz */ #ifndef U_ECM_H diff --git a/drivers/usb/gadget/function/u_eem.h b/drivers/usb/gadget/function/u_eem.h index de3828d3e8f0..921386a375cf 100644 --- a/drivers/usb/gadget/function/u_eem.h +++ b/drivers/usb/gadget/function/u_eem.h @@ -7,7 +7,7 @@ * Copyright (c) 2013 Samsung Electronics Co., Ltd. * http://www.samsung.com * - * Author: Andrzej Pietrasiewicz + * Author: Andrzej Pietrasiewicz */ #ifndef U_EEM_H diff --git a/drivers/usb/gadget/function/u_ether_configfs.h b/drivers/usb/gadget/function/u_ether_configfs.h index cd33cee4d78b..d8b92485b727 100644 --- a/drivers/usb/gadget/function/u_ether_configfs.h +++ b/drivers/usb/gadget/function/u_ether_configfs.h @@ -7,7 +7,7 @@ * Copyright (c) 2013 Samsung Electronics Co., Ltd. * http://www.samsung.com * - * Author: Andrzej Pietrasiewicz + * Author: Andrzej Pietrasiewicz */ #ifndef __U_ETHER_CONFIGFS_H diff --git a/drivers/usb/gadget/function/u_fs.h b/drivers/usb/gadget/function/u_fs.h index c3aba4dfa958..f9b0cf67360d 100644 --- a/drivers/usb/gadget/function/u_fs.h +++ b/drivers/usb/gadget/function/u_fs.h @@ -7,7 +7,7 @@ * Copyright (c) 2013 Samsung Electronics Co., Ltd. * http://www.samsung.com * - * Author: Andrzej Pietrasiewicz + * Author: Andrzej Pietrasiewicz */ #ifndef U_FFS_H diff --git a/drivers/usb/gadget/function/u_gether.h b/drivers/usb/gadget/function/u_gether.h index 5b7e2eb90336..ce4f07626f96 100644 --- a/drivers/usb/gadget/function/u_gether.h +++ b/drivers/usb/gadget/function/u_gether.h @@ -7,7 +7,7 @@ * Copyright (c) 2013 Samsung Electronics Co., Ltd. * http://www.samsung.com * - * Author: Andrzej Pietrasiewicz + * Author: Andrzej Pietrasiewicz */ #ifndef U_GETHER_H diff --git a/drivers/usb/gadget/function/u_hid.h b/drivers/usb/gadget/function/u_hid.h index 2f5ca4bfa7ff..1594bfa312eb 100644 --- a/drivers/usb/gadget/function/u_hid.h +++ b/drivers/usb/gadget/function/u_hid.h @@ -7,7 +7,7 @@ * Copyright (c) 2014 Samsung Electronics Co., Ltd. * http://www.samsung.com * - * Author: Andrzej Pietrasiewicz + * Author: Andrzej Pietrasiewicz */ #ifndef U_HID_H diff --git a/drivers/usb/gadget/function/u_midi.h b/drivers/usb/gadget/function/u_midi.h index 5599aa5fc977..29bf006c0a13 100644 --- a/drivers/usb/gadget/function/u_midi.h +++ b/drivers/usb/gadget/function/u_midi.h @@ -7,7 +7,7 @@ * Copyright (c) 2014 Samsung Electronics Co., Ltd. * http://www.samsung.com * - * Author: Andrzej Pietrasiewicz + * Author: Andrzej Pietrasiewicz */ #ifndef U_MIDI_H diff --git a/drivers/usb/gadget/function/u_ncm.h b/drivers/usb/gadget/function/u_ncm.h index 67324f983343..d483e45c0f77 100644 --- a/drivers/usb/gadget/function/u_ncm.h +++ b/drivers/usb/gadget/function/u_ncm.h @@ -7,7 +7,7 @@ * Copyright (c) 2013 Samsung Electronics Co., Ltd. * http://www.samsung.com * - * Author: Andrzej Pietrasiewicz + * Author: Andrzej Pietrasiewicz */ #ifndef U_NCM_H diff --git a/drivers/usb/gadget/function/u_printer.h b/drivers/usb/gadget/function/u_printer.h index 6088ff744194..78797764f478 100644 --- a/drivers/usb/gadget/function/u_printer.h +++ b/drivers/usb/gadget/function/u_printer.h @@ -7,7 +7,7 @@ * Copyright (c) 2015 Samsung Electronics Co., Ltd. * http://www.samsung.com * - * Author: Andrzej Pietrasiewicz + * Author: Andrzej Pietrasiewicz */ #ifndef U_PRINTER_H diff --git a/drivers/usb/gadget/function/u_rndis.h b/drivers/usb/gadget/function/u_rndis.h index d65fb4ebac3c..1e148b76f339 100644 --- a/drivers/usb/gadget/function/u_rndis.h +++ b/drivers/usb/gadget/function/u_rndis.h @@ -7,7 +7,7 @@ * Copyright (c) 2013 Samsung Electronics Co., Ltd. * http://www.samsung.com * - * Author: Andrzej Pietrasiewicz + * Author: Andrzej Pietrasiewicz */ #ifndef U_RNDIS_H diff --git a/drivers/usb/gadget/function/u_uac2.h b/drivers/usb/gadget/function/u_uac2.h index 8362ee572e1e..82048791eb6e 100644 --- a/drivers/usb/gadget/function/u_uac2.h +++ b/drivers/usb/gadget/function/u_uac2.h @@ -7,7 +7,7 @@ * Copyright (c) 2014 Samsung Electronics Co., Ltd. * http://www.samsung.com * - * Author: Andrzej Pietrasiewicz + * Author: Andrzej Pietrasiewicz */ #ifndef U_UAC2_H diff --git a/drivers/usb/gadget/function/u_uvc.h b/drivers/usb/gadget/function/u_uvc.h index 5242d489e20a..16da49a2fcf2 100644 --- a/drivers/usb/gadget/function/u_uvc.h +++ b/drivers/usb/gadget/function/u_uvc.h @@ -7,7 +7,7 @@ * Copyright (c) 2013-2014 Samsung Electronics Co., Ltd. * http://www.samsung.com * - * Author: Andrzej Pietrasiewicz + * Author: Andrzej Pietrasiewicz */ #ifndef U_UVC_H diff --git a/drivers/usb/gadget/function/uvc_configfs.c b/drivers/usb/gadget/function/uvc_configfs.c index 8fe85cb4e87e..00fb58e50a15 100644 --- a/drivers/usb/gadget/function/uvc_configfs.c +++ b/drivers/usb/gadget/function/uvc_configfs.c @@ -7,7 +7,7 @@ * Copyright (c) 2014 Samsung Electronics Co., Ltd. * http://www.samsung.com * - * Author: Andrzej Pietrasiewicz + * Author: Andrzej Pietrasiewicz */ #include diff --git a/drivers/usb/gadget/function/uvc_configfs.h b/drivers/usb/gadget/function/uvc_configfs.h index 8549c0b27b9d..341391dbc81f 100644 --- a/drivers/usb/gadget/function/uvc_configfs.h +++ b/drivers/usb/gadget/function/uvc_configfs.h @@ -7,7 +7,7 @@ * Copyright (c) 2014 Samsung Electronics Co., Ltd. * http://www.samsung.com * - * Author: Andrzej Pietrasiewicz + * Author: Andrzej Pietrasiewicz */ #ifndef UVC_CONFIGFS_H #define UVC_CONFIGFS_H diff --git a/drivers/usb/gadget/function/uvc_v4l2.h b/drivers/usb/gadget/function/uvc_v4l2.h index a75e9c397446..452d71059b3f 100644 --- a/drivers/usb/gadget/function/uvc_v4l2.h +++ b/drivers/usb/gadget/function/uvc_v4l2.h @@ -7,7 +7,7 @@ * * Copyright (c) 2013 Samsung Electronics Co., Ltd. * http://www.samsung.com - * Author: Andrzej Pietrasiewicz + * Author: Andrzej Pietrasiewicz */ #ifndef __UVC_V4L2_H__ diff --git a/drivers/usb/gadget/function/uvc_video.h b/drivers/usb/gadget/function/uvc_video.h index 278dc52c7604..dff12103f696 100644 --- a/drivers/usb/gadget/function/uvc_video.h +++ b/drivers/usb/gadget/function/uvc_video.h @@ -7,7 +7,7 @@ * * Copyright (c) 2013 Samsung Electronics Co., Ltd. * http://www.samsung.com - * Author: Andrzej Pietrasiewicz + * Author: Andrzej Pietrasiewicz */ #ifndef __UVC_VIDEO_H__ #define __UVC_VIDEO_H__ diff --git a/drivers/usb/gadget/u_f.c b/drivers/usb/gadget/u_f.c index dbaa46eee853..6aea1ecb3999 100644 --- a/drivers/usb/gadget/u_f.c +++ b/drivers/usb/gadget/u_f.c @@ -5,7 +5,7 @@ * Copyright (c) 2013 Samsung Electronics Co., Ltd. * http://www.samsung.com * - * Author: Andrzej Pietrasiewicz + * Author: Andrzej Pietrasiewicz */ #include "u_f.h" diff --git a/drivers/usb/gadget/u_f.h b/drivers/usb/gadget/u_f.h index 09f90447fed5..eaa13fd3dc7f 100644 --- a/drivers/usb/gadget/u_f.h +++ b/drivers/usb/gadget/u_f.h @@ -7,7 +7,7 @@ * Copyright (c) 2013 Samsung Electronics Co., Ltd. * http://www.samsung.com * - * Author: Andrzej Pietrasiewicz + * Author: Andrzej Pietrasiewicz */ #ifndef __U_F_H__ diff --git a/drivers/usb/gadget/u_os_desc.h b/drivers/usb/gadget/u_os_desc.h index 8acd21779ac8..5d7d35c8cc31 100644 --- a/drivers/usb/gadget/u_os_desc.h +++ b/drivers/usb/gadget/u_os_desc.h @@ -7,7 +7,7 @@ * Copyright (c) 2014 Samsung Electronics Co., Ltd. * http://www.samsung.com * - * Author: Andrzej Pietrasiewicz + * Author: Andrzej Pietrasiewicz */ #ifndef __U_OS_DESC_H__ -- cgit From 8c7ffa5ebd4e56ac0a7dcc70fa6da94171d8985d Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Fri, 1 Feb 2019 09:47:55 +0100 Subject: fotg210-udc: remove a bogus dma_sync_single_for_device call dma_map_single already transfers ownership to the device. Signed-off-by: Christoph Hellwig Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/fotg210-udc.c | 4 ---- 1 file changed, 4 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/udc/fotg210-udc.c b/drivers/usb/gadget/udc/fotg210-udc.c index bc6abaea907d..fe9cf415f2f1 100644 --- a/drivers/usb/gadget/udc/fotg210-udc.c +++ b/drivers/usb/gadget/udc/fotg210-udc.c @@ -356,10 +356,6 @@ static void fotg210_start_dma(struct fotg210_ep *ep, return; } - dma_sync_single_for_device(NULL, d, length, - ep->dir_in ? DMA_TO_DEVICE : - DMA_FROM_DEVICE); - fotg210_enable_dma(ep, d, length); /* check if dma is done */ -- cgit From e26bdb013150b055f9a5a8c1e6026528ee383ba4 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Fri, 1 Feb 2019 09:47:56 +0100 Subject: fotg210-udc: pass struct device to DMA API functions The DMA API generally relies on a struct device to work properly, and only barely works without one for legacy reasons. Pass the easily available struct device from the platform_device to remedy this. Signed-off-by: Christoph Hellwig Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/fotg210-udc.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/udc/fotg210-udc.c b/drivers/usb/gadget/udc/fotg210-udc.c index fe9cf415f2f1..cec49294bac6 100644 --- a/drivers/usb/gadget/udc/fotg210-udc.c +++ b/drivers/usb/gadget/udc/fotg210-udc.c @@ -326,6 +326,7 @@ dma_reset: static void fotg210_start_dma(struct fotg210_ep *ep, struct fotg210_request *req) { + struct device *dev = &ep->fotg210->gadget.dev; dma_addr_t d; u8 *buffer; u32 length; @@ -348,10 +349,10 @@ static void fotg210_start_dma(struct fotg210_ep *ep, length = req->req.length; } - d = dma_map_single(NULL, buffer, length, + d = dma_map_single(dev, buffer, length, ep->dir_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE); - if (dma_mapping_error(NULL, d)) { + if (dma_mapping_error(dev, d)) { pr_err("dma_mapping_error\n"); return; } @@ -366,7 +367,7 @@ static void fotg210_start_dma(struct fotg210_ep *ep, /* update actual transfer length */ req->req.actual += length; - dma_unmap_single(NULL, d, length, DMA_TO_DEVICE); + dma_unmap_single(dev, d, length, DMA_TO_DEVICE); } static void fotg210_ep0_queue(struct fotg210_ep *ep, -- cgit From fce11867472bf6710693bbe83f1fd9ab5fcc7f0e Mon Sep 17 00:00:00 2001 From: Colin Ian King Date: Mon, 11 Feb 2019 11:14:46 -0600 Subject: USB: musb: fix indentation issue on a return statement A return statement is indented one level too far, fix this by removing a tab. Signed-off-by: Colin Ian King Signed-off-by: Bin Liu Signed-off-by: Greg Kroah-Hartman --- drivers/usb/musb/musb_host.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c index b59ce9ad14ce..0b1eb15b6b08 100644 --- a/drivers/usb/musb/musb_host.c +++ b/drivers/usb/musb/musb_host.c @@ -1283,7 +1283,7 @@ void musb_host_tx(struct musb *musb, u8 epnum) MUSB_TXCSR_H_WZC_BITS | MUSB_TXCSR_TXPKTRDY); } - return; + return; } done: -- cgit From e2d5e09485fc5363d4be58ae04303e54a5956aa7 Mon Sep 17 00:00:00 2001 From: Paul Cercueil Date: Mon, 11 Feb 2019 11:14:48 -0600 Subject: usb: musb: jz4740: Add support for devicetree Add support for probing the driver from devicetree. Signed-off-by: Paul Cercueil Signed-off-by: Bin Liu Signed-off-by: Greg Kroah-Hartman --- drivers/usb/musb/jz4740.c | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/musb/jz4740.c b/drivers/usb/musb/jz4740.c index 04d8b2bc205a..a60627bf7be3 100644 --- a/drivers/usb/musb/jz4740.c +++ b/drivers/usb/musb/jz4740.c @@ -10,6 +10,7 @@ #include #include #include +#include #include #include @@ -188,11 +189,20 @@ static int jz4740_remove(struct platform_device *pdev) return 0; } +#ifdef CONFIG_OF +static const struct of_device_id jz4740_musb_of_match[] = { + { .compatible = "ingenic,jz4740-musb" }, + {}, +}; +MODULE_DEVICE_TABLE(of, jz4740_musb_of_match); +#endif + static struct platform_driver jz4740_driver = { .probe = jz4740_probe, .remove = jz4740_remove, .driver = { .name = "musb-jz4740", + .of_match_table = of_match_ptr(jz4740_musb_of_match), }, }; -- cgit From 874b08ba756eef952fd89051816b62fd82a56657 Mon Sep 17 00:00:00 2001 From: Paul Cercueil Date: Mon, 11 Feb 2019 11:14:49 -0600 Subject: usb: musb: Kconfig: Drop dependency on MACH_JZ4740 for jz4740 Depending on MACH_JZ4740 prevent us from creating a generic kernel that works on more than one MIPS board. Instead, we just depend on MIPS being set. Signed-off-by: Paul Cercueil Signed-off-by: Bin Liu Signed-off-by: Greg Kroah-Hartman --- drivers/usb/musb/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/musb/Kconfig b/drivers/usb/musb/Kconfig index 38ff15da8ac8..a23719bb2482 100644 --- a/drivers/usb/musb/Kconfig +++ b/drivers/usb/musb/Kconfig @@ -112,7 +112,7 @@ config USB_MUSB_UX500 config USB_MUSB_JZ4740 tristate "JZ4740" depends on NOP_USB_XCEIV - depends on MACH_JZ4740 || COMPILE_TEST + depends on MIPS || COMPILE_TEST depends on USB_MUSB_GADGET depends on USB_OTG_BLACKLIST_HUB -- cgit From c94444057282a5cc96532927779ea9a7142f667b Mon Sep 17 00:00:00 2001 From: Paul Cercueil Date: Mon, 11 Feb 2019 11:14:50 -0600 Subject: usb: musb: Kconfig: Drop dependency on CONFIG_USB for jz4740 The Kconfig entry previously depended on USB_OTG_BLACKLIST_HUB unconditionally, which is an option that is only available when CONFIG_USB is enabled. However, the USB IP in the JZ4740 SoC does not support host mode, only gadget mode, so it makes sense to allow it to build when CONFIG_USB is not set. Signed-off-by: Paul Cercueil Signed-off-by: Bin Liu Signed-off-by: Greg Kroah-Hartman --- drivers/usb/musb/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/musb/Kconfig b/drivers/usb/musb/Kconfig index a23719bb2482..f742fddc5e2c 100644 --- a/drivers/usb/musb/Kconfig +++ b/drivers/usb/musb/Kconfig @@ -114,7 +114,7 @@ config USB_MUSB_JZ4740 depends on NOP_USB_XCEIV depends on MIPS || COMPILE_TEST depends on USB_MUSB_GADGET - depends on USB_OTG_BLACKLIST_HUB + depends on USB=n || USB_OTG_BLACKLIST_HUB config USB_MUSB_AM335X_CHILD tristate -- cgit From 08e46f18b7d04ce4892c7542e89c2de4ae359987 Mon Sep 17 00:00:00 2001 From: Bartosz Golaszewski Date: Mon, 11 Feb 2019 11:36:55 +0100 Subject: usb: ohci-da8xx: add a new line after local variables Add a new line after local variables. This improves the coding style. Signed-off-by: Bartosz Golaszewski Acked-by: Alan Stern Signed-off-by: Sekhar Nori --- drivers/usb/host/ohci-da8xx.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/usb') diff --git a/drivers/usb/host/ohci-da8xx.c b/drivers/usb/host/ohci-da8xx.c index a55cbba40a5a..c492c7e6f746 100644 --- a/drivers/usb/host/ohci-da8xx.c +++ b/drivers/usb/host/ohci-da8xx.c @@ -405,6 +405,7 @@ static int ohci_da8xx_probe(struct platform_device *pdev) struct usb_hcd *hcd; struct resource *mem; int error, irq; + hcd = usb_create_hcd(&ohci_da8xx_hc_driver, &pdev->dev, dev_name(&pdev->dev)); if (!hcd) -- cgit From 3d2ab9f35ebda97de7392716022a4ed8ab646861 Mon Sep 17 00:00:00 2001 From: Bartosz Golaszewski Date: Mon, 11 Feb 2019 11:36:56 +0100 Subject: usb: ohci-da8xx: add a helper pointer to &pdev->dev Add a helper pointer to &pdev->dev. This improves readability by removing all the &pdev->dev dereferencing. Signed-off-by: Bartosz Golaszewski Acked-by: Alan Stern Signed-off-by: Sekhar Nori --- drivers/usb/host/ohci-da8xx.c | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/host/ohci-da8xx.c b/drivers/usb/host/ohci-da8xx.c index c492c7e6f746..e8ede0b5e3f0 100644 --- a/drivers/usb/host/ohci-da8xx.c +++ b/drivers/usb/host/ohci-da8xx.c @@ -402,35 +402,35 @@ MODULE_DEVICE_TABLE(of, da8xx_ohci_ids); static int ohci_da8xx_probe(struct platform_device *pdev) { struct da8xx_ohci_hcd *da8xx_ohci; + struct device *dev = &pdev->dev; struct usb_hcd *hcd; struct resource *mem; int error, irq; - hcd = usb_create_hcd(&ohci_da8xx_hc_driver, &pdev->dev, - dev_name(&pdev->dev)); + hcd = usb_create_hcd(&ohci_da8xx_hc_driver, dev, dev_name(dev)); if (!hcd) return -ENOMEM; da8xx_ohci = to_da8xx_ohci(hcd); da8xx_ohci->hcd = hcd; - da8xx_ohci->usb11_clk = devm_clk_get(&pdev->dev, NULL); + da8xx_ohci->usb11_clk = devm_clk_get(dev, NULL); if (IS_ERR(da8xx_ohci->usb11_clk)) { error = PTR_ERR(da8xx_ohci->usb11_clk); if (error != -EPROBE_DEFER) - dev_err(&pdev->dev, "Failed to get clock.\n"); + dev_err(dev, "Failed to get clock.\n"); goto err; } - da8xx_ohci->usb11_phy = devm_phy_get(&pdev->dev, "usb-phy"); + da8xx_ohci->usb11_phy = devm_phy_get(dev, "usb-phy"); if (IS_ERR(da8xx_ohci->usb11_phy)) { error = PTR_ERR(da8xx_ohci->usb11_phy); if (error != -EPROBE_DEFER) - dev_err(&pdev->dev, "Failed to get phy.\n"); + dev_err(dev, "Failed to get phy.\n"); goto err; } - da8xx_ohci->vbus_reg = devm_regulator_get_optional(&pdev->dev, "vbus"); + da8xx_ohci->vbus_reg = devm_regulator_get_optional(dev, "vbus"); if (IS_ERR(da8xx_ohci->vbus_reg)) { error = PTR_ERR(da8xx_ohci->vbus_reg); if (error == -ENODEV) { @@ -438,13 +438,13 @@ static int ohci_da8xx_probe(struct platform_device *pdev) } else if (error == -EPROBE_DEFER) { goto err; } else { - dev_err(&pdev->dev, "Failed to get regulator\n"); + dev_err(dev, "Failed to get regulator\n"); goto err; } } mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); - hcd->regs = devm_ioremap_resource(&pdev->dev, mem); + hcd->regs = devm_ioremap_resource(dev, mem); if (IS_ERR(hcd->regs)) { error = PTR_ERR(hcd->regs); goto err; -- cgit From d193abf1c91307d8a2d5a3b984ddcf66f5dcfbea Mon Sep 17 00:00:00 2001 From: Bartosz Golaszewski Date: Mon, 11 Feb 2019 11:36:59 +0100 Subject: usb: ohci-da8xx: add vbus and overcurrent gpios There are two users upstream which register external callbacks for switching the port power on/off and overcurrent protection. Both users only use two GPIOs for that. Instead of having that functionality in the board files, move the logic into the OHCI driver - including the interrupt handler for overcurrent detection. Signed-off-by: Bartosz Golaszewski Acked-by: Alan Stern Signed-off-by: Sekhar Nori --- drivers/usb/host/ohci-da8xx.c | 99 ++++++++++++++++++++++--------------------- 1 file changed, 50 insertions(+), 49 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/host/ohci-da8xx.c b/drivers/usb/host/ohci-da8xx.c index e8ede0b5e3f0..ca8a94f15ac0 100644 --- a/drivers/usb/host/ohci-da8xx.c +++ b/drivers/usb/host/ohci-da8xx.c @@ -9,6 +9,7 @@ */ #include +#include #include #include #include @@ -40,6 +41,8 @@ struct da8xx_ohci_hcd { struct regulator *vbus_reg; struct notifier_block nb; unsigned int reg_enabled; + struct gpio_desc *vbus_gpio; + struct gpio_desc *oc_gpio; }; #define to_da8xx_ohci(hcd) (struct da8xx_ohci_hcd *)(hcd_to_ohci(hcd)->priv) @@ -86,12 +89,13 @@ static void ohci_da8xx_disable(struct usb_hcd *hcd) static int ohci_da8xx_set_power(struct usb_hcd *hcd, int on) { struct da8xx_ohci_hcd *da8xx_ohci = to_da8xx_ohci(hcd); - struct device *dev = hcd->self.controller; - struct da8xx_ohci_root_hub *hub = dev_get_platdata(dev); + struct device *dev = hcd->self.controller; int ret; - if (hub && hub->set_power) - return hub->set_power(1, on); + if (da8xx_ohci->vbus_gpio) { + gpiod_set_value_cansleep(da8xx_ohci->vbus_gpio, on); + return 0; + } if (!da8xx_ohci->vbus_reg) return 0; @@ -119,11 +123,9 @@ static int ohci_da8xx_set_power(struct usb_hcd *hcd, int on) static int ohci_da8xx_get_power(struct usb_hcd *hcd) { struct da8xx_ohci_hcd *da8xx_ohci = to_da8xx_ohci(hcd); - struct device *dev = hcd->self.controller; - struct da8xx_ohci_root_hub *hub = dev_get_platdata(dev); - if (hub && hub->get_power) - return hub->get_power(1); + if (da8xx_ohci->vbus_gpio) + return gpiod_get_value_cansleep(da8xx_ohci->vbus_gpio); if (da8xx_ohci->vbus_reg) return regulator_is_enabled(da8xx_ohci->vbus_reg); @@ -134,13 +136,11 @@ static int ohci_da8xx_get_power(struct usb_hcd *hcd) static int ohci_da8xx_get_oci(struct usb_hcd *hcd) { struct da8xx_ohci_hcd *da8xx_ohci = to_da8xx_ohci(hcd); - struct device *dev = hcd->self.controller; - struct da8xx_ohci_root_hub *hub = dev_get_platdata(dev); unsigned int flags; int ret; - if (hub && hub->get_oci) - return hub->get_oci(1); + if (da8xx_ohci->oc_gpio) + return gpiod_get_value_cansleep(da8xx_ohci->oc_gpio); if (!da8xx_ohci->vbus_reg) return 0; @@ -158,10 +158,8 @@ static int ohci_da8xx_get_oci(struct usb_hcd *hcd) static int ohci_da8xx_has_set_power(struct