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Linus Torvalds 1ee89c519a The clk fixes for 4.0-rc4 comprise three themes. First are the usual
driver fixes for new regressions since v3.19. Second are fixes to the
 common clock divider type caused by recent changes to how we round clock
 rates. This affects many clock drivers that use this common code.
 Finally there are fixes for drivers that improperly compared struct clk
 pointers (drivers must not deref these pointers). While some of these
 drivers have done this for a long time, this did not cause a problem
 until we started generating unique struct clk pointers for every
 consumer. A new function, clk_is_match was introduced to get these
 drivers working again and they are fixed up to no longer deref the
 pointers themselves.
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Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux

Pull clock framework fixes from Michael Turquette:
 "The clk fixes for 4.0-rc4 comprise three themes.

  First are the usual driver fixes for new regressions since v3.19.

  Second are fixes to the common clock divider type caused by recent
  changes to how we round clock rates.  This affects many clock drivers
  that use this common code.

  Finally there are fixes for drivers that improperly compared struct
  clk pointers (drivers must not deref these pointers).  While some of
  these drivers have done this for a long time, this did not cause a
  problem until we started generating unique struct clk pointers for
  every consumer.  A new function, clk_is_match was introduced to get
  these drivers working again and they are fixed up to no longer deref
  the pointers themselves"

* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
  ASoC: kirkwood: fix struct clk pointer comparing
  ASoC: fsl_spdif: fix struct clk pointer comparing
  ARM: imx: fix struct clk pointer comparing
  clk: introduce clk_is_match
  clk: don't export static symbol
  clk: divider: fix calculation of initial best divider when rounding to closest
  clk: divider: fix selection of divider when rounding to closest
  clk: divider: fix calculation of maximal parent rate for a given divider
  clk: divider: return real rate instead of divider value
  clk: qcom: fix platform_no_drv_owner.cocci warnings
  clk: qcom: fix platform_no_drv_owner.cocci warnings
  clk: qcom: Add PLL4 vote clock
  clk: qcom: lcc-msm8960: Fix PLL rate detection
  clk: qcom: Fix slimbus n and m val offsets
  clk: ti: Fix FAPLL parent enable bit handling
2015-03-15 15:07:08 -07:00
Linus Torvalds 6981e2af36 ARM: SoC fixes for 4.0-rc3
This is a rather unpleasantly large set of bug fixes for arm-soc,
 Most of them because of cross-tree dependencies for Exynos
 where we should have figured out the right path to merge things
 before the merge window, and then the maintainer being unable to
 sort things out in time during a business trip.
 
 The other changes contained here are the usual collection:
 
 MAINTAINERS file updates
  - Gregory Clement is now a co-maintainer for the legacy Marvell EBU
    platforms
  - A MAINTAINERS entry for the Freescale Vybrid platform that was
    added last year
  - Matt Porter no longer works as a maintainer on Broadcom SoCs
 
 Build-time issues
  - A compile-time error for at91
  - Several minor DT fixes on at91, imx, exynos, socfpga, and omap
  - The new digicolor platform was not correctly enabled at all
 
 Configuration issues
  - Two defconfig fix for regressions using USB on versatile
    express and on OMAP3
  - Enabling all 8 CPUs on Allwinner/SUNxi
  - Enabling the new STiH410 platform to be usable
 
 Bug fixes in platform code
  - A missing barrier for socfpga
  - Fixing LPDDR1 self-refresh mode on at91
  - Fixing RTC interrupt numbers on Exynos3250
  - Fixing a cache-coherency issues in CPU power-down
    on Exynos5
  - Multiple small OMAP power management fixes
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Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Arnd Bergmann:
 "This is a rather unpleasantly large set of bug fixes for arm-soc, Most
  of them because of cross-tree dependencies for Exynos where we should
  have figured out the right path to merge things before the merge
  window, and then the maintainer being unable to sort things out in
  time during a business trip.

  The other changes contained here are the usual collection:

  MAINTAINERS file updates
   - Gregory Clement is now a co-maintainer for the legacy Marvell EBU
     platforms
   - A MAINTAINERS entry for the Freescale Vybrid platform that was
     added last year
   - Matt Porter no longer works as a maintainer on Broadcom SoCs

  Build-time issues
   - A compile-time error for at91
   - Several minor DT fixes on at91, imx, exynos, socfpga, and omap
   - The new digicolor platform was not correctly enabled at all

  Configuration issues
   - Two defconfig fix for regressions using USB on versatile express
     and on OMAP3
   - Enabling all 8 CPUs on Allwinner/SUNxi
   - Enabling the new STiH410 platform to be usable

  Bug fixes in platform code
   - A missing barrier for socfpga
   - Fixing LPDDR1 self-refresh mode on at91
   - Fixing RTC interrupt numbers on Exynos3250
   - Fixing a cache-coherency issues in CPU power-down on Exynos5
   - Multiple small OMAP power management fixes"

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (69 commits)
  MAINTAINERS: Add myself as co-maintainer to the legacy support of the mvebu SoCs
  ARM: at91: pm_slowclock: fix the compilation error
  ARM: at91/dt: fix USB high-speed clock to select UTMI
  ARM: at91/dt: fix at91 udc compatible strings
  ARM: at91/dt: declare matrix node as a syscon device
  ARM: vexpress: update CONFIG_USB_ISP1760 option
  ARM: digicolor: add the machine directory to Makefile
  ARM: STi: Add STiH410 SoC support
  MAINTAINERS: add Freescale Vybrid SoC
  MAINTAINERS: Remove self as ARM mach-bcm co-maintainer
  ARM: imx6sl-evk: set swbst_reg as vbus's parent reg
  ARM: imx6qdl-sabresd: set swbst_reg as vbus's parent reg
  ARM: at91/dt: at91sam9261: fix clocks and clock-names in udc definition
  ARM: OMAP2+: Fix wl12xx on dm3730-evm with mainline u-boot
  ARM: OMAP: enable TWL4030_USB in omap2plus_defconfig
  ARM: dts: dra7x-evm: avoid possible contention while muxing on CAN lines
  ARM: dts: dra7x-evm: Don't use dcan1_rx.gpio1_15 in DCAN pinctrl
  ARM: dts: am43xx: fix SLEWCTRL_FAST pinctrl binding
  ARM: dts: am33xx: fix SLEWCTRL_FAST pinctrl binding
  ARM: dts: OMAP5: fix polling intervals for thermal zones
  ...
2015-03-15 10:49:38 -07:00
Linus Torvalds 71c87bd062 irqchip fixes for v4.0
- armada-370-xp
    - Chained per-cpu interrupts
 
 - gic{,-v3,v3-its}
    - Various fixes for safer operation
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Merge tag 'irqchip-fixes-4.0' of git://git.infradead.org/users/jcooper/linux

Pull irqchip fixes from Jason Cooper:
 "armada-370-xp:
   - Chained per-cpu interrupts

  gic{,-v3,v3-its}"
   - Various fixes for safer operation"

* tag 'irqchip-fixes-4.0' of git://git.infradead.org/users/jcooper/linux:
  irqchip: gicv3-its: Support safe initialization
  irqchip: gicv3-its: Define macros for GITS_CTLR fields
  irqchip: gicv3-its: Add limitation to page order
  irqchip: gicv3-its: Use 64KB page as default granule
  irqchip: gicv3-its: Zero itt before handling to hardware
  irqchip: gic-v3: Fix out of bounds access to cpu_logical_map
  irqchip: gic: Fix unsafe locking reported by lockdep
  irqchip: gicv3-its: Fix unsafe locking reported by lockdep
  irqchip: gicv3-its: Iterate over PCI aliases to generate ITS configuration
  irqchip: gicv3-its: Allocate enough memory for the full range of DeviceID
  irqchip: gicv3-its: Fix ITS CPU init
  irqchip: armada-370-xp: Fix chained per-cpu interrupts
2015-03-15 10:41:30 -07:00
Linus Torvalds f47e331042 xen: bug fixes for 4.0-rc3
- Fix a PV regression in 3.19.
 - Fix a dom0 crash on hosts with large numbers of PIRQs.
 - Prevent pcifront from disabling memory or I/O port access, which may
   trigger host crashes.
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Merge tag 'stable/for-linus-4.0-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull xen bug fixes from David Vrabel:

 - fix a PV regression in 3.19.

