From 3a48217854458a35c0d74db20c3a52ec7f990360 Mon Sep 17 00:00:00 2001 From: Claudiu Beznea Date: Thu, 23 Jul 2020 21:48:57 +0300 Subject: usb: gadget: udc: atmel: use of_find_matching_node_and_match Instead of trying to match every possible compatible use of_find_matching_node_and_match() and pass the compatible array. Signed-off-by: Claudiu Beznea Signed-off-by: Cristian Birsan Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/atmel_usba_udc.c | 26 +++++++++++++++++++------- 1 file changed, 19 insertions(+), 7 deletions(-) (limited to 'drivers/usb/gadget') diff --git a/drivers/usb/gadget/udc/atmel_usba_udc.c b/drivers/usb/gadget/udc/atmel_usba_udc.c index a6426dd1cfef..bc7f15742a4b 100644 --- a/drivers/usb/gadget/udc/atmel_usba_udc.c +++ b/drivers/usb/gadget/udc/atmel_usba_udc.c @@ -2112,11 +2112,19 @@ static const struct of_device_id atmel_udc_dt_ids[] = { MODULE_DEVICE_TABLE(of, atmel_udc_dt_ids); +static const struct of_device_id atmel_pmc_dt_ids[] = { + { .compatible = "atmel,at91sam9g45-pmc" }, + { .compatible = "atmel,at91sam9rl-pmc" }, + { .compatible = "atmel,at91sam9x5-pmc" }, + { /* sentinel */ } +}; + static struct usba_ep * atmel_udc_of_init(struct platform_device *pdev, struct usba_udc *udc) { struct device_node *np = pdev->dev.of_node; const struct of_device_id *match; + struct device_node *pp; int i, ret; struct usba_ep *eps, *ep; const struct usba_udc_config *udc_config; @@ -2127,13 +2135,17 @@ static struct usba_ep * atmel_udc_of_init(struct platform_device *pdev, udc_config = match->data; udc->errata = udc_config->errata; - udc->pmc = syscon_regmap_lookup_by_compatible("atmel,at91sam9g45-pmc"); - if (IS_ERR(udc->pmc)) - udc->pmc = syscon_regmap_lookup_by_compatible("atmel,at91sam9rl-pmc"); - if (IS_ERR(udc->pmc)) - udc->pmc = syscon_regmap_lookup_by_compatible("atmel,at91sam9x5-pmc"); - if (udc->errata && IS_ERR(udc->pmc)) - return ERR_CAST(udc->pmc); + if (udc->errata) { + pp = of_find_matching_node_and_match(NULL, atmel_pmc_dt_ids, + NULL); + if (!pp) + return ERR_PTR(-ENODEV); + + udc->pmc = syscon_node_to_regmap(pp); + of_node_put(pp); + if (IS_ERR(udc->pmc)) + return ERR_CAST(udc->pmc); + } udc->num_ep = 0; -- cgit From 033b8966e90611f6f76daf4d16bb7fe3ef36a819 Mon Sep 17 00:00:00 2001 From: Cristian Birsan Date: Thu, 23 Jul 2020 21:48:59 +0300 Subject: usb: gadget: udc: atmel: simplify endpoint allocation Simplify the endpoint allocation and cleanup the code. Signed-off-by: Cristian Birsan Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/atmel_usba_udc.c | 21 ++++++++------------- drivers/usb/gadget/udc/atmel_usba_udc.h | 1 - 2 files changed, 8 insertions(+), 14 deletions(-) (limited to 'drivers/usb/gadget') diff --git a/drivers/usb/gadget/udc/atmel_usba_udc.c b/drivers/usb/gadget/udc/atmel_usba_udc.c index bc7f15742a4b..2e9044bcac01 100644 --- a/drivers/usb/gadget/udc/atmel_usba_udc.c +++ b/drivers/usb/gadget/udc/atmel_usba_udc.c @@ -1091,8 +1091,6 @@ found_ep: USBA_BF(EPT_SIZE, fls(ep->fifo_size - 1) - 3); ep->ept_cfg |= USBA_BF(BK_NUMBER, ep->nr_banks); - - ep->udc->configured_ep++; } return _ep; @@ -1786,7 +1784,7 @@ static irqreturn_t usba_udc_irq(int irq, void *devid) if (status & USBA_END_OF_RESET) { struct usba_ep *ep0, *ep; - int i, n; + int i; usba_writel(udc, INT_CLR, USBA_END_OF_RESET|USBA_END_OF_RESUME @@ -1834,13 +1832,14 @@ static irqreturn_t usba_udc_irq(int irq, void *devid) "ODD: EP0 configuration is invalid!\n"); /* Preallocate other endpoints */ - n = fifo_mode ? udc->num_ep : udc->configured_ep; - for (i = 1; i < n; i++) { + for (i = 1; i < udc->num_ep; i++) { ep = &udc->usba_ep[i]; - usba_ep_writel(ep, CFG, ep->ept_cfg); - if (!(usba_ep_readl(ep, CFG) & USBA_EPT_MAPPED)) - dev_err(&udc->pdev->dev, - "ODD: EP%d configuration is invalid!\n", i); + if (ep->ep.claimed) { + usba_ep_writel(ep, CFG, ep->ept_cfg); + if (!(usba_ep_readl(ep, CFG) & USBA_EPT_MAPPED)) + dev_err(&udc->pdev->dev, + "ODD: EP%d configuration is invalid!\n", i); + } } } @@ -2025,9 +2024,6 @@ static int atmel_usba_stop(struct usb_gadget *gadget) if (udc->vbus_pin) disable_irq(gpiod_to_irq(udc->vbus_pin)); - if (fifo_mode == 0) - udc->configured_ep = 1; - udc->suspended = false; usba_stop(udc); @@ -2154,7 +2150,6 @@ static struct usba_ep * atmel_udc_of_init(struct platform_device *pdev, if (fifo_mode == 0) { udc->num_ep = udc_config->num_ep; - udc->configured_ep = 1; } else { udc->num_ep = usba_config_fifo_table(udc); } diff --git a/drivers/usb/gadget/udc/atmel_usba_udc.h b/drivers/usb/gadget/udc/atmel_usba_udc.h index 48e332439ed5..a9bf655eb513 100644 --- a/drivers/usb/gadget/udc/atmel_usba_udc.h +++ b/drivers/usb/gadget/udc/atmel_usba_udc.h @@ -336,7 +336,6 @@ struct usba_udc { int irq; struct gpio_desc *vbus_pin; int num_ep; - int configured_ep; struct usba_fifo_cfg *fifo_cfg; struct clk *pclk; struct clk *hclk; -- cgit From 5b041a30448f6af2676de01685812b260bd95b31 Mon Sep 17 00:00:00 2001 From: Cristian Birsan Date: Thu, 23 Jul 2020 21:49:00 +0300 Subject: usb: gadget: udc: atmel: use 1 bank endpoints for control transfers Use 1 bank endpoints for control transfers Signed-off-by: Cristian Birsan Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/atmel_usba_udc.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/usb/gadget') diff --git a/drivers/usb/gadget/udc/atmel_usba_udc.c b/drivers/usb/gadget/udc/atmel_usba_udc.c index 2e9044bcac01..d8b693b34b57 100644 --- a/drivers/usb/gadget/udc/atmel_usba_udc.c +++ b/drivers/usb/gadget/udc/atmel_usba_udc.c @@ -1056,6 +1056,7 @@ found_ep: switch (usb_endpoint_type(desc)) { case USB_ENDPOINT_XFER_CONTROL: + ep->nr_banks = 1; break; case USB_ENDPOINT_XFER_ISOC: -- cgit From 26b324245018cc966c81097452017dea8f43ffc5 Mon Sep 17 00:00:00 2001 From: Cristian Birsan Date: Thu, 23 Jul 2020 21:49:01 +0300 Subject: usb: gadget: udc: atmel: update endpoint allocation for sam9x60 The DPRAM memory from the USB High Speed Device Port (UDPHS) hardware block was increased. This patch updates the endpoint allocation for sam9x60 to take advantage of this larger memory. At the same time the constraint to allocate the endpoints in order was lifted. To handle old and new hardware in the same driver the ep_prealloc was added. Signed-off-by: Cristian Birsan Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/atmel_usba_udc.c | 20 +++++++++++++++++--- drivers/usb/gadget/udc/atmel_usba_udc.h | 2 ++ 2 files changed, 19 insertions(+), 3 deletions(-) (limited to 'drivers/usb/gadget') diff --git a/drivers/usb/gadget/udc/atmel_usba_udc.c b/drivers/usb/gadget/udc/atmel_usba_udc.c index d8b693b34b57..2b893bceea45 100644 --- a/drivers/usb/gadget/udc/atmel_usba_udc.c +++ b/drivers/usb/gadget/udc/atmel_usba_udc.c @@ -1061,12 +1061,14 @@ found_ep: case USB_ENDPOINT_XFER_ISOC: ep->fifo_size = 1024; - ep->nr_banks = 2; + if (ep->udc->ep_prealloc) + ep->nr_banks = 2; break; case USB_ENDPOINT_XFER_BULK: ep->fifo_size = 512; - ep->nr_banks = 1; + if (ep->udc->ep_prealloc) + ep->nr_banks = 1; break; case USB_ENDPOINT_XFER_INT: @@ -1076,7 +1078,8 @@ found_ep: else ep->fifo_size = roundup_pow_of_two(le16_to_cpu(desc->wMaxPacketSize)); - ep->nr_banks = 1; + if (ep->udc->ep_prealloc) + ep->nr_banks = 1; break; } @@ -2087,23 +2090,33 @@ static const struct usba_udc_config udc_at91sam9rl_cfg = { .errata = &at91sam9rl_errata, .config = ep_config_sam9, .num_ep = ARRAY_SIZE(ep_config_sam9), + .ep_prealloc = true, }; static const struct usba_udc_config udc_at91sam9g45_cfg = { .errata = &at91sam9g45_errata, .config = ep_config_sam9, .num_ep = ARRAY_SIZE(ep_config_sam9), + .ep_prealloc = true, }; static const struct usba_udc_config udc_sama5d3_cfg = { .config = ep_config_sama5, .num_ep = ARRAY_SIZE(ep_config_sama5), + .ep_prealloc = true, +}; + +static const struct usba_udc_config udc_sam9x60_cfg = { + .num_ep = ARRAY_SIZE(ep_config_sam9), + .config = ep_config_sam9, + .ep_prealloc = false, }; static const struct of_device_id atmel_udc_dt_ids[] = { { .compatible = "atmel,at91sam9rl-udc", .data = &udc_at91sam9rl_cfg }, { .compatible = "atmel,at91sam9g45-udc", .data = &udc_at91sam9g45_cfg }, { .compatible = "atmel,sama5d3-udc", .data = &udc_sama5d3_cfg }, + { .compatible = "microchip,sam9x60-udc", .data = &udc_sam9x60_cfg }, { /* sentinel */ } }; @@ -2131,6 +2144,7 @@ static struct usba_ep * atmel_udc_of_init(struct platform_device *pdev, return ERR_PTR(-EINVAL); udc_config = match->data; + udc->ep_prealloc = udc_config->ep_prealloc; udc->errata = udc_config->errata; if (udc->errata) { pp = of_find_matching_node_and_match(NULL, atmel_pmc_dt_ids, diff --git a/drivers/usb/gadget/udc/atmel_usba_udc.h b/drivers/usb/gadget/udc/atmel_usba_udc.h index a9bf655eb513..620472f218bc 100644 --- a/drivers/usb/gadget/udc/atmel_usba_udc.h +++ b/drivers/usb/gadget/udc/atmel_usba_udc.h @@ -317,6 +317,7 @@ struct usba_udc_config { const struct usba_udc_errata *errata; const struct usba_ep_config *config; const int num_ep; + const bool ep_prealloc; }; struct usba_udc { @@ -343,6 +344,7 @@ struct usba_udc { bool bias_pulse_needed; bool clocked; bool suspended; + bool ep_prealloc; u16 devstatus; -- cgit From 072f34c2ebdb0bbc34f05187c7a770a3a23996c6 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Sat, 27 Jun 2020 12:31:50 +0200 Subject: usb: gadget: udc: Drop surplus include The UDC NET2272 driver includes but does not use any symbols from this file, so drop the include. Cc: Felipe Balbi Signed-off-by: Linus Walleij Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/net2272.c | 1 - 1 file changed, 1 deletion(-) (limited to 'drivers/usb/gadget') diff --git a/drivers/usb/gadget/udc/net2272.c