openwrt/staging/blogic.git
8 years agousb: musb: Fix PM runtime for disconnect after unconfigure
Tony Lindgren [Thu, 22 Sep 2016 20:58:29 +0000 (15:58 -0500)]
usb: musb: Fix PM runtime for disconnect after unconfigure

If we unconfigure musb as a USB peripheral with cable connected,
and then remove the cable, no interrupts will happen. And musb
thinks we're still connected keeping the device active.

Now with the session bit based PM runtime working for musb, we
can fix this issue by calling musb irq_work. That rechecks the
devctl register and reconfigures PM runtime based on the devctl.

Fixes: 467d5c980709 ("usb: musb: Implement session bit based runtime PM for musb-core")
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agomusb: Export musb_root_disconnect for use in modules
Hans de Goede [Sat, 17 Sep 2016 10:08:10 +0000 (12:08 +0200)]
musb: Export musb_root_disconnect for use in modules

Export musb_root_disconnect for use in modules, so that musb glue
code build as module can use it.

This fixes the buildbot errors for -next in arm64-allmodconfig
and arm-allmodconfig.

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Fixes: 7cba17ec9adc8cf ("musb: sunxi: Add support for platform_set_mode")
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agousb: misc: legousbtower: Fix NULL pointer deference
Greg Kroah-Hartman [Mon, 19 Sep 2016 18:09:51 +0000 (19:09 +0100)]
usb: misc: legousbtower: Fix NULL pointer deference

This patch fixes a NULL pointer dereference caused by a race codition in
the probe function of the legousbtower driver. It re-structures the
probe function to only register the interface after successfully reading
the board's firmware ID.

The probe function does not deregister the usb interface after an error
receiving the devices firmware ID. The device file registered
(/dev/usb/legousbtower%d) may be read/written globally before the probe
function returns. When tower_delete is called in the probe function
(after an r/w has been initiated), core dev structures are deleted while
the file operation functions are still running. If the 0 address is
mappable on the machine, this vulnerability can be used to create a
Local Priviege Escalation exploit via a write-what-where condition by
remapping dev->interrupt_out_buffer in tower_write. A forged USB device
and local program execution would be required for LPE. The USB device
would have to delay the control message in tower_probe and accept
the control urb in tower_open whilst guest code initiated a write to the
device file as tower_delete is called from the error in tower_probe.

This bug has existed since 2003. Patch tested by emulated device.

Reported-by: James Patrick-Evans <james@jmp-e.com>
Tested-by: James Patrick-Evans <james@jmp-e.com>
Signed-off-by: James Patrick-Evans <james@jmp-e.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agocdc-acm: hardening against malicious devices
Oliver Neukum [Tue, 20 Sep 2016 13:45:42 +0000 (15:45 +0200)]
cdc-acm: hardening against malicious devices

This should fix the last holes against malicious devices
still open in cdc-acm. It cannot go into stable due to
the introduction of the common parser.
The fix for stable already merged also covers the problems this patch
fixes.

Signed-off-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agoRevert "usb: gadget: NCM: Protect dev->port_usb using dev->lock"
Greg Kroah-Hartman [Mon, 19 Sep 2016 09:05:43 +0000 (11:05 +0200)]
Revert "usb: gadget: NCM: Protect dev->port_usb using dev->lock"

This reverts commit c9ffc78745f89e300fe704348dd8e6800acf4d18 as it was
reported to be broken.

Cc: Felipe Balbi <felipe.balbi@linux.intel.com>
Cc: Jim Baxter <jim_baxter@mentor.com>
Cc: Harish Jenny K N <harish_kandiga@mentor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agoMerge 4.8-rc7 into usb-next
Greg Kroah-Hartman [Mon, 19 Sep 2016 07:12:41 +0000 (09:12 +0200)]
Merge 4.8-rc7 into usb-next

We want/need the USB fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agoLinux 4.8-rc7
Linus Torvalds [Mon, 19 Sep 2016 00:27:41 +0000 (17:27 -0700)]
Linux 4.8-rc7

8 years agoMerge tag 'usb-4.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Linus Torvalds [Sun, 18 Sep 2016 19:07:05 +0000 (12:07 -0700)]
Merge tag 'usb-4.8-rc7' of git://git./linux/kernel/git/gregkh/usb

Pull USB fixes from Greg KH:
 "Here are two small fixes, and one new device id, for 4.8-rc7

  The fixes solve a build error that was reported in your tree for the
  blackfin arch, and resolve an issue with a number of broken USB
  devices that reported the wrong interval rate.  Included here is also
  a new device id for the usb-serial driver.

  All have been in linux-next with no reported issues"

* tag 'usb-4.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  USB: change bInterval default to 10 ms
  usb: musb: Fix tusb6010 compile error on blackfin
  USB: serial: simple: add support for another Infineon flashloader

8 years agoMerge tag 'fixes-for-linus-v4.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 18 Sep 2016 18:57:24 +0000 (11:57 -0700)]
Merge tag 'fixes-for-linus-v4.8-rc7' of git://git./linux/kernel/git/groeck/linux-staging

Pull uaccess fixes from Guenter Roeck:
 "Two patches fixing problems introduced with copy_from_user changes"

* tag 'fixes-for-linus-v4.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  openrisc: fix the fix of copy_from_user()
  avr32: fix 'undefined reference to `___copy_from_user'

8 years agoMerge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 18 Sep 2016 18:50:48 +0000 (11:50 -0700)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull perf fixes from Thomas Gleixner:
 "A couple of small fixes to x86 perf drivers:

   - Measure L2 for HW_CACHE* events on AMD

   - Fix the address filter handling in the intel/pt driver

   - Handle the BTS disabling at the proper place"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/x86/amd: Make HW_CACHE_REFERENCES and HW_CACHE_MISSES measure L2
  perf/x86/intel/pt: Do validate the size of a kernel address filter
  perf/x86/intel/pt: Fix kernel address filter's offset validation
  perf/x86/intel/pt: Fix an off-by-one in address filter configuration
  perf/x86/intel: Don't disable "intel_bts" around "intel" event batching

8 years agoMerge branch 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 18 Sep 2016 18:38:46 +0000 (11:38 -0700)]
Merge branch 'smp-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull SMP build fixlet from Thomas Gleixner:
 "Add a missing include in cpuhotplug.h"

* 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  cpu/hotplug: Include linux/types.h in linux/cpuhotplug.h

8 years agoMerge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 18 Sep 2016 18:08:00 +0000 (11:08 -0700)]
Merge branch 'irq-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull irq fixes from Thomas Gleixner:
 "Two patches from Boris which address a potential deadlock in the atmel
  irq chip driver"

* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  irqchip/atmel-aic: Fix potential deadlock in ->xlate()
  genirq: Provide irq_gc_{lock_irqsave,unlock_irqrestore}() helpers

8 years agoopenrisc: fix the fix of copy_from_user()
Guenter Roeck [Sat, 17 Sep 2016 19:57:24 +0000 (12:57 -0700)]
openrisc: fix the fix of copy_from_user()

Since commit acb2505d0119 ("openrisc: fix copy_from_user()"),
copy_from_user() returns the number of bytes requested, not the
number of bytes not copied.

Cc: Al Viro <viro@zeniv.linux.org.uk>
Fixes: acb2505d0119 ("openrisc: fix copy_from_user()")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
8 years agoavr32: fix 'undefined reference to `___copy_from_user'
Guenter Roeck [Sat, 17 Sep 2016 14:52:49 +0000 (07:52 -0700)]
avr32: fix 'undefined reference to `___copy_from_user'

avr32 builds fail with:

arch/avr32/kernel/built-in.o: In function `arch_ptrace':
(.text+0x650): undefined reference to `___copy_from_user'
arch/avr32/kernel/built-in.o:(___ksymtab+___copy_from_user+0x0): undefined
reference to `___copy_from_user'
kernel/built-in.o: In function `proc_doulongvec_ms_jiffies_minmax':
(.text+0x5dd8): undefined reference to `___copy_from_user'
kernel/built-in.o: In function `proc_dointvec_minmax_sysadmin':
sysctl.c:(.text+0x6174): undefined reference to `___copy_from_user'
kernel/built-in.o: In function `ptrace_has_cap':
ptrace.c:(.text+0x69c0): undefined reference to `___copy_from_user'
kernel/built-in.o:ptrace.c:(.text+0x6b90): more undefined references to
`___copy_from_user' follow

Fixes: 8630c32275ba ("avr32: fix copy_from_user()")
Cc: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Havard Skinnemoen <hskinnemoen@gmail.com>
Acked-by: Hans-Christian Noren Egtvedt <egtvedt@samfundet.no>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
8 years agofix iov_iter_fault_in_readable()
Al Viro [Thu, 15 Sep 2016 23:11:45 +0000 (00:11 +0100)]
fix iov_iter_fault_in_readable()

... by turning it into what used to be multipages counterpart

Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agoMerge tag 'mmc-v4.8-rc6' of git://git.linaro.org/people/ulf.hansson/mmc
Linus Torvalds [Sat, 17 Sep 2016 19:59:57 +0000 (12:59 -0700)]
Merge tag 'mmc-v4.8-rc6' of git://git.linaro.org/people/ulf.hansson/mmc

Pull MMC fixes from Ulf Hansson:
 "MMC host:
   - omap/omap_hsmmc: Initialize dma_slave_config to avoid random data
   - sdhci-st: Handle interconnect clock"

* tag 'mmc-v4.8-rc6' of git://git.linaro.org/people/ulf.hansson/mmc:
  mmc: omap: Initialize dma_slave_config to avoid random data in it's fields
  mmc: omap_hsmmc: Initialize dma_slave_config to avoid random data
  mmc: sdhci-st: Handle interconnect clock
  dt-bindings: mmc: sdhci-st: Mention the discretionary "icn" clock

8 years agoMerge tag 'powerpc-4.8-6' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc...
Linus Torvalds [Sat, 17 Sep 2016 19:52:01 +0000 (12:52 -0700)]
Merge tag 'powerpc-4.8-6' of git://git./linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:
 "Fixes for code merged this cycle:

