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2016-03-08KVM: PPC: Book3S HV: Sanitize special-purpose register values on guest exitPaul Mackerras
Thomas Huth discovered that a guest could cause a hard hang of a host CPU by setting the Instruction Authority Mask Register (IAMR) to a suitable value. It turns out that this is because when the code was added to context-switch the new special-purpose registers (SPRs) that were added in POWER8, we forgot to add code to ensure that they were restored to a sane value on guest exit. This adds code to set those registers where a bad value could compromise the execution of the host kernel to a suitable neutral value on guest exit. Cc: stable@vger.kernel.org # v3.14+ Fixes: b005255e12a3 Reported-by: Thomas Huth <thuth@redhat.com> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2016-03-07be2iscsi: Remove unnecessary synchronize_irq() before free_irq()Lars-Peter Clausen
Calling synchronize_irq() right before free_irq() is quite useless. On one hand the IRQ can easily fire again before free_irq() is entered, on the other hand free_irq() itself calls synchronize_irq() internally (in a race condition free way), before any state associated with the IRQ is freed. Patch was generated using the following semantic patch: // <smpl> @@ expression irq; @@ -synchronize_irq(irq); free_irq(irq, ...); // </smpl> Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Reviewed-by: Jitendra Bhivare <jitendra.bhivare@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-03-08drm/i2c: tda998x: Choose between atomic or non atomic dpms helperJyri Sarha
Choose between atomic or non atomic connector dpms helper. If tda998x is connected to a drm driver that does not support atomic modeset calling drm_atomic_helper_connector_dpms() causes a crash when the connectors atomic state is not initialized. The patch implements a driver specific connector dpms helper that calls drm_atomic_helper_connector_dpms() if driver supports DRIVER_ATOMIC and otherwise it calls the legacy drm_helper_connector_dpms(). Fixes commit 9736e988d328 ("drm/i2c: tda998x: Add support for atomic modesetting"). Signed-off-by: Jyri Sarha <jsarha@ti.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2016-03-08drm/vmwgfx: Add back ->detect() and ->fill_modes()Thierry Reding
This partially reverts commit d56f57ac969c ("drm/gma500: Move to private save/restore hooks") which removed these lines by mistake. Reported-by: Sebastian Herbszt <herbszt@gmx.de> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Thierry Reding <treding@nvidia.com> Tested-by: Thomas Hellstrom <thellstrom@vmware.com> Tested-by: Sebastian Herbszt <herbszt@gmx.de> Signed-off-by: Dave Airlie <airlied@redhat.com>
2016-03-07serial: 8250: describe CONFIG_SERIAL_8250_RSAMaciej S. Szmigiero
CONFIG_SERIAL_8250_RSA has waited for a long time to have meaningful help text so let's finally describe what this option actually does. Signed-off-by: Maciej S. Szmigiero <mail@maciej.szmigiero.name> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07serial: samsung: optimize UART rx fifo access routineYoungmin Nam
This patch optimizes UART rx fifo access routine by reading UART SFR when necessary. At first, the "fifocnt" variable will be initialized as Rx FIFO count. So we don't need to access UFSTAT(FIFO status) register every time to check FIFO count because we know that count with "fifocnt". After all data were read out from Rx FIFO, the "fifocnt" will be set as 0. Lastly, UFSTAT will be accessed again to check whether the data remains by any chance. Signed-off-by: Youngmin Nam <ym0914@gmail.com> Reviewed-by: Jung-Ick Guack <ji.guack@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07serial: pl011: add mark/space parity supportEd Spiridonov
PL011 UART has hardware mark/space parity ability, this trivial patch adds support for it. Tested on Raspberry Pi v1, v2 (BCM2835 and BCM2836) Signed-off-by: Ed Spiridonov <edo.rus@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07serial: sa1100: make sa1100_register_uart_fns a functionArnd Bergmann