 - fix a dom0 crash on hosts with large numbers of PIRQs.

 - prevent pcifront from disabling memory or I/O port access, which may
   trigger host crashes.

* tag 'stable/for-linus-4.0-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  xen-pciback: limit guest control of command register
  xen/events: avoid NULL pointer dereference in dom0 on large machines
  xen: Remove trailing semicolon from xenbus_register_frontend() definition
  x86/xen: correct bug in p2m list initialization
2015-03-13 13:34:38 -07:00
Linus Torvalds 3d52c5bdbe DeviceTree fixes for 4.0-rc:
- Fix for stdout-path option parsing with added unittest
 
 - Fix for stdout-path interaction with earlycon
 
 - Several DT unittest fixes
 
 - Fix Sparc allmodconfig build error on
   of_platform_register_reconfig_notifier
 
 - Several DT overlay kconfig and build warning fixes
 
 - Several DT binding documentation updates
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Merge tag 'devicetree-fixes-for-4.0' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

Pull DeviceTree fixes from Rob Herring:

 - fix for stdout-path option parsing with added unittest

 - fix for stdout-path interaction with earlycon

 - several DT unittest fixes

 - fix Sparc allmodconfig build error on of_platform_register_reconfig_notifier

 - several DT overlay kconfig and build warning fixes

 - several DT binding documentation updates

* tag 'devicetree-fixes-for-4.0' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
  of/platform: Fix sparc:allmodconfig build
  of: unittest: Add options string testcase variants
  of: fix handling of '/' in options for of_find_node_by_path()
  of/unittest: Fix the wrong expected value in of_selftest_property_string
  of/unittest: remove the duplicate of_changeset_init
  dt: submitting-patches: clarify that DT maintainers are to be cced on bindings
  of: unittest: fix I2C dependency
  of/overlay: Remove unused variable
  Documentation: DT: Renamed of-serial.txt to 8250.txt
  of: Fix premature bootconsole disable with 'stdout-path'
  serial: add device tree binding documentation for ETRAX FS UART
  of/overlay: Directly include idr.h
  of: Drop superfluous dependance for OF_OVERLAY
  of: Add vendor prefix for Arasan
  of: Add prompt for OF_OVERLAY config
2015-03-13 11:10:10 -07:00
Linus Torvalds f788baadbd Merge branch 'gadget' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull gadgetfs fixes from Al Viro:
 "Assorted fixes around AIO on gadgetfs: leaks, use-after-free, troubles
  caused by ->f_op flipping"

* 'gadget' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  gadgetfs: really get rid of switching ->f_op
  gadgetfs: get rid of flipping ->f_op in ep_config()
  gadget: switch ep_io_operations to ->read_iter/->write_iter
  gadgetfs: use-after-free in ->aio_read()
  gadget/function/f_fs.c: switch to ->{read,write}_iter()
  gadget/function/f_fs.c: use put iov_iter into io_data
  gadget/function/f_fs.c: close leaks
  move iov_iter.c from mm/ to lib/
  new helper: dup_iter()
2015-03-13 10:55:32 -07:00
Guenter Roeck a697c2efba of/platform: Fix sparc:allmodconfig build
sparc:allmodconfig fails to build with:

drivers/built-in.o: In function `platform_bus_init':
(.init.text+0x3684): undefined reference to `of_platform_register_reconfig_notifier'

of_platform_register_reconfig_notifier is only declared if both OF_ADDRESS
and OF_DYNAMIC are configured. Yet, the include file only declares a dummy
function if OF_DYNAMIC is not configured. The sparc architecture does not
configure OF_ADDRESS, but does configure OF_DYNAMIC, causing above error.

Fixes: 801d728c10 ("of/reconfig: Add OF_DYNAMIC notifier for platform_bus_type")
Cc: Pantelis Antoniou <pantelis.antoniou@konsulko.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Rob Herring <robh@kernel.org>
2015-03-13 09:45:24 -05:00
Andrey Ryabinin d3733e5c98 kasan, module: move MODULE_ALIGN macro into <linux/moduleloader.h>
include/linux/moduleloader.h is more suitable place for this macro.
Also change alignment to PAGE_SIZE for CONFIG_KASAN=n as such
alignment already assumed in several places.

Signed-off-by: Andrey Ryabinin <a.ryabinin@samsung.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-03-12 18:46:08 -07:00
Andrey Ryabinin a5af5aa8b6 kasan, module, vmalloc: rework shadow allocation for modules
Current approach in handling shadow memory for modules is broken.

Shadow memory could be freed only after memory shadow corresponds it is no
longer used.  vfree() called from interrupt context could use memory its
freeing to store 'struct llist_node' in it:

    void vfree(const void *addr)
    {
    ...
        if (unlikely(in_interrupt())) {
            struct vfree_deferred *p = this_cpu_ptr(&vfree_deferred);
            if (llist_add((struct llist_node *)addr, &p->list))
                    schedule_work(&p->wq);

Later this list node used in free_work() which actually frees memory.
Currently module_memfree() called in interrupt context will free shadow
before freeing module's memory which could provoke kernel crash.

So shadow memory should be freed after module's memory.  However, such
deallocation order could race with kasan_module_alloc() in module_alloc().

Free shadow right before releasing vm area.  At this point vfree()'d
memory is not used anymore and yet not available for other allocations.
New VM_KASAN flag used to indicate that vm area has dynamically allocated
shadow memory so kasan frees shadow only if it was previously allocated.

Signed-off-by: Andrey Ryabinin <a.ryabinin@samsung.com>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-03-12 18:46:08 -07:00
Michael Turquette 3d3801effd clk: introduce clk_is_match
Some drivers compare struct clk pointers as a means of knowing
if the two pointers reference the same clock hardware. This behavior is
dubious (drivers must not dereference struct clk), but did not cause any
regressions until the per-user struct clk patch was merged. Now the test
for matching clk's will always fail with per-user struct clk's.

clk_is_match is introduced to fix the regression and prevent drivers
from comparing the pointers manually.

Fixes: 035a61c314 ("clk: Make clk API return per-user struct clk instances")
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Shawn Guo <shawn.guo@linaro.org>
Cc: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Signed-off-by: Michael Turquette <mturquette@linaro.org>
[arnd@arndb.de: Fix COMMON_CLK=N && HAS_CLK=Y config]
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
[sboyd@codeaurora.org: const arguments to clk_is_match() and
remove unnecessary ternary operation]
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-03-11 15:56:59 -07:00
Arnd Bergmann 0397da78a1 Fixes for various omap variants, mostly minor fixes for various SoCs
with the bigger changes being for the dra7 clocks and hwmod data:
 
 - Fix wl12xx for dm3730-evm
 
 - Fix omap4 prm save and clea
 
 - Fix hwmod clkdm use count
 
 - Fix hwmod data for pcie on dra7
 
 - Fix lockdep for hwmod
 
 - Fix USB on most omap3 boars by enabling it in the defconfig
 
 - Fix the bypass clock source for omap5 and dra7
 
 - Fix the ehrpwm clock for am33xx and am43xx
 
 - Enable AES and SHAM for BeagleBone white
 
 - Use rmii clock for am335x-lxm
 
 - Fix polling intervals for omap5 thermal zones
 
 - Fix slewctrl for am33xx and am43xx
 
 - Fix dra7-evm dcan pinctrl
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Merge tag 'fixes-v4.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes

Pull "omap fixes against v4.0-rc2" from Tony Lindgren:

Fixes for various omap variants, mostly minor fixes for various SoCs
with the bigger changes being for the dra7 clocks and hwmod data:

- Fix wl12xx for dm3730-evm

- Fix omap4 prm save and clea

- Fix hwmod clkdm use count

- Fix hwmod data for pcie on dra7

- Fix lockdep for hwmod

- Fix USB on most omap3 boars by enabling it in the defconfig

- Fix the bypass clock source for omap5 and dra7

- Fix the ehrpwm clock for am33xx and am43xx

- Enable AES and SHAM for BeagleBone white

- Use rmii clock for am335x-lxm

- Fix polling intervals for omap5 thermal zones

- Fix slewctrl for am33xx and am43xx

- Fix dra7-evm dcan pinctrl

* tag 'fixes-v4.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: OMAP2+: Fix wl12xx on dm3730-evm with mainline u-boot
  ARM: OMAP: enable TWL4030_USB in omap2plus_defconfig
  ARM: dts: dra7x-evm: avoid possible contention while muxing on CAN lines
  ARM: dts: dra7x-evm: Don't use dcan1_rx.gpio1_15 in DCAN pinctrl
  ARM: dts: am43xx: fix SLEWCTRL_FAST pinctrl binding
  ARM: dts: am33xx: fix SLEWCTRL_FAST pinctrl binding
  ARM: dts: OMAP5: fix polling intervals for thermal zones
  ARM: dts: am335x-lxm: Use rmii-clock-ext
  ARM: dts: am335x-bone-common: enable aes and sham
  ARM: dts: am43xx-clocks: Fix ehrpwm tbclk data on am43xx
  ARM: dts: am33xx-clocks: Fix ehrpwm tbclk data on am33xx
  ARM: dts: OMAP5: Fix the bypass clock source for dpll_iva and others
  ARM: dts: DRA7x: Fix the bypass clock source for dpll_iva and others
  ARM: OMAP4+: PRM: fix omap4 version of prm_save_and_clear_irqen
  ARM: OMAP2+: hwmod: fix deassert hardreset clkdm usecounting
  ARM: DRA7: hwmod_data: Fix hwmod data for pcie
  ARM: omap2+: omap_hwmod: Set unique lock_class_key per hwmod
2015-03-11 15:35:28 +01:00
Linus Torvalds 36bef88380 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:

 1) nft_compat accidently truncates ethernet protocol to 8-bits, from
    Arturo Borrero.

 2) Memory leak in ip_vs_proc_conn(), from Julian Anastasov.

 3) Don't allow the space required for nftables rules to exceed the
    maximum value representable in the dlen field.  From Patrick
    McHardy.

 4) bcm63xx_enet can accidently leave interrupts permanently disabled
    due to errors in the NAPI polling exit logic.  Fix from Nicolas
    Schichan.

 5) Fix OOPSes triggerable by the ping protocol module, due to missing
    address family validations etc.  From Lorenzo Colitti.

 6) Don't use RCU locking in sleepable context in team driver, from Jiri
    Pirko.

 7) xen-netback miscalculates statistic offset pointers when reporting
    the stats to userspace.  From David Vrabel.

 8) Fix a leak of up to 256 pages per VIF destroy in xen-netaback, also
    from David Vrabel.

 9) ip_check_defrag() cannot assume that skb_network_offset(),
    particularly when it is used by the AF_PACKET fanout defrag code.
    From Alexander Drozdov.

10) gianfar driver doesn't query OF node names properly when trying to
    determine the number of hw queues available.  Fix it to explicitly
    check for OF nodes named queue-group.  From Tobias Waldekranz.

11) MID field in macb driver should be 12 bits, not 16.  From Punnaiah
    Choudary Kalluri.

12) Fix unintentional regression in traceroute due to timestamp socket
    option changes.  Empty ICMP payloads should be allowed in
    non-timestamp cases.  From Willem de Bruijn.

13) When devices are unregistered, we have to get rid of AF_PACKET
    multicast list entries that point to it via ifindex.  Fix from
    Francesco Ruggeri.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (38 commits)
  tipc: fix bug in link failover handling
  net: delete stale packet_mclist entries
  net: macb: constify macb configuration data
  MAINTAINERS: add Marc Kleine-Budde as co maintainer for CAN networking layer
  MAINTAINERS: linux-can moved to github
  can: kvaser_usb: Read all messages in a bulk-in URB buffer
  can: kvaser_usb: Avoid double free on URB submission failures
  can: peak_usb: fix missing ctrlmode_ init for every dev
  can: add missing initialisations in CAN related skbuffs
  ip: fix error queue empty skb handling
  bgmac: Clean warning messages
  tcp: align tcp_xmit_size_goal() on tcp_tso_autosize()
  net: fec: fix unbalanced clk disable on driver unbind
  net: macb: Correct the MID field length value
  net: gianfar: correctly determine the number of queue groups
  ipv4: ip_check_defrag should not assume that skb_network_offset is zero
  net: bcmgenet: properly disable password matching
  net: eth: xgene: fix booting with devicetree
  bnx2x: Force fundamental reset for EEH recovery
  xen-netback: refactor xenvif_handle_frag_list()
  ...
2015-03-09 18:17:21 -07:00
Linus Torvalds d08edd8f09 spi: Fixes for v4.0
A collection of driver specific fixes to which the usual comments about
 them being important if you see them mostly apply (except for the
 comment fix).  The pl022 one is particularly nasty for anyone affected
 by it.
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Merge tag 'spi-v4.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

Pull spi fixes from Mark Brown:
 "A collection of driver specific fixes to which the usual comments
  about them being important if you see them mostly apply (except for
  the comment fix).  The pl022 one is particularly nasty for anyone
  affected by it"

* tag 'spi-v4.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
  spi: pl022: Fix race in giveback() leading to driver lock-up
  spi: dw-mid: avoid potential NULL dereference
  spi: img-spfi: Verify max spfi transfer length
  spi: fix a typo in comment.
  spi: atmel: Fix interrupt setup for PDC transfers
  spi: dw: revisit FIFO size detection again
  spi: dw-pci: correct number of chip selects
  drivers: spi: ti-qspi: wait for busy bit clear before data write/read
2015-03-09 17:50:02 -07:00
Linus Torvalds ecddad64d4 fbdev fixes for 4.0
* Fix regression in with omapdss when using i2c displays
 * Fix possible null deref in fbmon
 * Check kalloc return value in AMBA CLCD
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Merge tag 'fbdev-fixes-4.0' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux

Pull fbdev fixes from Tomi Valkeinen:
 - Fix regression in with omapdss when using i2c displays
 - Fix possible null deref in fbmon
 - Check kalloc return value in AMBA CLCD

* tag 'fbdev-fixes-4.0' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux:
  OMAPDSS: fix regression with display sysfs files
  video: fbdev: fix possible null dereference
  video: ARM CLCD: Add missing error check for devm_kzalloc
2015-03-09 17:35:29 -07:00
Linus Torvalds b695f31f4e Merge branch 'for-4.0-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq
Pull workqueue fix from Tejun Heo:
 "One fix patch for a subtle livelock condition which can happen on
  PREEMPT_NONE kernels involving two racing cancel_work calls.  Whoever
  comes in the second has to wait for the previous one to finish.  This
  was implemented by making the later one block for the same condition
  that the former would be (work item completion) and then loop and
  retest; unfortunately, depending on the wake up order, the later one
  could lock out the former one to finish by busy looping on the cpu.

  This is fixed by implementing explicit wait mechanism.  Work item
  might not belong anywhere at this point and there's remote possibility
  of thundering herd problem.  I originally tried to use bit_waitqueue
  but it didn't work for static work items on modules.  It's currently
  using single wait queue with filtering wake up function and exclusive
  wakeup.  If this ever becomes a problem, which is not very likely, we
  can try to figure out a way to piggy back on bit_waitqueue"

* 'for-4.0-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
  workqueue: fix hang involving racing cancel[_delayed]_work_sync()'s for PREEMPT_NONE
2015-03-09 17:00:54 -07:00
Linus Torvalds 1163d504ae USB fixes for 4.0-rc3
Here's a round of USB fixes for 4.0-rc3.
 
 Nothing major, the usual gadget, xhci and usb-serial fixes and a few new
 device ids as well.
 
 All have been in linux-next successfully.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-4.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB fixes from Greg KH:
 "Here's a round of USB fixes for 4.0-rc3.

  Nothing major, the usual gadget, xhci and usb-serial fixes and a few
  new device ids as well.