usb_hcd *hcd) { struct da8xx_ohci_hcd *da8xx_ohci = to_da8xx_ohci(hcd); - struct device *dev = hcd->self.controller; - struct da8xx_ohci_root_hub *hub = dev_get_platdata(dev); - if (hub && hub->set_power) + if (da8xx_ohci->vbus_gpio) return 1; if (da8xx_ohci->vbus_reg) @@ -173,10 +171,8 @@ static int ohci_da8xx_has_set_power(struct usb_hcd *hcd) static int ohci_da8xx_has_oci(struct usb_hcd *hcd) { struct da8xx_ohci_hcd *da8xx_ohci = to_da8xx_ohci(hcd); - struct device *dev = hcd->self.controller; - struct da8xx_ohci_root_hub *hub = dev_get_platdata(dev); - if (hub && hub->get_oci) + if (da8xx_ohci->oc_gpio) return 1; if (da8xx_ohci->vbus_reg) @@ -196,19 +192,6 @@ static int ohci_da8xx_has_potpgt(struct usb_hcd *hcd) return 0; } -/* - * Handle the port over-current indicator change. - */ -static void ohci_da8xx_ocic_handler(struct da8xx_ohci_root_hub *hub, - unsigned port) -{ - ocic_mask |= 1 << port; - - /* Once over-current is detected, the port needs to be powered down */ - if (hub->get_oci(port) > 0) - hub->set_power(port, 0); -} - static int ohci_da8xx_regulator_event(struct notifier_block *nb, unsigned long event, void *data) { @@ -223,16 +206,23 @@ static int ohci_da8xx_regulator_event(struct notifier_block *nb, return 0; } +static irqreturn_t ohci_da8xx_oc_handler(int irq, void *data) +{ + struct da8xx_ohci_hcd *da8xx_ohci = data; + + if (gpiod_get_value(da8xx_ohci->oc_gpio)) + gpiod_set_value(da8xx_ohci->vbus_gpio, 0); + + return IRQ_HANDLED; +} + static int ohci_da8xx_register_notify(struct usb_hcd *hcd) { struct da8xx_ohci_hcd *da8xx_ohci = to_da8xx_ohci(hcd); struct device *dev = hcd->self.controller; - struct da8xx_ohci_root_hub *hub = dev_get_platdata(dev); int ret = 0; - if (hub && hub->ocic_notify) { - ret = hub->ocic_notify(ohci_da8xx_ocic_handler); - } else if (da8xx_ohci->vbus_reg) { + if (!da8xx_ohci->oc_gpio && da8xx_ohci->vbus_reg) { da8xx_ohci->nb.notifier_call = ohci_da8xx_regulator_event; ret = devm_regulator_register_notifier(da8xx_ohci->vbus_reg, &da8xx_ohci->nb); @@ -244,15 +234,6 @@ static int ohci_da8xx_register_notify(struct usb_hcd *hcd) return ret; } -static void ohci_da8xx_unregister_notify(struct usb_hcd *hcd) -{ - struct device *dev = hcd->self.controller; - struct da8xx_ohci_root_hub *hub = dev_get_platdata(dev); - - if (hub && hub->ocic_notify) - hub->ocic_notify(NULL); -} - static int ohci_da8xx_reset(struct usb_hcd *hcd) { struct device *dev = hcd->self.controller; @@ -403,9 +384,9 @@ static int ohci_da8xx_probe(struct platform_device *pdev) { struct da8xx_ohci_hcd *da8xx_ohci; struct device *dev = &pdev->dev; + int error, hcd_irq, oc_irq; struct usb_hcd *hcd; struct resource *mem; - int error, irq; hcd = usb_create_hcd(&ohci_da8xx_hc_driver, dev, dev_name(dev)); if (!hcd) @@ -443,6 +424,27 @@ static int ohci_da8xx_probe(struct platform_device *pdev) } } + da8xx_ohci->vbus_gpio = devm_gpiod_get_optional(dev, "vbus", + GPIOD_OUT_HIGH); + if (IS_ERR(da8xx_ohci->vbus_gpio)) + goto err; + + da8xx_ohci->oc_gpio = devm_gpiod_get_optional(dev, "oc", GPIOD_IN); + if (IS_ERR(da8xx_ohci->oc_gpio)) + goto err; + + if (da8xx_ohci->oc_gpio) { + oc_irq = gpiod_to_irq(da8xx_ohci->oc_gpio); + if (oc_irq < 0) + goto err; + + error = devm_request_irq(dev, oc_irq, ohci_da8xx_oc_handler, + IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, + "OHCI over-current indicator", da8xx_ohci); + if (error) + goto err; + } + mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); hcd->regs = devm_ioremap_resource(dev, mem); if (IS_ERR(hcd->regs)) { @@ -452,13 +454,13 @@ static int ohci_da8xx_probe(struct platform_device *pdev) hcd->rsrc_start = mem->start; hcd->rsrc_len = resource_size(mem); - irq = platform_get_irq(pdev, 0); - if (irq < 0) { + hcd_irq = platform_get_irq(pdev, 0); + if (hcd_irq < 0) { error = -ENODEV; goto err; } - error = usb_add_hcd(hcd, irq, 0); + error = usb_add_hcd(hcd, hcd_irq, 0); if (error) goto err; @@ -481,7 +483,6 @@ static int ohci_da8xx_remove(struct platform_device *pdev) { struct usb_hcd *hcd = platform_get_drvdata(pdev); - ohci_da8xx_unregister_notify(hcd); usb_remove_hcd(hcd); usb_put_hcd(hcd); -- cgit From a8ded8eb7765233471b24bd23bdd65b44da5583a Mon Sep 17 00:00:00 2001 From: Colin Ian King Date: Fri, 8 Feb 2019 15:52:59 +0000 Subject: usb: host: oxu210hp-hcd: fix indentation issue A statement is indented too deeply, fix this by removing a tab. Signed-off-by: Colin Ian King Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/oxu210hp-hcd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/host/oxu210hp-hcd.c b/drivers/usb/host/oxu210hp-hcd.c index c5e6e8d0b5ef..f06a291f05f8 100644 --- a/drivers/usb/host/oxu210hp-hcd.c +++ b/drivers/usb/host/oxu210hp-hcd.c @@ -1323,7 +1323,7 @@ static struct list_head *qh_urb_transaction(struct oxu_hcd *oxu, } /* by default, enable interrupt on urb completion */ - qtd->hw_token |= cpu_to_le32(QTD_IOC); + qtd->hw_token |= cpu_to_le32(QTD_IOC); return head; cleanup: -- cgit From 229531be6918906e92da5647c755ee8205fc1d7f Mon Sep 17 00:00:00 2001 From: Bart Van Assche Date: Fri, 8 Feb 2019 13:25:01 -0800 Subject: scsi: uas: Use scsi_[gs]et_resid() where appropriate This patch does not change any functionality. Cc: Oliver Neukum Signed-off-by: Bart Van Assche Acked-by: Oliver Neukum Reviewed-by: Christoph Hellwig Signed-off-by: Martin K. Petersen --- drivers/usb/storage/uas.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/storage/uas.c b/drivers/usb/storage/uas.c index 95f2142093d5..a6d68191c861 100644 --- a/drivers/usb/storage/uas.c +++ b/drivers/usb/storage/uas.c @@ -395,9 +395,9 @@ static void uas_data_cmplt(struct urb *urb) if (status != -ENOENT && status != -ECONNRESET && status != -ESHUTDOWN) uas_log_cmd_state(cmnd, "data cmplt err", status); /* error: no data transfered */ - sdb->resid = sdb->length; + scsi_set_resid(cmnd, sdb->length); } else { - sdb->resid = sdb->length - urb->actual_length; + scsi_set_resid(cmnd, sdb->length - urb->actual_length); } uas_try_complete(cmnd, __func__); out: -- cgit From c5353b225df9b2d0cf881873eef6f680e43c9aa2 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Wed, 13 Feb 2019 13:00:54 +0200 Subject: usb: dwc3: gadget: don't enable interrupt when disabling endpoint Since we're disabling the endpoint anyway, we don't worry about getting endpoint command completion interrupt. Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/gadget.c | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 8425b6dab875..b63aa1874727 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -687,12 +687,13 @@ out: return 0; } -static void dwc3_stop_active_transfer(struct dwc3_ep *dep, bool force); +static void dwc3_stop_active_transfer(struct dwc3_ep *dep, bool force, + bool interrupt); static void dwc3_remove_requests(struct dwc3 *dwc, struct dwc3_ep *dep) { struct dwc3_request *req; - dwc3_stop_active_transfer(dep, true); + dwc3_stop_active_transfer(dep, true, false); /* - giveback all requests to gadget driver */ while (!list_empty(&dep->started_list)) { @@ -1350,7 +1351,7 @@ static int dwc3_gadget_start_isoc_quirk(struct dwc3_ep *dep) * to wait for the next XferNotReady to test the command again */ if (cmd_status == 0) { - dwc3_stop_active_transfer(dep, true); + dwc3_stop_active_transfer(dep, true, true); return 0; } } @@ -1543,7 +1544,7 @@ static int dwc3_gadget_ep_dequeue(struct usb_ep *ep, } if (r == req) { /* wait until it is processed */ - dwc3_stop_active_transfer(dep, true); + dwc3_stop_active_transfer(dep, true, true); if (!r->trb) goto out0; @@ -2500,7 +2501,7 @@ static void dwc3_gadget_endpoint_transfer_in_progress(struct dwc3_ep *dep, dwc3_gadget_ep_cleanup_completed_requests(dep, event, status); if (stop) { - dwc3_stop_active_transfer(dep, true); + dwc3_stop_active_transfer(dep, true, true); dep->flags = DWC3_EP_ENABLED; } @@ -2621,7 +2622,8 @@ static void dwc3_reset_gadget(struct dwc3 *dwc) } } -static void dwc3_stop_active_transfer(struct dwc3_ep *dep, bool force) +static void dwc3_stop_active_transfer(struct dwc3_ep *dep, bool force, + bool interrupt) { struct dwc3 *dwc = dep->dwc; struct dwc3_gadget_ep_cmd_params params; @@ -2664,7 +2666,7 @@ static void dwc3_stop_active_transfer(struct dwc3_ep *dep, bool force) cmd = DWC3_DEPCMD_ENDTRANSFER; cmd |= force ? DWC3_DEPCMD_HIPRI_FORCERM : 0; - cmd |= DWC3_DEPCMD_CMDIOC; + cmd |= interrupt ? DWC3_DEPCMD_CMDIOC : 0; cmd |= DWC3_DEPCMD_PARAM(dep->resource_index); memset(¶ms, 0, sizeof(params)); ret = dwc3_send_gadget_ep_cmd(dep, cmd, ¶ms); -- cgit From c7152763f02e05567da27462b2277a554e507c89 Mon Sep 17 00:00:00 2001 From: Thinh Nguyen Date: Tue, 12 Feb 2019 19:39:27 -0800 Subject: usb: dwc3: Reset num_trbs after skipping Currently req->num_trbs is not reset after the TRBs are skipped and processed from the cancelled list. The gadget driver may reuse the request with an invalid req->num_trbs, and DWC3 will incorrectly skip trbs. To fix this, simply reset req->num_trbs to 0 after skipping through all of them. Fixes: c3acd5901414 ("usb: dwc3: gadget: use num_trbs when skipping TRBs on ->dequeue()") Signed-off-by: Thinh Nguyen Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/gadget.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index b63aa1874727..f2d7b744def3 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -1503,6 +1503,8 @@ static void dwc3_gadget_ep_skip_trbs(struct dwc3_ep *dep, struct dwc3_request *r trb->ctrl &= ~DWC3_TRB_CTRL_HWO; dwc3_ep_inc_deq(dep); } + + req->num_trbs = 0; } static void dwc3_gadget_ep_cleanup_cancelled_requests(struct dwc3_ep *dep) -- cgit From 0d1ec194721f844a6b20f7f4854332adcebc6fb9 Mon Sep 17 00:00:00 2001 From: Peter Chen Date: Tue, 12 Feb 2019 08:57:27 +0000 Subject: usb: misc: usbtest: add super-speed isoc support The calculation of packet number within microframe is different between high-speed and super-speed endpoint, we add support for super-speed in this patch. Cc: Pawel Laszczak Signed-off-by: Peter Chen Signed-off-by: Felipe Balbi --- drivers/usb/misc/usbtest.c | 28 ++++++++++++++++++++++++---- 1 file changed, 24 insertions(+), 4 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/misc/usbtest.c b/drivers/usb/misc/usbtest.c index c7f82310e73e..98ada1a3425c 100644 --- a/drivers/usb/misc/usbtest.c +++ b/drivers/usb/misc/usbtest.c @@ -347,6 +347,14 @@ static unsigned get_maxpacket(struct usb_device *udev, int pipe) return le16_to_cpup(&ep->desc.wMaxPacketSize); } +static int ss_isoc_get_packet_num(struct usb_device *udev, int pipe) +{ + struct usb_host_endpoint *ep = usb_pipe_endpoint(udev, pipe); + + return USB_SS_MULT(ep->ss_ep_comp.bmAttributes) + * (1 + ep->ss_ep_comp.bMaxBurst); +} + static void simple_fill_buf(struct urb *urb) { unsigned i; @@ -1976,8 +1984,13 @@ static struct urb *iso_alloc_urb( if (bytes < 0 || !desc) return NULL; + maxp = usb_endpoint_maxp(desc); - maxp *= usb_endpoint_maxp_mult(desc); + if (udev->speed >= USB_SPEED_SUPER) + maxp *= ss_isoc_get_packet_num(udev, pipe); + else + maxp *= usb_endpoint_maxp_mult(desc); + packets = DIV_ROUND_UP(bytes, maxp); urb = usb_alloc_urb(packets, GFP_KERNEL); @@ -2065,17 +2078,24 @@ test_queue(struct usbtest_dev *dev, struct usbtest_param_32 *param, packets *= param->iterations; if (context.is_iso) { + int transaction_num; + + if (udev->speed >= USB_SPEED_SUPER) + transaction_num = ss_isoc_get_packet_num(udev, pipe); + else + transaction_num = usb_endpoint_maxp_mult(desc); + dev_info(&dev->intf->dev, "iso period %d %sframes, wMaxPacket %d, transactions: %d\n", 1 << (desc->bInterval - 1), - (udev->speed == USB_SPEED_HIGH) ? "micro" : "", + (udev->speed >= USB_SPEED_HIGH) ? "micro" : "", usb_endpoint_maxp(desc), - usb_endpoint_maxp_mult(desc)); + transaction_num); dev_info(&dev->intf->dev, "total %lu msec (%lu packets)\n", (packets * (1 << (desc->bInterval - 1))) - / ((udev->speed == USB_SPEED_HIGH) ? 8 : 1), + / ((udev->speed >= USB_SPEED_HIGH) ? 8 : 1), packets); } -- cgit From 5895d311d28f2605e2f71c1a3e043ed38f3ac9d2 Mon Sep 17 00:00:00 2001 From: Sven Van Asbroeck Date: Mon, 11 Feb 2019 10:04:26 -0500 Subject: usb: phy: twl6030-usb: fix possible use-after-free on remove In remove(), use cancel_delayed_work_sync() to cancel the delayed work. Otherwise there's a chance that this work will continue to run until after the device has been removed. This issue was detected with the help of Coccinelle. Cc: Tony Lindgren Cc: Bin Liu Fixes: b6a619a883c3 ("usb: phy: Check initial state for twl6030") Signed-off-by: Sven Van Asbroeck Signed-off-by: Felipe Balbi --- drivers/usb/phy/phy-twl6030-usb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/phy/phy-twl6030-usb.c b/drivers/usb/phy/phy-twl6030-usb.c index 183550b63faa..dade34d70419 100644 --- a/drivers/usb/phy/phy-twl6030-usb.c +++ b/drivers/usb/phy/phy-twl6030-usb.c @@ -400,7 +400,7 @@ static int twl6030_usb_remove(struct platform_device *pdev) { struct twl6030_usb *twl = platform_get_drvdata(pdev); - cancel_delayed_work(&twl->get_status_work); + cancel_delayed_work_sync(&twl->get_status_work); twl6030_interrupt_mask(TWL6030_USBOTG_INT_MASK, REG_INT_MSK_LINE_C); twl6030_interrupt_mask(TWL6030_USBOTG_INT_MASK, -- cgit From d2fce701751f288bbcb9e64b2ee0535204329334 Mon Sep 17 00:00:00 2001 From: "Gustavo A. R. Silva" Date: Tue, 12 Feb 2019 13:23:57 -0600 Subject: USB: musb: mark expected switch fall-through MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit In preparation to enabling -Wimplicit-fallthrough, mark switch cases where we are expecting to fall through. This patch fixes the following warning: drivers/usb/musb/musb_host.c: In function ‘musb_advance_schedule’: drivers/usb/musb/musb_host.c:374:7: warning: this statement may fall through [-Wimplicit-fallthrough=] if (qh->mux == 1) { ^ drivers/usb/musb/musb_host.c:383:3: note: here case USB_ENDPOINT_XFER_ISOC: ^~~~ Warning level 3 was used: -Wimplicit-fallthrough=3 Notice that, in this particular case, the code comment is modified in accordance with what GCC is expecting to find. This patch is part of the ongoing efforts to enable -Wimplicit-fallthrough. Signed-off-by: Gustavo A. R. Silva Acked-by: Bin Liu Signed-off-by: Greg Kroah-Hartman --- drivers/usb/musb/musb_host.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c index 0b1eb15b6b08..eb308ec35c66 100644 --- a/drivers/usb/musb/musb_host.c +++ b/drivers/usb/musb/musb_host.c @@ -378,7 +378,7 @@ static void musb_advance_schedule(struct musb *musb, struct urb *urb, qh = first_qh(head); break; } - /* else: fall through */ + /* fall through */ case USB_ENDPOINT_XFER_ISOC: case USB_ENDPOINT_XFER_INT: -- cgit From c17c7cf147ac56312156eaaaf8b2e19c9a59a71a Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Tue, 12 Feb 2019 07:58:17 -0800 Subject: usb: typec: tcpm: Remove unused functions tcpm_update_source_capabilities() and tcpm_update_sink_capabilities() are not used anywhere, and I don't recall why I introduced those functions in the first place. Effectively that means that we don't know if they even work, or ever did. Lets remove them. Reported-by: Kyle Tso Signed-off-by: Guenter Roeck Acked-by: Kyle Tso Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/tcpm/tcpm.c | 60 ------------------------------------------- 1 file changed, 60 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c index 8f2af348bda5..0f62db091d8d 100644 --- a/drivers/usb/typec/tcpm/tcpm.c +++ b/drivers/usb/typec/tcpm/tcpm.c @@ -4435,66 +4435,6 @@ sink: return 0; } -int tcpm_update_source_capabilities(struct tcpm_port *port, const u32 *pdo, - unsigned int nr_pdo) -{ - if (tcpm_validate_caps(port, pdo, nr_pdo)) - return -EINVAL; - - mutex_lock(&port->lock); - port->nr_src_pdo = tcpm_copy_pdos(port->src_pdo, pdo, nr_pdo); - switch (port->state) { - case SRC_UNATTACHED: - case SRC_ATTACH_WAIT: - case SRC_TRYWAIT: - tcpm_set_cc(port, tcpm_rp_cc(port)); - break; - case SRC_SEND_CAPABILITIES: - case SRC_NEGOTIATE_CAPABILITIES: - case SRC_READY: - case SRC_WAIT_NEW_CAPABILITIES: - tcpm_set_cc(port, tcpm_rp_cc(port)); - tcpm_set_state(port, SRC_SEND_CAPABILITIES, 0); - break; - default: - break; - } - mutex_unlock(&port->lock); - return 0; -} -EXPORT_SYMBOL_GPL(tcpm_update_source_capabilities); - -int tcpm_update_sink_capabilities(struct tcpm_port *port, const u32 *pdo, - unsigned int nr_pdo, - unsigned int operating_snk_mw) -{ - if (tcpm_validate_caps(port, pdo, nr_pdo)) - return -EINVAL; - - mutex_lock(&port->lock); - port->nr_snk_pdo = tcpm_copy_pdos(port->snk_pdo, pdo, nr_pdo); - port->operating_snk_mw = operating_snk_mw; - port->update_sink_caps = true; - - switch (port->state) { - case SNK_NEGOTIATE_CAPABILITIES: - case SNK_NEGOTIATE_PPS_CAPABILITIES: - case SNK_READY: - case SNK_TRANSITION_SINK: - case SNK_TRANSITION_SINK_VBUS: - if (port->pps_data.active) - tcpm_set_state(port, SNK_NEGOTIATE_PPS_CAPABILITIES, 0); - else - tcpm_set_state(port, SNK_NEGOTIATE_CAPABILITIES, 0); - break; - default: - break; - } - mutex_unlock(&port->lock); - return 0; -} -EXPORT_SYMBOL_GPL(tcpm_update_sink_capabilities); - /* Power Supply access to expose source power information */ enum tcpm_psy_online_states { TCPM_PSY_OFFLINE = 0, -- cgit From a043ad87a78f9cfb5ccd80f448e4e76b50546ad2 Mon Sep 17 00:00:00 2001 From: Heikki Krogerus Date: Wed, 13 Feb 2019 19:36:55 +0300 Subject: usb: typec: tps6598x: Check mode of operation To prevent loading of the driver when the PD controller is still in some operational mode that the driver does not support, checking the mode in driver probe callback function. TI PD controllers may be in undefined mode of operation for example when the application code (firmware) is completely missing. Signed-off-by: Heikki Krogerus Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/tps6598x.c | 53 ++++++++++++++++++++++++++++++++++++++++---- 1 file changed, 49 insertions(+), 4 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/typec/tps6598x.c b/drivers/usb/typec/tps6598x.c index 1c0033ad8738..9947c87d2a1e 100644 --- a/drivers/usb/typec/tps6598x.c +++ b/drivers/usb/typec/tps6598x.c @@ -14,6 +14,8 @@ #include /* Register offsets */ +#define TPS_REG_VID 0x00 +#define TPS_REG_MODE 0x03 #define TPS_REG_CMD1 0x08 #define TPS_REG_DATA1 0x09 #define TPS_REG_INT_EVENT1 0x14 @@ -66,6 +68,20 @@ struct tps6598x_rx_identity_reg { #define TPS_TASK_TIMEOUT 1 #define TPS_TASK_REJECTED 3 +enum { + TPS_MODE_APP, + TPS_MODE_BOOT, + TPS_MODE_BIST, + TPS_MODE_DISC, +}; + +static const char *const modes[] = { + [TPS_MODE_APP] = "APP ", + [TPS_MODE_BOOT] = "BOOT", + [TPS_MODE_BIST] = "BIST", + [TPS_MODE_DISC] = "DISC", +}; + /* Unrecognized commands will be replaced with "!CMD" */ #define INVALID_CMD(_cmd_) (_cmd_ == 0x444d4321) @@ -384,6 +400,32 @@ err_unlock: return IRQ_HANDLED; } +static int tps6598x_check_mode(struct tps6598x *tps) +{ + char mode[5] = { }; + int ret; + + ret = tps6598x_read32(tps, TPS_REG_MODE, (void *)mode); + if (ret) + return ret; + + switch (match_string(modes, ARRAY_SIZE(modes), mode)) { + case TPS_MODE_APP: + return 0; + case TPS_MODE_BOOT: + dev_warn(tps->dev, "dead-battery condition\n"); + return 0; + case TPS_MODE_BIST: + case TPS_MODE_DISC: + default: + dev_err(tps->dev, "controller in unsupported mode \"%s\"\n", + mode); + break; + } + + return -ENODEV; +} + static const struct regmap_config tps6598x_regmap_config = { .reg_bits = 8, .val_bits = 8, @@ -409,10 +451,8 @@ static int tps6598x_probe(struct i2c_client *client) if (IS_ERR(tps->regmap)) return PTR_ERR(tps->regmap); - ret = tps6598x_read32(tps, 0, &vid); - if (ret < 0) - return ret; - if (!vid) + ret = tps6598x_read32(tps, TPS_REG_VID, &vid); + if (ret < 0 || !vid) return -ENODEV; /* @@ -425,6 +465,11 @@ static int tps6598x_probe(struct i2c_client *client) if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) tps->i2c_protocol = true; + /* Make sure the controller has application firmware