Calling sa1100_register_uart_fns() leaves the port structure unused when CONFIG_SERIAL_SA1100 is disabled, and we get a compiler warning about that: arch/arm/mach-sa1100/badge4.c:317:31: warning: 'badge4_port_fns' defined but not used [-Wunused-variable] static struct sa1100_port_fns badge4_port_fns __initdata = { This turns the two empty macros into empty inline functions, which has the same effect, but lets the compiler know that the variables are intentionally unused. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07tty: serial: 8250: add MOXA Smartio MUE boards supportMathieu OTHACEHE
Add support for : - CP-102E: 2 ports RS232 PCIE card - CP-102EL: 2 ports RS232 PCIE card - CP-132EL: 2 ports RS422/485 PCIE card - CP-114EL: 4 ports RS232/422/485 PCIE card - CP-104EL-A: 4 ports RS232 PCIE card - CP-168EL-A: 8 ports RS232 PCIE card - CP-118EL-A: 8 ports RS232/422/485 PCIE card - CP-118E-A: 8 ports RS422/485 PCIE card - CP-138E-A: 8 ports RS422/485 PCIE card - CP-134EL-A: 4 ports RS422/485 PCIE card - CP-116E-A (A): 8 ports RS232/422/485 PCIE card - CP-116E-A (B): 8 ports RS232/422/485 PCIE card This patch is based on information extracted from vendor mxupcie driver available on MOXA website. I was able to test it on a CP-168EL-A on PC. Signed-off-by: Mathieu OTHACEHE <m.othacehe@gmail.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07serial: 8250: convert drivers to use up_to_u8250p()Andy Shevchenko
up_to_u8250p() casts struct uart_port * to struct uart_8250_port *. Update code to use it instead of open coded variant. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07serial: 8250/mediatek: fix building with SERIAL_8250=mArnd Bergmann
The Mediatek 8250 driver has a 'bool' Kconfig symbol, but that breaks when SERIAL_8250 is a loadable module: drivers/tty/built-in.o: In function `mtk8250_set_termios': :(.text+0x1bee8): undefined reference to `serial8250_do_set_termios' :(.text+0x1bf10): undefined reference to `uart_get_baud_rate' :(.text+0x1c09c): undefined reference to `uart_get_divisor' drivers/tty/built-in.o: In function `mtk8250_do_pm': :(.text+0x1c0d0): undefined reference to `serial8250_do_pm' drivers/tty/built-in.o: In function `mtk8250_probe': :(.text+0x1c2e4): undefined reference to `serial8250_register_8250_port' serial/8250/8250_mtk.c:287:242: error: data definition has no type or storage class [-Werror] serial/8250/8250_mtk.c:287:122: error: 'mtk8250_platform_driver_init' defined but not used [-Werror=unused-function] This changes the symbol to a 'tristate', so the dependency on SERIAL_8250 also works when that is set to 'm'. To actually build the driver, we also need to include <linux/module.h>. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Matthias Brugger <matthias.bgg@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07serial: 8250/ingenic: fix building with SERIAL_8250=mArnd Bergmann
The Ingenic 8250 driver has a 'bool' Kconfig symbol, but that breaks when SERIAL_8250 is a loadable module: drivers/tty/built-in.o: In function `ingenic_uart_probe': 8250_ingenic.c:(.text+0x1c1a0): undefined reference to `serial8250_register_8250_port' This changes the symbol to a 'tristate', plus a dependency on SERIAL_8250, which makes it work again. Unlike the other soc-specific backends, this one has no dependency on an architecture or a platform. I'm adding a dependency on MIPS || COMPILE_TEST as well here, to avoid showing the driver on architectures that are not interested in it. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07serial: 8250/uniphier: fix modular buildArnd Bergmann
The newly added uniphier serial port driver fails to build as a loadable module when the base 8250 driver is built-in and its console support enabled: ERROR: "early_serial8250_setup" [drivers/tty/serial/8250/8250_uniphier.ko] undefined! This changes the driver to only provide the early console support if it is built-in itself as well. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07Revert "drivers/tty/serial: make 8250/8250_ingenic.c explicitly non-modular"Arnd Bergmann
This reverts commit cafe1ac64023 ("drivers/tty: make serial 8250_ingenic.c explicitly non-modular"), which attempted to remove dead code but did not have the desired effect when the main 8250 driver was a loadable module itself. This would normally result in a link error, but as the entire drivers/tty/serial/8250/ directory is only entered when CONFIG_SERIAL_8250 is set, we never notice that the driver does not get built in this configuration. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07Revert "drivers/tty/serial: make 8250/8250_mtk.c explicitly non-modular"Arnd Bergmann