b/drivers/usb/gadget/udc/net2272.c index 44d1ea2307bb..440bcb3b6c23 100644 --- a/drivers/usb/gadget/udc/net2272.c +++ b/drivers/usb/gadget/udc/net2272.c @@ -9,7 +9,6 @@ #include #include #include -#include #include #include #include -- cgit From a1c0169a49fc537629cc63da50d2ce0e3b48281c Mon Sep 17 00:00:00 2001 From: Tao Ren Date: Wed, 27 May 2020 18:11:54 -0700 Subject: usb: gadget: aspeed: fixup vhub port irq handling This is a follow-on patch for commit a23be4ed8f48 ("usb: gadget: aspeed: improve vhub port irq handling"): for_each_set_bit() is replaced with simple for() loop because for() loop runs faster on ASPEED BMC. Signed-off-by: Tao Ren Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/aspeed-vhub/core.c | 10 +++------- drivers/usb/gadget/udc/aspeed-vhub/vhub.h | 3 +++ 2 files changed, 6 insertions(+), 7 deletions(-) (limited to 'drivers/usb/gadget') diff --git a/drivers/usb/gadget/udc/aspeed-vhub/core.c b/drivers/usb/gadget/udc/aspeed-vhub/core.c index cdf96911e4b1..be7bb64e3594 100644 --- a/drivers/usb/gadget/udc/aspeed-vhub/core.c +++ b/drivers/usb/gadget/udc/aspeed-vhub/core.c @@ -135,13 +135,9 @@ static irqreturn_t ast_vhub_irq(int irq, void *data) /* Handle device interrupts */ if (istat & vhub->port_irq_mask) { - unsigned long bitmap = istat; - int offset = VHUB_IRQ_DEV1_BIT; - int size = VHUB_IRQ_DEV1_BIT + vhub->max_ports; - - for_each_set_bit_from(offset, &bitmap, size) { - i = offset - VHUB_IRQ_DEV1_BIT; - ast_vhub_dev_irq(&vhub->ports[i].dev); + for (i = 0; i < vhub->max_ports; i++) { + if (istat & VHUB_DEV_IRQ(i)) + ast_vhub_dev_irq(&vhub->ports[i].dev); } } diff --git a/drivers/usb/gadget/udc/aspeed-vhub/vhub.h b/drivers/usb/gadget/udc/aspeed-vhub/vhub.h index 2e5a1ef14a75..87a5dea12d3c 100644 --- a/drivers/usb/gadget/udc/aspeed-vhub/vhub.h +++ b/drivers/usb/gadget/udc/aspeed-vhub/vhub.h @@ -67,6 +67,9 @@ #define VHUB_IRQ_HUB_EP0_SETUP (1 << 0) #define VHUB_IRQ_ACK_ALL 0x1ff +/* Downstream device IRQ mask. */ +#define VHUB_DEV_IRQ(n) (VHUB_IRQ_DEVICE1 << (n)) + /* SW reset reg */ #define VHUB_SW_RESET_EP_POOL (1 << 9) #define VHUB_SW_RESET_DMA_CONTROLLER (1 << 8) -- cgit From e7a0ed3fa31be13a4bf5f81426cb4db560e031ee Mon Sep 17 00:00:00 2001 From: Michał Mirosław Date: Thu, 28 May 2020 20:30:28 +0200 Subject: usb: gadget: f_acm: don't disable disabled EP MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Make debugging real problems easier by not trying to disable an EP that was not yet enabled. Reviewed-by: Peter Chen Signed-off-by: Michał Mirosław Signed-off-by: Felipe Balbi --- drivers/usb/gadget/function/f_acm.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) (limited to 'drivers/usb/gadget') diff --git a/drivers/usb/gadget/function/f_acm.c b/drivers/usb/gadget/function/f_acm.c index 200596ea9557..46647bfac2ef 100644 --- a/drivers/usb/gadget/function/f_acm.c +++ b/drivers/usb/gadget/function/f_acm.c @@ -425,9 +425,11 @@ static int acm_set_alt(struct usb_function *f, unsigned intf, unsigned alt) /* we know alt == 0, so this is an activation or a reset */ if (intf == acm->ctrl_id) { - dev_vdbg(&cdev->gadget->dev, - "reset acm control interface %d\n", intf); - usb_ep_disable(acm->notify); + if (acm->notify->enabled) { + dev_vdbg(&cdev->gadget->dev, + "reset acm control interface %d\n", intf); + usb_ep_disable(acm->notify); + } if (!acm->notify->desc) if (config_ep_by_speed(cdev->gadget, f, acm->notify)) -- cgit From e8d5f92b8d30bb4ade76494490c3c065e12411b1 Mon Sep 17 00:00:00 2001 From: Zqiang Date: Fri, 5 Jun 2020 11:05:33 +0800 Subject: usb: gadget: function: printer: fix use-after-free in __lock_acquire Fix this by increase object reference count. BUG: KASAN: use-after-free in __lock_acquire+0x3fd4/0x4180 kernel/locking/lockdep.c:3831 Read of size 8 at addr ffff8880683b0018 by task syz-executor.0/3377 CPU: 1 PID: 3377 Comm: syz-executor.0 Not tainted 5.6.11 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0xce/0x128 lib/dump_stack.c:118 print_address_description.constprop.4+0x21/0x3c0 mm/kasan/report.c:374 __kasan_report+0x131/0x1b0 mm/kasan/report.c:506 kasan_report+0x12/0x20 mm/kasan/common.c:641 __asan_report_load8_noabort+0x14/0x20 mm/kasan/generic_report.c:135 __lock_acquire+0x3fd4/0x4180 kernel/locking/lockdep.c:3831 lock_acquire+0x127/0x350 kernel/locking/lockdep.c:4488 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x35/0x50 kernel/locking/spinlock.c:159 printer_ioctl+0x4a/0x110 drivers/usb/gadget/function/f_printer.c:723 vfs_ioctl fs/ioctl.c:47 [inline] ksys_ioctl+0xfb/0x130 fs/ioctl.c:763 __do_sys_ioctl fs/ioctl.c:772 [inline] __se_sys_ioctl fs/ioctl.c:770 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:770 do_syscall_64+0x9e/0x510 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4531a9 Code: ed 60 fc ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 bb 60 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fd14ad72c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000073bfa8 RCX: 00000000004531a9 RDX: fffffffffffffff9 RSI: 000000000000009e RDI: 0000000000000003 RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004bbd61 R13: 00000000004d0a98 R14: 00007fd14ad736d4 R15: 00000000ffffffff Allocated by task 2393: save_stack+0x21/0x90 mm/kasan/common.c:72 set_track mm/kasan/common.c:80 [inline] __kasan_kmalloc.constprop.3+0xa7/0xd0 mm/kasan/common.c:515 kasan_kmalloc+0x9/0x10 mm/kasan/common.c:529 kmem_cache_alloc_trace+0xfa/0x2d0 mm/slub.c:2813 kmalloc include/linux/slab.h:555 [inline] kzalloc include/linux/slab.h:669 [inline] gprinter_alloc+0xa1/0x870 drivers/usb/gadget/function/f_printer.c:1416 usb_get_function+0x58/0xc0 drivers/usb/gadget/functions.c:61 config_usb_cfg_link+0x1ed/0x3e0 drivers/usb/gadget/configfs.c:444 configfs_symlink+0x527/0x11d0 fs/configfs/symlink.c:202 vfs_symlink+0x33d/0x5b0 fs/namei.c:4201 do_symlinkat+0x11b/0x1d0 fs/namei.c:4228 __do_sys_symlinkat fs/namei.c:4242 [inline] __se_sys_symlinkat fs/namei.c:4239 [inline] __x64_sys_symlinkat+0x73/0xb0 fs/namei.c:4239 do_syscall_64+0x9e/0x510 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe Freed by task 3368: save_stack+0x21/0x90 mm/kasan/common.c:72 set_track mm/kasan/common.c:80 [inline] kasan_set_free_info mm/kasan/common.c:337 [inline] __kasan_slab_free+0x135/0x190 mm/kasan/common.c:476 kasan_slab_free+0xe/0x10 mm/kasan/common.c:485 slab_free_hook mm/slub.c:1444 [inline] slab_free_freelist_hook mm/slub.c:1477 [inline] slab_free mm/slub.c:3034 [inline] kfree+0xf7/0x410 mm/slub.c:3995 gprinter_free+0x49/0xd0 drivers/usb/gadget/function/f_printer.c:1353 usb_put_function+0x38/0x50 drivers/usb/gadget/functions.c:87 config_usb_cfg_unlink+0x2db/0x3b0 drivers/usb/gadget/configfs.c:485 configfs_unlink+0x3b9/0x7f0 fs/configfs/symlink.c:250 vfs_unlink+0x287/0x570 fs/namei.c:4073 do_unlinkat+0x4f9/0x620 fs/namei.c:4137 __do_sys_unlink fs/namei.c:4184 [inline] __se_sys_unlink fs/namei.c:4182 [inline] __x64_sys_unlink+0x42/0x50 fs/namei.c:4182 do_syscall_64+0x9e/0x510 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe The buggy address belongs to the object at ffff8880683b0000 which belongs to the cache kmalloc-1k of size 1024 The buggy address is located 24 bytes inside of 1024-byte region [ffff8880683b0000, ffff8880683b0400) The buggy address belongs to the page: page:ffffea0001a0ec00 refcount:1 mapcount:0 mapping:ffff88806c00e300 index:0xffff8880683b1800 compound_mapcount: 0 flags: 0x100000000010200(slab|head) raw: 0100000000010200 0000000000000000 0000000600000001 ffff88806c00e300 raw: ffff8880683b1800 000000008010000a 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Reported-by: Kyungtae Kim Signed-off-by: Zqiang Signed-off-by: Felipe Balbi --- drivers/usb/gadget/function/f_printer.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) (limited to 'drivers/usb/gadget') diff --git a/drivers/usb/gadget/function/f_printer.c b/drivers/usb/gadget/function/f_printer.c index 68697f596066..64a4112068fc 100644 --- a/drivers/usb/gadget/function/f_printer.c +++ b/drivers/usb/gadget/function/f_printer.c @@ -31,6 +31,7 @@ #include #include #include +#include #include #include @@ -64,7 +65,7 @@ struct printer_dev { struct usb_gadget *gadget; s8 interface; struct usb_ep *in_ep, *out_ep; - + struct kref kref; struct list_head rx_reqs; /* List of free RX structs */ struct list_head rx_reqs_active; /* List of Active RX xfers */ struct list_head rx_buffers; /* List of completed xfers */ @@ -218,6 +219,13 @@ static inline struct usb_endpoint_descriptor *ep_desc(struct usb_gadget *gadget, /*-------------------------------------------------------------------------*/ +static void printer_dev_free(struct kref *kref) +{ + struct printer_dev *dev = container_of(kref, struct printer_dev, kref); + + kfree(dev); +} + static struct usb_request * printer_req_alloc(struct usb_ep *ep, unsigned len, gfp_t gfp_flags) { @@ -353,6 +361,7 @@ printer_open(struct inode *inode, struct file *fd) spin_unlock_irqrestore(&dev->lock, flags); + kref_get(&dev->kref); DBG(dev, "printer_open returned %x\n", ret); return ret; } @@ -370,6 +379,7 @@ printer_close(struct inode *inode, struct file *fd) dev->printer_status &= ~PRINTER_SELECTED; spin_unlock_irqrestore(&dev->lock, flags); + kref_put(&dev->kref, printer_dev_free); DBG(dev, "printer_close\n"); return 0; @@ -1386,7 +1396,8 @@ static void gprinter_free(struct usb_function *f) struct f_printer_opts *opts; opts = container_of(f->fi, struct f_printer_opts, func_inst); - kfree(dev); + + kref_put(&dev->kref, printer_dev_free); mutex_lock(&opts->lock); --opts->refcnt; mutex_unlock(&opts->lock); @@ -1455,6 +1466,7 @@ static struct