running */ + ret = tps6598x_check_mode(tps); + if (ret) + return ret; + ret = tps6598x_read32(tps, TPS_REG_STATUS, &status); if (ret < 0) return ret; -- cgit From 540bfab7fbff6ab9092bb28aaf804af0b4d576ae Mon Sep 17 00:00:00 2001 From: Heikki Krogerus Date: Wed, 13 Feb 2019 10:45:50 +0300 Subject: usb: typec: Rationalize the API for the muxes Since with accessory modes there is no need for additional identification when requesting a handle to the mux, we can replace the second parameter that is passed to the typec_mux_get() function with a pointer to alternate mode description structure, and simply passing NULL with accessory modes. This change means the naming of the mux device connections can be updated. Alternate and Accessory Modes will both be handled with muxes named "mode-switch", and the orientation switches will be named "orientation-switch". Future identification of the alternate modes will be later done using device property "svid" of the mux. Reviewed-by: Hans de Goede Reviewed-by: Andy Shevchenko Reviewed-by: Jun Li Signed-off-by: Heikki Krogerus Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/class.c | 7 ++----- drivers/usb/typec/mux.c | 10 ++++++---- 2 files changed, 8 insertions(+), 9 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/typec/class.c b/drivers/usb/typec/class.c index 41c0d790a50f..45abe2c7e9f3 100644 --- a/drivers/usb/typec/class.c +++ b/drivers/usb/typec/class.c @@ -1496,11 +1496,8 @@ typec_port_register_altmode(struct typec_port *port, { struct typec_altmode *adev; struct typec_mux *mux; - char id[10]; - sprintf(id, "id%04xm%02x", desc->svid, desc->mode); - - mux = typec_mux_get(&port->dev, id); + mux = typec_mux_get(&port->dev, desc); if (IS_ERR(mux)) return ERR_CAST(mux); @@ -1593,7 +1590,7 @@ struct typec_port *typec_register_port(struct device *parent, return ERR_CAST(port->sw); } - port->mux = typec_mux_get(&port->dev, "typec-mux"); + port->mux = typec_mux_get(&port->dev, NULL); if (IS_ERR(port->mux)) { put_device(&port->dev); return ERR_CAST(port->mux); diff --git a/drivers/usb/typec/mux.c b/drivers/usb/typec/mux.c index d990aa510fab..8975f58e1d60 100644 --- a/drivers/usb/typec/mux.c +++ b/drivers/usb/typec/mux.c @@ -48,7 +48,7 @@ struct typec_switch *typec_switch_get(struct device *dev) struct typec_switch *sw; mutex_lock(&switch_lock); - sw = device_connection_find_match(dev, "typec-switch", NULL, + sw = device_connection_find_match(dev, "orientation-switch", NULL, typec_switch_match); if (!IS_ERR_OR_NULL(sw)) { WARN_ON(!try_module_get(sw->dev->driver->owner)); @@ -128,19 +128,21 @@ static void *typec_mux_match(struct device_connection *con, int ep, void *data) /** * typec_mux_get - Find USB Type-C Multiplexer * @dev: The caller device - * @name: Mux identifier + * @desc: Alt Mode description * * Finds a mux linked to the caller. This function is primarily meant for the * Type-C drivers. Returns a reference to the mux on success, NULL if no * matching connection was found, or ERR_PTR(-EPROBE_DEFER) when a connection * was found but the mux has not been enumerated yet. */ -struct typec_mux *typec_mux_get(struct device *dev, const char *name) +struct typec_mux *typec_mux_get(struct device *dev, + const struct typec_altmode_desc *desc) { struct typec_mux *mux; mutex_lock(&mux_lock); - mux = device_connection_find_match(dev, name, NULL, typec_mux_match); + mux = device_connection_find_match(dev, "mode-switch", (void *)desc, + typec_mux_match); if (!IS_ERR_OR_NULL(mux)) { WARN_ON(!try_module_get(mux->dev->driver->owner)); get_device(mux->dev); -- cgit From ec69e9533c4879c81eb7122771792864eb49af35 Mon Sep 17 00:00:00 2001 From: Heikki Krogerus Date: Wed, 13 Feb 2019 10:45:54 +0300 Subject: usb: roles: Find the muxes by also matching against the device node When the connections are defined in firmware, struct device_connection will have the fwnode member pointing to the device node (struct fwnode_handle) of the requested device, and the endpoint will not be used at all in that case. Acked-by: Hans de Goede Reviewed-by: Andy Shevchenko Reviewed-by: Jun Li Tested-by: Jun Li Signed-off-by: Heikki Krogerus Signed-off-by: Greg Kroah-Hartman --- drivers/usb/roles/class.c | 21 ++++++++++++++++++--- 1 file changed, 18 insertions(+), 3 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/roles/class.c b/drivers/usb/roles/class.c index 99116af07f1d..f45d8df5cfb8 100644 --- a/drivers/usb/roles/class.c +++ b/drivers/usb/roles/class.c @@ -8,6 +8,7 @@ */ #include +#include #include #include #include @@ -84,7 +85,12 @@ enum usb_role usb_role_switch_get_role(struct usb_role_switch *sw) } EXPORT_SYMBOL_GPL(usb_role_switch_get_role); -static int __switch_match(struct device *dev, const void *name) +static int switch_fwnode_match(struct device *dev, const void *fwnode) +{ + return dev_fwnode(dev) == fwnode; +} + +static int switch_name_match(struct device *dev, const void *name) { return !strcmp((const char *)name, dev_name(dev)); } @@ -94,8 +100,16 @@ static void *usb_role_switch_match(struct device_connection *con, int ep, { struct device *dev; - dev = class_find_device(role_class, NULL, con->endpoint[ep], - __switch_match); + if (con->fwnode) { + if (!fwnode_property_present(con->fwnode, con->id)) + return NULL; + + dev = class_find_device(role_class, NULL, con->fwnode, + switch_fwnode_match); + } else { + dev = class_find_device(role_class, NULL, con->endpoint[ep], + switch_name_match); + } return dev ? to_role_switch(dev) : ERR_PTR(-EPROBE_DEFER); } @@ -266,6 +280,7 @@ usb_role_switch_register(struct device *parent, sw->get = desc->get; sw->dev.parent = parent; + sw->dev.fwnode = desc->fwnode; sw->dev.class = role_class; sw->dev.type = &usb_role_dev_type; dev_set_name(&sw->dev, "%s-role-switch", dev_name(parent)); -- cgit From 6a0bbcf96b2273f110a14d11a5952527c5921191 Mon Sep 17 00:00:00 2001 From: Heikki Krogerus Date: Wed, 13 Feb 2019 10:45:55 +0300 Subject: usb: typec: Find the ports by also matching against the device node When the connections are defined in firmware, struct device_connection will have the fwnode member pointing to the device node (struct fwnode_handle) of the requested device, and the endpoint will not be used at all in that case. Acked-by: Hans de Goede Reviewed-by: Andy Shevchenko Reviewed-by: Jun Li Signed-off-by: Heikki Krogerus Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/class.c | 24 +++++++++++++++++++++--- 1 file changed, 21 insertions(+), 3 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/typec/class.c b/drivers/usb/typec/class.c index 45abe2c7e9f3..2eb623841847 100644 --- a/drivers/usb/typec/class.c +++ b/drivers/usb/typec/class.c @@ -9,6 +9,7 @@ #include #include #include +#include #include #include "bus.h" @@ -204,15 +205,32 @@ static void typec_altmode_put_partner(struct altmode *altmode) put_device(&adev->dev); } -static int __typec_port_match(struct device *dev, const void *name) +static int typec_port_fwnode_match(struct device *dev, const void *fwnode) +{ + return dev_fwnode(dev) == fwnode; +} + +static int typec_port_name_match(struct device *dev, const void *name) { return !strcmp((const char *)name, dev_name(dev)); } static void *typec_port_match(struct device_connection *con, int ep, void *data) { - return class_find_device(typec_class, NULL, con->endpoint[ep], - __typec_port_match); + struct device *dev; + + /* + * FIXME: Check does the fwnode supports the requested SVID. If it does + * we need to return ERR_PTR(-PROBE_DEFER) when there is no device. + */ + if (con->fwnode) + return class_find_device(typec_class, NULL, con->fwnode, + typec_port_fwnode_match); + + dev = class_find_device(typec_class, NULL, con->endpoint[ep], + typec_port_name_match); + + return dev ? dev : ERR_PTR(-EPROBE_DEFER); } struct typec_altmode * -- cgit From 96a6d031ca9930938bd66d0052fc7ed2b56e3583 Mon Sep 17 00:00:00 2001 From: Heikki Krogerus Date: Wed, 13 Feb 2019 10:45:53 +0300 Subject: usb: typec: mux: Find the muxes by also matching against the device node When the connections are defined in firmware, struct device_connection will have the fwnode member pointing to the device node (struct fwnode_handle) of the requested device, and the endpoint will not be used at all in that case. Acked-by: Hans de Goede Reviewed-by: Andy Shevchenko Reviewed-by: Jun Li Signed-off-by: Heikki Krogerus Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/mux.c | 86 ++++++++++++++++++++++++++++++++++++++++++------- 1 file changed, 74 insertions(+), 12 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/typec/mux.c b/drivers/usb/typec/mux.c index 8975f58e1d60..a5947d98824d 100644 --- a/drivers/usb/typec/mux.c +++ b/drivers/usb/typec/mux.c @@ -11,6 +11,8 @@ #include #include #include +#include +#include #include static DEFINE_MUTEX(switch_lock); @@ -23,15 +25,25 @@ static void *typec_switch_match(struct device_connection *con, int ep, { struct typec_switch *sw; - list_for_each_entry(sw, &switch_list, entry) - if (!strcmp(con->endpoint[ep], dev_name(sw->dev))) - return sw; + if (!con->fwnode) { + list_for_each_entry(sw, &switch_list, entry) + if (!strcmp(con->endpoint[ep], dev_name(sw->dev))) + return sw; + return ERR_PTR(-EPROBE_DEFER); + } /* - * We only get called if a connection was found, tell the caller to - * wait for the switch to show up. + * With OF graph the mux node must have a boolean device property named + * "orientation-switch". */ - return ERR_PTR(-EPROBE_DEFER); + if (con->id && !fwnode_property_present(con->fwnode, con->id)) + return NULL; + + list_for_each_entry(sw, &switch_list, entry) + if (dev_fwnode(sw->dev) == con->fwnode) + return sw; + + return con->id ? ERR_PTR(-EPROBE_DEFER) : NULL; } /** @@ -112,17 +124,67 @@ EXPORT_SYMBOL_GPL(typec_switch_unregister); static void *typec_mux_match(struct device_connection *con, int ep, void *data) { + const struct typec_altmode_desc *desc = data; struct typec_mux *mux; + size_t nval; + bool match; + u16 *val; + int i; - list_for_each_entry(mux, &mux_list, entry) - if (!strcmp(con->endpoint[ep], dev_name(mux->dev))) - return mux; + if (!con->fwnode) { + list_for_each_entry(mux, &mux_list, entry) + if (!strcmp(con->endpoint[ep], dev_name(mux->dev))) + return mux; + return ERR_PTR(-EPROBE_DEFER); + } /* - * We only get called if a connection was found, tell the caller to - * wait for the switch to show up. + * Check has the identifier already been "consumed". If it + * has, no need to do any extra connection identification. */ - return ERR_PTR(-EPROBE_DEFER); + match = !con->id; + if (match) + goto find_mux; + + /* Accessory Mode muxes */ + if (!desc) { + match = fwnode_property_present(con->fwnode, "accessory"); + if (match) + goto find_mux; + return NULL; + } + + /* Alternate Mode muxes */ + nval = fwnode_property_read_u16_array(con->fwnode, "svid", NULL, 0); + if (nval <= 0) + return NULL; + + val = kcalloc(nval, sizeof(*val), GFP_KERNEL); + if (!val) + return ERR_PTR(-ENOMEM); + + nval = fwnode_property_read_u16_array(con->fwnode, "svid", val, nval); + if (nval < 0) { + kfree(val); + return ERR_PTR(nval); + } + + for (i = 0; i < nval; i++) { + match = val[i] == desc->svid; + if (match) { + kfree(val); + goto find_mux; + } + } + kfree(val); + return NULL; + +find_mux: + list_for_each_entry(mux, &mux_list, entry) + if (dev_fwnode(mux->dev) == con->fwnode) + return mux; + + return match ? ERR_PTR(-EPROBE_DEFER) : NULL; } /** -- cgit From 8d7fa3d4ea3f0ca69554215e87411494e6346fdc Mon Sep 17 00:00:00 2001 From: Mans Rullgard Date: Thu, 14 Feb 2019 19:45:33 +0000 Subject: USB: serial: ftdi_sio: add ID for Hjelmslund Electronics USB485 This adds the USB ID of the Hjelmslund Electronics USB485 Iso stick. Signed-off-by: Mans Rullgard Cc: stable Signed-off-by: Johan Hovold --- drivers/usb/serial/ftdi_sio.c | 2 ++ drivers/usb/serial/ftdi_sio_ids.h | 6 ++++++ 2 files changed, 8 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c index 77ef4c481f3c..8f5b17471759 100644 --- a/drivers/usb/serial/ftdi_sio.c +++ b/drivers/usb/serial/ftdi_sio.c @@ -1025,6 +1025,8 @@ static const struct usb_device_id id_table_combined[] = { { USB_DEVICE(CYPRESS_VID, CYPRESS_WICED_BT_USB_PID) }, { USB_DEVICE(CYPRESS_VID, CYPRESS_WICED_WL_USB_PID) }, { USB_DEVICE(AIRBUS_DS_VID, AIRBUS_DS_P8GR) }, + /* EZPrototypes devices */ + { USB_DEVICE(EZPROTOTYPES_VID, HJELMSLUND_USB485_ISO_PID) }, { } /* Terminating entry */ }; diff --git a/drivers/usb/serial/ftdi_sio_ids.h b/drivers/usb/serial/ftdi_sio_ids.h index 975d02666c5a..b863bedb55a1 100644 --- a/drivers/usb/serial/ftdi_sio_ids.h +++ b/drivers/usb/serial/ftdi_sio_ids.h @@ -1308,6 +1308,12 @@ #define IONICS_VID 0x1c0c #define IONICS_PLUGCOMPUTER_PID 0x0102 +/* + * EZPrototypes (PID reseller) + */ +#define EZPROTOTYPES_VID 0x1c40 +#define HJELMSLUND_USB485_ISO_PID 0x0477 + /* * Dresden Elektronik Sensor Terminal Board */ -- cgit From 4e46f271c37415323f2b650d02ef50c87ff8d092 Mon Sep 17 00:00:00 2001 From: YueHaibing Date: Tue, 19 Feb 2019 14:57:50 +0800 Subject: usb: typec: mux: Fix unsigned comparison with less than zero The return from the call to fwnode_property_read_u16_array is int, it can be a negative error code however this is being assigned to an size_t variable 'nval', hence the check is always false. Fix this by making 'nval' an int. Detected by Coccinelle ("Unsigned expression compared with zero: nval < 0") Fixes: 96a6d031ca99 ("usb: typec: mux: Find the muxes by also matching against the device node") Signed-off-by: YueHaibing Acked-by: Heikki Krogerus Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/mux.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/typec/mux.c b/drivers/usb/typec/mux.c index a5947d98824d..54d74978df9c 100644 --- a/drivers/usb/typec/mux.c +++ b/drivers/usb/typec/mux.c @@ -126,7 +126,7 @@ static void *typec_mux_match(struct device_connection *con, int ep, void *data) { const struct typec_altmode_desc *desc = data; struct typec_mux *mux; - size_t nval; + int nval; bool match; u16 *val; int i; -- cgit From eeca7606dd6e2445f505903f235e908eb7b78dfc Mon Sep 17 00:00:00 2001 From: "Gustavo A. R. Silva" Date: Mon, 18 Feb 2019 12:59:37 -0600 Subject: usb: dwc2: use struct_size() in kzalloc() One of the more common cases of allocation size calculations is finding the size of a structure that has a zero-sized array at the end, along with memory for some number of elements for that array. For example: struct foo { int stuff; struct boo entry[]; }; size = sizeof(struct foo) + count * sizeof(struct boo); instance = kzalloc(size, GFP_KERNEL); Instead of leaving these open-coded and prone to type mistakes, we can now use the new struct_size() helper: instance = kzalloc(struct_size(instance, entry, count), GFP_KERNEL); Notice that, in this case, variable size is not necessary, hence it is removed. This code was detected with the help of Coccinelle. Signed-off-by: Gustavo A. R. Silva Signed-off-by: Greg Kroah-Hartman --- drivers/usb/dwc2/hcd.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c index dd82fa516f3f..3f087962f498 100644 --- a/drivers/usb/dwc2/hcd.c +++ b/drivers/usb/dwc2/hcd.c @@ -3981,10 +3981,8 @@ static struct dwc2_hcd_urb *dwc2_hcd_urb_alloc(struct dwc2_hsotg *hsotg, gfp_t mem_flags) { struct dwc2_hcd_urb *urb; - u32 size = sizeof(*urb) + iso_desc_count * - sizeof(struct dwc2_hcd_iso_packet_desc); - urb = kzalloc(size, mem_flags); + urb = kzalloc(struct_size(urb, iso_descs, iso_desc_count), mem_flags); if (urb) urb->packet_count = iso_desc_count; return urb; -- cgit From 5ebf5c890324ffa5eaca579dac6913f3e29a28e3 Mon Sep 17 00:00:00 2001 From: "Gustavo A. R. Silva" Date: Mon, 18 Feb 2019 13:06:41 -0600 Subject: usb: core: config: Use struct_size() in kzalloc() One of the more common cases of allocation size calculations is finding the size of a structure that has a zero-sized array at the end, along with memory for some number of elements for that array. For example: struct foo { int stuff; struct boo entry[]; }; size = sizeof(struct foo) + count * sizeof(struct boo); instance = kzalloc(size, GFP_KERNEL); Instead of leaving these open-coded and prone to type mistakes, we can now use the new struct_size() helper: instance = kzalloc(struct_size(instance, entry, count), GFP_KERNEL); Notice that, in this case, variable len is not necessary, hence it is removed. This code was detected with the help of Coccinelle. Signed-off-by: Gustavo A. R. Silva Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/config.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/core/config.c b/drivers/usb/core/config.c index 7bb6b1bd06c8..20ff036b4c22 100644 --- a/drivers/usb/core/config.c +++ b/drivers/usb/core/config.c @@ -552,7 +552,7 @@ static int usb_parse_configuration(struct usb_device *dev, int cfgidx, unsigned char *buffer2; int size2; struct usb_descriptor_header *header; - int len, retval; + int retval; u8 inums[USB_MAXINTERFACES], nalts[USB_MAXINTERFACES]; unsigned iad_num = 0; @@ -707,8 +707,8 @@ static int usb_parse_configuration(struct usb_device *dev, int cfgidx, nalts[i] = j = USB_MAXALTSETTING; } - len = sizeof(*intfc) + sizeof(struct usb_host_interface) * j; - config->intf_cache[i] = intfc = kzalloc(len, GFP_KERNEL); + intfc = kzalloc(struct_size(intfc, altsetting, j), GFP_KERNEL); + config->intf_cache[i] = intfc; if (!intfc) return -ENOMEM; kref_init(&intfc->ref); -- cgit From 01bdf01c7ba8cfdbe205c664f0fd6f9b6f586195 Mon Sep 17 00:00:00 2001 From: "Gustavo A. R. Silva" Date: Mon, 18 Feb 2019 14:21:53 -0600 Subject: usb: wusbcore: wa-xfer: use struct_size() helper Make use of the struct_size() helper instead of an open-coded version in order to avoid any potential type mistakes, in particular in the context in which this code is being used. So, change the following form: sizeof(*packet_desc) + (sizeof(packet_desc->PacketLength[0]) * seg->isoc_frame_count) to : struct_size(packet_status, PacketStatus, seg->isoc_frame_count); This code was detected with the help of Coccinelle. Signed-off-by: Gustavo A. R. Silva Signed-off-by: Greg Kroah-Hartman --- drivers/usb/wusbcore/wa-xfer.c | 15 +++++++-------- 1 file changed, 7 insertions(+), 8 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/wusbcore/wa-xfer.c b/drivers/usb/wusbcore/wa-xfer.c index 01f2f21830c0..abf88cea37bb 100644 --- a/drivers/usb/wusbcore/wa-xfer.c +++ b/drivers/usb/wusbcore/wa-xfer.c @@ -662,9 +662,9 @@ static void __wa_setup_isoc_packet_descr( /* populate isoc packet descriptor. */ packet_desc->bPacketType = WA_XFER_ISO_PACKET_INFO; - packet_desc->wLength = cpu_to_le16(sizeof(*packet_desc) + - (sizeof(packet_desc->PacketLength[0]) * - seg->isoc_frame_count)); + packet_desc->wLength = cpu_to_le16(struct_size(packet_desc, + PacketLength, + seg->isoc_frame_count)); for (frame_index = 0; frame_index < seg->isoc_frame_count; ++frame_index) { int offset_index = frame_index + seg->isoc_frame_offset; @@ -2438,7 +2438,7 @@ static int wa_process_iso_packet_status(struct wahc *wa, struct urb *urb) struct wa_rpipe *rpipe; unsigned done = 0, dti_busy = 0, data_frame_count = 0, seg_index; unsigned first_frame_index = 0, rpipe_ready = 0; - int expected_size; + size_t expected_size; /* We have a xfer result buffer; check it */ dev_dbg(dev, "DTI: isoc packet status %d bytes at %p\n", @@ -2460,11 +2460,10 @@ static int wa_process_iso_packet_status(struct wahc *wa, struct urb *urb) goto error_bad_seg; seg = xfer->seg[wa->dti_isoc_xfer_seg]; rpipe = xfer->ep->hcpriv; - expected_size = sizeof(*packet_status) + - (sizeof(packet_status->PacketStatus[0]) * - seg->isoc_frame_count); + expected_size = struct_size(packet_status, PacketStatus, + seg->isoc_frame_count); if (urb->actual_length != expected_size) { - dev_err(dev, "DTI Error: isoc packet status--bad urb length (%d bytes vs %d needed)\n", + dev_err(dev, "DTI Error: isoc packet status--bad urb length (%d bytes vs %zu needed)\n", urb->actual_length, expected_size); goto error_bad_seg; } -- cgit From d651b44244bbb051245de64b56b8b546118e9aa4 Mon Sep 17 00:00:00 2001 From: Colin Ian King Date: Sun, 17 Feb 2019 22:44:18 +0000 Subject: USB: renesas_usbhs: fix spelling mistake "doens't" -> "doesn't" There is a spelling mistake in a dev_err message. Fix it. Signed-off-by: Colin Ian King Acked-by: Yoshihiro Shimoda Signed-off-by: Greg Kroah-Hartman --- drivers/usb/renesas_usbhs/mod_host.