   - Fix restore of SPRs upon wake up from hypervisor state loss from
     Gautham R  Shenoy
   - Fix the state of root PE from Gavin Shan
   - Detach from PE on releasing PCI device from Gavin Shan
   - Fix size of NUM_CPU_FTR_KEYS on 32-bit
   - Fix missed TCE invalidations that should fallback to OPAL"

* tag 'powerpc-4.8-6' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/powernv/pci: Fix missed TCE invalidations that should fallback to OPAL
  powerpc/powernv: Detach from PE on releasing PCI device
  powerpc/powernv: Fix the state of root PE
  powerpc/kernel: Fix size of NUM_CPU_FTR_KEYS on 32-bit
  powerpc/powernv: Fix restore of SPRs upon wake up from hypervisor state loss

8 years agoMerge branch 'for-next' of git://git.samba.org/sfrench/cifs-2.6
Linus Torvalds [Sat, 17 Sep 2016 00:09:48 +0000 (17:09 -0700)]
Merge branch 'for-next' of git://git.samba.org/sfrench/cifs-2.6

Pull cifs fixes from Steve French:
 "Small set of cifs fixes"

* 'for-next' of git://git.samba.org/sfrench/cifs-2.6:
  Move check for prefix path to within cifs_get_root()
  Compare prepaths when comparing superblocks
  Fix memory leaks in cifs_do_mount()

8 years agoMerge tag 'nfsd-4.8-2' of git://linux-nfs.org/~bfields/linux
Linus Torvalds [Sat, 17 Sep 2016 00:00:26 +0000 (17:00 -0700)]
Merge tag 'nfsd-4.8-2' of git://linux-nfs.org/~bfields/linux

Pull nfsd bugfix from Bruce Fields:
 "Fix a memory corruption bug that I introduced in 4.7"

* tag 'nfsd-4.8-2' of git://linux-nfs.org/~bfields/linux:
  svcauth_gss: Revert 64c59a3726f2 ("Remove unnecessary allocation")

8 years agoMerge tag 'drm-fixes-for-4.8-rc6' of git://people.freedesktop.org/~airlied/linux
Linus Torvalds [Fri, 16 Sep 2016 23:27:30 +0000 (16:27 -0700)]
Merge tag 'drm-fixes-for-4.8-rc6' of git://people.freedesktop.org/~airlied/linux

Pull drm fixes from Dave Airlie:
 "Two sets of i915 fixes, one set of vc4 crasher fixes, and a couple of
  atmel fixes.

  Nothing too out there at this stage, though I think some people are
  holidaying so it's been quiet enough"

* tag 'drm-fixes-for-4.8-rc6' of git://people.freedesktop.org/~airlied/linux:
  drm/i915: Ignore OpRegion panel type except on select machines
  Revert "drm/i915/psr: Make idle_frames sensible again"
  drm/i915: Restore lost "Initialized i915" welcome message
  drm/vc4: mark vc4_bo_cache_purge() static
  drm/i915: Add GEN7_PCODE_MIN_FREQ_TABLE_GT_RATIO_OUT_OF_RANGE to SNB
  drm/i915: disable 48bit full PPGTT when vGPU is active
  drm/i915: enable vGPU detection for all
  drm/atmel-hlcdc: Make ->reset() implementation static
  drm: atmel-hlcdc: Fix vertical scaling
  drm/vc4: Allow some more signals to be packed with uniform resets.
  drm/i915/dvo: Remove dangling call to drm_encoder_cleanup()

8 years agoMerge tag 'pm-4.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Linus Torvalds [Fri, 16 Sep 2016 23:22:52 +0000 (16:22 -0700)]
Merge tag 'pm-4.8-rc7' of git://git./linux/kernel/git/rafael/linux-pm

Pull power management fix from Rafael Wysocki:
 "More annotations of tracepoints in the runtime PM framework to prevent
  RCU from complaining when that code is invoked from the idle path
  (Paul McKenney)"

* tag 'pm-4.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  PM / runtime: Use _rcuidle for runtime suspend tracepoints

8 years agoMerge tag 'drm-vc4-fixes-2016-09-14' of https://github.com/anholt/linux into drm...
Dave Airlie [Fri, 16 Sep 2016 21:57:55 +0000 (07:57 +1000)]
Merge tag 'drm-vc4-fixes-2016-09-14' of https://github.com/anholt/linux into drm-fixes

This pull request brings in a fix for crashes in X on VC4.

* tag 'drm-vc4-fixes-2016-09-14' of https://github.com/anholt/linux:
  drm/vc4: mark vc4_bo_cache_purge() static
  drm/vc4: Allow some more signals to be packed with uniform resets.

8 years agoMerge tag 'drm-intel-fixes-2016-09-15' of git://anongit.freedesktop.org/drm-intel...
Dave Airlie [Fri, 16 Sep 2016 21:57:21 +0000 (07:57 +1000)]
Merge tag 'drm-intel-fixes-2016-09-15' of git://anongit.freedesktop.org/drm-intel into drm-fixes

i915 fixes from Jani.

* tag 'drm-intel-fixes-2016-09-15' of git://anongit.freedesktop.org/drm-intel:
  drm/i915: Ignore OpRegion panel type except on select machines
  Revert "drm/i915/psr: Make idle_frames sensible again"
  drm/i915: Restore lost "Initialized i915" welcome message

8 years agoMerge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma
Linus Torvalds [Fri, 16 Sep 2016 20:51:42 +0000 (13:51 -0700)]
Merge tag 'for-linus' of git://git./linux/kernel/git/dledford/rdma

Pull rdma fixes from Doug Ledford:
 "Round three of 4.8 rc fixes.

  This is likely the last rdma pull request this cycle.  The new rxe
  driver had a few issues (you probably saw the boot bot bug report) and
  they should be addressed now.  There are a couple other fixes here,
  mainly mlx4.  There are still two outstanding issues that need
  resolved but I don't think their fix will make this kernel cycle.

  Summary:

   - Various fixes to rdmavt, ipoib, mlx5, mlx4, rxe"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma:
  IB/rdmavt: Don't vfree a kzalloc'ed memory region
  IB/rxe: Fix kmem_cache leak
  IB/rxe: Fix race condition between requester and completer
  IB/rxe: Fix duplicate atomic request handling
  IB/rxe: Fix kernel panic in udp_setup_tunnel
  IB/mlx5: Set source mac address in FTE
  IB/mlx5: Enable MAD_IFC commands for IB ports only
  IB/mlx4: Diagnostic HW counters are not supported in slave mode
  IB/mlx4: Use correct subnet-prefix in QP1 mads under SR-IOV
  IB/mlx4: Fix code indentation in QP1 MAD flow
  IB/mlx4: Fix incorrect MC join state bit-masking on SR-IOV
  IB/ipoib: Don't allow MC joins during light MC flush
  IB/rxe: fix GFP_KERNEL in spinlock context

8 years agoMerge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm...
Linus Torvalds [Fri, 16 Sep 2016 19:15:41 +0000 (12:15 -0700)]
Merge tag 'fixes-for-linus' of git://git./linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Arnd Bergmann:
 "Here are a couple of bugfixes for v4.8-rc.

  Most of them have actually been around for a while this time but for
  some reason didn't get applied early on.  The shmobile regulator fix
  is the only one that isn't completely obvious.

  Device tree changes:
   - archtimer interrupts must be level triggered (multiple platforms)
   - fix for USB and MMC clocks on STiH410
   - fix split DT repository in case of raspberry-pi 3
   - a new use of skeleton.dtsi on arm64 has crept in after that was
     removed.

  defconfig updates:
   - xilinx vdma has a new Kconfig symbol name
   - keystone requires CONFIG_NOP_USB_XCEIV since v4.8-rc1

  Code fixes:
   - fix regulator quirk on shmobile
   - suspend-to-ram regression on EXYNOS

  Maintainer updates:
   - Javier Martinez Canillas is now a reviewer for Samsung EXYNOS"

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: keystone: defconfig: Fix USB configuration
  arm64: dts: Fix broken architected timer interrupt trigger
  ARM: multi_v7_defconfig: update XILINX_VDMA
  ARM64: dts: bcm: Use a symlink to R-Pi dtsi files from arch=arm
  ARM: dts: Remove use of skeleton.dtsi from bcm283x.dtsi
  ARM: dts: STiH407-family: Provide interconnect clock for consumption in ST SDHCI
  ARM: dts: STiH410: Handle interconnect clock required by EHCI/OHCI (USB)
  ARM: shmobile: fix regulator quirk for Gen2
  ARM: EXYNOS: Clear OF_POPULATED flag from PMU node in IRQ init callback
  MAINTAINERS: Add myself as reviewer for Samsung Exynos support

8 years agoMerge branch 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm
Linus Torvalds [Fri, 16 Sep 2016 19:08:13 +0000 (12:08 -0700)]
Merge branch 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm

Pull ARM fixes from Russell King:
 "Most of this update are fixes primarily discovered from testing on the
  older StrongARM 1110 and PXA systems, as a result of recent interest
  from several people in these platforms:

   - Locomo interrupt handling incorrectly stores the handler data in
     the chip's private data slot: when Locomo is combined with an
     interrupt controller who's chip uses the chip private data, this
     leads to an oops.

   - SA1111 was missing a call to clk_disable() to clean up after a
     failed probe.

   - SA1111 and PCMCIA suspend/resume was broken:

     The PCMCIA "ds" layer was using the legacy bus suspend/resume
     methods, which the core PM code is no longer calling as a result of
     device_pm_check_callbacks() introduced in commit aa8e54b559479
     ("PM / sleep: Go direct_complete if driver has no callbacks").

     SA1111 was broken due to changes to PCMCIA which makes PCMCIA
     suspend itself later than the SA1111 code expects, and resume
     before the SA1111 code has initialised access to the pcmcia
     sub-device.

   - the default SA1111 interrupt mask polarity got messed up when it
     was converted to use a dynamic interrupt base number for its
     interrupts.

   - fix platform_get_irq() error code propagation, which was causing
     problems on platforms where the interrupt may not be available at
      probe time in DT setups.

   - fix the lack of clock to PCMCIA code on PXA platforms, which was
     omitted in conversions of PXA to CCF.

   - fix an oops in the PXA PCMCIA code caused by a previous commit not
     realising that Lubbock is different from the rest of the PXA PCMCIA
     drivers.