usb_function *gprinter_alloc(struct usb_function_instance *fi) return ERR_PTR(-ENOMEM); } + kref_init(&dev->kref); ++opts->refcnt; dev->minor = opts->minor; dev->pnp_string = opts->pnp_string; -- cgit From e20849a8c883abfe4c075f72bf5538d63b7562c4 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Fri, 28 Aug 2020 17:30:55 +0200 Subject: usb: gadget: pch_udc: Convert to use GPIO descriptors This switches the PCH UDC driver to use GPIO descriptors. The way this is supposed to be used is confusing. The code contains the following: /* GPIO port for VBUS detecting */ static int vbus_gpio_port = -1; /* GPIO port number (-1:Not used) */ So a hardcoded GPIO number in the code. Further the probe() path very clearly will exit if the GPIO is not found, so this driver can only be configured by editing the code, hard-coding a GPIO number into this variable. This is simply not how we do things. My guess is that this is used in products by patching a GPIO number into this variable and shipping a kernel that is compile-time tailored for the target system. I switched this mechanism to using a GPIO descriptor associated with the parent PCI device. This can be added by using the 16bit subsystem ID or similar to identify which exact machine we are running on and what GPIO is present on that machine, and then add a GPIO descriptor using gpiod_add_lookup_table() from . Since I don't have any target systems I cannot add this but I'm happy to help. I put in a FIXME so the people actually using this driver knows what to do. Cc: Felipe Balbi Tested-by: Andy Shevchenko Reviewed-by: Andy Shevchenko Signed-off-by: Linus Walleij Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/pch_udc.c | 55 ++++++++++++++++------------------------ 1 file changed, 22 insertions(+), 33 deletions(-) (limited to 'drivers/usb/gadget') diff --git a/drivers/usb/gadget/udc/pch_udc.c b/drivers/usb/gadget/udc/pch_udc.c index 8afc31d94b0e..a3c1fc924268 100644 --- a/drivers/usb/gadget/udc/pch_udc.c +++ b/drivers/usb/gadget/udc/pch_udc.c @@ -12,12 +12,9 @@ #include #include #include -#include +#include #include -/* GPIO port for VBUS detecting */ -static int vbus_gpio_port = -1; /* GPIO port number (-1:Not used) */ - #define PCH_VBUS_PERIOD 3000 /* VBUS polling period (msec) */ #define PCH_VBUS_INTERVAL 10 /* VBUS polling interval (msec) */ @@ -301,13 +298,13 @@ struct pch_udc_ep { /** * struct pch_vbus_gpio_data - Structure holding GPIO informaton * for detecting VBUS - * @port: gpio port number + * @port: gpio descriptor for the VBUS GPIO * @intr: gpio interrupt number * @irq_work_fall: Structure for WorkQueue * @irq_work_rise: Structure for WorkQueue */ struct pch_vbus_gpio_data { - int port; + struct gpio_desc *port; int intr; struct work_struct irq_work_fall; struct work_struct irq_work_rise; @@ -1254,7 +1251,7 @@ static int pch_vbus_gpio_get_value(struct pch_udc_dev *dev) int vbus = 0; if (dev->vbus_gpio.port) - vbus = gpio_get_value(dev->vbus_gpio.port) ? 1 : 0; + vbus = gpiod_get_value(dev->vbus_gpio.port) ? 1 : 0; else vbus = -1; @@ -1356,42 +1353,30 @@ static irqreturn_t pch_vbus_gpio_irq(int irq, void *data) /** * pch_vbus_gpio_init() - This API initializes GPIO port detecting VBUS. * @dev: Reference to the driver structure - * @vbus_gpio_port: Number of GPIO port to detect gpio * * Return codes: * 0: Success * -EINVAL: GPIO port is invalid or can't be initialized. */ -static int pch_vbus_gpio_init(struct pch_udc_dev *dev, int vbus_gpio_port) +static int pch_vbus_gpio_init(struct pch_udc_dev *dev) { int err; int irq_num = 0; + struct gpio_desc *gpiod; - dev->vbus_gpio.port = 0; + dev->vbus_gpio.port = NULL; dev->vbus_gpio.intr = 0; - if (vbus_gpio_port <= -1) - return -EINVAL; - - err = gpio_is_valid(vbus_gpio_port); - if (!err) { - pr_err("%s: gpio port %d is invalid\n", - __func__, vbus_gpio_port); - return -EINVAL; - } - - err = gpio_request(vbus_gpio_port, "pch_vbus"); - if (err) { - pr_err("%s: can't request gpio port %d, err: %d\n", - __func__, vbus_gpio_port, err); - return -EINVAL; - } + /* Retrieve the GPIO line from the USB gadget device */ + gpiod = devm_gpiod_get(dev->gadget.dev.parent, NULL, GPIOD_IN); + if (IS_ERR(gpiod)) + return PTR_ERR(gpiod); + gpiod_set_consumer_name(gpiod, "pch_vbus"); - dev->vbus_gpio.port = vbus_gpio_port; - gpio_direction_input(vbus_gpio_port); + dev->vbus_gpio.port = gpiod; INIT_WORK(&dev->vbus_gpio.irq_work_fall, pch_vbus_gpio_work_fall); - irq_num = gpio_to_irq(vbus_gpio_port); + irq_num = gpiod_to_irq(gpiod); if (irq_num > 0) { irq_set_irq_type(irq_num, IRQ_TYPE_EDGE_BOTH); err = request_irq(irq_num, pch_vbus_gpio_irq, 0, @@ -1417,9 +1402,6 @@ static void pch_vbus_gpio_free(struct pch_udc_dev *dev) { if (dev->vbus_gpio.intr) free_irq(dev->vbus_gpio.intr, dev); - - if (dev->vbus_gpio.port) - gpio_free(dev->vbus_gpio.port); } /** @@ -2894,7 +2876,7 @@ static int pch_udc_pcd_init(struct pch_udc_dev *dev) { pch_udc_init(dev); pch_udc_pcd_reinit(dev); - pch_vbus_gpio_init(dev, vbus_gpio_port); + pch_vbus_gpio_init(dev); return 0; } @@ -3096,6 +3078,13 @@ static int pch_udc_probe(struct pci_dev *pdev, dev->base_addr = pcim_iomap_table(pdev)[bar]; + /* + * FIXME: add a GPIO descriptor table to pdev.dev using + * gpiod_add_descriptor_table() from based on + * the PCI subsystem ID. The system-dependent GPIO is necessary for + * VBUS operation. + */ + /* initialize the hardware */ if (pch_udc_pcd_init(dev)) return -ENODEV; -- cgit From 028296e480c782f13428f234a8239a0cd007bd92 Mon Sep 17 00:00:00 2001 From: Bryan O'Donoghue Date: Sun, 20 Sep 2020 18:01:58 +0100 Subject: USB: gadget: f_ncm: Fix NDP16 datagram validation commit 2b74b0a04d3e ("USB: gadget: f_ncm: add bounds checks to ncm_unwrap_ntb()") adds important bounds checking however it unfortunately also introduces a bug with respect to section 3.3.1 of the NCM specification. wDatagramIndex[1] : "Byte index, in little endian, of the second datagram described by this NDP16. If zero, then this marks the end of the sequence of datagrams in this NDP16." wDatagramLength[1]: "Byte length, in little endian, of the second datagram described by this NDP16. If zero, then this marks the end of the sequence of datagrams in this NDP16." wDatagramIndex[1] and wDatagramLength[1] respectively then may be zero but that does not mean we should throw away the data referenced by wDatagramIndex[0] and wDatagramLength[0] as is currently the case. Breaking the loop on (index2 == 0 || dg_len2 == 0) should come at the end as was previously the case and checks for index2 and dg_len2 should be removed since zero is valid. I'm not sure how much testing the above patch received but for me right now after enumeration ping doesn't work. Reverting the commit restores ping, scp, etc. The extra validation associated with wDatagramIndex[0] and wDatagramLength[0] appears to be valid so, this change removes the incorrect restriction on wDatagramIndex[1] and wDatagramLength[1] restoring data processing between host and device. Fixes: 2b74b0a04d3e ("USB: gadget: f_ncm: add bounds checks to ncm_unwrap_ntb()") Cc: Ilja Van Sprundel Cc: Brooke Basile Cc: stable Signed-off-by: Bryan O'Donoghue Signed-off-by: Felipe Balbi --- drivers/usb/gadget/function/f_ncm.c | 30 ++---------------------------- 1 file changed, 2 insertions(+), 28 deletions(-) (limited to 'drivers/usb/gadget') diff --git a/drivers/usb/gadget/function/f_ncm.c b/drivers/usb/gadget/function/f_ncm.c index b4206b0dede5..1f638759a953 100644 --- a/drivers/usb/gadget/function/f_ncm.c +++ b/drivers/usb/gadget/function/f_ncm.c @@ -1189,7 +1189,6 @@ static int ncm_unwrap_ntb(struct gether *port, const struct ndp_parser_opts *opts = ncm->parser_opts; unsigned crc_len = ncm->is_crc ? sizeof(uint32_t) : 0; int dgram_counter; - bool ndp_after_header; /* dwSignature */ if (get_unaligned_le32(tmp) != opts->nth_sign) { @@ -1216,7 +1215,6 @@ static int ncm_unwrap_ntb(struct gether *port, } ndp_index = get_ncm(&tmp, opts->ndp_index); - ndp_after_header = false; /* Run through all the NDP's in the NTB */ do { @@ -1232,8 +1230,6 @@ static int ncm_unwrap_ntb(struct gether *port, ndp_index); goto err; } - if (ndp_index == opts->nth_size) - ndp_after_header = true; /* * walk through NDP @@ -1312,37 +1308,13 @@ static int ncm_unwrap_ntb(struct gether *port, index2 = get_ncm(&tmp, opts->dgram_item_len); dg_len2 = get_ncm(&tmp, opts->dgram_item_len); - if (index2 == 0 || dg_len2 == 0) - break; - /* wDatagramIndex[1] */ - if (ndp_after_header) { - if (index2 < opts->nth_size + opts->ndp_size) { - INFO(port->func.config->cdev, - "Bad index: %#X\n", index2); - goto err; - } - } else { - if (index2 < opts->nth_size + opts->dpe_size) { - INFO(port->func.config->cdev, - "Bad index: %#X\n", index2); - goto err; - } - } if (index2 > block_len - opts->dpe_size) { INFO(port->func.config->cdev, "Bad index: %#X\n", index2); goto err; } - /* wDatagramLength[1] */ - if ((dg_len2 < 14 + crc_len) || - (dg_len2 > frame_max)) { - INFO(port->func.config->cdev, - "Bad dgram length: %#X\n", dg_len); - goto err; - } - /* * Copy the data into a new skb. * This ensures the truesize is correct @@ -1359,6 +1331,8 @@ static int ncm_unwrap_ntb(struct gether *port, ndp_len -= 2 * (opts->dgram_item_len * 2); dgram_counter++; + if (index2 == 0 || dg_len2 == 0) + break; } while (ndp_len > 2 * (opts->dgram_item_len * 2)); } while (ndp_index); -- cgit From 5bb1d1197374aaf11523c8fd24a4e6f93fb3b343 Mon Sep 17 00:00:00 2001 From: Qinglang Miao Date: Sat, 19 Sep 2020 10:52:08 +0800 Subject: usb: gadget: lpc32xx_udc: Convert to DEFINE_SHOW_ATTRIBUTE Use DEFINE_SHOW_ATTRIBUTE macro