  All have been in linux-next successfully"

* tag 'usb-4.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (36 commits)
  xhci: Workaround for PME stuck issues in Intel xhci
  xhci: fix reporting of 0-sized URBs in control endpoint
  usb: ftdi_sio: Add jtag quirk support for Cyber Cortex AV boards
  USB: ch341: set tty baud speed according to tty struct
  USB: serial: cp210x: Adding Seletek device id's
  USB: pl2303: disable break on shutdown
  USB: mxuport: fix null deref when used as a console
  USB: serial: clean up bus probe error handling
  USB: serial: fix port attribute-creation race
  USB: serial: fix tty-device error handling at probe
  USB: serial: fix potential use-after-free after failed probe
  USB: console: add dummy __module_get
  USB: ftdi_sio: add PIDs for Actisense USB devices
  Revert "USB: serial: make bulk_out_size a lower limit"
  cdc-acm: Add support for Denso cradle CU-321
  usb-storage: support for more than 8 LUNs
  uas: Add US_FL_NO_REPORT_OPCODES for JMicron JMS539
  USB: usbfs: don't leak kernel data in siginfo
  xhci: Clear the host side toggle manually when endpoint is 'soft reset'
  xhci: Allocate correct amount of scratchpad buffers
  ...
2015-03-08 12:47:18 -07:00
Linus Torvalds bbbce516bb TTY/Serial fixes for 4.0-rc3
Here are some tty and serial driver fixes for 4.0-rc3.
 
 Along with the atime fix that you know about, here are some other serial
 driver bugfixes as well.  Most notable is a wait_until_sent bugfix that
 was traced back to being around since before 2.6.12 that Johan has fixed
 up.
 
 All have been in linux-next successfully.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-4.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull tty/serial fixes from Greg KH:
 "Here are some tty and serial driver fixes for 4.0-rc3.

  Along with the atime fix that you know about, here are some other
  serial driver bugfixes as well.  Most notable is a wait_until_sent
  bugfix that was traced back to being around since before 2.6.12 that
  Johan has fixed up.

  All have been in linux-next successfully"

* tag 'tty-4.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  TTY: fix tty_wait_until_sent maximum timeout
  TTY: fix tty_wait_until_sent on 64-bit machines
  USB: serial: fix infinite wait_until_sent timeout
  TTY: bfin_jtag_comm: remove incorrect wait_until_sent operation
  net: irda: fix wait_until_sent poll timeout
  serial: uapi: Declare all userspace-visible io types
  serial: core: Fix iotype userspace breakage
  serial: sprd: Fix missing spin_unlock in sprd_handle_irq()
  console: Fix console name size mismatch
  tty: fix up atime/mtime mess, take four
  serial: 8250_dw: Fix get_mctrl behaviour
  serial:8250:8250_pci: delete unneeded quirk entries
  serial:8250:8250_pci: fix redundant entry report for WCH_CH352_2S
  Change email address for 8250_pci
  serial: 8250: Revert "tty: serial: 8250_core: read only RX if there is something in the FIFO"
  Revert "tty/serial: of_serial: add DT alias ID handling"
2015-03-08 12:25:40 -07:00
Yun Wu 7cb991164a irqchip: gicv3-its: Define macros for GITS_CTLR fields
Define macros for GITS_CTLR fields to avoid using magic numbers.

Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Yun Wu <wuyun.wu@huawei.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Link: https://lkml.kernel.org/r/1425659870-11832-11-git-send-email-marc.zyngier@arm.com
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2015-03-08 05:34:35 +00:00
Marc Zyngier f54b97ed0b irqchip: gicv3-its: Allocate enough memory for the full range of DeviceID
The ITS table allocator is only allocating a single page per table.
This works fine for most things, but leads to silent lack of
interrupt delivery if we end-up with a device that has an ID that is
out of the range defined by a single page of memory. Even worse, depending
on the page size, behaviour changes, which is not a very good experience.

A solution is actually to allocate memory for the full range of ID that
the ITS supports. A massive waste memory wise, but at least a safe bet.

Tested on a Phytium SoC.

Tested-by: Chen Baozi <chenbaozi@kylinos.com.cn>
Acked-by: Chen Baozi <chenbaozi@kylinos.com.cn>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Link: https://lkml.kernel.org/r/1425659870-11832-3-git-send-email-marc.zyngier@arm.com
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2015-03-08 05:32:52 +00:00
Peter Hurley 647f162b8e serial: uapi: Declare all userspace-visible io types
ioctl(TIOCGSERIAL|TIOCSSERIAL) report and can change the port->iotype.
UART drivers use the UPIO_* definitions, but the uapi header defines
parallel values and userspace uses these parallel values for ioctls;
thus the userspace values are definitive.

Define UPIO_* iotypes in terms of the uapi defines, SERIAL_IO_*;
extend the uapi defines to include all values in use by the serial
core.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-07 03:39:55 +01:00
Peter Hurley 2bb785169e serial: core: Fix iotype userspace breakage
commit 3ffb1a8193 ("serial: core: Add big-endian iotype")
re-numbered userspace-dependent values; ioctl(TIOCSSERIAL) can
assign the port iotype (which is expected to match the selected
i/o accessors), so iotype values must not be changed.

Cc: Kevin Cernekee <cernekee@gmail.com>
Cc: <stable@vger.kernel.org> # 3.19+
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Reviewed-by: Kevin Cernekee <cernekee@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-07 03:39:55 +01:00
Linus Torvalds af13e86713 Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
 "Radeon, imx, msm, and i915 fixes.

  The msm, imx and i915 ones are fairly run of the mill.

  Radeon had some DP audio and posting reads for irq fixes, along with a
  fix for 32-bit kernels with new cards, we were using unsigned long to
  represent GPU side memory space, but since that changed size on 32 vs
  64 cards with lots of VRAM failed, so the change has no effect on
  x86-64, just moves to using uint64_t instead"

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (35 commits)
  drm/msm: kexec fixes
  drm/msm/mdp5: fix cursor blending
  drm/msm/mdp5: fix cursor ROI
  drm/msm/atomic: Don't leak atomic commit object when commit fails
  drm/msm/mdp5: Avoid flushing registers when CRTC is disabled
  drm/msm: update generated headers (add 6th lm.base entry)
  drm/msm/mdp5: fixup "drm/msm: fix fallout of atomic dpms changes"
  drm/ttm: device address space != CPU address space
  drm/mm: Support 4 GiB and larger ranges
  drm/i915: gen4: work around hang during hibernation
  drm/i915: Check for driver readyness before handling an underrun interrupt
  drm/radeon: fix interlaced modes on DCE8
  drm/radeon: fix DRM_IOCTL_RADEON_CS oops
  drm/radeon: do a posting read in cik_set_irq
  drm/radeon: do a posting read in si_set_irq
  drm/radeon: do a posting read in evergreen_set_irq
  drm/radeon: do a posting read in r600_set_irq
  drm/radeon: do a posting read in rs600_set_irq
  drm/radeon: do a posting read in r100_set_irq
  radeon/audio: fix DP audio on DCE6
  ...
2015-03-06 16:54:22 -08:00
Mark Brown 60c1beeff4 Merge remote-tracking branches 'spi/fix/atmel', 'spi/fix/doc', 'spi/fix/dw', 'spi/fix/img-spfi', 'spi/fix/pl022' and 'spi/fix/ti-qspi' into spi-linus 2015-03-06 21:10:56 +00:00
Linus Torvalds 39ed853a24 Power management and ACPI fixes for v4.0-rc3
- Fix ACPI resources management problems introduced by the recent
    rework of the code in question (Jiang Liu) and a build issue
    introduced by those changes (Joachim Nilsson).
 
  - Fix a recent suspend-to-idle regression on systems where entering
    idle states causes local timers to stop, prevent suspend-to-idle
    from crashing in restricted configurations (no cpuidle driver,
    cpuidle disabled etc.) and clean up the idle loop somewhat while
    at it (Rafael J Wysocki).
 
  - Fix build problem in the cpufreq ppc driver (Geert Uytterhoeven).
 
  - Allow the ACPI backlight driver module to be loaded if ACPI is
    disabled which helps the i915 driver in those configurations
    (stable-candidate) and change the code to help debug unusual use
    cases (Chris Wilson).
 