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/renesas_usbhs/mod_host.c b/drivers/usb/renesas_usbhs/mod_host.c index 4e59c649db81..ddd3be48f948 100644 --- a/drivers/usb/renesas_usbhs/mod_host.c +++ b/drivers/usb/renesas_usbhs/mod_host.c @@ -340,7 +340,7 @@ static void usbhsh_pipe_detach(struct usbhsh_hpriv *hpriv, pipe = usbhsh_uep_to_pipe(uep); if (unlikely(!pipe)) { - dev_err(dev, "uep doens't have pipe\n"); + dev_err(dev, "uep doesn't have pipe\n"); } else if (1 == uep->counter--) { /* last user */ struct usb_host_endpoint *ep = usbhsh_uep_to_ep(uep); struct usbhsh_device *udev = usbhsh_uep_to_udev(uep); -- cgit From 8e9fd85c59fb22f4dfa55d2d155401aa935d6ab4 Mon Sep 17 00:00:00 2001 From: YueHaibing Date: Fri, 15 Feb 2019 12:35:13 +0000 Subject: usb: host: oxu210hp-hcd: remove set but not used variables 'uframes, transfer_buffer_length' Fixes gcc '-Wunused-but-set-variable' warning: drivers/usb/host/oxu210hp-hcd.c: In function 'scan_periodic': drivers/usb/host/oxu210hp-hcd.c:2256:13: warning: variable 'uframes' set but not used [-Wunused-but-set-variable] drivers/usb/host/oxu210hp-hcd.c: In function 'oxu_urb_enqueue': drivers/usb/host/oxu210hp-hcd.c:2835:6: warning: variable 'transfer_buffer_length' set but not used [-Wunused-but-set-variable] They are never used since introduction. Signed-off-by: YueHaibing Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/oxu210hp-hcd.c | 8 +------- 1 file changed, 1 insertion(+), 7 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/host/oxu210hp-hcd.c b/drivers/usb/host/oxu210hp-hcd.c index f06a291f05f8..47c5515a9ce4 100644 --- a/drivers/usb/host/oxu210hp-hcd.c +++ b/drivers/usb/host/oxu210hp-hcd.c @@ -2253,16 +2253,12 @@ static void scan_periodic(struct oxu_hcd *oxu) for (;;) { union ehci_shadow q, *q_p; __le32 type, *hw_p; - unsigned uframes; /* don't scan past the live uframe */ frame = now_uframe >> 3; - if (frame == (clock >> 3)) - uframes = now_uframe & 0x07; - else { + if (frame != (clock >> 3)) { /* safe to scan the whole frame at once */ now_uframe |= 0x07; - uframes = 8; } restart: @@ -2832,7 +2828,6 @@ static int oxu_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, { struct oxu_hcd *oxu = hcd_to_oxu(hcd); int num, rem; - int transfer_buffer_length; void *transfer_buffer; struct urb *murb; int i, ret; @@ -2843,7 +2838,6 @@ static int oxu_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, /* Otherwise we should verify the USB transfer buffer size! */ transfer_buffer = urb->transfer_buffer; - transfer_buffer_length = urb->transfer_buffer_length; num = urb->transfer_buffer_length / 4096; rem = urb->transfer_buffer_length % 4096; -- cgit From 0742a338f5b3446a26de551ad8273fb41b2787f2 Mon Sep 17 00:00:00 2001 From: YueHaibing Date: Mon, 18 Feb 2019 22:34:51 +0800 Subject: cdc-wdm: pass return value of recover_from_urb_loss 'rv' is the correct return value, pass it upstream instead of 0 Fixes: 17d80d562fd7 ("USB: autosuspend for cdc-wdm") Signed-off-by: YueHaibing Signed-off-by: Greg Kroah-Hartman --- drivers/usb/class/cdc-wdm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c index bec581fb7c63..9e9caff905d5 100644 --- a/drivers/usb/class/cdc-wdm.c +++ b/drivers/usb/class/cdc-wdm.c @@ -1099,7 +1099,7 @@ static int wdm_post_reset(struct usb_interface *intf) rv = recover_from_urb_loss(desc); mutex_unlock(&desc->wlock); mutex_unlock(&desc->rlock); - return 0; + return rv; } static struct usb_driver wdm_driver = { -- cgit From 98bba546e82d7785b9560c6b141b73ac8d3d820f Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Mon, 18 Feb 2019 15:26:31 +0200 Subject: usb: dwc3: drd: Defer probe if extcon device is not found In case the "linux,extcon-name" property is defined but device itself is not ready, defer the probe. Signed-off-by: Andy Shevchenko Acked-by: Felipe Balbi Signed-off-by: Greg Kroah-Hartman --- drivers/usb/dwc3/drd.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/drd.c b/drivers/usb/dwc3/drd.c index 869725d15c74..726100d1ac0d 100644 --- a/drivers/usb/dwc3/drd.c +++ b/drivers/usb/dwc3/drd.c @@ -457,8 +457,13 @@ static struct extcon_dev *dwc3_get_extcon(struct dwc3 *dwc) * This device property is for kernel internal use only and * is expected to be set by the glue code. */ - if (device_property_read_string(dev, "linux,extcon-name", &name) == 0) - return extcon_get_extcon_dev(name); + if (device_property_read_string(dev, "linux,extcon-name", &name) == 0) { + edev = extcon_get_extcon_dev(name); + if (!edev) + return ERR_PTR(-EPROBE_DEFER); + + return edev; + } np_phy = of_parse_phandle(dev->of_node, "phys", 0); np_conn = of_graph_get_remote_node(np_phy, -1, -1); -- cgit From 7b0b644b9aa2de5032db0f468fddca091d0b7b90 Mon Sep 17 00:00:00 2001 From: Karoly Pados Date: Sun, 17 Feb 2019 18:59:01 +0100 Subject: USB: serial: cp210x: fix GPIO in autosuspend Current GPIO code in cp210x fails to take USB autosuspend into account, making it practically impossible to use GPIOs with autosuspend enabled without user configuration. Fix this like for ftdi_sio in a previous patch. Tested on a CP2102N. Signed-off-by: Karoly Pados Fixes: cf5276ce7867 ("USB: serial: cp210x: Adding GPIO support for CP2105") Cc: stable Signed-off-by: Johan Hovold --- drivers/usb/serial/cp210x.c | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c index fac7a4547523..de076e866661 100644 --- a/drivers/usb/serial/cp210x.c +++ b/drivers/usb/serial/cp210x.c @@ -1370,8 +1370,13 @@ static int cp210x_gpio_get(struct gpio_chip *gc, unsigned int gpio) if (priv->partnum == CP210X_PARTNUM_CP2105) req_type = REQTYPE_INTERFACE_TO_HOST; + result = usb_autopm_get_interface(serial->interface); + if (result) + return result; + result = cp210x_read_vendor_block(serial, req_type, CP210X_READ_LATCH, &buf, sizeof(buf)); + usb_autopm_put_interface(serial->interface); if (result < 0) return result; @@ -1392,6 +1397,10 @@ static void cp210x_gpio_set(struct gpio_chip *gc, unsigned int gpio, int value) buf.mask = BIT(gpio); + result = usb_autopm_get_interface(serial->interface); + if (result) + goto out; + if (priv->partnum == CP210X_PARTNUM_CP2105) { result = cp210x_write_vendor_block(serial, REQTYPE_HOST_TO_INTERFACE, @@ -1409,6 +1418,8 @@ static void cp210x_gpio_set(struct gpio_chip *gc, unsigned int gpio, int value) NULL, 0, USB_CTRL_SET_TIMEOUT); } + usb_autopm_put_interface(serial->interface); +out: if (result < 0) { dev_err(&serial->interface->dev, "failed to set GPIO value: %d\n", result); -- cgit From eb76b37aaf7e6bdd6638bf5b2ef29688645e03b8 Mon Sep 17 00:00:00 2001 From: Colin Ian King Date: Tue, 19 Feb 2019 13:43:33 +0000 Subject: usb: typec: mux: remove redundant check on variable match All the code paths that lead to the return statement are where match is always true, hence the check to see if it is true is redundant and can be removed. Detected by CoverityScan, CID#14769672 ("Logically dead code") Signed-off-by: Colin Ian King Acked-by: Heikki Krogerus Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/mux.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/typec/mux.c b/drivers/usb/typec/mux.c index 54d74978df9c..2ce54f3fc79c 100644 --- a/drivers/usb/typec/mux.c +++ b/drivers/usb/typec/mux.c @@ -184,7 +184,7 @@ find_mux: if (dev_fwnode(mux->dev) == con->fwnode) return mux; - return match ? ERR_PTR(-EPROBE_DEFER) : NULL; + return ERR_PTR(-EPROBE_DEFER); } /** -- cgit From 01fdf179f4b064d4c9d30b39aba178caf32649f4 Mon Sep 17 00:00:00 2001 From: Mans Rullgard Date: Tue, 19 Feb 2019 14:52:26 +0000 Subject: usb: core: skip interfaces disabled in devicetree If an interface has an associated devicetree node with status disabled, do not register the device. This is useful for boards with a built-in multifunction USB device where some functions are broken or otherwise undesired. Signed-off-by: Mans Rullgard Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/message.c | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c index 4f33eb632a88..82239f27c4cc 100644 --- a/drivers/usb/core/message.c +++ b/drivers/usb/core/message.c @@ -2006,6 +2006,13 @@ free_interfaces: for (i = 0; i < nintf; ++i) { struct usb_interface *intf = cp->interface[i]; + if (intf->dev.of_node && + !of_device_is_available(intf->dev.of_node)) { + dev_info(&dev->dev, "skipping disabled interface %d\n", + intf->cur_altsetting->desc.bInterfaceNumber); + continue; + } + dev_dbg(&dev->dev, "adding %s (config #%d, interface %d)\n", dev_name(&intf->dev), configuration, -- cgit From 79595a734a68f768774d3e9ad6b5ad994413c578 Mon Sep 17 00:00:00 2001 From: Keyur Patel Date: Tue, 19 Feb 2019 16:15:50 -0500 Subject: usb: core: Replace hardcoded check with inline function from usb.h Expression (urb->transfer_flags & URB_DIR_MASK) == URB_DIR_IN can be replaced by usb_urb_dir_in(struct urb *urb) from usb.h for better readability. Signed-off-by: Keyur Patel Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/devio.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c index a12f2ce8df90..fa783531ee88 100644 --- a/drivers/usb/core/devio.c +++ b/drivers/usb/core/devio.c @@ -604,7 +604,7 @@ static void async_completed(struct urb *urb) snoop(&urb->dev->dev, "urb complete\n"); snoop_urb(urb->dev, as->userurb, urb->pipe, urb->actual_length, as->status, COMPLETE, NULL, 0); - if ((urb->transfer_flags & URB_DIR_MASK) == URB_DIR_IN) + if (usb_urb_dir_in(urb)) snoop_urb_data(urb, urb->actual_length); if (as->status < 0 && as->bulk_addr && as->status != -ECONNRESET && -- cgit From 6431866b6707d27151be381252d6eef13025cfce Mon Sep 17 00:00:00 2001 From: Daniele Palmas Date: Wed, 20 Feb 2019 11:43:17 +0100 Subject: USB: serial: option: add Telit ME910 ECM composition This patch adds Telit ME910 family ECM composition 0x1102. Signed-off-by: Daniele Palmas Cc: stable Signed-off-by: Johan Hovold --- drivers/usb/serial/option.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c index aef15497ff31..11b21d9410f3 100644 --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -1148,6 +1148,8 @@ static const struct usb_device_id option_ids[] = { .driver_info = NCTRL(0) | RSVD(1) | RSVD(3) }, { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_ME910_DUAL_MODEM), .driver_info = NCTRL(0) | RSVD(3) }, + { USB_DEVICE_INTERFACE_CLASS(TELIT_VENDOR_ID, 0x1102, 0xff), /* Telit ME910 (ECM) */ + .driver_info = NCTRL(0) }, { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_LE910), .driver_info = NCTRL(0) | RSVD(1) | RSVD(2) }, { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_LE910_USBCFG4), -- cgit From 82c5de0ab8dbd6035223ad69e76bd8a88a0a9399 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Tue, 25 Dec 2018 13:29:54 +0100 Subject: dma-mapping: remove the DMA_MEMORY_EXCLUSIVE flag All users of dma_declare_coherent want their allocations to be exclusive, so default to exclusive allocations. Signed-off-by: Christoph Hellwig Reviewed-by: Greg Kroah-Hartman --- drivers/usb/host/ohci-sm501.c | 3 +-- drivers/usb/host/ohci-tmio.c | 2 +- 2 files changed, 2 insertions(+), 3 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/host/ohci-sm501.c b/drivers/usb/host/ohci-sm501.c index c9233cddf9a2..c26228c25f99 100644 --- a/drivers/usb/host/ohci-sm501.c +++ b/drivers/usb/host/ohci-sm501.c @@ -126,8 +126,7 @@ static int ohci_hcd_sm501_drv_probe(struct platform_device *pdev) retval = dma_declare_coherent_memory(dev, mem->start, mem->start - mem->parent->start, - resource_size(mem), - DMA_MEMORY_EXCLUSIVE); + resource_size(mem)); if (retval) { dev_err(dev, "cannot declare coherent memory\n"); goto err1; diff --git a/drivers/usb/host/ohci-tmio.c b/drivers/usb/host/ohci-tmio.c index a631dbb369d7..f88a0370659f 100644 --- a/drivers/usb/host/ohci-tmio.c +++ b/drivers/usb/host/ohci-tmio.c @@ -225,7 +225,7 @@ static int ohci_hcd_tmio_drv_probe(struct platform_device *dev) } ret = dma_declare_coherent_memory(&dev->dev, sram->start, sram->start, - resource_size(sram), DMA_MEMORY_EXCLUSIVE); + resource_size(sram)); if (ret) goto err_dma_declare; -- cgit From 0326ccb5feac6eac35ba6254260e2774277cd976 Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Wed, 20 Feb 2019 14:48:41 +0100 Subject: xhci: tegra: Prevent error pointer dereference During initialization, the host and super-speed power domains will contain an ERR_PTR() encoded error code rather than being NULL. To avoid a crash, use a !IS_ERR_OR_NULL() condition during cleanup. Signed-off-by: Thierry Reding Fixes: 6494a9ad86de ("usb: xhci: tegra: Add genpd support") Cc: stable Reviewed-by: Jon Hunter Acked-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-tegra.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/host/xhci-tegra.c b/drivers/usb/host/xhci-tegra.c index 938ff06c0349..efb0cad8710e 100644 --- a/drivers/usb/host/xhci-tegra.c +++ b/drivers/usb/host/xhci-tegra.c @@ -941,9 +941,9 @@ static void tegra_xusb_powerdomain_remove(struct device *dev, device_link_del(tegra->genpd_dl_ss); if (tegra->genpd_dl_host) device_link_del(tegra->genpd_dl_host); - if (tegra->genpd_dev_ss) + if (!IS_ERR_OR_NULL(tegra->genpd_dev_ss)) dev_pm_domain_detach(tegra->genpd_dev_ss, true); - if (tegra->genpd_dev_host) + if (!IS_ERR_OR_NULL(tegra->genpd_dev_host)) dev_pm_domain_detach(tegra->genpd_dev_host, true); } -- cgit From 58f7691fd7383a904ca86500288e1c5ffd354edc Mon Sep 17 00:00:00 2001 From: Chunfeng Yun Date: Wed, 20 Feb 2019 19:50:54 +0200 Subject: usb: xhci: remove unused member 'parent' in xhci_regset struct The member @parent of xhci_regset struct is not used in fact, so remove it Signed-off-by: Chunfeng Yun Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-debugfs.h | 1 - 1 file changed, 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/host/xhci-debugfs.h b/drivers/usb/host/xhci-debugfs.h index ac5bc40f5c3a..f7a4e2492b00 100644 --- a/drivers/usb/host/xhci-debugfs.h +++ b/drivers/usb/host/xhci-debugfs.h @@ -80,7 +80,6 @@ struct xhci_regset { char name[DEBUGFS_NAMELEN]; struct debugfs_regset32 regset; size_t nregs; - struct dentry *parent; struct list_head list; }; -- cgit From ea5cc92517a709f97e9e413163bcab7b9c54fd55 Mon Sep 17 00:00:00 2001 From: Prabhat Chand Pandey Date: Wed, 20 Feb 2019 19:50:55 +0200 Subject: usb: xhci: dbc: Fixing typo error. Replaced "xhci_dbc_flush_reqests" with xhci_dbc_flush_requests". Signed-off-by: Prabhat Chand Pandey Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-dbgcap.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/host/xhci-dbgcap.c b/drivers/usb/host/xhci-dbgcap.c index 86cff5c28eff..c78be578abb0 100644 --- a/drivers/usb/host/xhci-dbgcap.c +++ b/drivers/usb/host/xhci-dbgcap.c @@ -181,7 +181,7 @@ static void xhci_dbc_flush_endpoint_requests(struct dbc_ep *dep) xhci_dbc_flush_single_request(req); } -static void xhci_dbc_flush_reqests(struct xhci_dbc *dbc) +static void xhci_dbc_flush_requests(struct xhci_dbc *dbc) { xhci_dbc_flush_endpoint_requests(&dbc->eps[BULK_OUT]); xhci_dbc_flush_endpoint_requests(&dbc->eps[BULK_IN]); @@ -687,7 +687,7 @@ static enum evtreturn xhci_dbc_do_handle_events(struct xhci_dbc *dbc) !(portsc & DBC_PORTSC_CONN_STATUS)) { xhci_info(xhci, "DbC cable unplugged\n"); dbc->state = DS_ENABLED; - xhci_dbc_flush_reqests(dbc); + xhci_dbc_flush_requests(dbc); return EVT_DISC; } @@ -697,7 +697,7 @@ static enum evtreturn xhci_dbc_do_handle_events(struct xhci_dbc *dbc) xhci_info(xhci, "DbC port reset\n"); writel(portsc, &dbc->regs->portsc); dbc->state = DS_ENABLED; - xhci_dbc_flush_reqests(dbc); + xhci_dbc_flush_requests(dbc); return EVT_DISC; } -- cgit From 4ee925dfe017870340ab26503799376073e54759 Mon Sep 17 00:00:00 2001 From: Jean-Philippe Menil Date: Wed, 20 Feb 2019 19:50:52 +0200 Subject: usb: xhci: fix build warning - missing prototype Fix build warning when building drivers/usb/host/xhci-mem.o with W=1 due to missing prototype for xhci_free_virt_devices_depth_first. This function is only used in xhci-mem.c so just make it static. Signed-off-by: Jean-Philippe Menil Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-mem.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index 8067f178fa84..cf5e17962179 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -933,7 +933,7 @@ void xhci_free_virt_device(struct xhci_hcd *xhci, int slot_id) * that tt_info, then free the child first. Recursive. * We can't rely on udev at this point to find child-parent relationships. */ -void xhci_free_virt_devices_depth_first(struct xhci_hcd *xhci, int slot_id) +static void xhci_free_virt_devices_depth_first(struct xhci_hcd *xhci, int slot_id) { struct xhci_virt_device *vdev; struct list_head *tt_list_head; -- cgit From 8fde481ef3674ae5ad0dbfef4df18ff507c5675a Mon Sep 17 00:00:00 2001 From: Balaji Manoharan Date: Wed, 20 Feb 2019 19:50:53 +0200 Subject: usb: xhci: Fix for Enabling USB ROLE SWITCH QUIRK on INTEL_SUNRISEPOINT_LP_XHCI This fix enables USB role feature on intel commercial nuc platform which is based on Kabylake chipset. Signed-off-by: Balaji Manoharan Reviewed-by: Hans de Goede Reviewed-by: Heikki Krogerus Signed-off-by: Mathias Nyman Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-pci.