This reverts commit d72d391c126e ("drivers/tty/serial: make 8250/8250_mtk.c explicitly non-modular"), which intended to remove dead code but did not have the desired effect when the main 8250 driver was a module itself. This would normally result in a link error, but as the entire drivers/tty/serial/8250/ directory is only entered when CONFIG_SERIAL_8250 is set, we never notice that the driver does not get built in this configuration. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Matthias Brugger <matthias.bgg@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07serial: mvebu-uart: initial support for Armada-3700 serial portWilson Ding
Armada-3700's uart is a simple serial port, which doesn't support. Configuring the modem control lines. The uart port has a 32 bytes Tx FIFO and a 64 bytes Rx FIFO The uart driver implements the uart core operations. It also support the system (early) console based on Armada-3700's serial port. Known Issue: The uart driver currently doesn't support clock programming, which means the baud-rate stays with the default value configured by the bootloader at boot time [gregory.clement@free-electrons.com: Rewrite many part which are too long to enumerate] Signed-off-by: Wilson Ding <dingwei@marvell.com> Signed-off-by: Nadav Haklai <nadavh@marvell.com> Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07serial: mctrl_gpio: Add missing module licenseRomain Izard
As the mctrl_gpio driver can be built as a module, it needs to have its license specified with MODULE_LICENSE. Otherwise, it cannot access required symbols exported through EXPORT_SYMBOL_GPL. Signed-off-by: Romain Izard <romain.izard.pro@gmail.com> Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07serial: ifx6x60: avoid uninitialized variable useArnd Bergmann
gcc warns about a potential use of an uninitialized variable in this driver: drivers/tty/serial/ifx6x60.c: In function 'ifx_spi_complete': drivers/tty/serial/ifx6x60.c:713:6: warning: 'more' may be used uninitialized in this function [-Wmaybe-uninitialized] if (more || ifx_dev->spi_more || queue_length > 0 || Unlike a lot of other such warnings, this one is correct and describes an actual problem in the handling of the "IFX_SPI_HEADER_F" result code. This appears to be a result from a restructuring of the driver that dates back to before it was merged in the kernel, so it's impossible to know where it went wrong. I also don't know what that result code means, so I have no idea if setting 'more' to zero is the correct solution, but at least it makes the behavior reproducible rather than depending on whatever happens to be on the kernel stack. This patch initializes the 'more' variable to zero in each of the three code paths that could result in undefined behavior before, which is more explicit than initializing it at the start of the function. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07tty/serial: at91: fix bad offset for UART timeout registerLudovic Desroches
With SAMA5D2, the UART has hw timeout but the offset of the register to define this value is not the same as the one for USART. When using the new UART, the value of this register was 0 so we never get timeout irqs. It involves that when using DMA, we were stuck until the execution of the dma callback which happens when a buffer is full (so after receiving 2048 bytes). Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07tty/serial: at91: restore dynamic driver bindingRomain Izard
In commit c39dfebc7798956fd2140ae6321786ff35da30c3, the modular support code for atmel_serial was removed, as the driver cannot be built as a module. Because no use case was proposed, the dynamic driver binding support was removed as well. The atmel_serial driver can manage up to 7 serial controllers, which are multiplexed with other functions. For example, in the Atmel SAMA5D2, the Flexcom controllers can work as USART, SPI or I2C controllers, and on all Atmel devices serial lines can be reconfigured as GPIOs. My use case uses GPIOs to transfer a firmware update using a custom protocol on the lines used as a serial port during the normal life of the device. If it is not possible to unbind the atmel_serial driver, the GPIO lines remain reserved and prevent this case from working. This patch reinstates the atmel_serial_remove function, and fixes it as it failed to clear the "clk" field on removal, triggering an oops when a device was bound again after being unbound. Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Romain Izard <romain.izard.pro@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07serial: 8250: Add hardware dependency to RT288X optionJean Delvare