  - Wakeup IRQ management changes in v3.18 caused some drivers on the
    at91 platform to trigger a warning from the IRQ core related to
    an unexpected combination of interrupt action handler flags.
    However, on at91 a timer IRQ is shared with some other devices
    (including system wakeup ones) and that leads to the unusual
    combination of flags in question.  To make it possible to avoid
    the warning introduce a new interrupt action handler flag (which
    can be used by drivers to indicate the special case to the core)
    and rework the problematic at91 drivers to use it and work as
    expected during system suspend/resume.  From Boris Brezillon,
    Rafael J Wysocki and Mark Rutland.
 
  - Clean up the generic power domains subsystem's debugfs interface
    (Kevin Hilman).
 
 /
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Merge tag 'pm+acpi-4.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management and ACPI fixes from Rafael Wysocki:
 "These are fixes for recent regressions (ACPI resources management,
  suspend-to-idle), stable-candidate fixes (ACPI backlight), fixes
  related to the wakeup IRQ management changes made in v3.18, other
  fixes (suspend-to-idle, cpufreq ppc driver) and a couple of cleanups
  (suspend-to-idle, generic power domains, ACPI backlight).

  Specifics:

   - Fix ACPI resources management problems introduced by the recent
     rework of the code in question (Jiang Liu) and a build issue
     introduced by those changes (Joachim Nilsson).

   - Fix a recent suspend-to-idle regression on systems where entering
     idle states causes local timers to stop, prevent suspend-to-idle
     from crashing in restricted configurations (no cpuidle driver,
     cpuidle disabled etc.) and clean up the idle loop somewhat while at
     it (Rafael J Wysocki).

   - Fix build problem in the cpufreq ppc driver (Geert Uytterhoeven).

   - Allow the ACPI backlight driver module to be loaded if ACPI is
     disabled which helps the i915 driver in those configurations
     (stable-candidate) and change the code to help debug unusual use
     cases (Chris Wilson).

   - Wakeup IRQ management changes in v3.18 caused some drivers on the
     at91 platform to trigger a warning from the IRQ core related to an
     unexpected combination of interrupt action handler flags.  However,
     on at91 a timer IRQ is shared with some other devices (including
     system wakeup ones) and that leads to the unusual combination of
     flags in question.

     To make it possible to avoid the warning introduce a new interrupt
     action handler flag (which can be used by drivers to indicate the
     special case to the core) and rework the problematic at91 drivers
     to use it and work as expected during system suspend/resume.  From
     Boris Brezillon, Rafael J Wysocki and Mark Rutland.

   - Clean up the generic power domains subsystem's debugfs interface
     (Kevin Hilman)"

* tag 'pm+acpi-4.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  genirq / PM: describe IRQF_COND_SUSPEND
  tty: serial: atmel: rework interrupt and wakeup handling
  watchdog: at91sam9: request the irq with IRQF_NO_SUSPEND
  cpuidle / sleep: Use broadcast timer for states that stop local timer
  clk: at91: implement suspend/resume for the PMC irqchip
  rtc: at91rm9200: rework wakeup and interrupt handling
  rtc: at91sam9: rework wakeup and interrupt handling
  PM / wakeup: export pm_system_wakeup symbol
  genirq / PM: Add flag for shared NO_SUSPEND interrupt lines
  ACPI / video: Propagate the error code for acpi_video_register
  ACPI / video: Load the module even if ACPI is disabled
  PM / Domains: cleanup: rename gpd -> genpd in debugfs interface
  cpufreq: ppc: Add missing #include <asm/smp.h>
  x86/PCI/ACPI: Relax ACPI resource descriptor checks to work around BIOS bugs
  x86/PCI/ACPI: Ignore resources consumed by host bridge itself
  cpuidle: Clean up fallback handling in cpuidle_idle_call()
  cpuidle / sleep: Do sanity checks in cpuidle_enter_freeze() too
  idle / sleep: Avoid excessive disabling and enabling interrupts
  PCI: versatile: Update for list_for_each_entry() API change
  genirq / PM: better describe IRQF_NO_SUSPEND semantics
2015-03-06 10:36:09 -08:00
Linus Torvalds 1b1bd56191 NFS client bugfixes for Linux 4.0
Highlights include:
 
 - Fix a regression in the NFSv4 open state recovery code
 - Fix a regression in the NFSv4 close code
 - Fix regressions and side-effects of the loop-back mounted NFS fixes
   in 3.18, that cause the NFS read() syscall to return EBUSY.
 - Fix regressions around the readdirplus code and how it interacts with
   the VFS lazy unmount changes that went into v3.18.
 - Fix issues with out-of-order RPC call replies replacing updated
   attributes with stale ones (particularly after a truncate()).
 - Fix an underflow checking issue with RPC/RDMA credits
 - Fix a number of issues with the NFSv4 delegation return/free code.
 - Fix issues around stale NFSv4.1 leases when doing a mount
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Merge tag 'nfs-for-4.0-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

Pull NFS client bugfixes from Trond Myklebust:
 "Highlights include:

   - Fix a regression in the NFSv4 open state recovery code
   - Fix a regression in the NFSv4 close code
   - Fix regressions and side-effects of the loop-back mounted NFS fixes
     in 3.18, that cause the NFS read() syscall to return EBUSY.
   - Fix regressions around the readdirplus code and how it interacts
     with the VFS lazy unmount changes that went into v3.18.
   - Fix issues with out-of-order RPC call replies replacing updated
     attributes with stale ones (particularly after a truncate()).
   - Fix an underflow checking issue with RPC/RDMA credits
   - Fix a number of issues with the NFSv4 delegation return/free code.
   - Fix issues around stale NFSv4.1 leases when doing a mount"

* tag 'nfs-for-4.0-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (24 commits)
  NFSv4.1: Clear the old state by our client id before establishing a new lease
  NFSv4: Fix a race in NFSv4.1 server trunking discovery
  NFS: Don't write enable new pages while an invalidation is proceeding
  NFS: Fix a regression in the read() syscall
  NFSv4: Ensure we skip delegations that are already being returned
  NFSv4: Pin the superblock while we're returning the delegation
  NFSv4: Ensure we honour NFS_DELEGATION_RETURNING in nfs_inode_set_delegation()
  NFSv4: Ensure that we don't reap a delegation that is being returned
  NFS: Fix stateid used for NFS v4 closes
  NFSv4: Don't call put_rpccred() under the rcu_read_lock()
  NFS: Don't require a filehandle to refresh the inode in nfs_prime_dcache()
  NFSv3: Use the readdir fileid as the mounted-on-fileid
  NFS: Don't invalidate a submounted dentry in nfs_prime_dcache()
  NFSv4: Set a barrier in the update_changeattr() helper
  NFS: Fix nfs_post_op_update_inode() to set an attribute barrier
  NFS: Remove size hack in nfs_inode_attrs_need_update()
  NFSv4: Add attribute update barriers to delegreturn and pNFS layoutcommit
  NFS: Add attribute update barriers to NFS writebacks
  NFS: Set an attribute barrier on all updates
  NFS: Add attribute update barriers to nfs_setattr_update_inode()
  ...
2015-03-06 10:09:57 -08:00
Dave Gerlach 10b2185514 ARM: dts: am43xx: fix SLEWCTRL_FAST pinctrl binding
According to AM437x TRM, Document SPRUHL7B, Revised December 2014,
Section 7.2.1 Pad Control Registers, setting bit 19 of the pad control
registers actually sets the SLEWCTRL value to slow rather than fast as
the current macro indicates. Introduce a new macro, SLEWCTRL_SLOW, that
sets the bit, and modify SLEWCTRL_FAST to 0 but keep it for
completeness.

Current users of the macro (i2c, mdio, and uart) are left unmodified as
SLEWCTRL_FAST was the macro used and actual desired state. Tested on
am437x-gp-evm with no difference in software performance seen.

Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2015-03-06 09:21:03 -08:00
Dave Gerlach 424e0f039b ARM: dts: am33xx: fix SLEWCTRL_FAST pinctrl binding
According to AM335x TRM, Document spruh73l, Revised February 2015,
Section 9.2.2 Pad Control Registers, setting bit 6 of the pad control
registers actually sets the SLEWCTRL value to slow rather than fast as
the current macro indicates. Introduce a new macro, SLEWCTRL_SLOW, that
sets the bit, and modify SLEWCTRL_FAST to 0 but keep it for
completeness.