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/usb') diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index a9ec7051f286..c2fe218e051f 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -194,6 +194,7 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci) xhci->quirks |= XHCI_SSIC_PORT_UNUSED; if (pdev->vendor == PCI_VENDOR_ID_INTEL && (pdev->device == PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI || + pdev->device == PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_XHCI || pdev->device == PCI_DEVICE_ID_INTEL_APL_XHCI)) xhci->quirks |= XHCI_INTEL_USB_ROLE_SW; if (pdev->vendor == PCI_VENDOR_ID_INTEL && -- cgit From 8a863a608d47fa5d9dd15cf841817f73f804cf91 Mon Sep 17 00:00:00 2001 From: Nikolaus Voss Date: Wed, 20 Feb 2019 16:11:38 +0100 Subject: usb: typec: tps6598x: handle block writes separately with plain-I2C adapters Commit 1a2f474d328f handles block _reads_ separately with plain-I2C adapters, but the problem described with regmap-i2c not handling SMBus block transfers (i.e. read and writes) correctly also exists with writes. As workaround, this patch adds a block write function the same way 1a2f474d328f adds a block read function. Fixes: 1a2f474d328f ("usb: typec: tps6598x: handle block reads separately with plain-I2C adapters") Fixes: 0a4c005bd171 ("usb: typec: driver for TI TPS6598x USB Power Delivery controllers") Signed-off-by: Nikolaus Voss Cc: stable Reviewed-by: Guenter Roeck Acked-by: Heikki Krogerus Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/tps6598x.c | 26 ++++++++++++++++++++------ 1 file changed, 20 insertions(+), 6 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/typec/tps6598x.c b/drivers/usb/typec/tps6598x.c index 9947c87d2a1e..c674abe3cf99 100644 --- a/drivers/usb/typec/tps6598x.c +++ b/drivers/usb/typec/tps6598x.c @@ -126,6 +126,20 @@ tps6598x_block_read(struct tps6598x *tps, u8 reg, void *val, size_t len) return 0; } +static int tps6598x_block_write(struct tps6598x *tps, u8 reg, + void *val, size_t len) +{ + u8 data[TPS_MAX_LEN + 1]; + + if (!tps->i2c_protocol) + return regmap_raw_write(tps->regmap, reg, val, len); + + data[0] = len; + memcpy(&data[1], val, len); + + return regmap_raw_write(tps->regmap, reg, data, sizeof(data)); +} + static inline int tps6598x_read16(struct tps6598x *tps, u8 reg, u16 *val) { return tps6598x_block_read(tps, reg, val, sizeof(u16)); @@ -143,23 +157,23 @@ static inline int tps6598x_read64(struct tps6598x *tps, u8 reg, u64 *val) static inline int tps6598x_write16(struct tps6598x *tps, u8 reg, u16 val) { - return regmap_raw_write(tps->regmap, reg, &val, sizeof(u16)); + return tps6598x_block_write(tps, reg, &val, sizeof(u16)); } static inline int tps6598x_write32(struct tps6598x *tps, u8 reg, u32 val) { - return regmap_raw_write(tps->regmap, reg, &val, sizeof(u32)); + return tps6598x_block_write(tps, reg, &val, sizeof(u32)); } static inline int tps6598x_write64(struct tps6598x *tps, u8 reg, u64 val) { - return regmap_raw_write(tps->regmap, reg, &val, sizeof(u64)); + return tps6598x_block_write(tps, reg, &val, sizeof(u64)); } static inline int tps6598x_write_4cc(struct tps6598x *tps, u8 reg, const char *val) { - return regmap_raw_write(tps->regmap, reg, &val, sizeof(u32)); + return tps6598x_block_write(tps, reg, &val, sizeof(u32)); } static int tps6598x_read_partner_identity(struct tps6598x *tps) @@ -245,8 +259,8 @@ static int tps6598x_exec_cmd(struct tps6598x *tps, const char *cmd, return -EBUSY; if (in_len) { - ret = regmap_raw_write(tps->regmap, TPS_REG_DATA1, - in_data, in_len); + ret = tps6598x_block_write(tps, TPS_REG_DATA1, + in_data, in_len); if (ret) return ret; } -- cgit From 7bae0432a64aa7569dbd0feb2927fd3ff913901f Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Sat, 16 Feb 2019 23:21:51 -0800 Subject: usb: core: add option of only authorizing internal devices On Chrome OS we want to use USBguard to potentially limit access to USB devices based on policy. We however to do not want to wait for userspace to come up before initializing fixed USB devices to not regress our boot times. This patch adds option to instruct the kernel to only authorize devices connected to the internal ports. Previously we could either authorize all or none (or, by default, we'd only authorize wired devices). The behavior is controlled via usbcore.authorized_default command line option. Signed-off-by: Dmitry Torokhov Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/hcd.c | 51 ++++++++++++++++++++++++++++++-------------------- drivers/usb/core/usb.c | 33 +++++++++++++++++++++++++------- 2 files changed, 57 insertions(+), 27 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index 86f39e44f98a..3b6e3e25f59e 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -373,13 +373,19 @@ static const u8 ss_rh_config_descriptor[] = { * -1 is authorized for all devices except wireless (old behaviour) * 0 is unauthorized for all devices * 1 is authorized for all devices + * 2 is authorized for internal devices */ -static int authorized_default = -1; +#define USB_AUTHORIZE_WIRED -1 +#define USB_AUTHORIZE_NONE 0 +#define USB_AUTHORIZE_ALL 1 +#define USB_AUTHORIZE_INTERNAL 2 + +static int authorized_default = USB_AUTHORIZE_WIRED; module_param(authorized_default, int, S_IRUGO|S_IWUSR); MODULE_PARM_DESC(authorized_default, "Default USB device authorization: 0 is not authorized, 1 is " - "authorized, -1 is authorized except for wireless USB (default, " - "old behaviour"); + "authorized, 2 is authorized for internal devices, -1 is " + "authorized except for wireless USB (default, old behaviour"); /*-------------------------------------------------------------------------*/ /** @@ -884,7 +890,7 @@ static ssize_t authorized_default_show(struct device *dev, struct usb_hcd *hcd; hcd = bus_to_hcd(usb_bus); - return snprintf(buf, PAGE_SIZE, "%u\n", !!HCD_DEV_AUTHORIZED(hcd)); + return snprintf(buf, PAGE_SIZE, "%u\n", hcd->dev_policy); } static ssize_t authorized_default_store(struct device *dev, @@ -900,11 +906,8 @@ static ssize_t authorized_default_store(struct device *dev, hcd = bus_to_hcd(usb_bus); result = sscanf(buf, "%u\n", &val); if (result == 1) { - if (val) - set_bit(HCD_FLAG_DEV_AUTHORIZED, &hcd->flags); - else - clear_bit(HCD_FLAG_DEV_AUTHORIZED, &hcd->flags); - + hcd->dev_policy = val <= USB_DEVICE_AUTHORIZE_INTERNAL ? + val : USB_DEVICE_AUTHORIZE_ALL; result = size; } else { result = -EINVAL; @@ -2748,18 +2751,26 @@ int usb_add_hcd(struct usb_hcd *hcd, dev_info(hcd->self.controller, "%s\n", hcd->product_desc); - /* Keep old behaviour if authorized_default is not in [0, 1]. */ - if (authorized_default < 0 || authorized_default > 1) { - if (hcd->wireless) - clear_bit(HCD_FLAG_DEV_AUTHORIZED, &hcd->flags); - else - set_bit(HCD_FLAG_DEV_AUTHORIZED, &hcd->flags); - } else { - if (authorized_default) - set_bit(HCD_FLAG_DEV_AUTHORIZED, &hcd->flags); - else - clear_bit(HCD_FLAG_DEV_AUTHORIZED, &hcd->flags); + switch (authorized_default) { + case USB_AUTHORIZE_NONE: + hcd->dev_policy = USB_DEVICE_AUTHORIZE_NONE; + break; + + case USB_AUTHORIZE_ALL: + hcd->dev_policy = USB_DEVICE_AUTHORIZE_ALL; + break; + + case USB_AUTHORIZE_INTERNAL: + hcd->dev_policy = USB_DEVICE_AUTHORIZE_INTERNAL; + break; + + case USB_AUTHORIZE_WIRED: + default: + hcd->dev_policy = hcd->wireless ? + USB_DEVICE_AUTHORIZE_NONE : USB_DEVICE_AUTHORIZE_ALL; + break; } + set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); /* per default all interfaces are authorized */ diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c index 4ebfbd737905..9b5852e313f5 100644 --- a/drivers/usb/core/usb.c +++ b/drivers/usb/core/usb.c @@ -46,8 +46,7 @@ #include #include -#include "usb.h" - +#include "hub.h" const char *usbcore_name = "usbcore"; @@ -536,6 +535,27 @@ static unsigned usb_bus_is_wusb(struct usb_bus *bus) return hcd->wireless; } +static bool usb_dev_authorized(struct usb_device *dev, struct usb_hcd *hcd) +{ + struct usb_hub *hub; + + if (!dev->parent) + return true; /* Root hub always ok [and always wired] */ + + switch (hcd->dev_policy) { + case USB_DEVICE_AUTHORIZE_NONE: + default: + return false; + + case USB_DEVICE_AUTHORIZE_ALL: + return true; + + case USB_DEVICE_AUTHORIZE_INTERNAL: + hub = usb_hub_to_struct_hub(dev->parent); + return hub->ports[dev->portnum - 1]->connect_type == + USB_PORT_CONNECT_TYPE_HARD_WIRED; + } +} /** * usb_alloc_dev - usb device constructor (usbcore-internal) @@ -663,12 +683,11 @@ struct usb_device *usb_alloc_dev(struct usb_device *parent, dev->connect_time = jiffies; dev->active_duration = -jiffies; #endif - if (root_hub) /* Root hub always ok [and always wired] */ - dev->authorized = 1; - else { - dev->authorized = !!HCD_DEV_AUTHORIZED(usb_hcd); + + dev->authorized = usb_dev_authorized(dev, usb_hcd); + if (!root_hub) dev->wusb = usb_bus_is_wusb(bus) ? 1 : 0; - } + return dev; } EXPORT_SYMBOL_GPL(usb_alloc_dev); -- cgit From 563b9372f7ec57e44e8f9a8600c5107d7ffdd166 Mon Sep 17 00:00:00 2001 From: Dmitry Osipenko Date: Sun, 24 Feb 2019 18:36:22 +0300 Subject: usb: chipidea: tegra: Fix missed ci_hdrc_remove_device() The ChipIdea's platform device need to be unregistered on Tegra's driver module removal. Fixes: dfebb5f43a78827a ("usb: chipidea: Add support for Tegra20/30/114/124") Signed-off-by: Dmitry Osipenko Acked-by: Peter Chen Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/chipidea/ci_hdrc_tegra.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/usb') diff --git a/drivers/usb/chipidea/ci_hdrc_tegra.c b/drivers/usb/chipidea/ci_hdrc_tegra.c index 772851bee99b..12025358bb3c 100644 --- a/drivers/usb/chipidea/ci_hdrc_tegra.c +++ b/drivers/usb/chipidea/ci_hdrc_tegra.c @@ -130,6 +130,7 @@ static int tegra_udc_remove(struct platform_device *pdev) { struct tegra_udc *udc = platform_get_drvdata(pdev); + ci_hdrc_remove_device(udc->dev); usb_phy_set_suspend(udc->phy, 1); clk_disable_unprepare(udc->clk); -- cgit From 3c91b652ec36f1bde3bba5977c23d0e492887176 Mon Sep 17 00:00:00 2001 From: Jun Li Date: Wed, 27 Feb 2019 06:51:29 +0000 Subject: usb: chipidea: imx: remove unused header files Those 2 headers files are not required now. Signed-off-by: Jun Li Signed-off-by: Peter Chen Signed-off-by: Greg Kroah-Hartman --- drivers/usb/chipidea/ci_hdrc_imx.c | 2 -- 1 file changed, 2 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/chipidea/ci_hdrc_imx.c b/drivers/usb/chipidea/ci_hdrc_imx.c index 9b45aa422e69..076d8c05b031 100644 --- a/drivers/usb/chipidea/ci_hdrc_imx.c +++ b/drivers/usb/chipidea/ci_hdrc_imx.c @@ -7,10 +7,8 @@ #include #include -#include #include #include -#include #include #include #include -- cgit From 5f0632c467de88b6696d2f339b782af3e594f3b2 Mon Sep 17 00:00:00 2001 From: Philipp Puschmann Date: Wed, 27 Feb 2019 06:51:34 +0000 Subject: usb: chipidea: imx: set power polarity This patch adds support to set the power line polarity for i.MX SoCs. To let the USB controller control the power it may be necessary to configure the polarity of the power line. So far the polarity was configured by Bootloader or alternatively the power line was muxed as gpio and driven by a regulator. Also make use of of_property_read_bool. Signed-off-by: Philipp Puschmann Signed-off-by: Peter Chen Signed-off-by: Greg Kroah-Hartman --- drivers/usb/chipidea/ci_hdrc_imx.c | 4 ++-- drivers/usb/chipidea/ci_hdrc_imx.h | 1 + drivers/usb/chipidea/usbmisc_imx.c | 7 +++++++ 3 files changed, 10 insertions(+), 2 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/chipidea/ci_hdrc_imx.c b/drivers/usb/chipidea/ci_hdrc_imx.c index 076d8c05b031..ceec8d5985d4 100644 --- a/drivers/usb/chipidea/ci_hdrc_imx.c +++ b/drivers/usb/chipidea/ci_hdrc_imx.c @@ -150,8 +150,8 @@ static struct imx_usbmisc_data *usbmisc_get_init_data(struct device *dev) dev_warn(dev, "No over current polarity defined\n"); } - if (of_find_property(np, "external-vbus-divider", NULL)) - data->evdo = 1; + data->pwr_pol = of_property_read_bool(np, "power-active-high"); + data->evdo = of_property_read_bool(np, "external-vbus-divider"); if (of_usb_get_phy_mode(np) == USBPHY_INTERFACE_MODE_ULPI) data->ulpi = 1; diff --git a/drivers/usb/chipidea/ci_hdrc_imx.h b/drivers/usb/chipidea/ci_hdrc_imx.h index 7cc53e2ce564..c842e03f8767 100644 --- a/drivers/usb/chipidea/ci_hdrc_imx.h +++ b/drivers/usb/chipidea/ci_hdrc_imx.h @@ -18,6 +18,7 @@ struct imx_usbmisc_data { /* true if dt specifies polarity */ unsigned int oc_pol_configured:1; + unsigned int pwr_pol:1; /* power polarity */ unsigned int evdo:1; /* set external vbus divider option */ unsigned int ulpi:1; /* connected to an ULPI phy */ unsigned int hsic:1; /* HSIC controlller */ diff --git a/drivers/usb/chipidea/usbmisc_imx.c b/drivers/usb/chipidea/usbmisc_imx.c index 097ffbca0bd9..d8b67e150b12 100644 --- a/drivers/usb/chipidea/usbmisc_imx.c +++ b/drivers/usb/chipidea/usbmisc_imx.c @@ -63,6 +63,7 @@ #define MX6_BM_NON_BURST_SETTING BIT(1) #define MX6_BM_OVER_CUR_DIS BIT(7) #define MX6_BM_OVER_CUR_POLARITY BIT(8) +#define MX6_BM_PWR_POLARITY BIT(9) #define MX6_BM_WAKEUP_ENABLE BIT(10) #define MX6_BM_UTMI_ON_CLOCK BIT(13) #define MX6_BM_ID_WAKEUP BIT(16) @@ -383,6 +384,9 @@ static int usbmisc_imx6q_init(struct imx_usbmisc_data *data) else if (data->oc_pol_configured) reg &= ~MX6_BM_OVER_CUR_POLARITY; } + /* If the polarity is not set keep it as setup by the bootlader */ + if (data->pwr_pol == 1) + reg |= MX6_BM_PWR_POLARITY; writel(reg, usbmisc->base + data->index * 4); /* SoC non-burst setting */ @@ -585,6 +589,9 @@ static int usbmisc_imx7d_init(struct imx_usbmisc_data *data) else if (data->oc_pol_configured) reg &= ~MX6_BM_OVER_CUR_POLARITY; } + /* If the polarity is not set keep it as setup by the bootlader */ + if (data->pwr_pol == 1) + reg |= MX6_BM_PWR_POLARITY; writel(reg, usbmisc->base); reg = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2); -- cgit From 68ef236274793066b9ba3154b16c0acc1c891e5c Mon Sep 17 00:00:00 2001 From: Paul Kocialkowski Date: Wed, 27 Feb 2019 06:51:36 +0000 Subject: usb: chipidea: Grab the (legacy) USB PHY by phandle first According to the chipidea driver bindings, the USB PHY is specified via the "phys" phandle node. However, this only takes effect for USB PHYs that use the common PHY framework. For legacy USB PHYs, a simple lookup based on the USB PHY type is done instead. This does not play out well when more than one USB PHY is registered, since the first registered PHY matching the type will always be returned regardless of what the driver was bound to. Fix this by looking up the PHY based on the "phys" phandle node. Although generic PHYs are rather matched by their "phys-name" and not the "phys" phandle directly, there is no helper for similar lookup on legacy PHYs and it's probably not worth the effort to add it. When no legacy USB PHY is found by phandle, fallback to grabbing any registered USB2 PHY. This ensures backward compatibility if some users were actually relying on this mechanism. Signed-off-by: Paul Kocialkowski Signed-off-by: Peter Chen Signed-off-by: Greg Kroah-Hartman --- drivers/usb/chipidea/core.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c index 7bfcbb23c2a4..016e4004fe9d 100644 --- a/drivers/usb/chipidea/core.c +++ b/drivers/usb/chipidea/core.c @@ -954,8 +954,15 @@ static int ci_hdrc_probe(struct platform_device *pdev) } else if (ci->platdata->usb_phy) { ci->usb_phy = ci->platdata->usb_phy; } else { + ci->usb_phy = devm_usb_get_phy_by_phandle(dev->parent, "phys", + 0); ci->phy = devm_phy_get(dev->parent, "usb-phy"); - ci->usb_phy = devm_usb_get_phy(dev->parent, USB_PHY_TYPE_USB2); + + /* Fallback to grabbing any registered USB2 PHY */ + if (IS_ERR(ci->usb_phy) && + PTR_ERR(ci->usb_phy) != -EPROBE_DEFER) + ci->usb_phy = devm_usb_get_phy(dev->parent, + USB_PHY_TYPE_USB2); /* if both generic PHY and USB PHY layers aren't enabled */ if (PTR_ERR(ci->phy) == -ENOSYS && -- cgit From a3a47548332864887c212bff14dd1d0013ca4547 Mon Sep 17 00:00:00 2001 From: Paul Kocialkowski Date: Wed, 27 Feb 2019 06:51:38 +0000 Subject: usb: chipidea: Refactor USB PHY selection and keep a single PHY Refactor the code in charge of looking up the USB PHY when no platdata is provided. Attempt to get a generic USB PHY first, then look for a legacy USB PHY through device-tree and finally get any registered PHY with the correct type. This way, only a single USB PHY is obtained and the flow is easier to understand and follow. All error pointers (except for EPROBE_DEFER) are considered as PHY not found. Signed-off-by: Paul Kocialkowski Signed-off-by: Peter Chen Signed-off-by: Greg Kroah-Hartman --- drivers/usb/chipidea/core.c | 49 +++++++++++++++++++++++++++++---------------- 1 file changed, 32 insertions(+), 17 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c index 016e4004fe9d..27749ace2d93 100644 --- a/drivers/usb/chipidea/core.c +++ b/drivers/usb/chipidea/core.c @@ -954,32 +954,47 @@ static int ci_hdrc_probe(struct platform_device *pdev) } else if (ci->platdata->usb_phy) { ci->usb_phy = ci->platdata->usb_phy; } else { - ci->usb_phy = devm_usb_get_phy_by_phandle(dev->parent, "phys", - 0); + /* Look for a generic PHY first */ ci->phy = devm_phy_get(dev->parent, "usb-phy"); - /* Fallback to grabbing any registered USB2 PHY */ - if (IS_ERR(ci->usb_phy) && - PTR_ERR(ci->usb_phy) != -EPROBE_DEFER) + if (PTR_ERR(ci->phy) == -EPROBE_DEFER) { + ret = -EPROBE_DEFER; + goto ulpi_exit; + } else if (IS_ERR(ci->phy)) { + ci->phy = NULL; + } + + /* Look for a legacy USB PHY from device-tree next */ + if (!ci->phy) { + ci->usb_phy = devm_usb_get_phy_by_phandle(dev->parent, + "phys", 0); + + if (PTR_ERR(ci->usb_phy) == -EPROBE_DEFER) { + ret = -EPROBE_DEFER; + goto ulpi_exit; + } else if (IS_ERR(ci->usb_phy)) { + ci->usb_phy = NULL; + } + } + + /* Look for any registered legacy USB PHY as last resort */ + if (!ci->phy && !ci->usb_phy) { ci->usb_phy = devm_usb_get_phy(dev->parent, USB_PHY_TYPE_USB2); - /* if both generic PHY and USB PHY layers aren't enabled */ - if (PTR_ERR(ci->phy) == -ENOSYS && - PTR_ERR(ci->usb_phy) == -ENXIO) { - ret = -ENXIO; - goto ulpi_exit; + if (PTR_ERR(ci->usb_phy) == -EPROBE_DEFER) { + ret = -EPROBE_DEFER; + goto ulpi_exit; + } else if (IS_ERR(ci->usb_phy)) { + ci->usb_phy = NULL; + } } - if (IS_ERR(ci->phy) && IS_ERR(ci->usb_phy)) { - ret = -EPROBE_DEFER; + /* No USB PHY was found in the end */ + if (!ci->phy && !ci->usb_phy) { + ret = -ENXIO; goto ulpi_exit; } - - if (IS_ERR(ci->phy)) - ci->phy = NULL; - else if (IS_ERR(ci->usb_phy)) - ci->usb_phy = NULL; } ret = ci_usb_phy_init(ci); -- cgit From 23f4e3d8b310abfa4adf6ac3e016804a4cccd464 Mon Sep 17 00:00:00 2001 From: Jakub Wilk Date: Wed, 27 Feb 2019 18:52:39 +0100 Subject: usb: core: Fix typo in description of "authorized_default" Add missing right parenthesis. Signed-off-by: Jakub Wilk Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/hcd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index 3b6e3e25f59e..3189181bb628 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -385,7 +385,7 @@ module_param(authorized_default, int, S_IRUGO|S_IWUSR); MODULE_PARM_DESC(authorized_default, "Default USB device authorization: 0 is not authorized, 1 is " "authorized, 2 is authorized for internal devices, -1 is " - "authorized except for wireless USB (default, old behaviour"); + "authorized except for wireless USB (default, old behaviour)"); /*-------------------------------------------------------------------------*/ /** -- cgit From 5d5d44dec7270e06c74b2f83ebca1fc081971862 Mon Sep 17 00:00:00 2001 From: Mans Rullgard Date: Fri, 1 Mar 2019 16:43:20 +0000 Subject: usb: core: make default autosuspend delay configurable Make the default autosuspend delay configurable at build time. This is useful for systems that require a non-standard value as it avoids relying on the command line being properly set. Signed-off-by: Mans Rullgard Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/Kconfig | 12 ++++++++++++ drivers/usb/core/usb.c | 4 ++-- 2 files changed, 14 insertions(+), 2 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/core/Kconfig b/drivers/usb/core/Kconfig index 4453e10b9dbb..bdb6bd0b63a6 100644 --- a/drivers/usb/core/Kconfig +++ b/drivers/usb/core/Kconfig @@ -91,3 +91,15 @@ config USB_LEDS_TRIGGER_USBPORT This driver allows LEDs to be controlled by USB events. Enabling this trigger allows specifying list of USB ports that should turn on LED when some USB device gets connected. + +config USB_AUTOSUSPEND_DELAY + int "Default autosuspend delay" + depends on USB + default 2 + help + The default autosuspend delay in seconds. Can be overridden + with the usbcore.autosuspend command line or module parameter. + + The default value Linux has always had is 2 seconds. Change + this value if you want a different delay and cannot modify + the command line or module parameter. diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c index 9b5852e313f5..7fcb9f782931 100644 --- a/drivers/usb/core/usb.c +++ b/drivers/usb/core/usb.c @@ -64,8 +64,8 @@ int usb_disabled(void) EXPORT_SYMBOL_GPL(usb_disabled); #ifdef CONFIG_PM -static int usb_autosuspend_delay = 2; /* Default delay value, - * in seconds */ +/* Default delay value, in seconds */ +static int usb_autosuspend_delay = CONFIG_USB_AUTOSUSPEND_DELAY; module_param_named(autosuspend, usb_autosuspend_delay, int, 0644); MODULE_PARM_DESC(autosuspend, "default autosuspend delay"); -- cgit From 1c7cf3d5e1c181caca75012b65252288c18a25f2 Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Thu, 28 Feb 2019 20:38:16 -0800 Subject: wusb: Remove unnecessary static function ckhdid_printf This static inline is unnecessary and can be removed by using the vsprintf %ph extension. This reduces overall object size by more than 2K. Reported-by: Louis Taylor Signed-off-by: Joe Perches Reviewed-by: Louis Taylor Signed-off-by: Greg Kroah-Hartman --- drivers/usb/wusbcore/cbaf.c | 15 ++++----------- drivers/usb/wusbcore/dev-sysfs.c | 5 ++--- drivers/usb/wusbcore/devconnect.c | 2 +- drivers/usb/wusbcore/wusbhc.c | 6 +----- 4 files changed, 8 insertions(+), 20 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/wusbcore/cbaf.c b/drivers/usb/wusbcore/cbaf.c index 222228c5c1e1..af77064c7456 100644 --- a/drivers/usb/wusbcore/cbaf.c +++ b/drivers/usb/wusbcore/cbaf.c @@ -302,10 +302,8 @@ static ssize_t cbaf_wusb_chid_show(struct device *dev, { struct usb_interface *iface = to_usb_interface(dev); struct cbaf *cbaf = usb_get_intfdata(iface); - char pr_chid[WUSB_CKHDID_STRSIZE]; - ckhdid_printf(pr_chid, sizeof(pr_chid), &cbaf->chid); - return scnprintf(buf, PAGE_SIZE, "%s\n", pr_chid); + return sprintf(buf, "%16ph\n", cbaf->chid.data); } static ssize_t cbaf_wusb_chid_store(struct device *dev, @@ -415,10 +413,8 @@ static ssize_t cbaf_wusb_cdid_show(struct device *dev, { struct usb_interface *iface = to_usb_interface(dev); struct cbaf *cbaf = usb_get_intfdata(iface); - char pr_cdid[WUSB_CKHDID_STRSIZE]; - ckhdid_printf(pr_cdid, sizeof(pr_cdid), &cbaf->cdid); - return scnprintf(buf, PAGE_SIZE, "%s\n", pr_cdid); + return sprintf(buf, "%16ph\n", cbaf->cdid.data); } static ssize_t cbaf_wusb_cdid_store(struct device *dev, @@ -503,7 +499,6 @@ static int cbaf_cc_upload(struct cbaf *cbaf) int result; struct device *dev = &cbaf->usb_iface->dev; struct wusb_cbaf_cc_data *ccd; - char pr_cdid[WUSB_CKHDID_STRSIZE]; ccd = cbaf->buffer; *ccd = cbaf_cc_data_defaults; @@ -513,10 +508,8 @@ static int cbaf_cc_upload(struct cbaf *cbaf) ccd->BandGroups = cpu_to_le16(cbaf->host_band_groups); dev_dbg(dev, "Trying to upload CC:\n"); - ckhdid_printf(pr_cdid, sizeof(pr_cdid), &ccd->CHID); - dev_dbg(dev, " CHID %s\n", pr_cdid); - ckhdid_printf(pr_cdid, sizeof(pr_cdid), &ccd->CDID); - dev_dbg(dev, " CDID %s\n", pr_cdid); + dev_dbg(dev, " CHID %16ph\n", ccd->CHID.data); + dev_dbg(dev, " CDID %16ph\n", ccd->CDID.data); dev_dbg(dev, " Bandgroups 0x%04x\n", cbaf->host_band_groups); result = usb_control_msg( diff --git a/drivers/usb/wusbcore/dev-sysfs.c b/drivers/usb/wusbcore/dev-sysfs.c index 85a1acf3a729..67b0a4c412b2 100644 --- a/drivers/usb/wusbcore/dev-sysfs.c +++ b/drivers/usb/wusbcore/dev-sysfs.c @@ -50,10 +50,9 @@ static ssize_t wusb_cdid_show(struct device *dev, wusb_dev = wusb_dev_get_by_usb_dev(to_usb_device(dev)); if (wusb_dev == NULL) return -ENODEV; - result = ckhdid_printf(buf, PAGE_SIZE, &wusb_dev->cdid); - strcat(buf, "\n"); + result = sprintf(buf, "%16ph\n", wusb_dev->cdid.data); wusb_dev_put(wusb_dev); - return result + 1; + return result; } static DEVICE_ATTR_RO(wusb_cdid); diff --git a/drivers/usb/wusbcore/devconnect.c b/drivers/usb/wusbcore/devconnect.c index fcb06aef2675..a93837d57d53 100644 --- a/drivers/usb/wusbcore/devconnect.c +++ b/drivers/usb/wusbcore/devconnect.c @@ -532,7 +532,7 @@ static void wusbhc_handle_dn_connect(struct wusbhc *wusbhc, } dnc = container_of(dn_hdr, struct wusb_dn_connect, hdr); - ckhdid_printf(pr_cdid, sizeof(pr_cdid), &dnc->CDID); + sprintf(pr_cdid, "%16ph", dnc->CDID.data); dev_info(dev, "DN CONNECT: device %s @ %x (%s) wants to %s\n", pr_cdid, wusb_dn_connect_prev_dev_addr(dnc), diff --git a/drivers/usb/wusbcore/wusbhc.c b/drivers/usb/wusbcore/wusbhc.c index e5ba6140c1ba..d0b404d258e8 100644 --- a/drivers/usb/wusbcore/wusbhc.c +++ b/drivers/usb/wusbcore/wusbhc.c @@ -80,17 +80,13 @@ static ssize_t wusb_chid_show(struct device *dev, { struct wusbhc *wusbhc = usbhc_dev_to_wusbhc(dev); const struct wusb_ckhdid *chid; - ssize_t result = 0; if (wusbhc->wuie_host_info != NULL) chid = &wusbhc->wuie_host_info->CHID; else chid = &wusb_ckhdid_zero; - result += ckhdid_printf(buf, PAGE_SIZE, chid); - result += sprintf(buf + result, "\n"); - - return result; + return sprintf(buf, "%16ph\n", chid->data); } /* -- cgit From 26fb3dae0a1ec78bdde4b5b72e0e709503e8c596 Mon Sep 17 00:00:00 2001 From: Mike Rapoport Date: Mon, 11 Mar 2019 23:30:42 -0700 Subject: memblock: drop memblock_alloc_*_nopanic() variants As all the memblock allocation functions return NULL in case of error rather than panic(), the duplicates with _nopanic suffix can be removed. Link: http://lkml.kernel.org/r/1548057848-15136-22-git-send-email-rppt@linux.ibm.com Signed-off-by: Mike Rapoport Acked-by: Greg Kroah-Hartman Reviewed-by: Petr Mladek [printk] Cc: Catalin Marinas Cc: Christophe Leroy Cc: Christoph Hellwig Cc: "David S. Miller" Cc: Dennis Zhou Cc: Geert Uytterhoeven Cc: Greentime Hu Cc: Guan Xuetao Cc: Guo Ren Cc: Guo Ren [c-sky] Cc: Heiko Carstens Cc: Juergen Gross [Xen] Cc: Mark Salter Cc: Matt Turner Cc: Max Filippov Cc: Michael Ellerman Cc: Michal Simek Cc: Paul Burton Cc: Richard Weinberger Cc: Rich Felker Cc: Rob Herring Cc: Rob Herring Cc: Russell King Cc: Stafford Horne Cc: Tony Luck Cc: Vineet Gupta Cc: Yoshinori Sato Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/usb/early/xhci-dbc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/early/xhci-dbc.c b/drivers/usb/early/xhci-dbc.c index d2652dccc699..c9cfb100ecdc 100644 --- a/drivers/usb/early/xhci-dbc.c +++ b/drivers/usb/early/xhci-dbc.c @@ -94,7 +94,7 @@ static void * __init xdbc_get_page(dma_addr_t *dma_addr) { void *virt; - virt = memblock_alloc_nopanic(PAGE_SIZE, PAGE_SIZE); + virt = memblock_alloc(PAGE_SIZE, PAGE_SIZE); if (!virt) return NULL; -- cgit From d1252f0237238b912c3e7a51bf237acf34c97983 Mon Sep 17 00:00:00 2001 From: Kristian Evensen Date: Sat, 2 Mar 2019 13:35:53 +0100 Subject: USB: serial: option: add support for Quectel EM12 The Quectel EM12 is a Cat. 12 LTE modem. It behaves in the exactly the same way as the EP06 (including the dynamic configuration behavior), so the same checks on reserved interfaces, etc. are needed. Signed-off-by: Kristian Evensen Cc: stable Signed-off-by: Johan Hovold --- drivers/usb/serial/option.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c index 11b21d9410f3..561d0b641120 100644 --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -246,6 +246,7 @@ static void option_instat_callback(struct urb *urb); #define QUECTEL_PRODUCT_EC25 0x0125 #define QUECTEL_PRODUCT_BG96 0x0296 #define QUECTEL_PRODUCT_EP06 0x0306 +#define QUECTEL_PRODUCT_EM12 0x0512 #define CMOTECH_VENDOR_ID 0x16d8 #define CMOTECH_PRODUCT_6001 0x6001 @@ -1087,6 +1088,9 @@ static const struct usb_device_id option_ids[] = { { USB_DEVICE_AND_INTERFACE_INFO(QUECTEL_VENDOR_ID, QUECTEL_PRODUCT_EP06, 0xff, 0xff, 0xff), .driver_info = RSVD(1) | RSVD(2) | RSVD(3) | RSVD(4) | NUMEP2 }, { USB_DEVICE_AND_INTERFACE_INFO(QUECTEL_VENDOR_ID, QUECTEL_PRODUCT_EP06, 0xff, 0, 0) }, + { USB_DEVICE_AND_INTERFACE_INFO(QUECTEL_VENDOR_ID, QUECTEL_PRODUCT_EM12, 0xff, 0xff, 0xff), + .driver_info = RSVD(1) | RSVD(2) | RSVD(3) | RSVD(4) | NUMEP2 }, + { USB_DEVICE_AND_INTERFACE_INFO(QUECTEL_VENDOR_ID, QUECTEL_PRODUCT_EM12, 0xff, 0, 0) }, { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_6001) }, { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_CMU_300) }, { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_6003), -- cgit From 422c2537ba9d42320f8ab6573940269f87095320 Mon Sep 17 00:00:00 2001 From: George McCollister Date: Tue, 5 Mar 2019 16:05:03 -0600 Subject: USB: serial: ftdi_sio: add additional NovaTech products Add PIDs for the NovaTech OrionLX+ and Orion I/O so they can be automatically detected. Signed-off-by: George McCollister Cc: stable Signed-off-by: Johan Hovold --- drivers/usb/serial/ftdi_sio.c | 2 ++ drivers/usb/serial/ftdi_sio_ids.h | 4 +++- 2 files changed, 5 insertions(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c index 8f5b17471759..1d8461ae2c34 100644 --- a/drivers/usb/serial/ftdi_sio.c +++ b/drivers/usb/serial/ftdi_sio.c @@ -609,6 +609,8 @@ static const struct usb_device_id id_table_combined[] = { .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk }, { USB_DEVICE(FTDI_VID, FTDI_NT_ORIONLXM_PID), .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk }, + { USB_DEVICE(FTDI_VID, FTDI_NT_ORIONLX_PLUS_PID) }, + { USB_DEVICE(FTDI_VID, FTDI_NT_ORION_IO_PID) }, { USB_DEVICE(FTDI_VID, FTDI_SYNAPSE_SS200_PID) }, { USB_DEVICE(FTDI_VID, FTDI_CUSTOMWARE_MINIPLEX_PID) }, { USB_DEVICE(FTDI_VID, FTDI_CUSTOMWARE_MINIPLEX2_PID) }, diff --git a/drivers/usb/serial/ftdi_sio_ids.h b/drivers/usb/serial/ftdi_sio_ids.h index b863bedb55a1..5755f0df0025 100644 --- a/drivers/usb/serial/ftdi_sio_ids.h +++ b/drivers/usb/serial/ftdi_sio_ids.h @@ -567,7 +567,9 @@ /* * NovaTech product ids (FTDI_VID) */ -#define FTDI_NT_ORIONLXM_PID 0x7c90 /* OrionLXm Substation Automation Platform */ +#define FTDI_NT_ORIONLXM_PID 0x7c90 /* OrionLXm Substation Automation Platform */ +#define FTDI_NT_ORIONLX_PLUS_PID 0x7c91 /* OrionLX+ Substation Automation Platform */ +#define FTDI_NT_ORION_IO_PID 0x7c92 /* Orion I/O */ /* * Synapse Wireless product ids (FTDI_VID) -- cgit From f8df5c2c3e2df5ffaf9fb5503da93d477a8c7db4 Mon Sep 17 00:00:00 2001 From: Mans Rullgard Date: Tue, 26 Feb 2019 17:07:10 +0000 Subject: USB: serial: option: set driver_info for SIM5218 and compatibles The SIMCom SIM5218 and compatible devices have 5 USB interfaces, only 4 of which are serial ports. The fifth is a network interface supported by the qmi-wwan driver. Furthermore, the serial ports do not support modem control signals. Add driver_info flags to reflect this. Signed-off-by: Mans Rullgard Fixes: ec0cd94d881c ("usb: option: add SIMCom SIM5218") Cc: stable # 3.2 Signed-off-by: Johan Hovold --- drivers/usb/serial/option.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c index 561d0b641120..db5ece767d59 100644 --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -1067,7 +1067,8 @@ static const struct usb_device_id option_ids[] = { .driver_info = RSVD(3) }, { USB_DEVICE(QUALCOMM_VENDOR_ID, 0x6613)}, /* Onda H600/ZTE MF330 */ { USB_DEVICE(QUALCOMM_VENDOR_ID, 0x0023)}, /* ONYX 3G device */ - { USB_DEVICE(QUALCOMM_VENDOR_ID, 0x9000)}, /* SIMCom SIM5218 */ + { USB_DEVICE(QUALCOMM_VENDOR_ID, 0x9000), /* SIMCom SIM5218 */ + .driver_info = NCTRL(0) | NCTRL(1) | NCTRL(2) | NCTRL(3) | RSVD(4) }, /* Quectel products using Qualcomm vendor ID */ { USB_DEVICE(QUALCOMM_VENDOR_ID, QUECTEL_PRODUCT_UC15)}, { USB_DEVICE(QUALCOMM_VENDOR_ID, QUECTEL_PRODUCT_UC20), -- cgit From e82adc1074a7356f1158233551df9e86b7ebfb82 Mon Sep 17 00:00:00 2001 From: "Gustavo A. R. Silva" Date: Mon, 18 Mar 2019 16:18:30 -0500 Subject: usb: typec: Fix unchecked return value Currently there is no check on platform_get_irq() return value in case it fails, hence never actually reporting any errors and causing unexpected behavior when using such value as argument for function regmap_irq_get_virq(). Fix this by adding a proper check, a message error and return *irq* in case platform_get_irq() fails. Addresses-Coverity-ID: 1443899 ("Improper use of negative value") Fixes: d2061f9cc32d ("usb: typec: add driver for Intel Whiskey Cove PMIC USB Type-C PHY") Cc: stable@vger.kernel.org Signed-off-by: Gustavo A. R. Silva Reviewed-by: Guenter Roeck Acked-by: Heikki Krogerus Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/tcpm/wcove.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/typec/tcpm/wcove.c b/drivers/usb/typec/tcpm/wcove.c index 423208e19383..6770afd40765 100644 --- a/drivers/usb/typec/tcpm/wcove.c +++ b/drivers/usb/typec/tcpm/wcove.c @@ -615,8 +615,13 @@ static int wcove_typec_probe(struct platform_device *pdev) wcove->dev = &pdev->dev; wcove->regmap = pmic->regmap; - irq = regmap_irq_get_virq(pmic->irq_chip_data_chgr, - platform_get_irq(pdev, 0)); + irq = platform_get_irq(pdev, 0); + if (irq < 0) { + dev_err(&pdev->dev, "Failed to get IRQ: %d\n", irq); + return irq; + } + + irq = regmap_irq_get_virq(pmic->irq_chip_data_chgr, irq); if (irq < 0) return irq; -- cgit From 40fc165304f0faaae78b761f8ee30b5d216b1850 Mon Sep 17 00:00:00 2001 From: Yasushi Asano Date: Mon, 18 Feb 2019 11:26:34 +0100 Subject: usb: host: xhci-rcar: Add XHCI_TRUST_TX_LENGTH quirk When plugging BUFFALO LUA4-U3-AGT USB3.0 to Gigabit Ethernet LAN Adapter, warning messages filled up dmesg. [ 101.098287] xhci-hcd ee000000.usb: WARN Successful completion on short TX for slot 1 ep 4: needs XHCI_TRUST_TX_LENGTH quirk? [ 101.117463] xhci-hcd ee000000.usb: WARN Successful completion on short TX for slot 1 ep 4: needs XHCI_TRUST_TX_LENGTH quirk? [ 101.136513] xhci-hcd ee000000.usb: WARN Successful completion on short TX for slot 1 ep 4: needs XHCI_TRUST_TX_LENGTH quirk? Adding the XHCI_TRUST_TX_LENGTH quirk resolves the issue. Signed-off-by: Yasushi Asano Signed-off-by: Spyridon Papageorgiou Acked-by: Yoshihiro Shimoda Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-rcar.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/usb') diff --git a/drivers/usb/host/xhci-rcar.c b/drivers/usb/host/xhci-rcar.c index a6e463715779..671bce18782c 100644 --- a/drivers/usb/host/xhci-rcar.c +++ b/drivers/usb/host/xhci-rcar.c @@ -246,6 +246,7 @@ int xhci_rcar_init_quirk(struct usb_hcd *hcd) if (!xhci_rcar_wait_for_pll_active(hcd)) return -ETIMEDOUT; + xhci->quirks |= XHCI_TRUST_TX_LENGTH; return xhci_rcar_download_firmware(hcd); } -- cgit From 976daf9d1199932df80e7b04546d1a1bd4ed5ece Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Sat, 16 Mar 2019 16:57:12 +0100 Subject: usb: typec: tcpm: Try PD-2.0 if sink does not respond to 3.0 source-caps PD 2.0 sinks are supposed to accept src-capabilities with a 3.0 header and simply ignore any src PDOs which the sink does not understand such as PPS but some 2.0 sinks instead ignore the entire PD_DATA_SOURCE_CAP message, causing contract negotiation to fail. This commit fixes such sinks not working by re-trying the contract negotiation with PD-2.0 source-caps messages if we don't have a contract after PD_N_HARD_RESET_COUNT hard-reset attempts. The problem fixed by this commit was noticed with a Type-C to VGA dongle. Signed-off-by: Hans de Goede Reviewed-by: Guenter Roeck Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/tcpm/tcpm.c | 27 ++++++++++++++++++++++++++- 1 file changed, 26 insertions(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c index 0f62db091d8d..a2233d72ae7c 100644 --- a/drivers/usb/typec/tcpm/tcpm.c +++ b/drivers/usb/typec/tcpm/tcpm.c @@ -37,6 +37,7 @@ S(SRC_ATTACHED), \ S(SRC_STARTUP), \ S(SRC_SEND_CAPABILITIES), \ + S(SRC_SEND_CAPABILITIES_TIMEOUT), \ S(SRC_NEGOTIATE_CAPABILITIES), \ S(SRC_TRANSITION_SUPPLY), \ S(SRC_READY), \ @@ -2966,10 +2967,34 @@ static void run_state_machine(struct tcpm_port *port) /* port->hard_reset_count = 0; */ port->caps_count = 0; port->pd_capable = true; - tcpm_set_state_cond(port, hard_reset_state(port), + tcpm_set_state_cond(port, SRC_SEND_CAPABILITIES_TIMEOUT, PD_T_SEND_SOURCE_CAP); } break; + case SRC_SEND_CAPABILITIES_TIMEOUT: + /* + * Error recovery for a PD_DATA_SOURCE_CAP reply timeout. + * + * PD 2.0 sinks are supposed to accept src-capabilities with a + * 3.0 header and simply ignore any src PDOs which the sink does + * not understand such as PPS but some 2.0 sinks instead ignore + * the entire PD_DATA_SOURCE_CAP message, causing contract + * negotiation to fail. + * + * After PD_N_HARD_RESET_COUNT hard-reset attempts, we try + * sending src-capabilities with a lower PD revision to + * make these broken sinks work. + */ + if (port->hard_reset_count < PD_N_HARD_RESET_COUNT) { + tcpm_set_state(port, HARD_RESET_SEND, 0); + } else if (port->negotiated_rev > PD_REV20) { + port->negotiated_rev--; + port->hard_reset_count = 0; + tcpm_set_state(port, SRC_SEND_CAPABILITIES, 0); + } else { + tcpm_set_state(port, hard_reset_state(port), 0); + } + break; case SRC_NEGOTIATE_CAPABILITIES: ret = tcpm_pd_check_request(port); if (ret < 0) { -- cgit From 238e0268c82789e4c107a37045d529a6dbce51a9 Mon Sep 17 00:00:00 2001 From: Fabrizio Castro Date: Fri, 1 Mar 2019 11:05:45 +0000 Subject: usb: common: Consider only available nodes for dr_mode There are cases where multiple device tree nodes point to the same phy node by means of the "phys" property, but we should only consider those nodes that are marked as available rather than just any node. Fixes: 98bfb3946695 ("usb: of: add an api to get dr_mode by the phy node") Cc: stable@vger.kernel.org # v4.4+ Signed-off-by: Fabrizio Castro Signed-off-by: Greg Kroah-Hartman --- drivers/usb/common/common.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/common/common.c b/drivers/usb/common/common.c index 48277bbc15e4..73c8e6591746 100644 --- a/drivers/usb/common/common.c +++ b/drivers/usb/common/common.c @@ -145,6 +145,8 @@ enum usb_dr_mode of_usb_get_dr_mode_by_phy(struct device_node *np, int arg0) do { controller = of_find_node_with_property(controller, "phys"); + if (!of_device_is_available(controller)) + continue; index = 0; do { if (arg0 == -1) { -- cgit From 22feda47b574c2854cc1a8447a2ae18598752375 Mon Sep 17 00:00:00 2001 From: "Gustavo A. R. Silva" Date: Mon, 18 Mar 2019 09:50:24 -0500 Subject: usb: usb251xb: Remove unnecessary comparison of unsigned integer with >= 0 There is no need to compare *port* with >= 0 because such comparison of an unsigned value is always true. Fix this by removing such comparison. Addresses-Coverity-ID: 1443949 ("Unsigned compared against 0") Fixes: 02a50b875046 ("usb: usb251xb: add usb data lane port swap feature") Signed-off-by: Gustavo A. R. Silva Reviewed-by: Richard Leitner Signed-off-by: Greg Kroah-Hartman --- drivers/usb/misc/usb251xb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/misc/usb251xb.c b/drivers/usb/misc/usb251xb.c index 4d72b7d1d383..2c8e2cad7e10 100644 --- a/drivers/usb/misc/usb251xb.c +++ b/drivers/usb/misc/usb251xb.c @@ -547,7 +547,7 @@ static int usb251xb_get_ofdata(struct usb251xb *hub, */ hub->port_swap = USB251XB_DEF_PORT_SWAP; of_property_for_each_u32(np, "swap-dx-lanes", prop, p, port) { - if ((port >= 0) && (port <= data->port_cnt)) + if (port <= data->port_cnt) hub->port_swap |= BIT(port); } -- cgit From 7ae622c978db6b2e28b4fced6ecd2a174492059d Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Thu, 31 Jan 2019 11:04:19 +0200 Subject: usb: dwc3: pci: add support for Comet Lake PCH ID This patch simply adds a new PCI Device ID Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/dwc3-pci.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/dwc3/dwc3-pci.c b/drivers/usb/dwc3/dwc3-pci.c index fdc6e4e403e8..8cced3609e24 100644 --- a/drivers/usb/dwc3/dwc3-pci.c +++ b/drivers/usb/dwc3/dwc3-pci.c @@ -29,6 +29,7 @@ #define PCI_DEVICE_ID_INTEL_BXT_M 0x1aaa #define PCI_DEVICE_ID_INTEL_APL 0x5aaa #define PCI_DEVICE_ID_INTEL_KBP 0xa2b0 +#define PCI_DEVICE_ID_INTEL_CMLH 0x02ee #define PCI_DEVICE_ID_INTEL_GLK 0x31aa #define PCI_DEVICE_ID_INTEL_CNPLP 0x9dee #define PCI_DEVICE_ID_INTEL_CNPH 0xa36e @@ -305,6 +306,9 @@ static const struct pci_device_id dwc3_pci_id_table[] = { { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_MRFLD), (kernel_ulong_t) &dwc3_pci_mrfld_properties, }, + { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_CMLH), + (kernel_ulong_t) &dwc3_pci_intel_properties, }, + { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_SPTLP), (kernel_ulong_t) &dwc3_pci_intel_properties, }, -- cgit From 9d6a54c1430647355a5e23434881b2ca3d192b48 Mon Sep 17 00:00:00 2001 From: Guido Kiener Date: Tue, 19 Mar 2019 19:12:03 +0100 Subject: usb: gadget: net2280: Fix overrun of OUT messages The OUT endpoint normally blocks (NAK) subsequent packets when a short packet was received and returns an incomplete queue entry to the gadget driver. Thereby the gadget driver can detect a short packet when reading queue entries with a length that is not equal to a multiple of packet size. The start_queue() function enables receiving OUT packets regardless of the content of the OUT FIFO. This results in a race: With the current code, it's possible that the "!ep->is_in && (readl(&ep->regs->ep_stat) & BIT(NAK_OUT_PACKETS))" test in start_dma() will fail, then a short packet will be received, and then start_queue() will call stop_out_naking(). That's what we don't want (OUT naking gets turned off while there is data in the FIFO) because then the next driver request might receive a mixture of old and new packets. With the patch, this race can't occur because the FIFO's state is tested after we know that OUT naking is already turned on, and OUT naking is stopped only when both of the conditions are met. This ensures that all received data is delivered to the gadget driver, which can detect a short packet now before new packets are appended to the last short packet. Acked-by: Alan Stern Signed-off-by: Guido Kiener Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/net2280.