Kconfig option SERIAL_8250_RT288X seems to be only relevant on MIPS platforms, so do not present it on other architectures, unless build-testing. Signed-off-by: Jean Delvare <jdelvare@suse.de> Cc: Mans Rullgard <mans@mansr.com> Cc: Jiri Slaby <jslaby@suse.com> Acked-by: John Crispin <blogic@openwrt.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07TTY, devpts: document pty count limitingKonstantin Khlebnikov
Logic has been changed in kernel 3.4 by commit e9aba5158a80 ("tty: rework pty count limiting") but still not documented. Sysctl kernel.pty.max works as global limit, kernel.pty.reserve ptys are reserved for initial devpts instance (mounted without "newinstance"). Per-instance limit also could be set by mount option "max=%d". Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07tty: goldfish: support platform_device with id -1Greg Hackmann
When the platform bus sets the platform_device id to -1 (PLATFORM_DEVID_NONE), use an incrementing counter for the TTY index instead Signed-off-by: Greg Hackmann <ghackmann@google.com> Signed-off-by: Jin Qian <jinqian@android.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07drivers: tty: goldfish: Add device tree bindingsMiodrag Dinic
Enable support for registering this device using the device tree. Device tree node example for registering Goldfish TTY device : goldfish_tty@1f004000 { interrupts = <0xc>; reg = <0x1f004000 0x1000>; compatible = "google,goldfish-tty"; }; Signed-off-by: Miodrag Dinic <miodrag.dinic@imgtec.com> Signed-off-by: Jin Qian <jinqian@android.com> Signed-off-by: Alan <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07serial-uartlite: Configure for rising edge irq trigger.Maarten Brock
This device generates a short rising pulse on the interrupt request line. Signed-off-by: Maarten Brock <m.brock@vanmierlo.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07serial-uartlite: Spinlock inside the loop.Maarten Brock
Better to hold the spinlock as short as possible. Signed-off-by: Maarten Brock <m.brock@vanmierlo.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07serial-uartlite: Constify uartlite_be/uartlite_leMaarten Brock
Made uartlite_be and uartlite_le constants. Signed-off-by: Maarten Brock <m.brock@vanmierlo.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07serial-uartlite: Enlarge maximum nr of devices to 16.Maarten Brock
This device is ideal to use when you need a lot of uarts in your FPGA. Try not to force all those users to patch their kernel. Signed-off-by: Maarten Brock <m.brock@vanmierlo.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07serial: 8250_pci: all known Braswell ports are 1 channelAndy Shevchenko
There is no need to have channel offset defined since all BayTrail and Braswell ports are 1 channel. Remove unneeded definition. While here, remove comment which has no value. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07serial: 8250_pci: convert to pcim_*() APIAndy Shevchenko
The managed API provides a better approach to help with acquiring and releasing resources. Besides that error handling becomes simpler. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07serial: 8250_dw: remove leftover definitionsAndy Shevchenko
The clocks are managed through clk-fractional-divider.c module, and thus CLK framework takes care about it. Remove letfovers from this driver. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07serial: 8250_dw: remove redundant 'else' keywordAndy Shevchenko
When the main branch contains return statement the 'else' keyword is not needed. Remove it here. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07serial: xuartps: Enable OF earlycon supportMichal Simek
Support early console setup via DT for all listed compatible strings. Remove EARLYCON_DECLARE which was done by: "Use common framework for earlycon declarations" (sha1: 2eaa790989e03900298ad24f77f1086dbbc1aebd) when OF_EARLYCON_DECLARE is defined. Signed-off-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07tty: sh-sci: Use ARCH_RENESASSimon Horman