   - ensure that SA1111 low-level PCMCIA drivers propagate their error
     codes to the main probe function, rather than the driver silently
     accepting a failure.

   - fix the sa11xx debugfs reporting of timing information, which
     always indicated zero due to the clock being a factor of 1000 out.

   - fix the polarity of the status change signal reported from the
     sockets.

  Lastly, one ARM specific commit from Stefan Agner fixing the LPAE
  cache attributes"

* 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm:
  ARM: pxa/lubbock: add pcmcia clock
  ARM: locomo: fix locomo irq handling
  ARM: 8612/1: LPAE: initialize cache policy correctly
  ARM: sa1111: fix missing clk_disable()
  ARM: sa1111: fix pcmcia suspend/resume
  ARM: sa1111: fix pcmcia interrupt mask polarity
  ARM: sa1111: fix error code propagation in sa1111_probe()
  pcmcia: lubbock: fix sockets configuration
  pcmcia: sa1111: fix propagation of lowlevel board init return code
  pcmcia: soc_common: fix SS_STSCHG polarity
  pcmcia: sa11xx_base: add units to the timing information
  pcmcia: sa11xx_base: fix reporting of timing information
  pcmcia: ds: fix suspend/resume

8 years agoIB/rdmavt: Don't vfree a kzalloc'ed memory region
Colin Ian King [Fri, 9 Sep 2016 07:15:37 +0000 (08:15 +0100)]
IB/rdmavt: Don't vfree a kzalloc'ed memory region

The userspace memory region 'mr' is allocated with kzalloc in
__rvt_alloc_mr  however it is incorrectly being freed with vfree in
__rvt_free_mr. Fix this by using kfree to free it.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Acked-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
8 years agoIB/rxe: Fix kmem_cache leak
Yonatan Cohen [Wed, 7 Sep 2016 11:04:07 +0000 (14:04 +0300)]
IB/rxe: Fix kmem_cache leak

Decrement qp reference when handling error path
in completer to prevent kmem_cache leak.

Fixes: 8700e3e7c485 ("Soft RoCE driver")
Signed-off-by: Yonatan Cohen <yonatanc@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
8 years agoIB/rxe: Fix race condition between requester and completer
Yonatan Cohen [Wed, 7 Sep 2016 11:04:06 +0000 (14:04 +0300)]
IB/rxe: Fix race condition between requester and completer

rxe_requester() is sending a pkt with rxe_xmit_packet() and
then calls rxe_update() to update the wqe and qp's psn values.
But sometimes the response is received before the requester
had time to update the wqe in which case the completer
acts on errornous wqe values.
This fix updates the wqe and qp before actually sending
the request and rolls back when xmit fails.

Fixes: 8700e3e7c485 ("Soft RoCE driver")
Signed-off-by: Yonatan Cohen <yonatanc@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
8 years agoIB/rxe: Fix duplicate atomic request handling
Yonatan Cohen [Wed, 7 Sep 2016 11:04:05 +0000 (14:04 +0300)]
IB/rxe: Fix duplicate atomic request handling

When handling ack for atomic opcodes like "fetch&add"
or "cmp&swp", the method send_atomic_ack() saves the ack
before sending it, in case it gets lost and never reach the
requester. In which case the method duplicate_request()
will need to find it using the duplicated request.psn.
But send_atomic_ack() used a wrong psn value and thus
the above ack was never found.
This fix uses the ack.psn to locate the ack in case
its needed.
This fix also copies the ack packet to the skb's control buffer
since duplicate_request() will need it when calling rxe_xmit_packet()

Fixes: 8700e3e7c485 ("Soft RoCE driver")
Signed-off-by: Yonatan Cohen <yonatanc@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
8 years agoIB/rxe: Fix kernel panic in udp_setup_tunnel
Yonatan Cohen [Wed, 7 Sep 2016 11:04:04 +0000 (14:04 +0300)]
IB/rxe: Fix kernel panic in udp_setup_tunnel

Disable creation of a UDP socket for ipv6 when
CONFIG_IPV6 is not enabeld. Since udp_sock_create6()
returns 0 when CONFIG_IPV6 is not set

[   46.888632] IP: [<c220705a>] setup_udp_tunnel_sock+0x6/0x4f
[   46.891355] *pdpt = 0000000000000000 *pde = f000ff53f000ff53
[   46.893918] Oops: 0002 [#1] PREEMPT
[   46.896014] CPU: 0 PID: 1 Comm: swapper Not tainted 4.7.0-rc4-00001-g8700e3e #1
[   46.900280] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[   46.904905] task: cf06c040 ti: cf05e000 task.ti: cf05e000
[   46.907854] EIP: 0060:[<c220705a>] EFLAGS: 00210246 CPU: 0
[   46.911137] EIP is at setup_udp_tunnel_sock+0x6/0x4f
[   46.914070] EAX: 00000044 EBX: 00000001 ECX: cf05fef0 EDX: ca8142e0
[   46.917236] ESI: c2c4505b EDI: cf05fef0 EBP: cf05fed0 ESP: cf05fed0
[   46.919836]  DS: 007b ES: 007b FS: 0000 GS: 00e0 SS: 0068
[   46.922046] CR0: 80050033 CR2: 000001fc CR3: 02cec000 CR4: 000006b0
[   46.924550] Stack:
[   46.926014]  cf05ff10 c1fd4657 ca8142e0 0000000a 00000000 00000000 0000b712 00000008
[   46.931274]  00000000 6bb5bd01 c1fd48de 00000000 00000000 cf05ff1c 00000000 00000000
[   46.936122]  cf05ff1c c1fd4bdf 00000000 cf05ff28 c2c4507b ffffffff cf05ff88 c2bf1c74
[   46.942350] Call Trace:
[   46.944403]  [<c1fd4657>] rxe_setup_udp_tunnel+0x8f/0x99
[   46.947689]  [<c1fd48de>] ? net_to_rxe+0x4e/0x4e
[   46.950567]  [<c1fd4bdf>] rxe_net_init+0xe/0xa4
[   46.953147]  [<c2c4507b>] rxe_module_init+0x20/0x4c
[   46.955448]  [<c2bf1c74>] do_one_initcall+0x89/0x113
[   46.957797]  [<c2bf15eb>] ? set_debug_rodata+0xf/0xf
[   46.959966]  [<c2bf1dbc>] ? kernel_init_freeable+0xbe/0x15b
[   46.962262]  [<c2bf1ddc>] kernel_init_freeable+0xde/0x15b
[   46.964418]  [<c232eb54>] kernel_init+0x8/0xd0
[   46.966618]  [<c2333122>] ret_from_kernel_thread+0xe/0x24
[   46.969592]  [<c232eb4c>] ? rest_init+0x6f/0x6f

Fixes: 8700e3e7c485 ("Soft RoCE driver")
Signed-off-by: Yonatan Cohen <yonatanc@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
8 years agoIB/mlx5: Set source mac address in FTE
Maor Gottlieb [Mon, 12 Sep 2016 16:16:24 +0000 (19:16 +0300)]
IB/mlx5: Set source mac address in FTE

Set the source mac address in the FTE when L2 specification
is provided.

Fixes: 038d2ef87572 ('IB/mlx5: Add flow steering support')
Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
8 years agoIB/mlx5: Enable MAD_IFC commands for IB ports only
Noa Osherovich [Mon, 12 Sep 2016 16:16:23 +0000 (19:16 +0300)]
IB/mlx5: Enable MAD_IFC commands for IB ports only

MAD_IFC command is supported only for physical functions (PF)
and when physical port is IB. The proposed fix enforces it.

Fixes: d603c809ef91 ("IB/mlx5: Fix decision on using MAD_IFC")
Reported-by: David Chang <dchang@suse.com>
Signed-off-by: Noa Osherovich <noaos@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
8 years agoIB/mlx4: Diagnostic HW counters are not supported in slave mode
Kamal Heib [Mon, 12 Sep 2016 16:16:22 +0000 (19:16 +0300)]
IB/mlx4: Diagnostic HW counters are not supported in slave mode

Modify the mlx4_ib_diag_counters() to avoid the following error in the
hypervisor when the slave tries to query the hardware counters in SR-IOV
mode.

mlx4_core 0000:81:00.0: Unknown command:0x30 accepted from slave:1

Fixes: 3f85f2aaabf7 ("IB/mlx4: Add diagnostic hardware counters")
Signed-off-by: Kamal Heib <kamalh@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
8 years agoIB/mlx4: Use correct subnet-prefix in QP1 mads under SR-IOV
Jack Morgenstein [Mon, 12 Sep 2016 16:16:20 +0000 (19:16 +0300)]
IB/mlx4: Use correct subnet-prefix in QP1 mads under SR-IOV

When sending QP1 MAD packets which use a GRH, the source GID
(which consists of the 64-bit subnet prefix, and the 64 bit port GUID)
must be included in the packet GRH.

For SR-IOV, a GID cache is used, since the source GID needs to be the
slave's source GID, and not the Hypervisor's GID. This cache also
included a subnet_prefix. Unfortunately, the subnet_prefix field in
the cache was never initialized (to the default subnet prefix 0xfe80::0).
As a result, this field remained all zeroes.  Therefore, when SR-IOV
was active, all QP1 packets which included a GRH had a source GID
subnet prefix of all-zeroes.

However, the subnet-prefix should initially be 0xfe80::0 (the default
subnet prefix). In addition, if OpenSM modifies a port's subnet prefix,
the new subnet prefix must be used in the GRH when sending QP1 packets.
To fix this we now initialize the subnet prefix in the SR-IOV GID cache
to the default subnet prefix. We update the cached value if/when OpenSM
modifies the port's subnet prefix. We take this cached value when sending
QP1 packets when SR-IOV is active.

Note that the value is stored as an atomic64. This eliminates any need
for locking when the subnet prefix is being updated.

Note also that we depend on the FW generating the "port management change"
event for tracking subnet-prefix changes performed by OpenSM. If running
early FW (before 2.9.4630), subnet prefix changes will not be tracked (but
the default subnet prefix still will be stored in the cache; therefore
users who do not modify the subnet prefix will not have a problem).
IF there is a need for such tracking also for early FW, we will add that
capability in a subsequent patch.