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/udc/net2280.c b/drivers/usb/gadget/udc/net2280.c index f63f82450bf4..e0b413e9e532 100644 --- a/drivers/usb/gadget/udc/net2280.c +++ b/drivers/usb/gadget/udc/net2280.c @@ -866,9 +866,6 @@ static void start_queue(struct net2280_ep *ep, u32 dmactl, u32 td_dma) (void) readl(&ep->dev->pci->pcimstctl); writel(BIT(DMA_START), &dma->dmastat); - - if (!ep->is_in) - stop_out_naking(ep); } static void start_dma(struct net2280_ep *ep, struct net2280_request *req) @@ -907,6 +904,7 @@ static void start_dma(struct net2280_ep *ep, struct net2280_request *req) writel(BIT(DMA_START), &dma->dmastat); return; } + stop_out_naking(ep); } tmp = dmactl_default; -- cgit From f1d3fba17cd4eeea20397f1324b7b9c69a6a935c Mon Sep 17 00:00:00 2001 From: Guido Kiener Date: Mon, 18 Mar 2019 09:18:33 +0100 Subject: usb: gadget: net2280: Fix net2280_dequeue() When a request must be dequeued with net2280_dequeue() e.g. due to a device clear action and the same request is finished by the function scan_dma_completions() then the function net2280_dequeue() does not find the request in the following search loop and returns the error -EINVAL without restoring the status ep->stopped. Thus the endpoint keeps blocked and does not receive any data anymore. This fix restores the status and does not issue an error message. Acked-by: Alan Stern Signed-off-by: Guido Kiener Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/net2280.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/udc/net2280.c b/drivers/usb/gadget/udc/net2280.c index e0b413e9e532..898339e5df10 100644 --- a/drivers/usb/gadget/udc/net2280.c +++ b/drivers/usb/gadget/udc/net2280.c @@ -1273,9 +1273,9 @@ static int net2280_dequeue(struct usb_ep *_ep, struct usb_request *_req) break; } if (&req->req != _req) { + ep->stopped = stopped; spin_unlock_irqrestore(&ep->dev->lock, flags); - dev_err(&ep->dev->pdev->dev, "%s: Request mismatch\n", - __func__); + ep_dbg(ep->dev, "%s: Request mismatch\n", __func__); return -EINVAL; } -- cgit From 091dacc3cc10979ab0422f0a9f7fcc27eee97e69 Mon Sep 17 00:00:00 2001 From: Guido Kiener Date: Mon, 18 Mar 2019 09:18:34 +0100 Subject: usb: gadget: net2272: Fix net2272_dequeue() Restore the status of ep->stopped in function net2272_dequeue(). When the given request is not found in the endpoint queue the function returns -EINVAL without restoring the state of ep->stopped. Thus the endpoint keeps blocked and does not transfer any data anymore. This fix is only compile-tested, since we do not have a corresponding hardware. An analogous fix was tested in the sibling driver. See "usb: gadget: net2280: Fix net2280_dequeue()" Acked-by: Alan Stern Signed-off-by: Guido Kiener Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/net2272.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/udc/net2272.c b/drivers/usb/gadget/udc/net2272.c index b77f3126580e..c2011cd7df8c 100644 --- a/drivers/usb/gadget/udc/net2272.c +++ b/drivers/usb/gadget/udc/net2272.c @@ -945,6 +945,7 @@ net2272_dequeue(struct usb_ep *_ep, struct usb_request *_req) break; } if (&req->req != _req) { + ep->stopped = stopped; spin_unlock_irqrestore(&ep->dev->lock, flags); return -EINVAL; } -- cgit From 072684e8c58d17e853f8e8b9f6d9ce2e58d2b036 Mon Sep 17 00:00:00 2001 From: Radoslav Gerganov Date: Tue, 5 Mar 2019 10:10:34 +0000 Subject: USB: gadget: f_hid: fix deadlock in f_hidg_write() In f_hidg_write() the write_spinlock is acquired before calling usb_ep_queue() which causes a deadlock when dummy_hcd is being used. This is because dummy_queue() callbacks into f_hidg_req_complete() which tries to acquire the same spinlock. This is (part of) the backtrace when the deadlock occurs: 0xffffffffc06b1410 in f_hidg_req_complete 0xffffffffc06a590a in usb_gadget_giveback_request 0xffffffffc06cfff2 in dummy_queue 0xffffffffc06a4b96 in usb_ep_queue 0xffffffffc06b1eb6 in f_hidg_write 0xffffffff8127730b in __vfs_write 0xffffffff812774d1 in vfs_write 0xffffffff81277725 in SYSC_write Fix this by releasing the write_spinlock before calling usb_ep_queue() Reviewed-by: James Bottomley Tested-by: James Bottomley Cc: stable@vger.kernel.org # 4.11+ Fixes: 749494b6bdbb ("usb: gadget: f_hid: fix: Move IN request allocation to set_alt()") Signed-off-by: Radoslav Gerganov Signed-off-by: Felipe Balbi --- drivers/usb/gadget/function/f_hid.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/function/f_hid.c b/drivers/usb/gadget/function/f_hid.c index 75b113a5b25c..f3816a5c861e 100644 --- a/drivers/usb/gadget/function/f_hid.c +++ b/drivers/usb/gadget/function/f_hid.c @@ -391,20 +391,20 @@ try_again: req->complete = f_hidg_req_complete; req->context = hidg; + spin_unlock_irqrestore(&hidg->write_spinlock, flags); + status = usb_ep_queue(hidg->in_ep, req, GFP_ATOMIC); if (status < 0) { ERROR(hidg->func.config->cdev, "usb_ep_queue error on int endpoint %zd\n", status); - goto release_write_pending_unlocked; + goto release_write_pending; } else { status = count; } - spin_unlock_irqrestore(&hidg->write_spinlock, flags); return status; release_write_pending: spin_lock_irqsave(&hidg->write_spinlock, flags); -release_write_pending_unlocked: hidg->write_pending = 0; spin_unlock_irqrestore(&hidg->write_spinlock, flags); -- cgit From 2908b076f5198d231de62713cb2b633a3a4b95ac Mon Sep 17 00:00:00 2001 From: Lin Yi Date: Wed, 20 Mar 2019 19:04:56 +0800 Subject: USB: serial: mos7720: fix mos_parport refcount imbalance on error path The write_parport_reg_nonblock() helper takes a reference to the struct mos_parport, but failed to release it in a couple of error paths after allocation failures, leading to a memory leak. Johan said that move the kref_get() and mos_parport assignment to the end of urbtrack initialisation is a better way, so move it. and mos_parport do not used until urbtrack initialisation. Signed-off-by: Lin Yi Fixes: b69578df7e98 ("USB: usbserial: mos7720: add support for parallel port on moschip 7715") Cc: stable # 2.6.35 Signed-off-by: Johan Hovold --- drivers/usb/serial/mos7720.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/mos7720.c b/drivers/usb/serial/mos7720.c index fc52ac75fbf6..18110225d506 100644 --- a/drivers/usb/serial/mos7720.c +++ b/drivers/usb/serial/mos7720.c @@ -366,8 +366,6 @@ static int write_parport_reg_nonblock(struct mos7715_parport *mos_parport, if (!urbtrack) return -ENOMEM; - kref_get(&mos_parport->ref_count); - urbtrack->mos_parport = mos_parport; urbtrack->urb = usb_alloc_urb(0, GFP_ATOMIC); if (!urbtrack->urb) { kfree(urbtrack); @@ -388,6 +386,8 @@ static int write_parport_reg_nonblock(struct mos7715_parport *mos_parport, usb_sndctrlpipe(usbdev, 0), (unsigned char *)urbtrack->setup, NULL, 0, async_complete, urbtrack); + kref_get(&mos_parport->ref_count); + urbtrack->mos_parport = mos_parport; kref_init(&urbtrack->ref_count); INIT_LIST_HEAD(&urbtrack->urblist_entry); -- cgit From 6cbcf596934c8e16d6288c7cc62dfb7ad8eadf15 Mon Sep 17 00:00:00 2001 From: Mathias Nyman Date: Fri, 22 Mar 2019 17:50:15 +0200 Subject: xhci: Fix port resume done detection for SS ports with LPM enabled A suspended SS port in U3 link state will go to U0 when resumed, but can almost immediately after that enter U1 or U2 link power save states before host controller driver reads the port status. Host controller driver only checks for U0 state, and might miss the finished resume, leaving flags unclear and skip notifying usb code of the wake. Add U1 and U2 to the possible link states when checking for finished port resume. Cc: stable Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-ring.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 40fa25c4d041..9215a28dad40 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -1647,10 +1647,13 @@ static void handle_port_status(struct xhci_hcd *xhci, } } - if ((portsc & PORT_PLC) && (portsc & PORT_PLS_MASK) == XDEV_U0 && - DEV_SUPERSPEED_ANY(portsc)) { + if ((portsc & PORT_PLC) && + DEV_SUPERSPEED_ANY(portsc) && + ((portsc & PORT_PLS_MASK) == XDEV_U0 || + (portsc & PORT_PLS_MASK) == XDEV_U1 || + (portsc & PORT_PLS_MASK) == XDEV_U2)) { xhci_dbg(xhci, "resume SS port %d finished\n", port_id); - /* We've just brought the device into U0 through either the + /* We've just brought the device into U0/1/2 through either the * Resume state after a device remote wakeup, or through the * U3Exit state after a host-initiated resume. If it's a device * initiated remote wake, don't pass up the link state change, -- cgit From 8867ea262196a6945c24a0fb739575af646ec0e9 Mon Sep 17 00:00:00 2001 From: Mathias Nyman Date: Fri, 22 Mar 2019 17:50:16 +0200 Subject: usb: xhci: dbc: Don't free all memory with spinlock held The xhci debug capability (DbC) feature did its memory cleanup with spinlock held. dma_free_coherent() warns if called with interrupts disabled move the memory cleanup outside the spinlock Cc: stable Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-dbgcap.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/host/xhci-dbgcap.c b/drivers/usb/host/xhci-dbgcap.c index c78be578abb0..d932cc31711e 100644 --- a/drivers/usb/host/xhci-dbgcap.c +++ b/drivers/usb/host/xhci-dbgcap.c @@ -516,7 +516,6 @@ static int xhci_do_dbc_stop(struct xhci_hcd *xhci) return -1; writel(0, &dbc->regs->control); - xhci_dbc_mem_cleanup(xhci); dbc->state = DS_DISABLED; return 0; @@ -562,8 +561,10 @@ static void xhci_dbc_stop(struct xhci_hcd *xhci) ret = xhci_do_dbc_stop(xhci); spin_unlock_irqrestore(&dbc->lock, flags); - if (!ret) + if (!ret) { + xhci_dbc_mem_cleanup(xhci); pm_runtime_put_sync(xhci_to_hcd(xhci)->self.controller); + } } static void -- cgit From d92f2c59cc2cbca6bfb2cc54882b58ba76b15fd4 Mon Sep 17 00:00:00 2001 From: Mathias Nyman Date: Fri, 22 Mar 2019 17:50:17 +0200 Subject: xhci: Don't let USB3 ports stuck in polling state prevent suspend Commit 2f31a67f01a8 ("usb: xhci: Prevent bus suspend if a port connect change or polling state is detected") was intended to prevent ports that were still link training from being forced to U3 suspend state mid enumeration. This solved enumeration issues for devices with slow link training. Turns out some devices are stuck in the link training/polling state, and thus that patch will prevent suspend completely for these devices. This is seen with USB3 card readers in some MacBooks. Instead of preventing suspend, give some time to complete the link training. On successful training the port will end up as connected and enabled. If port instead is stuck in link training the bus suspend will continue suspending after 360ms (10 * 36ms) timeout (tPollingLFPSTimeout). Original patch was sent to stable, this one should go there as well Fixes: 2f31a67f01a8 ("usb: xhci: Prevent bus suspend if a port connect change or polling state is detected") Cc: stable@vger.kernel.org Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-hub.c | 19 ++++++++++++------- drivers/usb/host/xhci.h | 8 ++++++++ 2 files changed, 20 insertions(+), 7 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c index e2eece693655..96a740543183 100644 --- a/drivers/usb/host/xhci-hub.c +++ b/drivers/usb/host/xhci-hub.c @@ -1545,20 +1545,25 @@ int xhci_bus_suspend(struct usb_hcd *hcd) port_index = max_ports; while (port_index--) { u32 t1, t2; - + int retries = 10; +retry: t1 = readl(ports[port_index]->addr); t2 = xhci_port_state_to_neutral(t1); portsc_buf[port_index] = 0; - /* Bail out if a USB3 port has a new device in link training */ - if ((hcd->speed >= HCD_USB3) && + /* + * Give a USB3 port in link training time to finish, but don't + * prevent suspend as port might be stuck + */ + if ((hcd->speed >= HCD_USB3) && retries-- && (t1 & PORT_PLS_MASK) == XDEV_POLLING) { - bus_state->bus_suspended = 0; spin_unlock_irqrestore(&xhci->lock, flags); - xhci_dbg(xhci, "Bus suspend bailout, port in polling\n"); - return -EBUSY; + msleep(XHCI_PORT_POLLING_LFPS_TIME); + spin_lock_irqsave(&xhci->lock, flags); + xhci_dbg(xhci, "port %d polling in bus suspend, waiting\n", + port_index); + goto retry; } - /* suspend ports in U0, or bail out for new connect changes */ if ((t1 & PORT_PE) && (t1 & PORT_PLS_MASK) == XDEV_U0) { if ((t1 & PORT_CSC) && wake_enabled) { diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index 652dc36e3012..9334cdee382a 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -452,6 +452,14 @@ struct xhci_op_regs { */ #define XHCI_DEFAULT_BESL 4 +/* + * USB3 specification define a 360ms tPollingLFPSTiemout for USB3 ports + * to complete link training. usually link trainig completes much faster + * so check status 10 times with 36ms sleep in places we need to wait for + * polling to complete. + */ +#define XHCI_PORT_POLLING_LFPS_TIME 36 + /** * struct xhci_intr_reg - Interrupt Register Set * @irq_pending: IMAN - Interrupt Management Register. Used to enable -- cgit From e671765e521c571afec3157a7e17502d54f6a43e Mon Sep 17 00:00:00 2001 From: Chen-Yu Tsai Date: Fri, 22 Mar 2019 16:51:08 +0800 Subject: usb: core: Try generic PHY_MODE_USB_HOST if usb_phy_roothub_set_mode fails Some PHYs do not support PHY_MODE_USB_HOST_SS, i.e. USB 3.0 or higher. Fall back and try the more generic PHY_MODE_USB_HOST if it fails. Fixes: b97a31348379 ("usb: core: comply to PHY framework") Signed-off-by: Chen-Yu Tsai Tested-by: Neil Armstrong Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/hcd.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index 3189181bb628..975d7c1288e3 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -2741,6 +2741,9 @@ int usb_add_hcd(struct usb_hcd *hcd, retval = usb_phy_roothub_set_mode(hcd->phy_roothub, PHY_MODE_USB_HOST_SS); + if (retval) + retval = usb_phy_roothub_set_mode(hcd->phy_roothub, + PHY_MODE_USB_HOST); if (retval) goto err_usb_phy_roothub_power_on; -- cgit From 41f00e6e9e55546390031996b773e7f3c1d95928 Mon Sep 17 00:00:00 2001 From: Aditya Pakki Date: Wed, 20 Mar 2019 10:27:11 -0500 Subject: usb: usb251xb: fix to avoid potential NULL pointer dereference of_match_device in usb251xb_probe can fail and returns a NULL pointer. The patch avoids a potential NULL pointer dereference in this scenario. Signed-off-by: Aditya Pakki Reviewed-by: Richard Leitner Signed-off-by: Greg Kroah-Hartman --- drivers/usb/misc/usb251xb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/misc/usb251xb.c b/drivers/usb/misc/usb251xb.c index 2c8e2cad7e10..04684849d683 100644 --- a/drivers/usb/misc/usb251xb.c +++ b/drivers/usb/misc/usb251xb.c @@ -612,7 +612,7 @@ static int usb251xb_probe(struct usb251xb *hub) dev); int err; - if (np) { + if (np && of_id) { err = usb251xb_get_ofdata(hub, (struct usb251xb_data *)of_id->data); if (err) { -- cgit From 3d54d10c6afed34fd45b852bf76f55e8da31d8ef Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Mon, 25 Mar 2019 14:54:30 +0100 Subject: usb: mtu3: fix EXTCON dependency When EXTCON is a loadable module, mtu3 fails to link as built-in: drivers/usb/mtu3/mtu3_plat.o: In function `mtu3_probe': mtu3_plat.c:(.text+0x690): undefined reference to `extcon_get_edev_by_phandle' Add a Kconfig dependency to force mtu3 also to be a loadable module if extconn is, but still allow it to be built without extcon. Fixes: d0ed062a8b75 ("usb: mtu3: dual-role mode support") Signed-off-by: Arnd Bergmann Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/mtu3/Kconfig | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/usb') diff --git a/drivers/usb/mtu3/Kconfig b/drivers/usb/mtu3/Kconfig index bcc23486c4ed..928c2cd6fc00 100644 --- a/drivers/usb/mtu3/Kconfig +++ b/drivers/usb/mtu3/Kconfig @@ -6,6 +6,7 @@ config USB_MTU3 tristate "MediaTek USB3 Dual Role controller" depends on USB || USB_GADGET depends on ARCH_MEDIATEK || COMPILE_TEST + depends on EXTCON || !EXTCON select USB_XHCI_MTK if USB_SUPPORT && USB_XHCI_HCD help Say Y or M here if your system runs on MediaTek SoCs with -- cgit From 93e1c8a638308980309e009cc40b5a57ef87caf1 Mon Sep 17 00:00:00 2001 From: Romain Izard Date: Fri, 22 Mar 2019 16:53:02 +0100 Subject: usb: cdc-acm: fix race during wakeup blocking TX traffic When the kernel is compiled with preemption enabled, the URB completion handler can run in parallel with the work responsible for waking up the tty layer. If the URB handler sets the EVENT_TTY_WAKEUP bit during the call to tty_port_tty_wakeup() to signal that there is room for additional input, it will be cleared at the end of this call. As a result, TX traffic on the upper layer will be blocked. This can be seen with a kernel configured with CONFIG_PREEMPT, and a fast modem connected with PPP running over a USB CDC-ACM port. Use test_and_clear_bit() instead, which ensures that each wakeup requested by the URB completion code will trigger a call to tty_port_tty_wakeup(). Fixes: 1aba579f3cf5 cdc-acm: handle read pipe errors Signed-off-by: Romain Izard Cc: stable Acked-by: Oliver Neukum Signed-off-by: Greg Kroah-Hartman --- drivers/usb/class/cdc-acm.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index 739f8960811a..ec666eb4b7b4 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -558,10 +558,8 @@ static void acm_softint(struct work_struct *work) clear_bit(EVENT_RX_STALL, &acm->flags); } - if (test_bit(EVENT_TTY_WAKEUP, &acm->flags)) { + if (test_and_clear_bit(EVENT_TTY_WAKEUP, &acm->flags)) tty_port_tty_wakeup(&acm->port); - clear_bit(EVENT_TTY_WAKEUP, &acm->flags); - } } /* -- cgit From f276e002793cdb820862e8ea8f76769d56bba575 Mon Sep 17 00:00:00 2001 From: Mukesh Ojha Date: Tue, 26 Mar 2019 13:42:22 +0530 Subject: usb: u132-hcd: fix resource leak if platform_driver_register fails, cleanup the allocated resource gracefully. Signed-off-by: Mukesh Ojha Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/u132-hcd.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/host/u132-hcd.c b/drivers/usb/host/u132-hcd.c index 934584f0a20a..6343fbacd244 100644 --- a/drivers/usb/host/u132-hcd.c +++ b/drivers/usb/host/u132-hcd.c @@ -3204,6 +3204,9 @@ static int __init u132_hcd_init(void) printk(KERN_INFO "driver %s\n", hcd_name); workqueue = create_singlethread_workqueue("u132"); retval = platform_driver_register(&u132_platform_driver); + if (retval) + destroy_workqueue(workqueue); + return retval; } -- cgit From a595ecdd5f60b2d93863cebb07eec7f935839b54 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Wed, 27 Mar 2019 10:11:14 +0900 Subject: USB: serial: cp210x: add new device id Lorenz Messtechnik has a device that is controlled by the cp210x driver, so add the device id to the driver. The device id was provided by Silicon-Labs for the devices from this vendor. Reported-by: Uli Signed-off-by: Greg Kroah-Hartman Cc: stable Signed-off-by: Johan Hovold --- drivers/usb/serial/cp210x.