Current users of the macro (i2c and mdio) are left unmodified as
SLEWCTRL_FAST was the macro used and actual desired state. Tested on
am335x-gp-evm with no difference in software performance seen.

Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2015-03-06 09:12:56 -08:00
David S. Miller 9d73b42bbf Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf
Pablo Neira Ayuso says:

====================
Netfilter/IPVS fixes for net

The following patchset contains Netfilter/IPVS fixes for your net tree,
they are:

1) Don't truncate ethernet protocol type to u8 in nft_compat, from
   Arturo Borrero.

2) Fix several problems in the addition/deletion of elements in nf_tables.

3) Fix module refcount leak in ip_vs_sync, from Julian Anastasov.

4) Fix a race condition in the abort path in the nf_tables transaction
   infrastructure. Basically aborted rules can show up as active rules
   until changes are unrolled, oneliner from Patrick McHardy.

5) Check for overflows in the data area of the rule, also from Patrick.

6) Fix off-by-one in the per-rule user data size field. This introduces
   a new nft_userdata structure that is placed at the beginning of the
   user data area that contains the length to save some bits from the
   rule and we only need one bit to indicate its presence, from Patrick.

7) Fix rule replacement error path, the replaced rule is deleted on
   error instead of leaving it in place. This has been fixed by relying
   on the abort path to undo the incomplete replacement.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-05 21:51:07 -05:00
Rafael J. Wysocki 79d223646b Merge branch 'irq-pm'
* irq-pm:
  genirq / PM: describe IRQF_COND_SUSPEND
  tty: serial: atmel: rework interrupt and wakeup handling
  watchdog: at91sam9: request the irq with IRQF_NO_SUSPEND
  clk: at91: implement suspend/resume for the PMC irqchip
  rtc: at91rm9200: rework wakeup and interrupt handling
  rtc: at91sam9: rework wakeup and interrupt handling
  PM / wakeup: export pm_system_wakeup symbol
  genirq / PM: Add flag for shared NO_SUSPEND interrupt lines
  genirq / PM: better describe IRQF_NO_SUSPEND semantics
2015-03-06 01:29:05 +01:00
Rafael J. Wysocki eef16e4362 Merge branch 'suspend-to-idle'
* suspend-to-idle:
  cpuidle / sleep: Use broadcast timer for states that stop local timer
  cpuidle: Clean up fallback handling in cpuidle_idle_call()
  cpuidle / sleep: Do sanity checks in cpuidle_enter_freeze() too
  idle / sleep: Avoid excessive disabling and enabling interrupts
2015-03-05 23:14:51 +01:00
Rafael J. Wysocki ef2b22ac54 cpuidle / sleep: Use broadcast timer for states that stop local timer
Commit 3810631332 (PM / sleep: Re-implement suspend-to-idle handling)
overlooked the fact that entering some sufficiently deep idle states
by CPUs may cause their local timers to stop and in those cases it
is necessary to switch over to a broadcast timer prior to entering
the idle state.  If the cpuidle driver in use does not provide
the new ->enter_freeze callback for any of the idle states, that
problem affects suspend-to-idle too, but it is not taken into account
after the changes made by commit 3810631332.

Fix that by changing the definition of cpuidle_enter_freeze() and
re-arranging of the code in cpuidle_idle_call(), so the former does
not call cpuidle_enter() any more and the fallback case is handled
by cpuidle_idle_call() directly.

Fixes: 3810631332 (PM / sleep: Re-implement suspend-to-idle handling)
Reported-and-tested-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
2015-03-05 23:13:19 +01:00
Tejun Heo 8603e1b300 workqueue: fix hang involving racing cancel[_delayed]_work_sync()'s for PREEMPT_NONE
cancel[_delayed]_work_sync() are implemented using
__cancel_work_timer() which grabs the PENDING bit using
try_to_grab_pending() and then flushes the work item with PENDING set
to prevent the on-going execution of the work item from requeueing
itself.

try_to_grab_pending() can always grab PENDING bit without blocking
except when someone else is doing the above flushing during
cancelation.  In that case, try_to_grab_pending() returns -ENOENT.  In
this case, __cancel_work_timer() currently invokes flush_work().  The
assumption is that the completion of the work item is what the other
canceling task would be waiting for too and thus waiting for the same
condition and retrying should allow forward progress without excessive
busy looping

Unfortunately, this doesn't work if preemption is disabled or the
latter task has real time priority.  Let's say task A just got woken
up from flush_work() by the completion of the target work item.  If,
before task A starts executing, task B gets scheduled and invokes
__cancel_work_timer() on the same work item, its try_to_grab_pending()
will return -ENOENT as the work item is still being canceled by task A
and flush_work() will also immediately return false as the work item
is no longer executing.  This puts task B in a busy loop possibly
preventing task A from executing and clearing the canceling state on
the work item leading to a hang.

task A			task B			worker

						executing work
__cancel_work_timer()
  try_to_grab_pending()
  set work CANCELING
  flush_work()
    block for work completion
						completion, wakes up A
			__cancel_work_timer()
			while (forever) {
			  try_to_grab_pending()
			    -ENOENT as work is being canceled
			  flush_work()
			    false as work is no longer executing
			}

This patch removes the possible hang by updating __cancel_work_timer()
to explicitly wait for clearing of CANCELING rather than invoking
flush_work() after try_to_grab_pending() fails with -ENOENT.

Link: http://lkml.kernel.org/g/20150206171156.GA8942@axis.com

v3: bit_waitqueue() can't be used for work items defined in vmalloc
    area.  Switched to custom wake function which matches the target
    work item and exclusive wait and wakeup.

v2: v1 used wake_up() on bit_waitqueue() which leads to NULL deref if
    the target bit waitqueue has wait_bit_queue's on it.  Use
    DEFINE_WAIT_BIT() and __wake_up_bit() instead.  Reported by Tomeu
    Vizoso.

Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Rabin Vincent <rabin.vincent@axis.com>
Cc: Tomeu Vizoso <tomeu.vizoso@gmail.com>
Cc: stable@vger.kernel.org
Tested-by: Jesper Nilsson <jesper.nilsson@axis.com>
Tested-by: Rabin Vincent <rabin.vincent@axis.com>
2015-03-05 08:04:13 -05:00
Alex Deucher 54c4cd68ed drm/ttm: device address space != CPU address space
We need to store device offsets in 64 bit as the device
address space may be larger than the CPU's.

Fixes GPU init failures on radeons with 4GB or more of
vram on 32 bit kernels.  We put vram at the start of the
GPU's address space so the gart aperture starts at 4 GB
causing all GPU addresses in the gart aperture to get
truncated.

bug:
https://bugs.freedesktop.org/show_bug.cgi?id=89072

[airlied: fix warning on nouveau build]

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: thellstrom@vmware.com
Acked-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2015-03-05 09:04:39 +10:00
Thierry Reding 440fd5283a drm/mm: Support 4 GiB and larger ranges
The current implementation is limited by the number of addresses that
fit into an unsigned long. This causes problems on 32-bit Tegra where
unsigned long is 32-bit but drm_mm is used to manage an IOVA space of
4 GiB. Given the 32-bit limitation, the range is limited to 4 GiB - 1
(or 4 GiB - 4 KiB for page granularity).

This commit changes the start and size of the range to be an unsigned
64-bit integer, thus allowing much larger ranges to be supported.

[airlied: fix i915 warnings and coloring callback]

Signed-off-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Dave Airlie <airlied@redhat.com>

fixupo
2015-03-05 09:01:37 +10:00
Rafael J. Wysocki 17f4803420 genirq / PM: Add flag for shared NO_SUSPEND interrupt lines
It currently is required that all users of NO_SUSPEND interrupt
lines pass the IRQF_NO_SUSPEND flag when requesting the IRQ or the
WARN_ON_ONCE() in irq_pm_install_action() will trigger.  That is
done to warn about situations in which unprepared interrupt handlers
may be run unnecessarily for suspended devices and may attempt to
access those devices by mistake.  However, it may cause drivers
that have no technical reasons for using IRQF_NO_SUSPEND to set
that flag just because they happen to share the interrupt line
with something like a timer.