to simplify the code. Acked-by: Vladimir Zapolskiy Signed-off-by: Qinglang Miao Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/lpc32xx_udc.c | 17 +++-------------- 1 file changed, 3 insertions(+), 14 deletions(-) (limited to 'drivers/usb/gadget') diff --git a/drivers/usb/gadget/udc/lpc32xx_udc.c b/drivers/usb/gadget/udc/lpc32xx_udc.c index e8a4637a9a17..3f1c62adce4b 100644 --- a/drivers/usb/gadget/udc/lpc32xx_udc.c +++ b/drivers/usb/gadget/udc/lpc32xx_udc.c @@ -495,7 +495,7 @@ static void proc_ep_show(struct seq_file *s, struct lpc32xx_ep *ep) } } -static int proc_udc_show(struct seq_file *s, void *unused) +static int udc_show(struct seq_file *s, void *unused) { struct lpc32xx_udc *udc = s->private; struct lpc32xx_ep *ep; @@ -524,22 +524,11 @@ static int proc_udc_show(struct seq_file *s, void *unused) return 0; } -static int proc_udc_open(struct inode *inode, struct file *file) -{ - return single_open(file, proc_udc_show, PDE_DATA(inode)); -} - -static const struct file_operations proc_ops = { - .owner = THIS_MODULE, - .open = proc_udc_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; +DEFINE_SHOW_ATTRIBUTE(udc); static void create_debug_file(struct lpc32xx_udc *udc) { - udc->pde = debugfs_create_file(debug_filename, 0, NULL, udc, &proc_ops); + udc->pde = debugfs_create_file(debug_filename, 0, NULL, udc, &udc_fops); } static void remove_debug_file(struct lpc32xx_udc *udc) -- cgit From 864bc7e7297fe9282a7e17f01806029eb1d675c1 Mon Sep 17 00:00:00 2001 From: Pawel Laszczak Date: Fri, 18 Sep 2020 10:30:35 +0200 Subject: usb: gadget: config_ep_by_speed_and_alt instead of config_ep_by_speed This patch replace config_ep_by_speed with config_ep_by_speed_and_alt. This change allows to select proper usb_ss_ep_comp_descriptor for each stream capable endpoints. f_tcm function for SS use array of headers for both BOT/UAS alternate setting: static struct usb_descriptor_header *uasp_ss_function_desc[] = { (struct usb_descriptor_header *) &bot_intf_desc, (struct usb_descriptor_header *) &uasp_ss_bi_desc, (struct usb_descriptor_header *) &bot_bi_ep_comp_desc, (struct usb_descriptor_header *) &uasp_ss_bo_desc, (struct usb_descriptor_header *) &bot_bo_ep_comp_desc, (struct usb_descriptor_header *) &uasp_intf_desc, (struct usb_descriptor_header *) &uasp_ss_bi_desc, (struct usb_descriptor_header *) &uasp_bi_ep_comp_desc, (struct usb_descriptor_header *) &uasp_bi_pipe_desc, (struct usb_descriptor_header *) &uasp_ss_bo_desc, (struct usb_descriptor_header *) &uasp_bo_ep_comp_desc, (struct usb_descriptor_header *) &uasp_bo_pipe_desc, (struct usb_descriptor_header *) &uasp_ss_status_desc, (struct usb_descriptor_header *) &uasp_status_in_ep_comp_desc, (struct usb_descriptor_header *) &uasp_status_pipe_desc, (struct usb_descriptor_header *) &uasp_ss_cmd_desc, (struct usb_descriptor_header *) &uasp_cmd_comp_desc, (struct usb_descriptor_header *) &uasp_cmd_pipe_desc, NULL, }; The first 5 descriptors are associated with BOT alternate setting, and others are associated with UAS. During handling UAS alternate setting f_tcm driver invokes config_ep_by_speed and this function sets incorrect companion endpoint descriptor in usb_ep object. Instead setting ep->comp_desc to uasp_bi_ep_comp_desc function in this case set ep->comp_desc to bot_uasp_ss_bi_desc. And in result it uses the descriptor from BOT alternate setting instead UAS. Finally, it causes that controller driver during enabling endpoints detect that just enabled endpoint for bot. Signed-off-by: Jayshri Pawar Signed-off-by: Pawel Laszczak Reviewed-by: Peter Chen Signed-off-by: Felipe Balbi --- drivers/usb/gadget/function/f_tcm.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) (limited to 'drivers/usb/gadget') diff --git a/drivers/usb/gadget/function/f_tcm.c b/drivers/usb/gadget/function/f_tcm.c index 184165e27908..410fa89eae8f 100644 --- a/drivers/usb/gadget/function/f_tcm.c +++ b/drivers/usb/gadget/function/f_tcm.c @@ -392,12 +392,12 @@ static void bot_set_alt(struct f_uas *fu) fu->flags = USBG_IS_BOT; - config_ep_by_speed(gadget, f, fu->ep_in); + config_ep_by_speed_and_alt(gadget, f, fu->ep_in, USB_G_ALT_INT_BBB); ret = usb_ep_enable(fu->ep_in); if (ret) goto err_b_in; - config_ep_by_speed(gadget, f, fu->ep_out); + config_ep_by_speed_and_alt(gadget, f, fu->ep_out, USB_G_ALT_INT_BBB); ret = usb_ep_enable(fu->ep_out); if (ret) goto err_b_out; @@ -852,21 +852,21 @@ static void uasp_set_alt(struct f_uas *fu) if (gadget->speed >= USB_SPEED_SUPER) fu->flags |= USBG_USE_STREAMS; - config_ep_by_speed(gadget, f, fu->ep_in); + config_ep_by_speed_and_alt(gadget, f, fu->ep_in, USB_G_ALT_INT_UAS); ret = usb_ep_enable(fu->ep_in); if (ret) goto err_b_in; - config_ep_by_speed(gadget, f, fu->ep_out); + config_ep_by_speed_and_alt(gadget, f, fu->ep_out, USB_G_ALT_INT_UAS); ret = usb_ep_enable(fu->ep_out); if (ret) goto err_b_out; - config_ep_by_speed(gadget, f, fu->ep_cmd); + config_ep_by_speed_and_alt(gadget, f, fu->ep_cmd, USB_G_ALT_INT_UAS); ret = usb_ep_enable(fu->ep_cmd); if (ret) goto err_cmd; - config_ep_by_speed(gadget, f, fu->ep_status); + config_ep_by_speed_and_alt(gadget, f, fu->ep_status, USB_G_ALT_INT_UAS); ret = usb_ep_enable(fu->ep_status); if (ret) goto err_status; -- cgit From 986499b1569af980a819817f17238015b27793f6 Mon Sep 17 00:00:00 2001 From: Lorenzo Colitti Date: Tue, 25 Aug 2020 14:55:03 +0900 Subject: usb: gadget: f_ncm: fix ncm_bitrate for SuperSpeed and above. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Currently, SuperSpeed NCM gadgets report a speed of 851 Mbps in USB_CDC_NOTIFY_SPEED_CHANGE. But the calculation appears to assume 16 packets per microframe, and USB 3 and above no longer use microframes. Maximum speed is actually much higher. On a direct connection, theoretical throughput is at most 3.86 Gbps for gen1x1 and 9.36 Gbps for gen2x1, and I have seen gadget->host iperf throughput of >2 Gbps for gen1x1 and >4 Gbps for gen2x1. Unfortunately the ConnectionSpeedChange defined in the CDC spec only uses 32-bit values, so we can't report accurate numbers for 10Gbps and above. So, report 3.75Gbps for SuperSpeed (which is roughly maximum theoretical performance) and 4.25Gbps for SuperSpeed Plus (which is close to the maximum that we can report in a 32-bit unsigned integer). This results in: [50879.191272] cdc_ncm 2-2:1.0 enx228b127e050c: renamed from usb0 [50879.234778] cdc_ncm 2-2:1.0 enx228b127e050c: 3750 mbit/s downlink 3750 mbit/s uplink on SuperSpeed and: [50798.434527] cdc_ncm 8-2:1.0 enx228b127e050c: renamed from usb0 [50798.524278] cdc_ncm 8-2:1.0 enx228b127e050c: 4250 mbit/s downlink 4250 mbit/s uplink on SuperSpeed Plus. Fixes: 1650113888fe ("usb: gadget: f_ncm: add SuperSpeed descriptors for CDC NCM") Reviewed-by: Maciej Żenczykowski Signed-off-by: Lorenzo Colitti Signed-off-by: Felipe Balbi --- drivers/usb/gadget/function/f_ncm.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'drivers/usb/gadget') diff --git a/drivers/usb/gadget/function/f_ncm.c b/drivers/usb/gadget/function/f_ncm.c index 1f638759a953..7672fa25085b 100644 --- a/drivers/usb/gadget/function/f_ncm.c +++ b/drivers/usb/gadget/function/f_ncm.c @@ -85,8 +85,10 @@ static inline struct f_ncm *func_to_ncm(struct usb_function *f) /* peak (theoretical) bulk transfer rate in bits-per-second */ static inline unsigned ncm_bitrate(struct usb_gadget *g) { - if (gadget_is_superspeed(g) && g->speed == USB_SPEED_SUPER) - return 13 * 1024 * 8 * 1000 * 8; + if (gadget_is_superspeed(g) && g->speed >= USB_SPEED_SUPER_PLUS) + return 4250000000U; + else if (gadget_is_superspeed(g) && g->speed == USB_SPEED_SUPER) + return 3750000000U; else if (gadget_is_dualspeed(g) && g->speed == USB_SPEED_HIGH) return 13 * 512 * 8 * 1000 * 8; else -- cgit From a176b1a2a73c9598f77f2fa3df67184321092f55 Mon Sep 17 00:00:00 2001 From: Lorenzo Colitti Date: Tue, 25 Aug 2020 14:55:04 +0900 Subject: usb: gadget: f_ncm: set SuperSpeed bulk descriptor bMaxBurst to 15 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This improves performance on fast connections. When directly connecting to a Linux laptop running 5.6, single-stream iperf3 goes from ~1.7Gbps to ~2.3Gbps out, and from ~620Mbps to ~720Mbps in. Reviewed-by: Maciej Żenczykowski Signed-off-by: Lorenzo Colitti Signed-off-by: Felipe Balbi --- drivers/usb/gadget/function/f_ncm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb/gadget') diff --git a/drivers/usb/gadget/function/f_ncm.c b/drivers/usb/gadget/function/f_ncm.c index 7672fa25085b..ffa397a1c3d4 100644 --- a/drivers/usb/gadget/function/f_ncm.c +++ b/drivers/usb/gadget/function/f_ncm.c @@ -378,7 +378,7 @@ static struct usb_ss_ep_comp_descriptor ss_ncm_bulk_comp_desc = { .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, /* the following 2 values can be tweaked if necessary */ - /* .bMaxBurst = 0, */ + .bMaxBurst = 15, /* .bmAttributes = 0, */ }; -- cgit From 7974ecd7d3c0f42a98566f281e44ea8573a2ad88 Mon Sep 17 00:00:00 2001 From: Lorenzo Colitti Date: Tue, 25 Aug 2020 14:55:05 +0900 Subject: usb: gadget: f_ncm: allow using NCM in SuperSpeed Plus gadgets. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Currently, enabling f_ncm at SuperSpeed Plus speeds results in an oops in config_ep_by_speed because ncm_set_alt passes in NULL ssp_descriptors. Fix this by re-using the SuperSpeed descriptors. This is safe because usb_assign_descriptors calls usb_copy_descriptors. Tested: enabled f_ncm on a dwc3 gadget and 10Gbps link, ran iperf Reviewed-by: Maciej Żenczykowski Signed-off-by: Lorenzo Colitti Signed-off-by: Felipe Balbi --- drivers/usb/gadget/function/f_ncm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb/gadget') diff --git a/drivers/usb/gadget/function/f_ncm.c b/drivers/usb/gadget/function/f_ncm.c index ffa397a1c3d4..019bea8e09cc 100644 --- a/drivers/usb/gadget/function/f_ncm.c +++ b/drivers/usb/gadget/function/f_ncm.c @@ -1536,7 +1536,7 @@ static int ncm_bind(struct usb_configuration *c, struct usb_function *f) fs_ncm_notify_desc.bEndpointAddress; status = usb_assign_descriptors(f, ncm_fs_function, ncm_hs_function, - ncm_ss_function, NULL); + ncm_ss_function, ncm_ss_function); if (status) goto fail; -- cgit From d98ef43bfb65b5201e1afe36aaf8c4f9d71b4307 Mon Sep 17 00:00:00 2001 From: Yoshihiro Shimoda Date: Wed, 9 Sep 2020 09:01:32 +0900 Subject: usb: gadget: u_serial: clear suspended flag when disconnecting The commit aba3a8d01d62 ("usb: gadget: u_serial: add suspend resume callbacks") set/cleared the suspended flag in USB bus suspend/resume only. But, when a USB cable is disconnected in the suspend, since some controllers will not detect USB bus resume, the suspended flag is not cleared. After that, user cannot send any data. To fix the issue, clears the suspended flag in the gserial_disconnect(). Fixes: aba3a8d01d62 ("usb: gadget: u_serial: add suspend resume callbacks") Signed-off-by: Yoshihiro Shimoda Tested-by: Linh Phung Tested-by: Tam Nguyen Signed-off-by: Felipe Balbi --- drivers/usb/gadget/function/u_serial.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/usb/gadget') diff --git a/drivers/usb/gadget/function/u_serial.c b/drivers/usb/gadget/function/u_serial.c index 127ecc2b4317..2caccbb6e014 100644 --- a/drivers/usb/gadget/function/u_serial.c +++ b/drivers/usb/gadget/function/u_serial.c @@ -1391,6 +1391,7 @@ void gserial_disconnect(struct gserial *gser) if (port->port.tty) tty_hangup(port->port.tty); } + port->suspended = false; spin_unlock_irqrestore(&port->port_lock, flags); /* disable endpoints, aborting down any active I/O */ -- cgit From 4eea21dc67b0c6ba15ae41b1defa113a680a858e Mon Sep 17 00:00:00 2001 From: Lorenzo Colitti Date: Wed, 19 Aug 2020 01:19:49 +0900 Subject: usb: gadget: u_ether: enable qmult on SuperSpeed Plus as well MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The u_ether driver has a qmult setting that multiplies the transmit queue length (which by default is 2). The intent is that it should be enabled at high/super speed, but because the code does not explicitly check for USB_SUPER_PLUS, it is disabled at that speed. Fix this by ensuring that the queue multiplier is enabled for any wired link at high speed or above. Using >= for USB_SPEED_* constants seems correct because it is what the gadget_is_xxxspeed functions do. The queue multiplier substantially helps performance at higher speeds. On a direct SuperSpeed Plus link to a Linux laptop, iperf3 single TCP stream: Before (qmult=1): 1.3 Gbps After (qmult=5): 3.2 Gbps Fixes: 04617db7aa68 ("usb: gadget: add SS descriptors to Ethernet gadget") Reviewed-by: Maciej Żenczykowski Signed-off-by: Lorenzo Colitti Signed-off-by: Felipe Balbi --- drivers/usb/gadget/function/u_ether.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb/gadget') diff --git a/drivers/usb/gadget/function/u_ether.c b/drivers/usb/gadget/function/u_ether.c index c3cc6bd14e61..31ea76adcc0d 100644 --- a/drivers/usb/gadget/function/u_ether.c +++ b/drivers/usb/gadget/function/u_ether.c @@ -93,7 +93,7 @@ struct eth_dev { static inline int qlen(struct usb_gadget *gadget, unsigned qmult) { if (gadget_is_dualspeed(gadget) && (gadget->speed == USB_SPEED_HIGH || - gadget->speed == USB_SPEED_SUPER)) + gadget->speed >= USB_SPEED_SUPER)) return qmult * DEFAULT_QLEN; else return DEFAULT_QLEN; -- cgit From 87a2dfb136430c914f286e4b9870d538e559df29 Mon Sep 17 00:00:00 2001 From: Ye Bin Date: Mon, 24 Aug 2020 16:42:34 +0800 Subject: usb: gadget: fsl: Fix unsigned expression compared with zero in fsl_udc_probe udc_controller->irq is "unsigned int" always >= 0, but platform_get_irq may return little than zero. So "dc_controller->irq < 0" condition is never accessible. Acked-by: Li Yang Signed-off-by: Ye Bin Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/fsl_udc_core.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'drivers/usb/gadget') diff --git a/drivers/usb/gadget/udc/fsl_udc_core.c b/drivers/usb/gadget/udc/fsl_udc_core.c index a6f7b2594c09..3e98740b8cfc 100644 --- a/drivers/usb/gadget/udc/fsl_udc_core.c +++ b/drivers/usb/gadget/udc/fsl_udc_core.c @@ -2439,11 +2439,12 @@ static int fsl_udc_probe(struct platform_device *pdev) /* DEN is bidirectional ep number, max_ep doubles the number */ udc_controller->max_ep = (dccparams & DCCPARAMS_DEN_MASK) * 2; - udc_controller->irq = platform_get_irq(pdev, 0); - if (udc_controller->irq <= 0) { - ret = udc_controller->irq ? : -ENODEV; + ret = platform_get_irq(pdev, 0); + if (ret <= 0) { + ret = ret ? : -ENODEV; goto err_iounmap; } + udc_controller->irq = ret; ret = request_irq(udc_controller->irq, fsl_udc_irq, IRQF_SHARED, driver_name, udc_controller); -- cgit From 3301c215a2bb94b5a0afcb444bbe9bf2a395a65d Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Fri, 21 Aug 2020 10:55:44 +0800 Subject: USB: UDC: Expand device model API interface The routines used by the UDC core to interface with the kernel's device model, namely usb_add_gadget_udc(), usb_add_gadget_udc_release(), and usb_del_gadget_udc(), provide access to only a subset of the device model's full API. They include functionality equivalent to device_register() and device_unregister() for gadgets, but they omit device_initialize(), device_add(), device_del(), get_device(), and put_device(). This patch expands the UDC API by adding usb_initialize_gadget(), usb_add_gadget(), usb_del_gadget(), usb_get_gadget(), and usb_put_gadget() to fill in the gap. It rewrites the existing routines to call the new ones. CC: Anton Vasilyev CC: Evgeny Novikov CC: Benjamin Herrenschmidt Reviewed-by: Greg Kroah-Hartman Signed-off-by: Alan Stern Signed-off-by: Peter Chen Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/core.c | 78 ++++++++++++++++++++++++++++++++++--------- 1 file changed, 63 insertions(+), 15 deletions(-) (limited to 'drivers/usb/gadget') diff --git a/drivers/usb/gadget/udc/core.c b/drivers/usb/gadget/udc/core.c index 4f82bcd31fd3..2b6770d9fb3f 100644 --- a/drivers/usb/gadget/udc/core.c +++ b/drivers/usb/gadget/udc/core.c @@ -1164,21 +1164,18 @@ static int check_pending_gadget_drivers(struct usb_udc *udc) } /** - * usb_add_gadget_udc_release - adds a new gadget to the udc class driver list + * usb_initialize_gadget - initialize a gadget and its embedded struct device * @parent: the parent device to this udc. Usually the controller driver's * device. - * @gadget: the gadget to be added to the list. + * @gadget: the gadget to be initialized. * @release: a gadget release function. * * Returns zero on success, negative errno otherwise. * Calls the gadget release function in the latter case. */ -int usb_add_gadget_udc_release(struct device *parent, struct usb_gadget *gadget, +void usb_initialize_gadget(struct device *parent, struct usb_gadget *gadget, void (*release)(struct device *dev)) { - struct usb_udc *udc; - int ret = -ENOMEM; - dev_set_name(&gadget->dev, "gadget"); INIT_WORK(&gadget->work, usb_gadget_state_work); gadget->dev.parent = parent; @@ -1189,17 +1186,32 @@ int usb_add_gadget_udc_release(struct device *parent, struct usb_gadget *gadget, gadget->dev.release = usb_udc_nop_release; device_initialize(&gadget->dev); +} +EXPORT_SYMBOL_GPL(usb_initialize_gadget); + +/** + * usb_add_gadget - adds a new gadget to the udc class driver list + * @gadget: the gadget to be added to the list. + * + * Returns zero on success, negative errno otherwise. + * Does not do a final usb_put_gadget() if an error occurs. + */ +int usb_add_gadget(struct usb_gadget *gadget) +{ + struct usb_udc *udc; + int ret = -ENOMEM; udc = kzalloc(sizeof(*udc), GFP_KERNEL); if (!udc) - goto err_put_gadget; + goto error; device_initialize(&udc->dev); udc->dev.release = usb_udc_release; udc->dev.class = udc_class; udc->dev.groups = usb_udc_attr_groups; - udc->dev.parent = parent; - ret = dev_set_name(&udc->dev, "%s", kobject_name(&parent->kobj)); + udc->dev.parent = gadget->dev.parent; + ret = dev_set_name(&udc->dev, "%s", + kobject_name(&gadget->dev.parent->kobj)); if (ret) goto err_put_udc; @@ -1242,8 +1254,30 @@ int usb_add_gadget_udc_release(struct device *parent, struct usb_gadget *gadget, err_put_udc: put_device(&udc->dev); - err_put_gadget: - put_device(&gadget->dev); + error: + return ret; +} +EXPORT_SYMBOL_GPL(usb_add_gadget); + +/** + * usb_add_gadget_udc_release - adds a new gadget to the udc class driver list + * @parent: the parent device to this udc. Usually the controller driver's + * device. + * @gadget: the gadget to be added to the list. + * @release: a gadget release function. + * + * Returns zero on success, negative errno otherwise. + * Calls the gadget release function in the latter case. + */ +int usb_add_gadget_udc_release(struct device *parent, struct usb_gadget *gadget, + void (*release)(struct device *dev)) +{ + int ret; + + usb_initialize_gadget(parent, gadget, release); + ret = usb_add_gadget(gadget); + if (ret) + usb_put_gadget(gadget); return ret; } EXPORT_SYMBOL_GPL(usb_add_gadget_udc_release); @@ -1311,13 +1345,14 @@ static void usb_gadget_remove_driver(struct usb_udc *udc) } /** - * usb_del_gadget_udc - deletes @udc from udc_list + * usb_del_gadget - deletes @udc from udc_list * @gadget: the gadget to be removed. * - * This, will call usb_gadget_unregister_driver() if + * This will call