Make use of ARCH_RENESAS in place of ARCH_SHMOBILE. This is part of an ongoing process to migrate from ARCH_SHMOBILE to ARCH_RENESAS the motivation for which being that RENESAS seems to be a more appropriate name than SHMOBILE for the majority of Renesas ARM based SoCs. Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07serial: sh-sci: Remove redundant instances of EARLYCON_DECLARE()Geert Uytterhoeven
As of commit 2eaa790989e03900 ("earlycon: Use common framework for earlycon declarations") it is no longer needer to specify both EARLYCON_DECLARE() and OF_EARLYCON_DECLARE(). Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07tty: amba-pl011: don't dereference NULL platform dataRobin Murphy
When only a TX DMA channel is specified in DT, pl011_dma_probe() falls back to looking for the optional RX channel in platform data. What it doesn't do is check whether that platform data actually exists... Add the missing check to avoid crashing the kernel. Signed-off-by: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07tty: serial: Use GFP_ATOMIC instead of GFP_KERNEL in serial8250_em485_init()Matwey V. Kornilov
serial8250_em485_init() is supposed to be protected with p->port.lock spinlock. This may lead to issues when kmalloc sleeps, so it is better to use GFP_ATOMIC in this spinlocked context. Fixes: e490c9144cfa ("tty: Add software emulated RS485 support for 8250") Reported-by: Ильяс Гасанов <torso.nafi@gmail.com> Signed-off-by: Matwey V. Kornilov <matwey@sai.msu.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07tty: serial: 8250: Cleanup p->em485 in serial8250_unregister_portMatwey V. Kornilov
Formally, currently there is no memory leak, but if serial8250_ports[line] is reused with other 8250 driver, then em485 will be already activated and it will cause issues. Fixes: e490c9144cfa ("tty: Add software emulated RS485 support for 8250") Signed-off-by: Matwey V. Kornilov <matwey@sai.msu.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07tty: audit: remove unused variableSudip Mukherjee
While building with W=1 we were getting build warning: drivers/tty/tty_audit.c:149:16: warning: variable 'sessionid' set but not used The local variable sessionid was only assigned the value of current->sessionid but was never reused. On further inspection it turned out that there is no need of audit_get_loginuid() also. Signed-off-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk> Reviewed-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07Revert "sc16is7xx: implemented get_mctrl"Greg Kroah-Hartman
This reverts commit a3f0b77f36ca5c5871fb8daf7e66fa409abe1ed5. Maarten writes: It appears to be wrong and I don't have a good idea how to fix it yet. Cc: Maarten Brock <m.brock@vanmierlo.com> Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
2016-03-07Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds
Pull networking fixes from David Miller: 1) Fix ordering of WEXT netlink messages so we don't see a newlink after a dellink, from Johannes Berg. 2) Out of bounds access in minstrel_ht_set_best_prob_rage, from Konstantin Khlebnikov. 3) Paging buffer memory leak in iwlwifi, from Matti Gottlieb. 4) Wrong units used to set initial TCP rto from cached metrics, also from Konstantin Khlebnikov. 5) Fix stale IP options data in the SKB control block from leaking through layers of encapsulation, from Bernie Harris. 6) Zero padding len miscalculated in bnxt_en, from Michael Chan. 7) Only CHECKSUM_PARTIAL packets should be passed down through GSO, fix from Hannes Frederic Sowa. 8) Fix suspend/resume with JME networking devices, from Diego Violat and Guo-Fu Tseng. 9) Checksums not validated properly in bridge multicast support due to the placement of the SKB header pointers at the time of the check, fix from Álvaro Fernández Rojas. 10) Fix hang/tiemout with r8169 if a stats fetch is done while the device is runtime suspended. From Chun-Hao Lin. 11) The forwarding database netlink dump facilities don't track the state of the dump properly, resulting in skipped/missed entries. From Minoura Makoto. 12) Fix regression from a recent 3c59x bug fix, from Neil Horman. 13) Fix list corruption in bna driver, from Ivan Vecera. 14) Big endian machines crash on vlan add in bnx2x, fix from Michal Schmidt. 