Fixes: 1ffeb2eb8be9 ("IB/mlx4: SR-IOV IB context objects and proxy/tunnel SQP support")
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
8 years agoIB/mlx4: Fix code indentation in QP1 MAD flow
Jack Morgenstein [Mon, 12 Sep 2016 16:16:19 +0000 (19:16 +0300)]
IB/mlx4: Fix code indentation in QP1 MAD flow

The indentation in the QP1 GRH flow in procedure build_mlx_header is
really confusing. Fix it, in preparation for a commit which touches
this code.

Fixes: 1ffeb2eb8be9 ("IB/mlx4: SR-IOV IB context objects and proxy/tunnel SQP support")
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
8 years agoIB/mlx4: Fix incorrect MC join state bit-masking on SR-IOV
Alex Vesker [Mon, 12 Sep 2016 16:16:18 +0000 (19:16 +0300)]
IB/mlx4: Fix incorrect MC join state bit-masking on SR-IOV

Because of an incorrect bit-masking done on the join state bits, when
handling a join request we failed to detect a difference between the
group join state and the request join state when joining as send only
full member (0x8). This caused the MC join request not to be sent.
This issue is relevant only when SRIOV is enabled and SM supports
send only full member.

This fix separates scope bits and join states bits a nibble each.

Fixes: b9c5d6a64358 ('IB/mlx4: Add multicast group (MCG) paravirtualization for SR-IOV')
Signed-off-by: Alex Vesker <valex@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
8 years agoIB/ipoib: Don't allow MC joins during light MC flush
Alex Vesker [Mon, 12 Sep 2016 06:55:28 +0000 (09:55 +0300)]
IB/ipoib: Don't allow MC joins during light MC flush

This fix solves a race between light flush and on the fly joins.
Light flush doesn't set the device to down and unset IPOIB_OPER_UP
flag, this means that if while flushing we have a MC join in progress
and the QP was attached to BC MGID we can have a mismatches when
re-attaching a QP to the BC MGID.

The light flush would set the broadcast group to NULL causing an on
the fly join to rejoin and reattach to the BC MCG as well as adding
the BC MGID to the multicast list. The flush process would later on
remove the BC MGID and detach it from the QP. On the next flush
the BC MGID is present in the multicast list but not found when trying
to detach it because of the previous double attach and single detach.

[18332.714265] ------------[ cut here ]------------
[18332.717775] WARNING: CPU: 6 PID: 3767 at drivers/infiniband/core/verbs.c:280 ib_dealloc_pd+0xff/0x120 [ib_core]
...
[18332.775198] Hardware name: Red Hat KVM, BIOS Bochs 01/01/2011
[18332.779411]  0000000000000000 ffff8800b50dfbb0 ffffffff813fed47 0000000000000000
[18332.784960]  0000000000000000 ffff8800b50dfbf0 ffffffff8109add1 0000011832f58300
[18332.790547]  ffff880226a596c0 ffff880032482000 ffff880032482830 ffff880226a59280
[18332.796199] Call Trace:
[18332.798015]  [<ffffffff813fed47>] dump_stack+0x63/0x8c
[18332.801831]  [<ffffffff8109add1>] __warn+0xd1/0xf0
[18332.805403]  [<ffffffff8109aebd>] warn_slowpath_null+0x1d/0x20
[18332.809706]  [<ffffffffa025d90f>] ib_dealloc_pd+0xff/0x120 [ib_core]
[18332.814384]  [<ffffffffa04f3d7c>] ipoib_transport_dev_cleanup+0xfc/0x1d0 [ib_ipoib]
[18332.820031]  [<ffffffffa04ed648>] ipoib_ib_dev_cleanup+0x98/0x110 [ib_ipoib]
[18332.825220]  [<ffffffffa04e62c8>] ipoib_dev_cleanup+0x2d8/0x550 [ib_ipoib]
[18332.830290]  [<ffffffffa04e656f>] ipoib_uninit+0x2f/0x40 [ib_ipoib]
[18332.834911]  [<ffffffff81772a8a>] rollback_registered_many+0x1aa/0x2c0
[18332.839741]  [<ffffffff81772bd1>] rollback_registered+0x31/0x40
[18332.844091]  [<ffffffff81773b18>] unregister_netdevice_queue+0x48/0x80
[18332.848880]  [<ffffffffa04f489b>] ipoib_vlan_delete+0x1fb/0x290 [ib_ipoib]
[18332.853848]  [<ffffffffa04df1cd>] delete_child+0x7d/0xf0 [ib_ipoib]
[18332.858474]  [<ffffffff81520c08>] dev_attr_store+0x18/0x30
[18332.862510]  [<ffffffff8127fe4a>] sysfs_kf_write+0x3a/0x50
[18332.866349]  [<ffffffff8127f4e0>] kernfs_fop_write+0x120/0x170
[18332.870471]  [<ffffffff81207198>] __vfs_write+0x28/0xe0
[18332.874152]  [<ffffffff810e09bf>] ? percpu_down_read+0x1f/0x50
[18332.878274]  [<ffffffff81208062>] vfs_write+0xa2/0x1a0
[18332.881896]  [<ffffffff812093a6>] SyS_write+0x46/0xa0
[18332.885632]  [<ffffffff810039b7>] do_syscall_64+0x57/0xb0
[18332.889709]  [<ffffffff81883321>] entry_SYSCALL64_slow_path+0x25/0x25
[18332.894727] ---[ end trace 09ebbe31f831ef17 ]---

Fixes: ee1e2c82c245 ("IPoIB: Refresh paths instead of flushing them on SM change events")
Signed-off-by: Alex Vesker <valex@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
8 years agoIB/rxe: fix GFP_KERNEL in spinlock context
Alexey Khoroshilov [Fri, 2 Sep 2016 20:46:53 +0000 (23:46 +0300)]
IB/rxe: fix GFP_KERNEL in spinlock context

There is skb_clone(skb, GFP_KERNEL) in spinlock context
in rxe_rcv_mcast_pkt().

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Acked-by: Moni Shoua <monis@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
8 years agoMerge tag 'usb-serial-4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/johan...
Greg Kroah-Hartman [Fri, 16 Sep 2016 15:42:59 +0000 (17:42 +0200)]
Merge tag 'usb-serial-4.9-rc1' of git://git./linux/kernel/git/johan/usb-serial into usb-next

Johan writes:

USB-serial updates for v4.9-rc1

More clean ups, including a second set of changes from Mathieu as part
of a major overhaul of the ti_usb_3410_5052 driver.

Signed-off-by: Johan Hovold <johan@kernel.org>
8 years agoMerge tag 'usb-serial-4.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/johan...
Greg Kroah-Hartman [Fri, 16 Sep 2016 15:42:10 +0000 (17:42 +0200)]
Merge tag 'usb-serial-4.8-rc7' of git://git./linux/kernel/git/johan/usb-serial into usb-linus

Johan writes:

USB-serial fixes for v4.8-rc7

Here's another Infineon flashloader device id.

Signed-off-by: Johan Hovold <johan@kernel.org>
8 years agoMerge tag 'samsung-fixes-4.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git...
Arnd Bergmann [Fri, 16 Sep 2016 14:29:48 +0000 (16:29 +0200)]
Merge tag 'samsung-fixes-4.8-2' of git://git./linux/kernel/git/krzk/linux into fixes

Pull "ARM: exynos: Fixes for v4.8, secound round" from Krzysztof Kozłowski:

1. A recent change in populating irqchip devices from Device Tree
   broke Suspend to RAM on Exynos boards due to lack of probing of
   PMU (Power Management Unit) driver.  Multiple drivers attach to
   the PMU's DT node: irqchip, clock controller and PMU platform
   driver for handling suspend.  The new irqchip code marked the
   PMU's DT node as OF_POPULATED but we need to attach to this
   node also PMU platform driver.

2. Add Javier as additional reviewer for Exynos patches.

* tag 'samsung-fixes-4.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux:
  ARM: EXYNOS: Clear OF_POPULATED flag from PMU node in IRQ init callback
  MAINTAINERS: Add myself as reviewer for Samsung Exynos support

8 years agoUSB: change bInterval default to 10 ms
Alan Stern [Fri, 16 Sep 2016 14:24:26 +0000 (10:24 -0400)]
USB: change bInterval default to 10 ms

Some full-speed mceusb infrared transceivers contain invalid endpoint
descriptors for their interrupt endpoints, with bInterval set to 0.
In the past they have worked out okay with the mceusb driver, because
the driver sets the bInterval field in the descriptor to 1,
overwriting whatever value may have been there before.  However, this
approach was never sanctioned by the USB core, and in fact it does not
work with xHCI controllers, because they use the bInterval value that
was present when the configuration was installed.

Currently usbcore uses 32 ms as the default interval if the value in
the endpoint descriptor is invalid.  It turns out that these IR
transceivers don't work properly unless the interval is set to 10 ms
or below.  To work around this mceusb problem, this patch changes the
endpoint-descriptor parsing routine, making the default interval value
be 10 ms rather than 32 ms.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Tested-by: Wade Berrier <wberrier@gmail.com>
CC: <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agousb: musb: Fix tusb6010 compile error on blackfin
Tony Lindgren [Fri, 16 Sep 2016 14:24:44 +0000 (09:24 -0500)]
usb: musb: Fix tusb6010 compile error on blackfin

We have CONFIG_BLACKFIN ifdef redefining all musb registers in
musb_regs.h and tusb6010.h is never included causing a build
error with blackfin-allmodconfig and COMPILE_TEST.

Let's fix the issue by not building tusb6010 if CONFIG_BLACKFIN
is selected.

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agoperf/x86/amd: Make HW_CACHE_REFERENCES and HW_CACHE_MISSES measure L2
Matt Fleming [Wed, 24 Aug 2016 13:12:08 +0000 (14:12 +0100)]
perf/x86/amd: Make HW_CACHE_REFERENCES and HW_CACHE_MISSES measure L2

While the Intel PMU monitors the LLC when perf enables the
HW_CACHE_REFERENCES and HW_CACHE_MISSES events, these events monitor
L1 instruction cache fetches (0x0080) and instruction cache misses
(0x0081) on the AMD PMU.

This is extremely confusing when monitoring the same workload across
Intel and AMD machines, since parameters like,

  $ perf stat -e cache-references,cache-misses

measure completely different things.