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c index fffe23ab0189..979bef9bfb6b 100644 --- a/drivers/usb/serial/cp210x.c +++ b/drivers/usb/serial/cp210x.c @@ -80,6 +80,7 @@ static const struct usb_device_id id_table[] = { { USB_DEVICE(0x10C4, 0x804E) }, /* Software Bisque Paramount ME build-in converter */ { USB_DEVICE(0x10C4, 0x8053) }, /* Enfora EDG1228 */ { USB_DEVICE(0x10C4, 0x8054) }, /* Enfora GSM2228 */ + { USB_DEVICE(0x10C4, 0x8056) }, /* Lorenz Messtechnik devices */ { USB_DEVICE(0x10C4, 0x8066) }, /* Argussoft In-System Programmer */ { USB_DEVICE(0x10C4, 0x806F) }, /* IMS USB to RS422 Converter Cable */ { USB_DEVICE(0x10C4, 0x807A) }, /* Crumb128 board */ -- cgit From 84f3b43f7378b98b7e3096d5499de75183d4347c Mon Sep 17 00:00:00 2001 From: Bjørn Mork Date: Wed, 27 Mar 2019 15:25:32 +0100 Subject: USB: serial: option: add Olicard 600 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This is a Qualcomm based device with a QMI function on interface 4. It is mode switched from 2020:2030 using a standard eject message. T: Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 6 Spd=480 MxCh= 0 D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 P: Vendor=2020 ProdID=2031 Rev= 2.32 S: Manufacturer=Mobile Connect S: Product=Mobile Connect S: SerialNumber=0123456789ABCDEF C:* #Ifs= 6 Cfg#= 1 Atr=80 MxPwr=500mA I:* If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none) E: Ad=81(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms E: Ad=01(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms I:* If#= 1 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=(none) E: Ad=83(I) Atr=03(Int.) MxPS= 10 Ivl=32ms E: Ad=82(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms E: Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms I:* If#= 2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=(none) E: Ad=85(I) Atr=03(Int.) MxPS= 10 Ivl=32ms E: Ad=84(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms E: Ad=03(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms I:* If#= 3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=(none) E: Ad=87(I) Atr=03(Int.) MxPS= 10 Ivl=32ms E: Ad=86(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms E: Ad=04(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms I:* If#= 4 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none) E: Ad=89(I) Atr=03(Int.) MxPS= 8 Ivl=32ms E: Ad=88(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms E: Ad=05(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms I:* If#= 5 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=(none) E: Ad=8a(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms E: Ad=06(O) Atr=02(Bulk) MxPS= 512 Ivl=125us Cc: stable@vger.kernel.org Signed-off-by: Bjørn Mork [ johan: use tabs to align comments in adjacent lines ] Signed-off-by: Johan Hovold --- drivers/usb/serial/option.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c index db5ece767d59..83869065b802 100644 --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -1945,10 +1945,12 @@ static const struct usb_device_id option_ids[] = { .driver_info = RSVD(4) }, { USB_DEVICE_INTERFACE_CLASS(0x2001, 0x7e35, 0xff), /* D-Link DWM-222 */ .driver_info = RSVD(4) }, - { USB_DEVICE_AND_INTERFACE_INFO(0x07d1, 0x3e01, 0xff, 0xff, 0xff) }, /* D-Link DWM-152/C1 */ - { USB_DEVICE_AND_INTERFACE_INFO(0x07d1, 0x3e02, 0xff, 0xff, 0xff) }, /* D-Link DWM-156/C1 */ - { USB_DEVICE_AND_INTERFACE_INFO(0x07d1, 0x7e11, 0xff, 0xff, 0xff) }, /* D-Link DWM-156/A3 */ - { USB_DEVICE_INTERFACE_CLASS(0x2020, 0x4000, 0xff) }, /* OLICARD300 - MT6225 */ + { USB_DEVICE_AND_INTERFACE_INFO(0x07d1, 0x3e01, 0xff, 0xff, 0xff) }, /* D-Link DWM-152/C1 */ + { USB_DEVICE_AND_INTERFACE_INFO(0x07d1, 0x3e02, 0xff, 0xff, 0xff) }, /* D-Link DWM-156/C1 */ + { USB_DEVICE_AND_INTERFACE_INFO(0x07d1, 0x7e11, 0xff, 0xff, 0xff) }, /* D-Link DWM-156/A3 */ + { USB_DEVICE_INTERFACE_CLASS(0x2020, 0x2031, 0xff), /* Olicard 600 */ + .driver_info = RSVD(4) }, + { USB_DEVICE_INTERFACE_CLASS(0x2020, 0x4000, 0xff) }, /* OLICARD300 - MT6225 */ { USB_DEVICE(INOVIA_VENDOR_ID, INOVIA_SEW858) }, { USB_DEVICE(VIATELECOM_VENDOR_ID, VIATELECOM_PRODUCT_CDS7) }, { USB_DEVICE_AND_INTERFACE_INFO(WETELECOM_VENDOR_ID, WETELECOM_PRODUCT_WMD200, 0xff, 0xff, 0xff) }, -- cgit From c01c348ecdc66085e44912c97368809612231520 Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Mon, 15 Apr 2019 11:51:38 -0400 Subject: USB: core: Fix unterminated string returned by usb_string() Some drivers (such as the vub300 MMC driver) expect usb_string() to return a properly NUL-terminated string, even when an error occurs. (In fact, vub300's probe routine doesn't bother to check the return code from usb_string().) When the driver goes on to use an unterminated string, it leads to kernel errors such as stack-out-of-bounds, as found by the syzkaller USB fuzzer. An out-of-range string index argument is not at all unlikely, given that some devices don't provide string descriptors and therefore list 0 as the value for their string indexes. This patch makes usb_string() return a properly terminated empty string along with the -EINVAL error code when an out-of-range index is encountered. And since a USB string index is a single-byte value, indexes >= 256 are just as invalid as values of 0 or below. Signed-off-by: Alan Stern Reported-by: syzbot+b75b85111c10b8d680f1@syzkaller.appspotmail.com CC: Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/message.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c index 82239f27c4cc..e844bb7b5676 100644 --- a/drivers/usb/core/message.c +++ b/drivers/usb/core/message.c @@ -820,9 +820,11 @@ int usb_string(struct usb_device *dev, int index, char *buf, size_t size) if (dev->state == USB_STATE_SUSPENDED) return -EHOSTUNREACH; - if (size <= 0 || !buf || !index) + if (size <= 0 || !buf) return -EINVAL; buf[0] = 0; + if (index <= 0 || index >= 256) + return -EINVAL; tbuf = kmalloc(256, GFP_NOIO); if (!tbuf) return -ENOMEM; -- cgit From fc834e607ae3d18e1a20bca3f9a2d7f52ea7a2be Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Thu, 18 Apr 2019 13:12:07 -0400 Subject: USB: dummy-hcd: Fix failure to give back unlinked URBs The syzkaller USB fuzzer identified a failure mode in which dummy-hcd would never give back an unlinked URB. This causes usb_kill_urb() to hang, leading to WARNINGs and unkillable threads. In dummy-hcd, all URBs are given back by the dummy_timer() routine as it scans through the list of pending URBS. Failure to give back URBs can be caused by failure to start or early exit from the scanning loop. The code currently has two such pathways: One is triggered when an unsupported bus transfer speed is encountered, and the other by exhausting the simulated bandwidth for USB transfers during a frame. This patch removes those two paths, thereby allowing all unlinked URBs to be given back in a timely manner. It adds a check for the bus speed when the gadget first starts running, so that dummy_timer() will never thereafter encounter an unsupported speed. And it prevents the loop from exiting as soon as the total bandwidth has been used up (the scanning loop continues, giving back unlinked URBs as they are found, but not transferring any more data). Thanks to Andrey Konovalov for manually running the syzkaller fuzzer to help track down the source of the bug. Signed-off-by: Alan Stern Reported-and-tested-by: syzbot+d919b0f29d7b5a4994b9@syzkaller.appspotmail.com CC: Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/udc/dummy_hcd.c | 19 +++++++++++++++---- 1 file changed, 15 insertions(+), 4 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/udc/dummy_hcd.c b/drivers/usb/gadget/udc/dummy_hcd.c index baf72f95f0f1..213b52508621 100644 --- a/drivers/usb/gadget/udc/dummy_hcd.c +++ b/drivers/usb/gadget/udc/dummy_hcd.c @@ -979,8 +979,18 @@ static int dummy_udc_start(struct usb_gadget *g, struct dummy_hcd *dum_hcd = gadget_to_dummy_hcd(g); struct dummy *dum = dum_hcd->dum; - if (driver->max_speed == USB_SPEED_UNKNOWN) + switch (g->speed) { + /* All the speeds we support */ + case USB_SPEED_LOW: + case USB_SPEED_FULL: + case USB_SPEED_HIGH: + case USB_SPEED_SUPER: + break; + default: + dev_err(dummy_dev(dum_hcd), "Unsupported driver max speed %d\n", + driver->max_speed); return -EINVAL; + } /* * SLAVE side init ... the layer above hardware, which @@ -1784,9 +1794,10 @@ static void dummy_timer(struct timer_list *t) /* Bus speed is 500000 bytes/ms, so use a little less */ total = 490000; break; - default: + default: /* Can't happen */ dev_err(dummy_dev(dum_hcd), "bogus device speed\n"); - return; + total = 0; + break; } /* FIXME if HZ != 1000 this will probably misbehave ... */ @@ -1828,7 +1839,7 @@ restart: /* Used up this frame's bandwidth? */ if (total <= 0) - break; + continue; /* find the gadget's ep for this request (if configured) */ address = usb_pipeendpoint (urb->pipe); -- cgit From c2b71462d294cf517a0bc6e4fd6424d7cee5596f Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Fri, 19 Apr 2019 13:52:38 -0400 Subject: USB: core: Fix bug caused by duplicate interface PM usage counter The syzkaller fuzzer reported a bug in the USB hub driver which turned out to be caused by a negative runtime-PM usage counter. This allowed a hub to be runtime suspended at a time when the driver did not expect it. The symptom is a WARNING issued because the hub's status URB is submitted while it is already active: URB 0000000031fb463e submitted while active WARNING: CPU: 0 PID: 2917 at drivers/usb/core/urb.c:363 The negative runtime-PM usage count was caused by an unfortunate design decision made when runtime PM was first implemented for USB. At that time, USB class drivers were allowed to unbind from their interfaces without balancing the usage counter (i.e., leaving it with a positive count). The core code would take care of setting the counter back to 0 before allowing another driver to bind to the interface. Later on when runtime PM was implemented for the entire kernel, the opposite decision was made: Drivers were required to balance their runtime-PM get and put calls. In order to maintain backward compatibility, however, the USB subsystem adapted to the new implementation by keeping an independent usage counter for each interface and using it to automatically adjust the normal usage counter back to 0 whenever a driver was unbound. This approach involves duplicating information, but what is worse, it doesn't work properly in cases where a USB class driver delays decrementing the usage counter until after the driver's disconnect() routine has returned and the counter has been adjusted back to 0. Doing so would cause the usage counter to become negative. There's even a warning about this in the USB power management documentation! As it happens, this is exactly what the hub driver does. The kick_hub_wq() routine increments the runtime-PM usage counter, and the corresponding decrement is carried out by hub_event() in the context of the hub_wq work-queue thread. This work routine may sometimes run after the driver has been unbound from its interface, and when it does it causes the usage counter to go negative. It is not possible for hub_disconnect() to wait for a pending hub_event() call to finish, because hub_disconnect() is called with the device lock held and hub_event() acquires that lock. The only feasible fix is to reverse the original design decision: remove the duplicate interface-specific usage counter and require USB drivers to balance their runtime PM gets and puts. As far as I know, all existing drivers currently do this. Signed-off-by: Alan Stern Reported-and-tested-by: syzbot+7634edaea4d0b341c625@syzkaller.appspotmail.com CC: Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/driver.c | 13 ------------- drivers/usb/storage/realtek_cr.c | 13 +++++-------- 2 files changed, 5 insertions(+), 21 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c index 8987cec9549d..ebcadaad89d1 100644 --- a/drivers/usb/core/driver.c +++ b/drivers/usb/core/driver.c @@ -473,11 +473,6 @@ static int usb_unbind_interface(struct device *dev) pm_runtime_disable(dev); pm_runtime_set_suspended(dev); - /* Undo any residual pm_autopm_get_interface_* calls */ - for (r = atomic_read(&intf->pm_usage_cnt); r > 0; --r) - usb_autopm_put_interface_no_suspend(intf); - atomic_set(&intf->pm_usage_cnt, 0); - if (!error) usb_autosuspend_device(udev); @@ -1633,7 +1628,6 @@ void usb_autopm_put_interface(struct usb_interface *intf) int status; usb_mark_last_busy(udev); - atomic_dec(&intf->pm_usage_cnt); status = pm_runtime_put_sync(&intf->dev); dev_vdbg(&intf->dev, "%s: cnt %d -> %d\n", __func__, atomic_read(&intf->dev.power.usage_count), @@ -1662,7 +1656,6 @@ void usb_autopm_put_interface_async(struct usb_interface *intf) int status; usb_mark_last_busy(udev); - atomic_dec(&intf->pm_usage_cnt); status = pm_runtime_put(&intf->dev); dev_vdbg(&intf->dev, "%s: cnt %d -> %d\n", __func__, atomic_read(&intf->dev.power.usage_count), @@ -1684,7 +1677,6 @@ void usb_autopm_put_interface_no_suspend(struct usb_interface *intf) struct usb_device *udev = interface_to_usbdev(intf); usb_mark_last_busy(udev); - atomic_dec(&intf->pm_usage_cnt); pm_runtime_put_noidle(&intf->dev); } EXPORT_SYMBOL_GPL(usb_autopm_put_interface_no_suspend); @@ -1715,8 +1707,6 @@ int usb_autopm_get_interface(struct usb_interface *intf) status = pm_runtime_get_sync(&intf->dev); if (status < 0) pm_runtime_put_sync(&intf->dev); - else - atomic_inc(&intf->pm_usage_cnt); dev_vdbg(&intf->dev, "%s: cnt %d -> %d\n", __func__, atomic_read(&intf->dev.power.usage_count), status); @@ -1750,8 +1740,6 @@ int usb_autopm_get_interface_async(struct usb_interface *intf) status = pm_runtime_get(&intf->dev); if (status < 0 && status != -EINPROGRESS) pm_runtime_put_noidle(&intf->dev); - else - atomic_inc(&intf->pm_usage_cnt); dev_vdbg(&intf->dev, "%s: cnt %d -> %d\n", __func__, atomic_read(&intf->dev.power.usage_count), status); @@ -1775,7 +1763,6 @@ void usb_autopm_get_interface_no_resume(struct usb_interface *intf) struct usb_device *udev = interface_to_usbdev(intf); usb_mark_last_busy(udev); - atomic_inc(&intf->pm_usage_cnt); pm_runtime_get_noresume(&intf->dev); } EXPORT_SYMBOL_GPL(usb_autopm_get_interface_no_resume); diff --git a/drivers/usb/storage/realtek_cr.c b/drivers/usb/storage/realtek_cr.c index 31b024441938..cc794e25a0b6 100644 --- a/drivers/usb/storage/realtek_cr.c +++ b/drivers/usb/storage/realtek_cr.c @@ -763,18 +763,16 @@ static void rts51x_suspend_timer_fn(struct timer_list *t) break; case RTS51X_STAT_IDLE: case RTS51X_STAT_SS: - usb_stor_dbg(us, "RTS51X_STAT_SS, intf->pm_usage_cnt:%d, power.usage:%d\n", - atomic_read(&us->pusb_intf->pm_usage_cnt), + usb_stor_dbg(us, "RTS51X_STAT_SS, power.usage:%d\n", atomic_read(&us->pusb_intf->dev.power.usage_count)); - if (atomic_read(&us->pusb_intf->pm_usage_cnt) > 0) { + if (atomic_read(&us->pusb_intf->dev.power.usage_count) > 0) { usb_stor_dbg(us, "Ready to enter SS state\n"); rts51x_set_stat(chip, RTS51X_STAT_SS); /* ignore mass storage interface's children */ pm_suspend_ignore_children(&us->pusb_intf->dev, true); usb_autopm_put_interface_async(us->pusb_intf); - usb_stor_dbg(us, "RTS51X_STAT_SS 01, intf->pm_usage_cnt:%d, power.usage:%d\n", - atomic_read(&us->pusb_intf->pm_usage_cnt), + usb_stor_dbg(us, "RTS51X_STAT_SS 01, power.usage:%d\n", atomic_read(&us->pusb_intf->dev.power.usage_count)); } break; @@ -807,11 +805,10 @@ static void rts51x_invoke_transport(struct scsi_cmnd *srb, struct us_data *us) int ret; if (working_scsi(srb)) { - usb_stor_dbg(us, "working scsi, intf->pm_usage_cnt:%d, power.usage:%d\n", - atomic_read(&us->pusb_intf->pm_usage_cnt), + usb_stor_dbg(us, "working scsi, power.usage:%d\n", atomic_read(&us->pusb_intf->dev.power.usage_count)); - if (atomic_read(&us->pusb_intf->pm_usage_cnt) <= 0) { + if (atomic_read(&us->pusb_intf->dev.power.usage_count) <= 0) { ret = usb_autopm_get_interface(us->pusb_intf); usb_stor_dbg(us, "working scsi, ret=%d\n", ret); } -- cgit From c409ca3be3c6ff3a1eeb303b191184e80d412862 Mon Sep 17 00:00:00 2001 From: Malte Leip Date: Sun, 14 Apr 2019 12:00:12 +0200 Subject: usb: usbip: fix isoc packet num validation in get_pipe Change the validation of number_of_packets in get_pipe to compare the number of packets to a fixed maximum number of packets allowed, set to be 1024. This number was chosen due to it being used by other drivers as well, for example drivers/usb/host/uhci-q.c Background/reason: The get_pipe function in stub_rx.c validates the number of packets in isochronous mode and aborts with an error if that number is too large, in order to prevent malicious input from possibly triggering large memory allocations. This was previously done by checking whether pdu->u.cmd_submit.number_of_packets is bigger than the number of packets that would be needed for pdu->u.cmd_submit.transfer_buffer_length bytes if all except possibly the last packet had maximum length, given by usb_endpoint_maxp(epd) * usb_endpoint_maxp_mult(epd). This leads to an error if URBs with packets shorter than the maximum possible length are submitted, which is allowed according to Documentation/driver-api/usb/URB.rst and occurs for example with the snd-usb-audio driver. Fixes: c6688ef9f297 ("usbip: fix stub_rx: harden CMD_SUBMIT path to handle malicious input") Signed-off-by: Malte Leip Cc: stable Acked-by: Shuah Khan Signed-off-by: Greg Kroah-Hartman --- drivers/usb/usbip/stub_rx.c | 12 +++--------- drivers/usb/usbip/usbip_common.h | 7 +++++++ 2 files changed, 10 insertions(+), 9 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/usbip/stub_rx.c b/drivers/usb/usbip/stub_rx.c index 97b09a42a10c..dbfb2f24d71e 100644 --- a/drivers/usb/usbip/stub_rx.c +++ b/drivers/usb/usbip/stub_rx.c @@ -361,16 +361,10 @@ static int get_pipe(struct stub_device *sdev, struct usbip_header *pdu) } if (usb_endpoint_xfer_isoc(epd)) { - /* validate packet size and number of packets */ - unsigned int maxp, packets, bytes; - - maxp = usb_endpoint_maxp(epd); - maxp *= usb_endpoint_maxp_mult(epd); - bytes = pdu->u.cmd_submit.transfer_buffer_length; - packets = DIV_ROUND_UP(bytes, maxp); - + /* validate number of packets */ if (pdu->u.cmd_submit.number_of_packets < 0 || - pdu->u.cmd_submit.number_of_packets > packets) { + pdu->u.cmd_submit.number_of_packets > + USBIP_MAX_ISO_PACKETS) { dev_err(&sdev->udev->dev, "CMD_SUBMIT: isoc invalid num packets %d\n", pdu->u.cmd_submit.number_of_packets); diff --git a/drivers/usb/usbip/usbip_common.h b/drivers/usb/usbip/usbip_common.h index bf8afe9b5883..8be857a4fa13 100644 --- a/drivers/usb/usbip/usbip_common.h +++ b/drivers/usb/usbip/usbip_common.h @@ -121,6 +121,13 @@ extern struct device_attribute dev_attr_usbip_debug; #define USBIP_DIR_OUT 0x00 #define USBIP_DIR_IN 0x01 +/* + * Arbitrary limit for the maximum number of isochronous packets in an URB, + * compare for example the uhci_submit_isochronous function in + * drivers/usb/host/uhci-q.c + */ +#define USBIP_MAX_ISO_PACKETS 1024 + /** * struct usbip_header_basic - data pertinent to every request * @command: the usbip request type -- cgit From ef61eb43ada6c1d6b94668f0f514e4c268093ff3 Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Tue, 23 Apr 2019 14:48:29 -0400 Subject: USB: yurex: Fix protection fault after device removal The syzkaller USB fuzzer found a general-protection-fault bug in the yurex driver. The fault occurs when a device has been unplugged; the driver's interrupt-URB handler logs an error message referring to the device by name, after the device has been unregistered and its name deallocated. This problem is caused by the fact that the interrupt URB isn't cancelled until the driver's private data structure is released, which can happen long after the device is gone. The cure is to make sure that the interrupt URB is killed before yurex_disconnect() returns; this is exactly the sort of thing that usb_poison_urb() was meant for. Signed-off-by: Alan Stern Reported-and-tested-by: syzbot+2eb9121678bdb36e6d57@syzkaller.appspotmail.com CC: Signed-off-by: Greg Kroah-Hartman --- drivers/usb/misc/yurex.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/usb') diff --git a/drivers/usb/misc/yurex.c b/drivers/usb/misc/yurex.c index 6d9fd5f64903..7b306aa22d25 100644 --- a/drivers/usb/misc/yurex.c +++ b/drivers/usb/misc/yurex.c @@ -314,6 +314,7 @@ static void yurex_disconnect(struct usb_interface *interface) usb_deregister_dev(interface, &yurex_class); /* prevent more I/O from starting */ + usb_poison_urb(dev->urb); mutex_lock(&dev->io_mutex); dev->interface = NULL; mutex_unlock(&dev->io_mutex); -- cgit