15) Ethtool RSS configuration not propagated properly in mlx5 driver, from Tariq Toukan. 16) Fix regression in PHY probing in stmmac driver, from Gabriel Fernandez. 17) Fix SKB tailroom calculation in igmp/mld code, from Benjamin Poirier. 18) A past change to skip empty routing headers in ipv6 extention header parsing accidently caused fragment headers to not be matched any longer. Fix from Florian Westphal. 19) eTSEC-106 erratum needs to be applied to more gianfar chips, from Atsushi Nemoto. 20) Fix netdev reference after free via workqueues in usb networking drivers, from Oliver Neukum and Bjørn Mork. 21) mdio->irq is now an array rather than a pointer to dynamic memory, but several drivers were still trying to free it :-/ Fixes from Colin Ian King. 22) act_ipt iptables action forgets to set the family field, thus LOG netfilter targets don't work with it. Fix from Phil Sutter. 23) SKB leak in ibmveth when skb_linearize() fails, from Thomas Falcon. 24) pskb_may_pull() cannot be called with interrupts disabled, fix code that tries to do this in vmxnet3 driver, from Neil Horman. 25) be2net driver leaks iomap'd memory on removal, fix from Douglas Miller. 26) Forgotton RTNL mutex unlock in ppp_create_interface() error paths, from Guillaume Nault. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (97 commits) ppp: release rtnl mutex when interface creation fails cdc_ncm: do not call usbnet_link_change from cdc_ncm_bind tcp: fix tcpi_segs_in after connection establishment net: hns: fix the bug about loopback jme: Fix device PM wakeup API usage jme: Do not enable NIC WoL functions on S0 udp6: fix UDP/IPv6 encap resubmit path be2net: Don't leak iomapped memory on removal. vmxnet3: avoid calling pskb_may_pull with interrupts disabled net: ethernet: Add missing MFD_SYSCON dependency on HAS_IOMEM ibmveth: check return of skb_linearize in ibmveth_start_xmit cdc_ncm: toggle altsetting to force reset before setup usbnet: cleanup after bind() in probe() mlxsw: pci: Correctly determine if descriptor queue is full mlxsw: spectrum: Always decrement bridge's ref count tipc: fix nullptr crash during subscription cancel net: eth: altera: do not free array priv->mdio->irq net/ethoc: do not free array priv->mdio->irq net: sched: fix act_ipt for LOG target asix: do not free array priv->mdio->irq ...
2016-03-07Merge branch 'overlayfs-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs Pull overlayfs fixes from Miklos Szeredi: "Overlayfs bug fixes. All marked as -stable material" * 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs: ovl: copy new uid/gid into overlayfs runtime inode ovl: ignore lower entries when checking purity of non-directory entries ovl: fix getcwd() failure after unsuccessful rmdir ovl: fix working on distributed fs as lower layer
2016-03-07Revert "drm/radeon: call hpd_irq_event on resume"Linus Torvalds
This reverts commit dbb17a21c131eca94eb31136eee9a7fe5aff00d9. It turns out that commit can cause problems for systems with multiple GPUs, and causes X to hang on at least a HP Pavilion dv7 with hybrid graphics. This got noticed originally in 4.4.4, where this patch had already gotten back-ported, but 4.5-rc7 was verified to have the same problem. Alexander Deucher says: "It looks like you have a muxed system so I suspect what's happening is that one of the display is being reported as connected for both the IGP and the dGPU and then the desktop environment gets confused or there some sort problem in the detect functions since the mux is not switched to the dGPU. I don't see an easy fix unless Dave has any ideas. I'd say just revert for now" Reported-by: Jörg-Volker Peetz <jvpeetz@web.de> Acked-by: Alexander Deucher <Alexander.Deucher@amd.com> Cc: Dave Airlie <airlied@gmail.com> Cc: stable@kernel.org # wherever dbb17a21c131 got back-ported Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-03-07ppp: release rtnl mutex when interface creation failsGuillaume Nault
Add missing rtnl_unlock() in the error path of ppp_create_interface(). Fixes: 58a89ecaca53 ("ppp: fix lockdep splat in ppp_dev_uninit()") Signed-off-by: Guillaume Nault <g.nault@alphalink.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-03-07cdc_ncm: do not call usbnet_link_change from cdc_ncm_bindBjørn Mork