Instead, make the AMD PMU measure instruction/data cache and TLB fill
requests to the L2 and instruction/data cache and TLB misses in the L2
when HW_CACHE_REFERENCES and HW_CACHE_MISSES are enabled,
respectively. That way the events measure unified caches on both
platforms.

Signed-off-by: Matt Fleming <matt@codeblueprint.co.uk>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: <stable@vger.kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1472044328-21302-1-git-send-email-matt@codeblueprint.co.uk
Signed-off-by: Ingo Molnar <mingo@kernel.org>
8 years agoperf/x86/intel/pt: Do validate the size of a kernel address filter
Alexander Shishkin [Thu, 15 Sep 2016 15:13:52 +0000 (18:13 +0300)]
perf/x86/intel/pt: Do validate the size of a kernel address filter

Right now, the kernel address filters in PT are prone to integer overflow
that may happen in adding filter's size to its offset to obtain the end
of the range. Such an overflow would also throw a #GP in the PT event
configuration path.

Fix this by explicitly validating the result of this calculation.

Reported-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: stable@vger.kernel.org # v4.7
Cc: stable@vger.kernel.org#v4.7
Cc: vince@deater.net
Link: http://lkml.kernel.org/r/20160915151352.21306-4-alexander.shishkin@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
8 years agoperf/x86/intel/pt: Fix kernel address filter's offset validation
Alexander Shishkin [Thu, 15 Sep 2016 15:13:51 +0000 (18:13 +0300)]
perf/x86/intel/pt: Fix kernel address filter's offset validation

The kernel_ip() filter is used mostly by the DS/LBR code to look at the
branch addresses, but Intel PT also uses it to validate the address
filter offsets for kernel addresses, for which it is not sufficient:
supplying something in bits 64:48 that's not a sign extension of the lower
address bits (like 0xf00d000000000000) throws a #GP.

This patch adds address validation for the user supplied kernel filters.

Reported-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: stable@vger.kernel.org # v4.7
Cc: stable@vger.kernel.org#v4.7
Cc: vince@deater.net
Link: http://lkml.kernel.org/r/20160915151352.21306-3-alexander.shishkin@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
8 years agoperf/x86/intel/pt: Fix an off-by-one in address filter configuration
Alexander Shishkin [Thu, 15 Sep 2016 15:13:50 +0000 (18:13 +0300)]
perf/x86/intel/pt: Fix an off-by-one in address filter configuration

PT address filter configuration requires that a range is specified by
its first and last address, but at the moment we're obtaining the end
of the range by adding user specified size to its start, which is off
by one from what it actually needs to be.

Fix this and make sure that zero-sized filters don't pass the filter
validation.

Reported-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: stable@vger.kernel.org # v4.7
Cc: stable@vger.kernel.org#v4.7
Cc: vince@deater.net
Link: http://lkml.kernel.org/r/20160915151352.21306-2-alexander.shishkin@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
8 years agoinclude: extcon: Fix compilation error caused because of incomplete merge
Kishon Vijay Abraham I [Fri, 16 Sep 2016 06:49:07 +0000 (12:19 +0530)]
include: extcon: Fix compilation error caused because of incomplete merge

Fix the following compilation error caused due to incomplete merge. This is
observed if CONFIG_EXTCON is not set.

In file included from ./include/linux/mfd/palmas.h:23:0,
                 from drivers/input/misc/palmas-pwrbutton.c:22:
./include/linux/extcon.h: In function ‘extcon_sync’:
./include/linux/extcon.h:361:1: error: expected declaration specifiers before ‘<<’ token
./include/linux/extcon.h:370:1: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘{’ token
./include/linux/extcon.h:376:1: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘>>’ token
./include/linux/extcon.h:381:1: error: expected declaration specifiers before ‘<<’ token
./include/linux/extcon.h:390:1: error: expected declaration specifiers or ‘...’ before ‘==’ token
./include/linux/extcon.h:476:11: warning: ‘struct extcon_specific_cable_nb’ declared inside parameter list [enabled by default]
./include/linux/extcon.h:476:11: warning: its scope is only this definition or declaration, which is probably not what you want [enabled by default]
./include/linux/extcon.h:474:19: error: storage class specified for parameter ‘extcon_register_interest’
./include/linux/extcon.h:474:19: warning: parameter ‘extcon_register_interest’ declared ‘inline’ [enabled by default]
./include/linux/extcon.h:477:1: warning: ‘always_inline’ attribute ignored [-Wattributes]
./include/linux/extcon.h:474:19: error: ‘no_instrument_function’ attribute applies only to functions
./include/linux/extcon.h:477:1: error: expected ‘;’, ‘,’ or ‘)’ before ‘{’ token

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agoPM / runtime: Use _rcuidle for runtime suspend tracepoints
Paul E. McKenney [Tue, 26 Apr 2016 17:42:25 +0000 (10:42 -0700)]
PM / runtime: Use _rcuidle for runtime suspend tracepoints

Further testing with false negatives suppressed by commit 293e2421fe25
("rcu: Remove superfluous versions of rcu_read_lock_sched_held()")
identified a few more unprotected uses of RCU from the idle loop.
Because RCU actively ignores idle-loop code (for energy-efficiency
reasons, among other things), using RCU from the idle loop can result
in too-short grace periods, in turn resulting in arbitrary misbehavior.

The affected function is rpm_suspend().

The resulting lockdep-RCU splat is as follows:

------------------------------------------------------------------------

Warning from omap3

===============================
[ INFO: suspicious RCU usage. ]
4.6.0-rc5-next-20160426+ #1112 Not tainted
-------------------------------
include/trace/events/rpm.h:63 suspicious rcu_dereference_check() usage!

other info that might help us debug this:

RCU used illegally from idle CPU!
rcu_scheduler_active = 1, debug_locks = 0
RCU used illegally from extended quiescent state!
1 lock held by swapper/0/0:
 #0:  (&(&dev->power.lock)->rlock){-.-...}, at: [<c052ee24>] __pm_runtime_suspend+0x54/0x84

stack backtrace:
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.6.0-rc5-next-20160426+ #1112
Hardware name: Generic OMAP36xx (Flattened Device Tree)
[<c0110308>] (unwind_backtrace) from [<c010c3a8>] (show_stack+0x10/0x14)
[<c010c3a8>] (show_stack) from [<c047fec8>] (dump_stack+0xb0/0xe4)
[<c047fec8>] (dump_stack) from [<c052d7b4>] (rpm_suspend+0x604/0x7e4)
[<c052d7b4>] (rpm_suspend) from [<c052ee34>] (__pm_runtime_suspend+0x64/0x84)
[<c052ee34>] (__pm_runtime_suspend) from [<c04bf3bc>] (omap2_gpio_prepare_for_idle+0x5c/0x70)
[<c04bf3bc>] (omap2_gpio_prepare_for_idle) from [<c01255e8>] (omap_sram_idle+0x140/0x244)
[<c01255e8>] (omap_sram_idle) from [<c0126b48>] (omap3_enter_idle_bm+0xfc/0x1ec)
[<c0126b48>] (omap3_enter_idle_bm) from [<c0601db8>] (cpuidle_enter_state+0x80/0x3d4)
[<c0601db8>] (cpuidle_enter_state) from [<c0183c74>] (cpu_startup_entry+0x198/0x3a0)
[<c0183c74>] (cpu_startup_entry) from [<c0b00c0c>] (start_kernel+0x354/0x3c8)
[<c0b00c0c>] (start_kernel) from [<8000807c>] (0x8000807c)

------------------------------------------------------------------------

Reported-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Tested-by: Guenter Roeck <linux@roeck-us.net>
[ rjw: Subject ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
8 years agoaio: mark AIO pseudo-fs noexec
Jann Horn [Thu, 15 Sep 2016 22:31:22 +0000 (00:31 +0200)]
aio: mark AIO pseudo-fs noexec

This ensures that do_mmap() won't implicitly make AIO memory mappings
executable if the READ_IMPLIES_EXEC personality flag is set.  Such
behavior is problematic because the security_mmap_file LSM hook doesn't
catch this case, potentially permitting an attacker to bypass a W^X
policy enforced by SELinux.

I have tested the patch on my machine.

To test the behavior, compile and run this:

    #define _GNU_SOURCE
    #include <unistd.h>
    #include <sys/personality.h>
    #include <linux/aio_abi.h>
    #include <err.h>
    #include <stdlib.h>
    #include <stdio.h>
    #include <sys/syscall.h>

    int main(void) {
        personality(READ_IMPLIES_EXEC);
        aio_context_t ctx = 0;
        if (syscall(__NR_io_setup, 1, &ctx))
            err(1, "io_setup");

        char cmd[1000];
        sprintf(cmd, "cat /proc/%d/maps | grep -F '/[aio]'",
            (int)getpid());
        system(cmd);
        return 0;
    }

In the output, "rw-s" is good, "rwxs" is bad.

Signed-off-by: Jann Horn <jann@thejh.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agoMerge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Thu, 15 Sep 2016 22:15:41 +0000 (15:15 -0700)]
Merge tag 'for-linus' of git://git./virt/kvm/kvm

Pull kvm fix from Paolo Bonzini:
 "One fix for an x86 regression in VM migration, mostly visible with
  Windows because it uses RTC periodic interrupts"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  kvm: x86: correctly reset dest_map->vector when restoring LAPIC state

8 years agovfs: cap dedupe request structure size at PAGE_SIZE
Darrick J. Wong [Thu, 15 Sep 2016 03:20:44 +0000 (20:20 -0700)]
vfs: cap dedupe request structure size at PAGE_SIZE

Kirill A Shutemov reports that the kernel doesn't try to cap dest_count
in any way, and uses the number to allocate kernel memory.  This causes
high order allocation warnings in the kernel log if someone passes in a
big enough value.  We should clamp the allocation at PAGE_SIZE to avoid
stressing the VM.

The two existing users of the dedupe ioctl never send more than 120
requests, so we can safely clamp dest_range at PAGE_SIZE, because with
4k pages we can handle up to 127 dedupe candidates.  Given the max
extent length of 16MB, we can end up doing 2GB of IO which is plenty.