Moreover, the generic handling of wakeup interrupts introduced by
commit 9ce7a25849 (genirq: Simplify wakeup mechanism) only works
for IRQs without any NO_SUSPEND users, so the drivers of wakeup
devices needing to use shared NO_SUSPEND interrupt lines for
signaling system wakeup generally have to detect wakeup in their
interrupt handlers.  Thus if they happen to share an interrupt line
with a NO_SUSPEND user, they also need to request that their
interrupt handlers be run after suspend_device_irqs().

In both cases the reason for using IRQF_NO_SUSPEND is not because
the driver in question has a genuine need to run its interrupt
handler after suspend_device_irqs(), but because it happens to
share the line with some other NO_SUSPEND user.  Otherwise, the
driver would do without IRQF_NO_SUSPEND just fine.

To make it possible to specify that condition explicitly, introduce
a new IRQ action handler flag for shared IRQs, IRQF_COND_SUSPEND,
that, when set, will indicate to the IRQ core that the interrupt
user is generally fine with suspending the IRQ, but it also can
tolerate handler invocations after suspend_device_irqs() and, in
particular, it is capable of detecting system wakeup and triggering
it as appropriate from its interrupt handler.

That will allow us to work around a problem with a shared timer
interrupt line on at91 platforms.

Link: http://marc.info/?l=linux-kernel&m=142252777602084&w=2
Link: http://marc.info/?t=142252775300011&r=1&w=2
Link: https://lkml.org/lkml/2014/12/15/552
Reported-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
2015-03-04 21:42:19 +01:00
Arnd Bergmann bc76161686 First fixes batch for AT91 on 4.0:
- PM slowclock fixes for DDR and timeouts
 - fix some DT entries
 - little defconfig updates
 - the removal of a harmful watchdog option + its detailed documentation
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Merge tag 'at91-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nferre/linux-at91 into fixes

Merge "First fixes batch for AT91 on 4.0" from Nicolas Ferre:

- PM slowclock fixes for DDR and timeouts
- fix some DT entries
- little defconfig updates
- the removal of a harmful watchdog option + its detailed documentation

* tag 'at91-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nferre/linux-at91:
  ARM: at91/dt: keep watchdog running in idle mode
  dts: Documentation: AT91 Watchdog, explain what atmel,idle-halt property really do
  ARM: at91/defconfig: add at91rm9200 ethernet support
  ARM: at91/defconfig: remove CONFIG_SYSFS_DEPRECATED
  ARM: at91/dt: at91sam9260: fix usart pinctrl
  ARM: at91/dt: sama5d4: add missing alias for i2c0
  ARM: at91/dt: at91sam9263: Fixup sram1 device tree node
  ARM: at91: pm: fix SRAM allocation
  ARM: at91: pm: fix at91rm9200 standby
  pm: at91: Workaround DDRSDRC self-refresh bug with LPDDR1 memories.
  pm: at91: pm_slowclock: fix suspend/resume hang up in timeouts
2015-03-04 21:14:47 +01:00
Patrick McHardy 86f1ec3231 netfilter: nf_tables: fix userdata length overflow
The NFT_USERDATA_MAXLEN is defined to 256, however we only have a u8
to store its size. Introduce a struct nft_userdata which contains a
length field and indicate its presence using a single bit in the rule.

The length field of struct nft_userdata is also a u8, however we don't
store zero sized data, so the actual length is udata->len + 1.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2015-03-04 18:46:06 +01:00
Linus Torvalds 789d7f60cd Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:

 1) If an IPVS tunnel is created with a mixed-family destination
    address, it cannot be removed.  Fix from Alexey Andriyanov.

 2) Fix module refcount underflow in netfilter's nft_compat, from Pablo
    Neira Ayuso.

 3) Generic statistics infrastructure can reference variables sitting on
    a released function stack, therefore use dynamic allocation always.
    Fix from Ignacy Gawędzki.

 4) skb_copy_bits() return value test is inverted in ip_check_defrag().

 5) Fix network namespace exit in openvswitch, we have to release all of
    the per-net vports.  From Pravin B Shelar.

 6) Fix signedness bug in CAIF's cfpkt_iterate(), from Dan Carpenter.

 7) Fix rhashtable grow/shrink behavior, only expand during inserts and
    shrink during deletes.  From Daniel Borkmann.

 8) Netdevice names with semicolons should never be allowed, because
    they serve as a separator.  From Matthew Thode.

 9) Use {,__}set_current_state() where appropriate, from Fabian
    Frederick.

10) Revert byte queue limits support in r8169 driver, it's causing
    regressions we can't figure out.

11) tcp_should_expand_sndbuf() erroneously uses tp->packets_out to
    measure packets in flight, properly use tcp_packets_in_flight()
    instead.  From Neal Cardwell.

12) Fix accidental removal of support for bluetooth in CSR based Intel
    wireless cards.  From Marcel Holtmann.

13) We accidently added a behavioral change between native and compat
    tasks, wrt testing the MSG_CMSG_COMPAT bit.  Just ignore it if the
    user happened to set it in a native binary as that was always the
    behavior we had.  From Catalin Marinas.

14) Check genlmsg_unicast() return valud in hwsim netlink tx frame
    handling, from Bob Copeland.

15) Fix stale ->radar_required setting in mac80211 that can prevent
    starting new scans, from Eliad Peller.

16) Fix memory leak in nl80211 monitor, from Johannes Berg.

17) Fix race in TX index handling in xen-netback, from David Vrabel.

18) Don't enable interrupts in amx-xgbe driver until all software et al.
    state is ready for the interrupt handler to run.  From Thomas
    Lendacky.

19) Add missing netlink_ns_capable() checks to rtnl_newlink(), from Eric
    W Biederman.

20) The amount of header space needed in macvtap was not calculated
    properly, fix it otherwise we splat past the beginning of the
    packet.  From Eric Dumazet.

21) Fix bcmgenet TCP TX perf regression, from Jaedon Shin.

22) Don't raw initialize or mod timers, use setup_timer() and
    mod_timer() instead.  From Vaishali Thakkar.

23) Fix software maintained statistics in bcmgenet and systemport
    drivers, from Florian Fainelli.

24) DMA descriptor updates in sh_eth need proper memory barriers, from
    Ben Hutchings.

25) Don't do UDP Fragmentation Offload on RAW sockets, from Michal
    Kubecek.

26) Openvswitch's non-masked set actions aren't constructed properly
    into netlink messages, fix from Joe Stringer.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (116 commits)
  openvswitch: Fix serialization of non-masked set actions.
  gianfar: Reduce logging noise seen due to phy polling if link is down
  ibmveth: Add function to enable live MAC address changes
  net: bridge: add compile-time assert for cb struct size
  udp: only allow UFO for packets from SOCK_DGRAM sockets
  sh_eth: Really fix padding of short frames on TX
  Revert "sh_eth: Enable Rx descriptor word 0 shift for r8a7790"
  sh_eth: Fix RX recovery on R-Car in case of RX ring underrun
  sh_eth: Ensure proper ordering of descriptor active bit write/read
  net/mlx4_en: Disbale GRO for incoming loopback/selftest packets
  net/mlx4_core: Fix wrong mask and error flow for the update-qp command
  net: systemport: fix software maintained statistics
  net: bcmgenet: fix software maintained statistics
  rxrpc: don't multiply with HZ twice
  rxrpc: terminate retrans loop when sending of skb fails
  net/hsr: Fix NULL pointer dereference and refcnt bugs when deleting a HSR interface.
  net: pasemi: Use setup_timer and mod_timer
  net: stmmac: Use setup_timer and mod_timer
  net: 8390: axnet_cs: Use setup_timer and mod_timer
  net: 8390: pcnet_cs: Use setup_timer and mod_timer
  ...
2015-03-03 15:30:07 -08:00
Peter Rosin 02f513a097 pm: at91: Workaround DDRSDRC self-refresh bug with LPDDR1 memories.
The DDRSDR controller fails miserably to put LPDDR1 memories in
self-refresh. Force the controller to think it has DDR2 memories
during the self-refresh period, as the DDR2 self-refresh spec is
equivalent to LPDDR1, and is correctly implemented in the
controller.