usb_gadget_unregister_driver() if * the @udc is still busy. + * It will not do a final usb_put_gadget(). */ -void usb_del_gadget_udc(struct usb_gadget *gadget) +void usb_del_gadget(struct usb_gadget *gadget) { struct usb_udc *udc = gadget->udc; @@ -1340,7 +1375,20 @@ void usb_del_gadget_udc(struct usb_gadget *gadget) kobject_uevent(&udc->dev.kobj, KOBJ_REMOVE); flush_work(&gadget->work); device_unregister(&udc->dev); - device_unregister(&gadget->dev); + device_del(&gadget->dev); +} +EXPORT_SYMBOL_GPL(usb_del_gadget); + +/** + * usb_del_gadget_udc - deletes @udc from udc_list + * @gadget: the gadget to be removed. + * + * Calls usb_del_gadget() and does a final usb_put_gadget(). + */ +void usb_del_gadget_udc(struct usb_gadget *gadget) +{ + usb_del_gadget(gadget); + usb_put_gadget(gadget); memset(&gadget->dev, 0x00, sizeof(gadget->dev)); } EXPORT_SYMBOL_GPL(usb_del_gadget_udc); -- cgit From f770fbec4165b1acfabdeadb01ad6008d2c537b5 Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Fri, 21 Aug 2020 10:55:45 +0800 Subject: USB: UDC: net2280: Fix memory leaks As Anton and Evgeny have noted, the net2280 UDC driver has a problem with leaking memory along some of its failure pathways. It also has another problem, not previously noted, in that some of the failure pathways will call usb_del_gadget_udc() without first calling usb_add_gadget_udc_release(). And it leaks memory by calling kfree() when it should call put_device(). Previous attempts to fix the problems have failed because of lack of support in the UDC core for separately initializing and adding gadgets, or for separately deleting and freeing gadgets. The previous patch in this series adds the necessary support, making it possible to fix the outstanding problems properly. This patch adds an "added" flag to the net2280 structure to indicate whether or not the gadget has been registered (and thus whether or not to call usb_del_gadget()), and it fixes the deallocation issues by calling usb_put_gadget() at the appropriate point. A similar memory leak issue, apparently never before recognized, stems from the fact that the driver never initializes the drvdata field in the gadget's embedded struct device! Evidently this wasn't noticed because the pointer is only ever used as an argument to kfree(), which doesn't mind getting called with a NULL pointer. In fact, the drvdata for gadget device will be written by usb_composite_dev structure if any gadget class is loaded, so it needs to use usb_gadget structure to get net2280 private data. CC: Benjamin Herrenschmidt Reported-by: Anton Vasilyev Reported-by: Evgeny Novikov Reviewed-by: Greg Kroah-Hartman Signed-off-by: Alan Stern Signed-off-by: Peter Chen Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/net2280.c | 11 +++++++---- drivers/usb/gadget/udc/net2280.h | 1 + 2 files changed, 8 insertions(+), 4 deletions(-) (limited to 'drivers/usb/gadget') diff --git a/drivers/usb/gadget/udc/net2280.c b/drivers/usb/gadget/udc/net2280.c index 7530bd9a08c4..d50bc6e19f2a 100644 --- a/drivers/usb/gadget/udc/net2280.c +++ b/drivers/usb/gadget/udc/net2280.c @@ -3561,7 +3561,7 @@ static irqreturn_t net2280_irq(int irq, void *_dev) static void gadget_release(struct device *_dev) { - struct net2280 *dev = dev_get_drvdata(_dev); + struct net2280 *dev = container_of(_dev, struct net2280, gadget.dev); kfree(dev); } @@ -3572,7 +3572,8 @@ static void net2280_remove(struct pci_dev *pdev) { struct net2280 *dev = pci_get_drvdata(pdev); - usb_del_gadget_udc(&dev->gadget); + if (dev->added) + usb_del_gadget(&dev->gadget); BUG_ON(dev->driver); @@ -3603,6 +3604,7 @@ static void net2280_remove(struct pci_dev *pdev) device_remove_file(&pdev->dev, &dev_attr_registers); ep_info(dev, "unbind\n"); + usb_put_gadget(&dev->gadget); } /* wrap this driver around the specified device, but @@ -3624,6 +3626,7 @@ static int net2280_probe(struct pci_dev *pdev, const struct pci_device_id *id) } pci_set_drvdata(pdev, dev); + usb_initialize_gadget(&pdev->dev, &dev->gadget, gadget_release); spin_lock_init(&dev->lock); dev->quirks = id->driver_data; dev->pdev = pdev; @@ -3774,10 +3777,10 @@ static int net2280_probe(struct pci_dev *pdev, const struct pci_device_id *id) if (retval) goto done; - retval = usb_add_gadget_udc_release(&pdev->dev, &dev->gadget, - gadget_release); + retval = usb_add_gadget(&dev->gadget); if (retval) goto done; + dev->added = 1; return 0; done: diff --git a/drivers/usb/gadget/udc/net2280.h b/drivers/usb/gadget/udc/net2280.h index 85d3ca1698ba..7da3dc1e9729 100644 --- a/drivers/usb/gadget/udc/net2280.h +++ b/drivers/usb/gadget/udc/net2280.h @@ -156,6 +156,7 @@ struct net2280 { softconnect : 1, got_irq : 1, region:1, + added:1, u1_enable:1, u2_enable:1, ltm_enable:1, -- cgit From 9b719c7119e77e8ddeefe4772c554d2863579c2b Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Fri, 21 Aug 2020 10:55:46 +0800 Subject: USB: UDC: net2272: Fix memory leaks Like net2280 (on which it was based), the net2272 UDC driver has a problem with leaking memory along some of its failure pathways. It also has another problem, not previously noted, in that some of the failure pathways will call usb_del_gadget_udc() without first calling usb_add_gadget_udc_release(). And it leaks memory by calling kfree() when it should call put_device(). Until now it has been impossible to handle the memory leaks, because of lack of support in the UDC core for separately initializing and adding gadgets, or for separately deleting and freeing gadgets. An earlier patch in this series adds the necessary support, making it possible to fix the outstanding problems properly. This patch adds an "added" flag to the net2272 structure to indicate whether or not the gadget has been registered (and thus whether or not to call usb_del_gadget()), and it fixes the deallocation issues by calling usb_put_gadget() at the appropriate places. A similar memory leak issue, apparently never before recognized, stems from the fact that the driver never initializes the drvdata field in the gadget's embedded struct device! Evidently this wasn't noticed because the pointer is only ever used as an argument to kfree(), which doesn't mind getting called with a NULL pointer. In fact, the drvdata for gadget device will be written by usb_composite_dev structure if any gadget class is loaded, so it needs to use usb_gadget structure to get net2280 private data. CC: Anton Vasilyev CC: Evgeny Novikov CC: Benjamin Herrenschmidt Reviewed-by: Greg Kroah-Hartman Signed-off-by: Alan Stern Signed-off-by: Peter Chen Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/net2272.c | 23 +++++++++++++---------- drivers/usb/gadget/udc/net2272.h | 1 + 2 files changed, 14 insertions(+), 10 deletions(-) (limited to 'drivers/usb/gadget') diff --git a/drivers/usb/gadget/udc/net2272.c b/drivers/usb/gadget/udc/net2272.c index 440bcb3b6c23..23a735641c3d 100644 --- a/drivers/usb/gadget/udc/net2272.c +++ b/drivers/usb/gadget/udc/net2272.c @@ -2195,7 +2195,8 @@ static int net2272_present(struct net2272 *dev) static void net2272_gadget_release(struct device *_dev) { - struct net2272 *dev = dev_get_drvdata(_dev); + struct net2272 *dev = container_of(_dev, struct net2272, gadget.dev); + kfree(dev); } @@ -2204,7 +2205,8 @@ net2272_gadget_release(struct device *_dev) static void net2272_remove(struct net2272 *dev) { - usb_del_gadget_udc(&dev->gadget); + if (dev->added) + usb_del_gadget(&dev->gadget); free_irq(dev->irq, dev); iounmap(dev->base_addr); device_remove_file(dev->dev, &dev_attr_registers); @@ -2234,6 +2236,7 @@ static struct net2272 *net2272_probe_init(struct device *dev, unsigned int irq) /* the "gadget" abstracts/virtualizes the controller */ ret->gadget.name = driver_name; + usb_initialize_gadget(dev, &ret->gadget, net2272_gadget_release); return ret; } @@ -2272,10 +2275,10 @@ net2272_probe_fin(struct net2272 *dev, unsigned int irqflags) if (ret) goto err_irq; - ret = usb_add_gadget_udc_release(dev->dev, &dev->gadget, - net2272_gadget_release); + ret = usb_add_gadget(&dev->gadget); if (ret) goto err_add_udc; + dev->added = 1; return 0; @@ -2450,7 +2453,7 @@ net2272_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) if (pci_enable_device(pdev) < 0) { ret = -ENODEV; - goto err_free; + goto err_put; } pci_set_master(pdev); @@ -2473,8 +2476,8 @@ net2272_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) err_pci: pci_disable_device(pdev); - err_free: - kfree(dev); + err_put: + usb_put_gadget(&dev->gadget); return ret; } @@ -2535,7 +2538,7 @@ net2272_pci_remove(struct pci_dev *pdev) pci_disable_device(pdev); - kfree(dev); + usb_put_gadget(&dev->gadget); } /* Table of matching PCI IDs */ @@ -2648,7 +2651,7 @@ net2272_plat_probe(struct platform_device *pdev) err_req: release_mem_region(base, len); err: - kfree(dev); + usb_put_gadget(&dev->gadget); return ret; } @@ -2663,7 +2666,7 @@ net2272_plat_remove(struct platform_device *pdev) release_mem_region(pdev->resource[0].start, resource_size(&pdev->resource[0])); - kfree(dev); + usb_put_gadget(&dev->gadget); return 0; } diff --git a/drivers/usb/gadget/udc/net2272.h b/drivers/usb/gadget/udc/net2272.h index 87d0ab9ffeeb..c669308111c2 100644 --- a/drivers/usb/gadget/udc/net2272.h +++ b/drivers/usb/gadget/udc/net2272.h @@ -441,6 +441,7 @@ struct net2272 { unsigned protocol_stall:1, softconnect:1, wakeup:1, + added:1, dma_eot_polarity:1, dma_dack_polarity:1, dma_dreq_polarity:1, -- cgit From 7595c38bb1a64b3103ded1877bbf519e7dad4b1d Mon Sep 17 00:00:00 2001 From: Peter Chen Date: Fri, 21 Aug 2020 10:55:49 +0800 Subject: Revert "usb: udc: allow adding and removing the