[ Note: the "offsetof()" can't overflow, because 'count' is just a
  16-bit integer.  That's not obvious in the limited context of the
  patch, so I'm noting it here because it made me go look.  - Linus ]

Reported-by: "Kirill A. Shutemov" <kirill@shutemov.name>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agovfs: fix return type of ioctl_file_dedupe_range
Darrick J. Wong [Thu, 15 Sep 2016 03:20:00 +0000 (20:20 -0700)]
vfs: fix return type of ioctl_file_dedupe_range

All the VFS functions in the dedupe ioctl path return int status, so
the ioctl handler ought to as well.

Found by Coverity, CID 1350952.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agoMerge branch 'for-linus' of git://git.kernel.dk/linux-block
Linus Torvalds [Thu, 15 Sep 2016 20:22:59 +0000 (13:22 -0700)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:
 "A set of fixes for the current series in the realm of block.

  Like the previous pull request, the meat of it are fixes for the nvme
  fabrics/target code.  Outside of that, just one fix from Gabriel for
  not doing a queue suspend if we didn't get the admin queue setup in
  the first place"

* 'for-linus' of git://git.kernel.dk/linux-block:
  nvme-rdma: add back dependency on CONFIG_BLOCK
  nvme-rdma: fix null pointer dereference on req->mr
  nvme-rdma: use ib_client API to detect device removal
  nvme-rdma: add DELETING queue flag
  nvme/quirk: Add a delay before checking device ready for memblaze device
  nvme: Don't suspend admin queue that wasn't created
  nvme-rdma: destroy nvme queue rdma resources on connect failure
  nvme_rdma: keep a ref on the ctrl during delete/flush
  iw_cxgb4: block module unload until all ep resources are released
  iw_cxgb4: call dev_put() on l2t allocation failure

8 years agofix minor infoleak in get_user_ex()
Al Viro [Thu, 15 Sep 2016 01:35:29 +0000 (02:35 +0100)]
fix minor infoleak in get_user_ex()

get_user_ex(x, ptr) should zero x on failure.  It's not a lot of a leak
(at most we are leaking uninitialized 64bit value off the kernel stack,
and in a fairly constrained situation, at that), but the fix is trivial,
so...

Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
[ This sat in different branch from the uaccess fixes since mid-August ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agokvm: x86: correctly reset dest_map->vector when restoring LAPIC state
Paolo Bonzini [Wed, 14 Sep 2016 21:39:12 +0000 (23:39 +0200)]
kvm: x86: correctly reset dest_map->vector when restoring LAPIC state

When userspace sends KVM_SET_LAPIC, KVM schedules a check between
the vCPU's IRR and ISR and the IOAPIC redirection table, in order
to re-establish the IOAPIC's dest_map (the list of CPUs servicing
the real-time clock interrupt with the corresponding vectors).

However, __rtc_irq_eoi_tracking_restore_one was forgetting to
set dest_map->vectors.  Because of this, the IOAPIC did not process
the real-time clock interrupt EOI, ioapic->rtc_status.pending_eoi
got stuck at a non-zero value, and further RTC interrupts were
reported to userspace as coalesced.

Fixes: 9e4aabe2bb3454c83dac8139cf9974503ee044db
Fixes: 4d99ba898dd0c521ca6cdfdde55c9b58aea3cb3d
Cc: stable@vger.kernel.org
Cc: Joerg Roedel <jroedel@suse.de>
Cc: David Gilbert <dgilbert@redhat.com>
Reviewed-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
8 years agoMerge tag 'phy-for-4.9-updated_v1' of git://git.kernel.org/pub/scm/linux/kernel/git...
Greg Kroah-Hartman [Thu, 15 Sep 2016 13:59:30 +0000 (15:59 +0200)]
Merge tag 'phy-for-4.9-updated_v1' of git://git./linux/kernel/git/kishon/linux-phy into usb-testing

Kishon writes:

phy: for 4.9 (with extcon merge resolution)

updated tag for 4.9 based on usb-next along with extcon merge
resolution

phy updates includes:
*) phy driver for USB 3.0 PHY on Northstar
*) phy driver for Rockchip usb2phy
*) phy driver for the Rockchip SoC internal PCIe PHY
*) phy driver for USB Type-C PHY on rk3399
*) phy_reset() API
*) support for Allwinner A64 usb phy, usb2 phy in r8a7796
*) Fixes in twl4030-usb, tegra phy, sun4i-usb phy, da8xx-usb phy
   and omap-usb2 phy
*) other misc cleanups

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
8 years agoMerge branch 'next' into resolution
Kishon Vijay Abraham I [Thu, 15 Sep 2016 10:16:11 +0000 (15:46 +0530)]
Merge branch 'next' into resolution

Conflicts:
drivers/extcon/extcon-adc-jack.c
drivers/extcon/extcon-arizona.c
drivers/extcon/extcon-gpio.c
include/linux/extcon.h

8 years agoMAINTAINERS: add tree entry for USB Serial
Johan Hovold [Wed, 14 Sep 2016 12:17:41 +0000 (14:17 +0200)]
MAINTAINERS: add tree entry for USB Serial

Add tree entry for USB Serial.

Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agoARM: keystone: defconfig: Fix USB configuration
Roger Quadros [Wed, 17 Aug 2016 10:44:50 +0000 (13:44 +0300)]
ARM: keystone: defconfig: Fix USB configuration

Simply enabling CONFIG_KEYSTONE_USB_PHY doesn't work anymore
as it depends on CONFIG_NOP_USB_XCEIV. We need to enable
that as well.

This fixes USB on Keystone boards from v4.8-rc1 onwards.

Signed-off-by: Roger Quadros <rogerq@ti.com>
Acked-by: Santosh Shilimkar <ssantosh@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
8 years agoperf/x86/intel: Don't disable "intel_bts" around "intel" event batching
Alexander Shishkin [Thu, 15 Sep 2016 08:22:33 +0000 (11:22 +0300)]
perf/x86/intel: Don't disable "intel_bts" around "intel" event batching

At the moment, intel_bts events get disabled from intel PMU's disable
callback, which includes event scheduling transactions of said PMU,
which have nothing to do with intel_bts events.

We do want to keep intel_bts events off inside the PMI handler to
avoid filling up their buffer too soon.

This patch moves intel_bts enabling/disabling directly to the PMI
handler.

Reported-by: Vince Weaver <vincent.weaver@maine.edu>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: vince@deater.net
Link: http://lkml.kernel.org/r/20160915082233.11065-1-alexander.shishkin@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
8 years agoMerge tag 'usb-ci-v4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/peter...
Greg Kroah-Hartman [Thu, 15 Sep 2016 08:38:30 +0000 (10:38 +0200)]
Merge tag 'usb-ci-v4.9-rc1' of git://git./linux/kernel/git/peter.chen/usb into usb-testing

Peter writes:

Most of them are refine patches, only new feature is
disable io watchdog for chipidea platform.

8 years agopowerpc/powernv/pci: Fix missed TCE invalidations that should fallback to OPAL
Michael Ellerman [Thu, 15 Sep 2016 07:03:06 +0000 (17:03 +1000)]
powerpc/powernv/pci: Fix missed TCE invalidations that should fallback to OPAL

In commit f0228c413011 ("powerpc/powernv/pci: Fallback to OPAL for TCE
invalidations"), we added logic to fallback to OPAL for doing TCE
invalidations if we can't do it in Linux.

Ben sent a v2 of the patch, containing these additional call sites, but
I had already applied v1 and didn't notice. So fix them now.

Fixes: f0228c413011 ("powerpc/powernv/pci: Fallback to OPAL for TCE invalidations")
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
8 years agopowerpc/powernv: Detach from PE on releasing PCI device
Gavin Shan [Tue, 6 Sep 2016 06:34:01 +0000 (16:34 +1000)]
powerpc/powernv: Detach from PE on releasing PCI device

The PCI hotplug can be part of EEH error recovery. The @pdn and
the device's PE number aren't removed and added afterwords. The
PE number in @pdn should be set to an invalid one. Otherwise, the
PE's device count is decreased on removing devices while failing
to be increased on adding devices. It leads to unbalanced PE's
device count and make normal PCI hotplug path broken.

Fixes: c5f7700bbd2e ("powerpc/powernv: Dynamically release PE")
Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
8 years agoMerge tag 'pci-v4.8-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Linus Torvalds [Wed, 14 Sep 2016 21:06:30 +0000 (14:06 -0700)]
Merge tag 'pci-v4.8-fixes-2' of git://git./linux/kernel/git/helgaas/pci

Pull PCI fixes from Bjorn Helgaas:
 "Here are two changes for v4.8.  The first fixes a "[Firmware Bug]: reg
  0x10: invalid BAR (can't size)" warning on Haswell, and the second
  fixes a problem in some new runtime suspend functionality we merged
  for v4.8.  Summary:

  Enumeration:
    Mark Haswell Power Control Unit as having non-compliant BARs (Bjorn Helgaas)

  Power management:
    Fix bridge_d3 update on device removal (Lukas Wunner)"

* tag 'pci-v4.8-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  PCI: Fix bridge_d3 update on device removal
  PCI: Mark Haswell Power Control Unit as having non-compliant BARs

8 years agoMerge branch 'dt/irq-fix' into fixes
Arnd Bergmann [Wed, 14 Sep 2016 20:47:36 +0000 (22:47 +0200)]
Merge branch 'dt/irq-fix' into fixes

* dt/irq-fix:
  arm64: dts: Fix broken architected timer interrupt trigger

8 years agoarm64: dts: Fix broken architected timer interrupt trigger
Marc Zyngier [Mon, 1 Aug 2016 09:54:16 +0000 (10:54 +0100)]
arm64: dts: Fix broken architected timer interrupt trigger

The ARM architected timer specification mandates that the interrupt
associated with each timer is level triggered (which corresponds to
the "counter >= comparator" condition).

A number of DTs are being remarkably creative, declaring the interrupt
to be edge triggered. A quick look at the TRM for the corresponding ARM
CPUs clearly shows that this is wrong, and I've corrected those.
For non-ARM designs (and in the absence of a publicly available TRM),
I've made them active low as well, which can't be completely wrong
as the GIC cannot disinguish between level low and level high.

The respective maintainers are of course welcome to prove me wrong.