usbnet_link_change will call schedule_work and should be avoided if bind is failing. Otherwise we will end up with scheduled work referring to a netdev which has gone away. Instead of making the call conditional, we can just defer it to usbnet_probe, using the driver_info flag made for this purpose. Fixes: 8a34b0ae8778 ("usbnet: cdc_ncm: apply usbnet_link_change") Reported-by: Andrey Konovalov <andreyknvl@gmail.com> Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Bjørn Mork <bjorn@mork.no> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-03-07tcp: fix tcpi_segs_in after connection establishmentEric Dumazet
If final packet (ACK) of 3WHS is lost, it appears we do not properly account the following incoming segment into tcpi_segs_in While we are at it, starts segs_in with one, to count the SYN packet. We do not yet count number of SYN we received for a request sock, we might add this someday. packetdrill script showing proper behavior after fix : // Tests tcpi_segs_in when 3rd packet (ACK) of 3WHS is lost 0.000 socket(..., SOCK_STREAM, IPPROTO_TCP) = 3 +0 setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0 +0 bind(3, ..., ...) = 0 +0 listen(3, 1) = 0 +0 < S 0:0(0) win 32792 <mss 1000,sackOK,nop,nop> +0 > S. 0:0(0) ack 1 <mss 1460,nop,nop,sackOK> +.020 < P. 1:1001(1000) ack 1 win 32792 +0 accept(3, ..., ...) = 4 +.000 %{ assert tcpi_segs_in == 2, 'tcpi_segs_in=%d' % tcpi_segs_in }% Fixes: 2efd055c53c06 ("tcp: add tcpi_segs_in and tcpi_segs_out to tcp_info") Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-03-07net: hns: fix the bug about loopbackyankejian
It will always be passed if the soc is tested the loopback cases. This patch will fix this bug. Signed-off-by: Kejian Yan <yankejian@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-03-07jme: Fix device PM wakeup API usageGuo-Fu Tseng
According to Documentation/power/devices.txt The driver should not use device_set_wakeup_enable() which is the policy for user to decide. Using device_init_wakeup() to initialize dev->power.should_wakeup and dev->power.can_wakeup on driver initialization. And use device_may_wakeup() on suspend to decide if WoL function should be enabled on NIC. Reported-by: Diego Viola <diego.viola@gmail.com> Signed-off-by: Guo-Fu Tseng <cooldavid@cooldavid.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-03-07jme: Do not enable NIC WoL functions on S0Guo-Fu Tseng
Otherwise it might be back on resume right after going to suspend in some hardware. Reported-by: Diego Viola <diego.viola@gmail.com> Signed-off-by: Guo-Fu Tseng <cooldavid@cooldavid.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-03-07PCI: Allow a NULL "parent" pointer in pci_bus_assign_domain_nr()Krzysztof =?utf-8?Q?Ha=C5=82asa?=
pci_create_root_bus() passes a "parent" pointer to pci_bus_assign_domain_nr(). When CONFIG_PCI_DOMAINS_GENERIC is defined, pci_bus_assign_domain_nr() dereferences that pointer. Many callers of pci_create_root_bus() supply a NULL "parent" pointer, which leads to a NULL pointer dereference error. 7c674700098c ("PCI: Move domain assignment from arm64 to generic code") moved the "parent" dereference from arm64 to generic code. Only arm64 used that code (because only arm64 defined CONFIG_PCI_DOMAINS_GENERIC), and it always supplied a valid "parent" pointer. Other arches supplied NULL "parent" pointers but didn't defined CONFIG_PCI_DOMAINS_GENERIC, so they used a no-op version of pci_bus_assign_domain_nr(). 8c7d14746abc ("ARM/PCI: Move to generic PCI domains") defined CONFIG_PCI_DOMAINS_GENERIC on ARM, and many ARM platforms use pci_common_init(), which supplies a NULL "parent" pointer. These platforms (cns3xxx, dove, footbridge, iop13xx, etc.) crash with a NULL pointer dereference like this while probing PCI: Unable to handle kernel NULL pointer dereference at virtual address 000000a4 PC is at pci_bus_assign_domain_nr+0x10/0x84 LR is at pci_create_root_bus+0x48/0x2e4 Kernel panic - not syncing: Attempted to kill init! [bhelgaas: changelog, add "Reported:" and "Fixes:" tags] Reported: http://forum.doozan.com/read.php?2,17868,22070,quote=1 Fixes: 8c7d14746abc ("ARM/PCI: Move to generic PCI domains") Fixes: 7c674700098c ("PCI: Move domain assignment from arm64 to generic code") Signed-off-by: Krzysztof Hałasa <khalasa@piap.pl> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> CC: stable@vger.kernel.org # v4.0+
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