same gadget device" We have already allocated gadget structure dynamically at UDC (dwc3) driver, so commit fac323471df6 ("usb: udc: allow adding and removing the same gadget device")could be reverted. Cc: Greg Kroah-Hartman Cc: Alan Stern Reviewed-by: Greg Kroah-Hartman Reviewed-by: Alan Stern Signed-off-by: Peter Chen Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/core.c | 1 - 1 file changed, 1 deletion(-) (limited to 'drivers/usb/gadget') diff --git a/drivers/usb/gadget/udc/core.c b/drivers/usb/gadget/udc/core.c index 2b6770d9fb3f..bf1b0efcfaac 100644 --- a/drivers/usb/gadget/udc/core.c +++ b/drivers/usb/gadget/udc/core.c @@ -1389,7 +1389,6 @@ void usb_del_gadget_udc(struct usb_gadget *gadget) { usb_del_gadget(gadget); usb_put_gadget(gadget); - memset(&gadget->dev, 0x00, sizeof(gadget->dev)); } EXPORT_SYMBOL_GPL(usb_del_gadget_udc); -- cgit From de56298f78e449e9490a8621d3bd80a04ad40e6d Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Fri, 31 Jul 2020 09:41:22 +0200 Subject: usb: gadget: s3c: Remove unused 'udc' variable Remove unused 'udc' variable to fix compile warnings: drivers/usb/gadget/udc/s3c2410_udc.c: In function 's3c2410_udc_dequeue': drivers/usb/gadget/udc/s3c2410_udc.c:1268:22: warning: variable 'udc' set but not used [-Wunused-but-set-variable] Reviewed-by: Nathan Chancellor Signed-off-by: Krzysztof Kozlowski Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/s3c2410_udc.c | 3 --- 1 file changed, 3 deletions(-) (limited to 'drivers/usb/gadget') diff --git a/drivers/usb/gadget/udc/s3c2410_udc.c b/drivers/usb/gadget/udc/s3c2410_udc.c index bc2e8eb737c3..e875a0b967c0 100644 --- a/drivers/usb/gadget/udc/s3c2410_udc.c +++ b/drivers/usb/gadget/udc/s3c2410_udc.c @@ -1270,7 +1270,6 @@ static int s3c2410_udc_queue(struct usb_ep *_ep, struct usb_request *_req, static int s3c2410_udc_dequeue(struct usb_ep *_ep, struct usb_request *_req) { struct s3c2410_ep *ep = to_s3c2410_ep(_ep); - struct s3c2410_udc *udc; int retval = -EINVAL; unsigned long flags; struct s3c2410_request *req = NULL; @@ -1283,8 +1282,6 @@ static int s3c2410_udc_dequeue(struct usb_ep *_ep, struct usb_request *_req) if (!_ep || !_req) return retval; - udc = to_s3c2410_udc(ep->gadget); - local_irq_save(flags); list_for_each_entry(req, &ep->queue, queue) { -- cgit From 5a1da544e572f58986d7bee03d31c91d1f87f214 Mon Sep 17 00:00:00 2001 From: Peter Chen Date: Tue, 11 Aug 2020 10:00:26 +0800 Subject: usb: gadget: core: do not try to disconnect gadget if it is not connected Current UDC core connects gadget during the loading gadget flow (udc_bind_to_driver->usb_udc_connect_control), but for platforms which do not connect gadget if the VBUS is not there, they call usb_gadget_disconnect, but the gadget is not connected at this time, notify disconnecton for the gadget driver is meaningless at this situation. Signed-off-by: Peter Chen Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/core.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/usb/gadget') diff --git a/drivers/usb/gadget/udc/core.c b/drivers/usb/gadget/udc/core.c index bf1b0efcfaac..debf54205d22 100644 --- a/drivers/usb/gadget/udc/core.c +++ b/drivers/usb/gadget/udc/core.c @@ -715,6 +715,9 @@ int usb_gadget_disconnect(struct usb_gadget *gadget) goto out; } + if (!gadget->connected) + goto out; + if (gadget->deactivated) { /* * If gadget is deactivated we only save new state. -- cgit From 6c2a754a12ba9255cf34fac435fb0c448dce9a95 Mon Sep 17 00:00:00 2001 From: Christophe JAILLET Date: Sun, 9 Aug 2020 09:29:48 +0200 Subject: usb: gadget: tegra-xudc: Avoid GFP_ATOMIC where it is not needed There is no need to use GFP_ATOMIC here. It is a probe function, no spinlock is taken. Reviewed-by: JC Kuo Acked-by: Thierry Reding Signed-off-by: Christophe JAILLET Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/tegra-xudc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb/gadget') diff --git a/drivers/usb/gadget/udc/tegra-xudc.c b/drivers/usb/gadget/udc/tegra-xudc.c index d6ff68c06911..9aa4815c1c59 100644 --- a/drivers/usb/gadget/udc/tegra-xudc.c +++ b/drivers/usb/gadget/udc/tegra-xudc.c @@ -3733,7 +3733,7 @@ static int tegra_xudc_probe(struct platform_device *pdev) unsigned int i; int err; - xudc = devm_kzalloc(&pdev->dev, sizeof(*xudc), GFP_ATOMIC); + xudc = devm_kzalloc(&pdev->dev, sizeof(*xudc), GFP_KERNEL); if (!xudc) return -ENOMEM; -- cgit From de21e7289b7abfe4b0a79a8a8c9d3429fd1d7263 Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Thu, 6 Aug 2020 18:04:15 +0200 Subject: usb: gadget: tegra-xudc: Use consistent spelling and formatting Make sure to use consistent spelling and formatting in error messages. Signed-off-by: Thierry Reding Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/tegra-xudc.c | 36 ++++++++++++++++++------------------ 1 file changed, 18 insertions(+), 18 deletions(-) (limited to 'drivers/usb/gadget') diff --git a/drivers/usb/gadget/udc/tegra-xudc.c b/drivers/usb/gadget/udc/tegra-xudc.c index 9aa4815c1c59..a59d6a9e8ef7 100644 --- a/drivers/usb/gadget/udc/tegra-xudc.c +++ b/drivers/usb/gadget/udc/tegra-xudc.c @@ -705,11 +705,11 @@ static void tegra_xudc_device_mode_on(struct tegra_xudc *xudc) err = phy_power_on(xudc->curr_utmi_phy); if (err < 0) - dev_err(xudc->dev, "utmi power on failed %d\n", err); + dev_err(xudc->dev, "UTMI power on failed: %d\n", err); err = phy_power_on(xudc->curr_usb3_phy); if (err < 0) - dev_err(xudc->dev, "usb3 phy power on failed %d\n", err); + dev_err(xudc->dev, "USB3 PHY power on failed: %d\n", err); dev_dbg(xudc->dev, "device mode on\n"); @@ -759,11 +759,11 @@ static void tegra_xudc_device_mode_off(struct tegra_xudc *xudc) err = phy_power_off(xudc->curr_utmi_phy); if (err < 0) - dev_err(xudc->dev, "utmi_phy power off failed %d\n", err); + dev_err(xudc->dev, "UTMI PHY power off failed: %d\n", err); err = phy_power_off(xudc->curr_usb3_phy); if (err < 0) - dev_err(xudc->dev, "usb3_phy power off failed %d\n", err); + dev_err(xudc->dev, "USB3 PHY power off failed: %d\n", err); pm_runtime_put(xudc->dev); } @@ -1539,7 +1539,7 @@ static int __tegra_xudc_ep_set_halt(struct tegra_xudc_ep *ep, bool halt) return -EINVAL; if (usb_endpoint_xfer_isoc(ep->desc)) { - dev_err(xudc->dev, "can't halt isoc EP\n"); + dev_err(xudc->dev, "can't halt isochronous EP\n"); return -ENOTSUPP; } @@ -1788,7 +1788,7 @@ static int __tegra_xudc_ep_enable(struct tegra_xudc_ep *ep, if (usb_endpoint_xfer_isoc(desc)) { if (xudc->nr_isoch_eps > XUDC_MAX_ISOCH_EPS) { - dev_err(xudc->dev, "too many isoch endpoints\n"); + dev_err(xudc->dev, "too many isochronous endpoints\n"); return -EBUSY; } xudc->nr_isoch_eps++; @@ -3509,7 +3509,7 @@ static int tegra_xudc_phy_get(struct tegra_xudc *xudc) if (IS_ERR(xudc->utmi_phy[i])) { err = PTR_ERR(xudc->utmi_phy[i]); if (err != -EPROBE_DEFER) - dev_err(xudc->dev, "failed to get usb2-%d phy: %d\n", + dev_err(xudc->dev, "failed to get usb2-%d PHY: %d\n", i, err); goto clean_up; @@ -3539,12 +3539,12 @@ static int tegra_xudc_phy_get(struct tegra_xudc *xudc) if (IS_ERR(xudc->usb3_phy[i])) { err = PTR_ERR(xudc->usb3_phy[i]); if (err != -EPROBE_DEFER) - dev_err(xudc->dev, "failed to get usb3-%d phy: %d\n", + dev_err(xudc->dev, "failed to get usb3-%d PHY: %d\n", usb3, err); goto clean_up; } else if (xudc->usb3_phy[i]) - dev_dbg(xudc->dev, "usb3_phy-%d registered", usb3); + dev_dbg(xudc->dev, "usb3-%d PHY registered", usb3); } return err; @@ -3577,13 +3577,13 @@ static int tegra_xudc_phy_init(struct tegra_xudc *xudc) for (i = 0; i < xudc->soc->num_phys; i++) { err = phy_init(xudc->utmi_phy[i]); if (err < 0) { - dev_err(xudc->dev, "utmi phy init failed: %d\n", err); + dev_err(xudc->dev, "UTMI PHY #%u initialization failed: %d\n", i, err); goto exit_phy; } err = phy_init(xudc->usb3_phy[i]); if (err < 0) { - dev_err(xudc->dev, "usb3 phy init failed: %d\n", err); + dev_err(xudc->dev, "USB3 PHY #%u initialization failed: %d\n", i, err); goto exit_phy; } } @@ -3696,14 +3696,14 @@ static int tegra_xudc_powerdomain_init(struct tegra_xudc *xudc) "dev"); if (IS_ERR(xudc->genpd_dev_device)) { err = PTR_ERR(xudc->genpd_dev_device); - dev_err(dev, "failed to get dev pm-domain: %d\n", err); + dev_err(dev, "failed to get device power domain: %d\n", err); return err; } xudc->genpd_dev_ss = dev_pm_domain_attach_by_name(dev, "ss"); if (IS_ERR(xudc->genpd_dev_ss)) { err = PTR_ERR(xudc->genpd_dev_ss); - dev_err(dev, "failed to get superspeed pm-domain: %d\n", err); + dev_err(dev, "failed to get SuperSpeed power domain: %d\n", err); return err; } @@ -3711,7 +3711,7 @@ static int tegra_xudc_powerdomain_init(struct tegra_xudc *xudc) DL_FLAG_PM_RUNTIME | DL_FLAG_STATELESS); if (!xudc->genpd_dl_device) { - dev_err(dev, "adding usb device device link failed!\n"); + dev_err(dev, "failed to add USB device link\n"); return -ENODEV; } @@ -3719,7 +3719,7 @@ static int tegra_xudc_powerdomain_init(struct tegra_xudc *xudc) DL_FLAG_PM_RUNTIME | DL_FLAG_STATELESS); if (!xudc->genpd_dl_ss) { - dev_err(dev, "adding superspeed device link failed!