While I was at it, I took the liberty to fix a couple of related issue,
such as some spurious affinity bits on ThunderX, and their complete
absence on ls1043a (both of which seem to be related to copy-pasting
from other DTs).

Acked-by: Duc Dang <dhdang@apm.com>
Acked-by: Carlo Caione <carlo@endlessm.com>
Acked-by: Michal Simek <michal.simek@xilinx.com>
Acked-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Acked-by: Dinh Nguyen <dinguyen@opensource.altera.com>
Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
8 years agoARM: multi_v7_defconfig: update XILINX_VDMA
Fabian Frederick [Mon, 15 Aug 2016 17:34:44 +0000 (19:34 +0200)]
ARM: multi_v7_defconfig: update XILINX_VDMA

Commit fde57a7c4474
("dmaengine: xilinx: Rename driver and config")

renamed config XILINX_VDMA to config XILINX_DMA
Update defconfig accordingly.

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
8 years agoMerge tag 'usb-for-v4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb...
Greg Kroah-Hartman [Wed, 14 Sep 2016 18:37:50 +0000 (20:37 +0200)]
Merge tag 'usb-for-v4.9' of git://git./linux/kernel/git/balbi/usb into usb-next

Felipe writes:

usb: patches for v4.9 merge window

This time around we have 92 non-merge commits. Most
of the changes are in drivers/usb/gadget (40.3%)
with drivers/usb/gadget/function being the most
active directory (27.2%).

As for UDC drivers, only dwc3 (26.5%) and dwc2
(12.7%) have really been active.

The most important changes for dwc3 are better
support for scatterlist and, again, throughput
improvements. While on dwc2 got some minor stability
fixes related to soft reset and FIFO usage.

Felipe Tonello has done some good work fixing up our
f_midi gadget and Tal Shorer has implemented a nice
API change for our ULPI bus.

Apart from these, we have our usual set of
non-critical fixes, spelling fixes, build warning
fixes, etc.

8 years agoMerge branch 'uaccess-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Linus Torvalds [Wed, 14 Sep 2016 16:35:05 +0000 (09:35 -0700)]
Merge branch 'uaccess-fixes' of git://git./linux/kernel/git/viro/vfs

Pull uaccess fixes from Al Viro:
 "Fixes for broken uaccess primitives - mostly lack of proper zeroing
  in copy_from_user()/get_user()/__get_user(), but for several
  architectures there's more (broken clear_user() on frv and
  strncpy_from_user() on hexagon)"

* 'uaccess-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (28 commits)
  avr32: fix copy_from_user()
  microblaze: fix __get_user()
  microblaze: fix copy_from_user()
  m32r: fix __get_user()
  blackfin: fix copy_from_user()
  sparc32: fix copy_from_user()
  sh: fix copy_from_user()
  sh64: failing __get_user() should zero
  score: fix copy_from_user() and friends
  score: fix __get_user/get_user
  s390: get_user() should zero on failure
  ppc32: fix copy_from_user()
  parisc: fix copy_from_user()
  openrisc: fix copy_from_user()
  nios2: fix __get_user()
  nios2: copy_from_user() should zero the tail of destination
  mn10300: copy_from_user() should zero on access_ok() failure...
  mn10300: failing __get_user() and get_user() should zero
  mips: copy_from_user() must zero the destination on access_ok() failure
  ARC: uaccess: get_user to zero out dest in cause of fault
  ...

8 years agoMerge tag 'for-linus-4.8b-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Wed, 14 Sep 2016 15:42:51 +0000 (08:42 -0700)]
Merge tag 'for-linus-4.8b-rc6-tag' of git://git./linux/kernel/git/xen/tip

Pull xen regression fix from David Vrabel:
 "Fix SMP boot in arm guests"

* tag 'for-linus-4.8b-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  arm/xen: fix SMP guests boot

8 years agoarm/xen: fix SMP guests boot
Vitaly Kuznetsov [Thu, 8 Sep 2016 09:48:28 +0000 (11:48 +0200)]
arm/xen: fix SMP guests boot

Commit 88e957d6e47f ("xen: introduce xen_vcpu_id mapping") broke SMP
ARM guests on Xen. When FIFO-based event channels are in use (this is
the default), evtchn_fifo_alloc_control_block() is called on
CPU_UP_PREPARE event and this happens before we set up xen_vcpu_id
mapping in xen_starting_cpu. Temporary fix the issue by setting direct
Linux CPU id <-> Xen vCPU id mapping for all possible CPUs at boot. We
don't currently support kexec/kdump on Xen/ARM so these ids always
match.

In future, we have several ways to solve the issue, e.g.:

- Eliminate all hypercalls from CPU_UP_PREPARE, do them from the
  starting CPU. This can probably be done for both x86 and ARM and, if
  done, will allow us to get Xen's idea of vCPU id from CPUID/MPIDR on
  the starting CPU directly, no messing with ACPI/device tree
  required.

- Save vCPU id information from ACPI/device tree on ARM and use it to
  initialize xen_vcpu_id mapping. This is the same trick we currently
  do on x86.

Reported-by: Julien Grall <julien.grall@arm.com>
Tested-by: Wei Chen <Wei.Chen@arm.com>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Acked-by: Stefano Stabellini <sstabellini@kernel.org>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
8 years agocpu/hotplug: Include linux/types.h in linux/cpuhotplug.h
Paul Burton [Wed, 14 Sep 2016 10:00:26 +0000 (11:00 +0100)]
cpu/hotplug: Include linux/types.h in linux/cpuhotplug.h

The linux/cpuhotplug.h header makes use of the bool type, but wasn't
including linux/types.h to ensure that type has been defined. Fix this
by including linux/types.h in preparation for including
linux/cpuhotplug.h in a file that doesn't do so already.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: Richard Cochran <rcochran@linutronix.de>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Anna-Maria Gleixner <anna-maria@linutronix.de>
Link: http://lkml.kernel.org/r/20160914100027.20945-1-paul.burton@imgtec.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
8 years agommc: omap: Initialize dma_slave_config to avoid random data in it's fields
Peter Ujfalusi [Wed, 14 Sep 2016 11:21:54 +0000 (14:21 +0300)]
mmc: omap: Initialize dma_slave_config to avoid random data in it's fields

It is wrong to use uninitialized dma_slave_config and configure only
certain fields as the DMAengine driver might look at non initialized
(random data) fields and tries to interpret it.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
8 years agommc: omap_hsmmc: Initialize dma_slave_config to avoid random data
Peter Ujfalusi [Wed, 14 Sep 2016 11:22:07 +0000 (14:22 +0300)]
mmc: omap_hsmmc: Initialize dma_slave_config to avoid random data

It is wrong to use uninitialized dma_slave_config and configure only
certain fields as the DMAengine driver might look at non initialized
(random data) fields and tries to interpret it.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
8 years agodrm/i915: Ignore OpRegion panel type except on select machines
Ville Syrjälä [Tue, 13 Sep 2016 09:22:19 +0000 (12:22 +0300)]
drm/i915: Ignore OpRegion panel type except on select machines

Turns out
commit a05628195a0d ("drm/i915: Get panel_type from OpRegion panel
details") has regressed quite a few machines. So it looks like we
can't use the panel type from OpRegion on all systems, and yet we
absolutely must use it on some specific systems.

Despite trying, I was unable to find any automagic way to determine
if the OpRegion panel type is respectable or not. The only glimmer
of hope I had was bit 8 in the SCIC response, but that turned out to
not work either (it was always 0 on both types of systems).

So, to fix the regressions without breaking the machine we know to need
the OpRegion panel type, let's just add a quirk for this. Only specific
machines known to require the OpRegion panel type will therefore use
it. Everyone else will fall bck to the VBT panel type.

The only known machine so far is a "Conrac GmbH IX45GM2". The PCI
subsystem ID on this machine is just a generic 8086:2a42, so of no use.
Instead we'll go with a DMI match.

I suspect we can now also revert
commit aeddda06c1a7 ("drm/i915: Ignore panel type from OpRegion on SKL")
but let's leave that to a separate patch.

v2: Do the DMI match in the opregion code directly, as dev_priv->quirks
    gets populated too late

Cc: Rob Kramer <rob@solution-space.com>
Cc: Martin van Es <martin@mrvanes.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Dave Airlie <airlied@linux.ie>
Cc: Marco Krüger <krgsch@gmail.com>
Cc: Sean Greenslade <sean@seangreenslade.com>
Cc: Trudy Tective <bertslany@gmail.com>
Cc: Robin Müller <rm1990@gmx.de>
Cc: Alexander Kobel <a-kobel@a-kobel.de>
Cc: Alexey Shumitsky <alexey.shumitsky@gmail.com>
Cc: Emil Andersen Lauridsen <mine809@gmail.com>
Cc: oceans112@gmail.com
Cc: James Hogan <james@albanarts.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: stable@vger.kernel.org
References: https://lists.freedesktop.org/archives/intel-gfx/2016-August/105545.html
References: https://lists.freedesktop.org/archives/dri-devel/2016-August/116888.html
References: https://lists.freedesktop.org/archives/intel-gfx/2016-June/098826.html
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=94825
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=97060
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=97443
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=97363
Fixes: a05628195a0d ("drm/i915: Get panel_type from OpRegion panel details")
Tested-by: Marco Krüger <krgsch@gmail.com>
Tested-by: Alexey Shumitsky <alexey.shumitsky@gmail.com>
Tested-by: Sean Greenslade <sean@seangreenslade.com>
Tested-by: Emil Andersen Lauridsen <mine809@gmail.com>
Tested-by: Robin Müller <rm1990@gmx.de>
Tested-by: oceans112@gmail.com
Tested-by: Rob Kramer <rob@solution-space.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1473758539-21565-1-git-send-email-ville.syrjala@linux.intel.com
References: http://patchwork.freedesktop.org/patch/msgid/1473602239-15855-1-git-send-email-adrienverge@gmail.com
Acked-by: Jani Nikula <jani.nikula@intel.com>
(cherry picked from commit c8ebfad7a063fe665417fa0eeb0da7cfe987d8ed)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
8 years agoRevert "drm/i915/psr: Make idle_frames sensible again"
Rodrigo Vivi [Thu, 8 Sep 2016 00:42:31 +0000 (17:42 -0700)]
Revert "drm/i915/psr: Make idle_frames sensible again"

This reverts

commit 1c80c25fb622973dd135878e98d172be20859049
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Wed May 18 18:47:12 2016 +0200

    drm/i915/psr: Make idle_frames sensible again

There are panels that needs 4 idle frames before entering PSR,
but VBT is unproperly set.