Assume that the second controller has the same fault, but that is
untested.

Signed-off-by: Peter Rosin <peda@axentia.se>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-03-03 19:43:59 +01:00
Trond Myklebust 874f946376 NFS: Fix a regression in the read() syscall
When invalidating the page cache for a regular file, we want to first
sync all dirty data to disk and then call invalidate_inode_pages2().
The latter relies on nfs_launder_page() and nfs_release_page() to deal
respectively with dirty pages, and unstable written pages.

When commit 9590544694 ("NFS: avoid deadlocks with loop-back mounted
NFS filesystems.") changed the behaviour of nfs_release_page(), then it
made it possible for invalidate_inode_pages2() to fail with an EBUSY.
Unfortunately, that error is then propagated back to read().

Let's therefore work around the problem for now by protecting the call
to sync the data and invalidate_inode_pages2() so that they are atomic
w.r.t. the addition of new writes.
Later on, we can revisit whether or not we still need nfs_launder_page()
and nfs_release_page().

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2015-03-03 13:02:29 -05:00
Marcin Bis c6331ba3d2 spi: fix a typo in comment.
alway -> always

Signed-off-by: Marcin Bis <marcin@bis.org.pl>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-03-03 14:14:26 +00:00
Linus Torvalds 10d6dfc197 Merge branch 'fixes-for-4.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal
Pull thermal management fixes from Eduardo Valentin:
 "Specifics:

   - Several fixes in tmon tool.

   - Fixes in intel int340x for _ART and _TRT tables.

   - Add id for Avoton SoC into powerclamp driver.

   - Fixes in RCAR thermal driver to remove race conditions and fix fail
     path

   - Fixes in TI thermal driver: removal of unnecessary code and build
     fix if !CONFIG_PM_SLEEP

   - Cleanups in exynos thermal driver

   - Add stubs for include/linux/thermal.h.  Now drivers using thermal
     calls but that also work without CONFIG_THERMAL will be able to
     compile for systems that don't care about thermal.

  Note: I am sending this pull on Rui's behalf while he fixes issues in
  his Linux box"

* 'fixes-for-4.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal:
  thermal: int340x_thermal: Ignore missing _ART, _TRT tables
  thermal/intel_powerclamp: add id for Avoton SoC
  tools/thermal: tmon: silence 'set but not used' warnings
  tools/thermal: tmon: use pkg-config to determine library dependencies
  tools/thermal: tmon: support cross-compiling
  tools/thermal: tmon: add .gitignore
  tools/thermal: tmon: fixup tui windowing calculations
  tools/thermal: tmon: tui: don't hard-code dialog window size assumptions
  tools/thermal: tmon: add min/max macros
  tools/thermal: tmon: add --target-temp parameter
  thermal: exynos: Clean-up code to use oneline entry for exynos compatible table
  thermal: rcar: Make error and remove paths symmetrical with init
  thermal: rcar: Fix race condition between init and interrupt
  thermal: Introduce dummy functions when thermal is not defined
  ti-soc-thermal: Delete an unnecessary check before the function call "cpufreq_cooling_unregister"
  thermal: ti-soc-thermal: bandgap: Fix build warning if !CONFIG_PM_SLEEP
2015-03-02 14:08:10 -08:00
Or Gerlitz f5956fafb0 net/mlx4_core: Fix wrong mask and error flow for the update-qp command
The bit mask for currently supported driver features (MLX4_UPDATE_QP_SUPPORTED_ATTRS)
of the update-qp command was defined twice (using enum value and pre-processor
define directive) and wrong.

The return value of the call to mlx4_update_qp() from within the SRIOV
resource-tracker was wrongly voided down.

Fix both issues.

issue: none
Fixes: 09e05c3f78 ('net/mlx4: Set vlan stripping policy by the right command')
Fixes: ce8d9e0d67 ('net/mlx4_core: Add UPDATE_QP SRIOV wrapper support')
Signed-off-by: Matan Barak <matanb@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-02 15:27:19 -05:00
Yuval Shaia 604b91fee4 xen: Remove trailing semicolon from xenbus_register_frontend() definition
Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
2015-03-02 10:38:59 +00:00
Trond Myklebust a08a8cd375 NFS: Add attribute update barriers to NFS writebacks
Ensure that other operations that race with our write RPC calls
cannot revert the file size updates that were made on the server.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Tested-by: Chuck Lever <chuck.lever@oracle.com>
2015-03-01 23:23:06 -05:00
Trond Myklebust f044636d97 NFS: Add attribute update barriers to nfs_setattr_update_inode()
Ensure that other operations which raced with our setattr RPC call
cannot revert the file attribute changes that were made on the server.
To do so, we artificially bump the attribute generation counter on
the inode so that all calls to nfs_fattr_init() that precede ours
will be dropped.

The motivation for the patch came from Chuck Lever's reports of readaheads
racing with truncate operations and causing the file size to be reverted.

Reported-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Tested-by: Chuck Lever <chuck.lever@oracle.com>
2015-03-01 23:23:05 -05:00
Trond Myklebust 140e049c64 NFS: Add a helper to set attribute barriers
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Tested-by: Chuck Lever <chuck.lever@oracle.com>
2015-03-01 23:23:05 -05:00
Linus Torvalds ae1aa797e0 Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
 "Just general fixes: radeon, i915, atmel, tegra, amdkfd and one core
  fix"

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (28 commits)
  drm: atmel-hlcdc: remove clock polarity from crtc driver
  drm/radeon: only enable DP audio if the monitor supports it
  drm/radeon: fix atom aux payload size check for writes (v2)
  drm/radeon: fix 1 RB harvest config setup for TN/RL
  drm/radeon: enable SRBM timeout interrupt on EG/NI
  drm/radeon: enable SRBM timeout interrupt on SI
  drm/radeon: enable SRBM timeout interrupt on CIK v2
  drm/radeon: dump full IB if we hit a packet error
  drm/radeon: disable mclk switching with 120hz+ monitors
  drm/radeon: use drm_mode_vrefresh() rather than mode->vrefresh
  drm/radeon: enable native backlight control on old macs
  drm/i915: Fix frontbuffer false positve.
  drm/i915: Align initial plane backing objects correctly
  drm/i915: avoid processing spurious/shared interrupts in low-power states
  drm/i915: Check obj->vma_list under the struct_mutex
  drm/i915: Fix a use after free, and unbalanced refcounting
  drm: atmel-hlcdc: remove useless pm_runtime_put_sync in probe
  drm: atmel-hlcdc: reset layer A2Q and UPDATE bits when disabling it
  drm: Fix deadlock due to getconnector locking changes
  drm/i915: Dell Chromebook 11 has PWM backlight
  ...
2015-02-28 10:36:48 -08:00
Daniel Borkmann 4c4b52d9b2 rhashtable: remove indirection for grow/shrink decision functions
Currently, all real users of rhashtable default their grow and shrink
decision functions to rht_grow_above_75() and rht_shrink_below_30(),
so that there's currently no need to have this explicitly selectable.

It can/should be generic and private inside rhashtable until a real
use case pops up. Since we can make this private, we'll save us this
additional indirection layer and can improve insertion/deletion time
as well.

Reference: http://patchwork.ozlabs.org/patch/443040/
Suggested-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-27 16:06:02 -05:00
Johan Hovold bc4b1f486f Revert "USB: serial: make bulk_out_size a lower limit"
This reverts commit 5083fd7bdf.

A bulk-out size smaller than the end-point size is indeed valid. The
offending commit broke the usb-debug driver for EHCI debug devices,
which use 8-byte buffers.

Fixes: 5083fd7bdf ("USB: serial: make bulk_out_size a lower limit")
Reported-by: "Li, Elvin" <elvin.li@intel.com>
Cc: stable <stable@vger.kernel.org>	# v3.15
Signed-off-by: Johan Hovold <johan@kernel.org>
2015-02-26 17:02:15 +01:00