\n"); + dev_err(dev, "failed to add SuperSpeed device link\n"); return -ENODEV; } @@ -3783,7 +3783,7 @@ static int tegra_xudc_probe(struct platform_device *pdev) err = devm_clk_bulk_get(&pdev->dev, xudc->soc->num_clks, xudc->clks); if (err) { - dev_err(xudc->dev, "failed to request clks %d\n", err); + dev_err(xudc->dev, "failed to request clocks: %d\n", err); return err; } @@ -3798,7 +3798,7 @@ static int tegra_xudc_probe(struct platform_device *pdev) err = devm_regulator_bulk_get(&pdev->dev, xudc->soc->num_supplies, xudc->supplies); if (err) { - dev_err(xudc->dev, "failed to request regulators %d\n", err); + dev_err(xudc->dev, "failed to request regulators: %d\n", err); return err; } @@ -3808,7 +3808,7 @@ static int tegra_xudc_probe(struct platform_device *pdev) err = regulator_bulk_enable(xudc->soc->num_supplies, xudc->supplies); if (err) { - dev_err(xudc->dev, "failed to enable regulators %d\n", err); + dev_err(xudc->dev, "failed to enable regulators: %d\n", err); goto put_padctl; } -- cgit From 2003a419c7f3b5990433aa85f3804bb4ccacbba9 Mon Sep 17 00:00:00 2001 From: Colin Ian King Date: Wed, 5 Aug 2020 14:14:58 +0100 Subject: usb: gadget: fix spelling mistake "Dectected" -> "Detected" There is a spelling mistake in a literal string. Fix it. Signed-off-by: Colin Ian King Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/fsl_udc_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb/gadget') diff --git a/drivers/usb/gadget/udc/fsl_udc_core.c b/drivers/usb/gadget/udc/fsl_udc_core.c index 3e98740b8cfc..de528e3b0662 100644 --- a/drivers/usb/gadget/udc/fsl_udc_core.c +++ b/drivers/usb/gadget/udc/fsl_udc_core.c @@ -2061,7 +2061,7 @@ static int fsl_proc_read(struct seq_file *m, void *v) "Sleep Enable: %d SOF Received Enable: %d " "Reset Enable: %d\n" "System Error Enable: %d " - "Port Change Dectected Enable: %d\n" + "Port Change Detected Enable: %d\n" "USB Error Intr Enable: %d USB Intr Enable: %d\n\n", (tmp_reg & USB_INTR_DEVICE_SUSPEND) ? 1 : 0, (tmp_reg & USB_INTR_SOF_EN) ? 1 : 0, -- cgit From 230c1aa370890dcd87772e775c19fa603ca5ac11 Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Thu, 6 Aug 2020 18:04:16 +0200 Subject: usb: gadget: tegra-xudc: Properly align parameters Align parameters on subsequent lines with the parameters on the first line for consistency. Signed-off-by: Thierry Reding Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/tegra-xudc.c | 18 ++++++++---------- 1 file changed, 8 insertions(+), 10 deletions(-) (limited to 'drivers/usb/gadget') diff --git a/drivers/usb/gadget/udc/tegra-xudc.c b/drivers/usb/gadget/udc/tegra-xudc.c index a59d6a9e8ef7..606b70c2dec8 100644 --- a/drivers/usb/gadget/udc/tegra-xudc.c +++ b/drivers/usb/gadget/udc/tegra-xudc.c @@ -3692,8 +3692,7 @@ static int tegra_xudc_powerdomain_init(struct tegra_xudc *xudc) struct device *dev = xudc->dev; int err; - xudc->genpd_dev_device = dev_pm_domain_attach_by_name(dev, - "dev"); + xudc->genpd_dev_device = dev_pm_domain_attach_by_name(dev, "dev"); if (IS_ERR(xudc->genpd_dev_device)) { err = PTR_ERR(xudc->genpd_dev_device); dev_err(dev, "failed to get device power domain: %d\n", err); @@ -3708,16 +3707,16 @@ static int tegra_xudc_powerdomain_init(struct tegra_xudc *xudc) } xudc->genpd_dl_device = device_link_add(dev, xudc->genpd_dev_device, - DL_FLAG_PM_RUNTIME | - DL_FLAG_STATELESS); + DL_FLAG_PM_RUNTIME | + DL_FLAG_STATELESS); if (!xudc->genpd_dl_device) { dev_err(dev, "failed to add USB device link\n"); return -ENODEV; } xudc->genpd_dl_ss = device_link_add(dev, xudc->genpd_dev_ss, - DL_FLAG_PM_RUNTIME | - DL_FLAG_STATELESS); + DL_FLAG_PM_RUNTIME | + DL_FLAG_STATELESS); if (!xudc->genpd_dl_ss) { dev_err(dev, "failed to add SuperSpeed device link\n"); return -ENODEV; @@ -3772,16 +3771,15 @@ static int tegra_xudc_probe(struct platform_device *pdev) return err; } - xudc->clks = devm_kcalloc(&pdev->dev, xudc->soc->num_clks, - sizeof(*xudc->clks), GFP_KERNEL); + xudc->clks = devm_kcalloc(&pdev->dev, xudc->soc->num_clks, sizeof(*xudc->clks), + GFP_KERNEL); if (!xudc->clks) return -ENOMEM; for (i = 0; i < xudc->soc->num_clks; i++) xudc->clks[i].id = xudc->soc->clock_names[i]; - err = devm_clk_bulk_get(&pdev->dev, xudc->soc->num_clks, - xudc->clks); + err = devm_clk_bulk_get(&pdev->dev, xudc->soc->num_clks, xudc->clks); if (err) { dev_err(xudc->dev, "failed to request clocks: %d\n", err); return err; -- cgit From a50758bb6c740954c81aecb5a15df8e0c8da6250 Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Thu, 6 Aug 2020 18:04:17 +0200 Subject: usb: gadget: tegra-xudc: Do not print errors on probe deferral Probe deferral is an expected condition and can happen multiple times during boot. Make sure not to output an error message in that case because they are not useful. Signed-off-by: Thierry Reding Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/tegra-xudc.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) (limited to 'drivers/usb/gadget') diff --git a/drivers/usb/gadget/udc/tegra-xudc.c b/drivers/usb/gadget/udc/tegra-xudc.c index 606b70c2dec8..580bef8eb4cb 100644 --- a/drivers/usb/gadget/udc/tegra-xudc.c +++ b/drivers/usb/gadget/udc/tegra-xudc.c @@ -3781,7 +3781,9 @@ static int tegra_xudc_probe(struct platform_device *pdev) err = devm_clk_bulk_get(&pdev->dev, xudc->soc->num_clks, xudc->clks); if (err) { - dev_err(xudc->dev, "failed to request clocks: %d\n", err); + if (err != -EPROBE_DEFER) + dev_err(xudc->dev, "failed to request clocks: %d\n", err); + return err; } @@ -3796,7 +3798,9 @@ static int tegra_xudc_probe(struct platform_device *pdev) err = devm_regulator_bulk_get(&pdev->dev, xudc->soc->num_supplies, xudc->supplies); if (err) { - dev_err(xudc->dev, "failed to request regulators: %d\n", err); + if (err != -EPROBE_DEFER) + dev_err(xudc->dev, "failed to request regulators: %d\n", err); + return err; } -- cgit From 5b35dd1a5a666329192a9616ec21098591259058 Mon Sep 17 00:00:00 2001 From: Chunfeng Yun Date: Mon, 14 Sep 2020 14:17:30 +0800 Subject: usb: gadget: bcm63xx_udc: fix up the error of undeclared usb_debug_root Fix up the build error caused by undeclared usb_debug_root Cc: stable Fixes: a66ada4f241c ("usb: gadget: bcm63xx_udc: create debugfs directory under usb root") Reported-by: kernel test robot Signed-off-by: Chunfeng Yun Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/bcm63xx_udc.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/usb/gadget') diff --git a/drivers/usb/gadget/udc/bcm63xx_udc.c b/drivers/usb/gadget/udc/bcm63xx_udc.c index feaec00a3c16..9cd4a70ccdd6 100644 --- a/drivers/usb/gadget/udc/bcm63xx_udc.c +++ b/drivers/usb/gadget/udc/bcm63xx_udc.c @@ -26,6 +26,7 @@ #include #include #include +#include #include #include #include -- cgit From f0c485663d5976acb1cb490981a4763a215df75e Mon Sep 17 00:00:00 2001 From: Zqiang Date: Sun, 27 Sep 2020 16:01:16 +0800 Subject: usb: gadget: uvc: Fix the wrong v4l2_device_unregister call If an error occurred before calling the 'v4l2_device_register' func, and then goto error, but no need to call 'v4l2_device_unregister' func. Signed-off-by: Zqiang Signed-off-by: Felipe Balbi --- drivers/usb/gadget/function/f_uvc.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'drivers/usb/gadget') diff --git a/drivers/usb/gadget/function/f_uvc.c b/drivers/usb/gadget/function/f_uvc.c index 0b9712616455..44b4352a2676 100644 --- a/drivers/usb/gadget/function/f_uvc.c +++ b/drivers/usb/gadget/function/f_uvc.c @@ -740,20 +740,20 @@ uvc_function_bind(struct usb_configuration *c, struct usb_function *f) /* Initialise video. */ ret = uvcg_video_init(&uvc->video, uvc); if (ret < 0) - goto error; + goto v4l2_error; /* Register a V4L2 device. */ ret = uvc_register_video(uvc); if (ret < 0) { uvcg_err(f, "failed to register video device\n"); - goto error; + goto v4l2_error; } return 0; -error: +v4l2_error: v4l2_device_unregister(&uvc->v4l2_dev); - +error: if (uvc->control_req) usb_ep_free_request(cdev->gadget->ep0, uvc->control_req); kfree(uvc->control_buf); -- cgit From 2a87445af23ec7db311ff81f141626e72a2bbd86 Mon Sep 17 00:00:00 2001 From: Tang Bin Date: Sun, 27 Sep 2020 21:53:04 +0800 Subject: usb: bdc: Fix unused assignment in bdc_probe() Delete unused initialized value of 'ret', because it will be assigned by the function clk_prepare_enable(). Signed-off-by: Zhang Shengju Signed-off-by: Tang Bin Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/bdc/bdc_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb/gadget') diff --git a/drivers/usb/gadget/udc/bdc/bdc_core.c b/drivers/usb/gadget/udc/bdc/bdc_core.c index 5ff36525044e..96e1fca63b63 100644 --- a/drivers/usb/gadget/udc/bdc/bdc_core.c +++ b/drivers/usb/gadget/udc/bdc/bdc_core.c @@ -484,7 +484,7 @@ static void bdc_phy_exit(struct bdc *bdc) static int bdc_probe(struct platform_device *pdev) { struct bdc *bdc; - int ret = -ENOMEM; + int ret; int irq; u32 temp; struct device *dev = &pdev->dev; -- cgit From a73abc28ce67989ebf881f33961d9dec9c7522b9 Mon Sep 17 00:00:00 2001 From: Tang Bin Date: Mon, 28 Sep 2020 20:00:51 +0800 Subject: usb: bdc: remove duplicated error message in case devm_platform_ioremap_resource() fails, that function already prints a relevant error message which renders the driver's dev_err() redundant. Let's remove the unnecessary message and, while at that, also make sure to pass along the error value returned by devm_platform_ioremap_resource() instead of always returning -ENOMEM. Signed-off-by: Zhang Shengju Signed-off-by: Tang Bin [balbi@kernel.org : improved commit log] Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/bdc/bdc_core.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) (limited to 'drivers/usb/gadget') diff --git a/drivers/usb/gadget/udc/bdc/bdc_core.c b/drivers/usb/gadget/udc/bdc/bdc_core.c index 96e1fca63b63..0bef6b3f049b 100644 --- a/drivers/usb/gadget/udc/bdc/bdc_core.c +++ b/drivers/usb/gadget/udc/bdc/bdc_core.c @@ -510,10 +510,9 @@ static int bdc_probe(struct platform_device *pdev) bdc->clk = clk; bdc->regs = devm_platform_ioremap_resource(pdev, 0); - if (IS_ERR(bdc->regs)) { - dev_err(dev, "ioremap error\n"); - return -ENOMEM; - } + if (IS_ERR(bdc->regs)) + return PTR_ERR(bdc->regs); + irq = platform_get_irq(pdev, 0); if (irq < 0) return irq; -- cgit