Also lately it was identified that idle frame count calculated at HW
can be off by 1, what makes the minimum of 2, at least.

Without the current vbt+1 we are with the risk of having HW calculating
0 idle frames and entering PSR when it shouldn't. Regardless the lack
of link training.

[Jani: there is some disagreement on the explanation, but the commit
regresses so revert it is.]

References: http://marc.info/?i=20160904191153.GA2328@light.dominikbrodowski.net
Cc: Dominik Brodowski <linux@dominikbrodowski.net>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Daniel Vetter <daniel.vetter@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Fixes: 1c80c25fb622 ("drm/i915/psr: Make idle_frames sensible again")
Cc: drm-intel-fixes@lists.freedesktop.org # v4.8-rc1+
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1473295351-8766-1-git-send-email-rodrigo.vivi@intel.com
(cherry picked from commit 40918e0bb81be02f507a941f8b2741f0dc1771b0)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
8 years agodrm/i915: Restore lost "Initialized i915" welcome message
Chris Wilson [Thu, 25 Aug 2016 07:23:14 +0000 (08:23 +0100)]
drm/i915: Restore lost "Initialized i915" welcome message

A side effect of removing the midlayer from driver loading was the loss
of a useful message announcing to userspace that i915 had successfully
started, e.g.:

[drm] Initialized i915 1.6.0 20160425 for 0000:00:02.0 on minor 0

Reported-by: Timo Aaltonen <tjaalton@ubuntu.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Fixes: 8f460e2c78f2 ("drm/i915: Demidlayer driver loading")
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: drm-intel-fixes@lists.freedesktop.org
Link: http://patchwork.freedesktop.org/patch/msgid/20160825072314.17402-1-chris@chris-wilson.co.uk
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
(cherry picked from commit bc5ca47c0af4f949ba889e666b7da65569e36093)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
8 years agophy-twl4030-usb: initialize charging-related stuff via pm_runtime
Andreas Kemnade [Wed, 24 Aug 2016 22:27:59 +0000 (00:27 +0200)]
phy-twl4030-usb: initialize charging-related stuff via pm_runtime

twl4030_phy_power_on() initializes some bits which are required for
charging. As they are not set in twl4030_usb_runtime_resume()
a call to pm_runtime_get_sync() is not sufficient to enable charging.

This patch moves the initialization to twl4030_usb_runtime_resume()
so everything needed for charging is initialized upon
pm_runtime_get_sync().

That also gives improved possibilities to debug problems in that area
because the relevant parts can be checked separately. Charging can be
enabled without having the musb subsystem active.

As a side effect this hides some bugs in musb which causes
unbalanced calls to phy_power_off()/phy_power_on() so that
phy->power_count becomes -1.

The result is that e.g. the GTA04 phone (dm3730 + twl4030) works
finally as a usb gadget again and charging is working.

Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
8 years agophy-twl4030-usb: better handle musb_mailbox() failure
Andreas Kemnade [Mon, 22 Aug 2016 19:24:22 +0000 (21:24 +0200)]
phy-twl4030-usb: better handle musb_mailbox() failure

setting twl->linkstat = MUSB_UNKNOWN upon error in musb_mailbox as
introduced in
commit 12b7db2bf8b8 ("usb: musb: Return error value from musb_mailbox")
causes twl4030_usb_irq() to not detect a state change form cable connected
to cable disconnected after such an error so that
pm_runtime_put_autosuspend() will not be called and the usage counter
gets unbalanced. Such errors happen e.g. if the omap2430 module is not
(yet) loaded during plug/unplug events.

This patch introduces a flag instead that indicates whether there is
information for the musb_mailbox pending and calls musb_mailbox() if
that flag is set.

Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
8 years agousb: chipidea: udc: Use the preferred form for passing a size of a struct
Fabio Estevam [Thu, 8 Sep 2016 12:34:32 +0000 (09:34 -0300)]
usb: chipidea: udc: Use the preferred form for passing a size of a struct

According to Documentation/CodingStyle:

"The preferred form for passing a size of a struct is the following:

p = kmalloc(sizeof(*p), ...);
"
, so do as suggested to improve readability.

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
8 years agousb: chipidea: udc: Fit into a single line
Fabio Estevam [Thu, 8 Sep 2016 12:34:31 +0000 (09:34 -0300)]
usb: chipidea: udc: Fit into a single line

No need to split the dma_pool_zalloc() line into two as it can
perfectly fit into a single line.

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
8 years agousb: chipidea: udc: Use dma_pool_zalloc()
Fabio Estevam [Thu, 8 Sep 2016 12:34:30 +0000 (09:34 -0300)]
usb: chipidea: udc: Use dma_pool_zalloc()

We can make the code simpler by using dma_pool_zalloc() instead
of calling dma_pool_alloc() and then a memset().

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
8 years agousb: chipidea: host: disable io watchdog
Lucas Stach [Mon, 15 Aug 2016 14:09:07 +0000 (16:09 +0200)]
usb: chipidea: host: disable io watchdog

The Chipidea EHCI core seems to behave sanely and doesn't need
the IO watchdog. This kills off 10 non-deferrable wakeup events
per second when the controller is otherwise idle.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Tested-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
8 years agousb: chipidea: udc: Use direction flags consequently
Stefan Wahren [Thu, 11 Aug 2016 17:19:13 +0000 (17:19 +0000)]
usb: chipidea: udc: Use direction flags consequently

This driver make assumptions about the value of the direction flags.
So better use them in comparisons to improve the readability.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
8 years agousb: chipidea: imx: set over current polarity per dts setting
Li Jun [Wed, 20 Jul 2016 08:02:42 +0000 (16:02 +0800)]
usb: chipidea: imx: set over current polarity per dts setting

imx usb over current polarity is low active by default, with
over-current-active-high property added, user can config it to be high
active. Meanwhile keep this setting unchanged for existing platforms
so new platform must set the right value for active low by its usbmisc
init function if over current is enabled.

Signed-off-by: Li Jun <jun.li@nxp.com>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
8 years agodoc: usb: ci-hdrc-usb2: add property over-current-active-high
Li Jun [Wed, 20 Jul 2016 08:02:41 +0000 (16:02 +0800)]
doc: usb: ci-hdrc-usb2: add property over-current-active-high

Adding over-current-active-high to indicate the over current flag
is high active as typically we use active low for over current
polarity.

Signed-off-by: Li Jun <jun.li@nxp.com>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
Acked-by: Rob Herring <robh@kernel.org>
8 years agodoc: usb: usbmisc-imx: add imx7d compatible string
Li Jun [Wed, 20 Jul 2016 08:02:40 +0000 (16:02 +0800)]
doc: usb: usbmisc-imx: add imx7d compatible string

Add compatible string for imx7d-usbmisc.

Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Li Jun <jun.li@nxp.com>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
8 years agousb: chipidea: udc: Don't flush endpoint fifo twice
Stefan Wahren [Sat, 9 Jul 2016 14:16:39 +0000 (14:16 +0000)]
usb: chipidea: udc: Don't flush endpoint fifo twice

The endpoint fifo is already flushed in _ep_nuke so there
is no need to flush it twice.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
8 years agousb: chipidea: udc: move write barrier into hw_ep_prime
Stefan Wahren [Sat, 9 Jul 2016 14:16:38 +0000 (14:16 +0000)]
usb: chipidea: udc: move write barrier into hw_ep_prime

Since there should be a write barrier before every call of
hw_ep_prime we could move it into hw_ep_prime.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
8 years agopowerpc/powernv: Fix the state of root PE
Gavin Shan [Tue, 13 Sep 2016 06:40:24 +0000 (16:40 +1000)]
powerpc/powernv: Fix the state of root PE

The PE for root bus (root PE) can be removed because of PCI hot
remove in EEH recovery path for fenced PHB error. We need update
@phb->root_pe_populated accordingly so that the root PE can be
populated again in forthcoming PCI hot add path. Also, the PE
shouldn't be destroyed as it's global and reserved resource.

Fixes: c5f7700bbd2e ("powerpc/powernv: Dynamically release PE")
Reported-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com>
Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
8 years agoavr32: fix copy_from_user()
Al Viro [Fri, 9 Sep 2016 23:28:23 +0000 (19:28 -0400)]
avr32: fix copy_from_user()

really ugly, but apparently avr32 compilers turns access_ok() into
something so bad that they want it in assembler.  Left that way,
zeroing added in inline wrapper.

Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
8 years agomicroblaze: fix __get_user()
Al Viro [Fri, 9 Sep 2016 23:23:33 +0000 (19:23 -0400)]
microblaze: fix __get_user()

Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
8 years agomicroblaze: fix copy_from_user()
Al Viro [Fri, 9 Sep 2016 23:22:34 +0000 (19:22 -0400)]
microblaze: fix copy_from_user()

Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
8 years agom32r: fix __get_user()
Al Viro [Fri, 9 Sep 2016 23:20:13 +0000 (19:20 -0400)]
m32r: fix __get_user()

Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
8 years agoblackfin: fix copy_from_user()
Al Viro [Fri, 9 Sep 2016 23:16:58 +0000 (19:16 -0400)]
blackfin: fix copy_from_user()

Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
8 years agosparc32: fix copy_from_user()
Al Viro [Mon, 22 Aug 2016 04:23:07 +0000 (00:23 -0400)]
sparc32: fix copy_from_user()

Cc: stable@vger.kernel.org
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
8 years agosh: fix copy_from_user()
Al Viro [Mon, 22 Aug 2016 03:39:47 +0000 (23:39 -0400)]
sh: fix copy_from_user()

Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
8 years agosh64: failing __get_user() should zero
Al Viro [Mon, 22 Aug 2016 03:33:47 +0000 (23:33 -0400)]
sh64: failing __get_user() should zero

It could be done in exception-handling bits in __get_user_b() et.al.,
but the surgery involved would take more knowledge of sh64 details
than I have or _want_ to have.

Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>