This patch fixes a bug in kgd_set_pasid_vmid_mapping(), where the function
only updated the ATC registers (IOMMU) with the new VMID <--> PASID mapping,
but didn't update the IH (Interrupt) registers.

The bug only occurs when using non-HWS mode. In HWS mode, the CP automatically
does the VMID <--> PASID mapping.
Signed-off-by: Ben Goz <ben.goz@amd.com>
Signed-off-by: Oded Gabbay <oded.gabbay@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>

If timeout happens, kgd_hqd_destroy() just returns -ETIME leaving queue
acquired.
It may cause a deadlock, so the patch proposes to release queue before return.

Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Oded Gabbay <oded.gabbay@amd.com>

This patch fixes a bug in DQM, where the MQD of a newly created compute queue
is not loaded to an HQD slot. As a result, the CP never reads packets from this
queue.

This bug happens only in non-HWS (hardware scheduling) mode. In HWS mode, the
CP is responsible of loading MQDs to HQDs slots.
Signed-off-by: Ben Goz <ben.goz@amd.com>
Signed-off-by: Oded Gabbay <oded.gabbay@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>

Signed-off-by: Ben Goz <ben.goz@amd.com>
Signed-off-by: Oded Gabbay <oded.gabbay@amd.com>

Highlights:

- Link order changes in drm/Makefile and drivers/Makefile to fix issue
  when amdkfd, radeon and amd_iommu_v2 are compiled inside the kernel
  image.

- Consider kernel configuration (using #IFDEFs) when radeon initializes
  amdkfd, due to a specific configuration that makes symbol_request()
  return a non-NULL value when a symbol doesn't exists. Rusty Russel
  is helping me to find the root cause, but it may take a while because
  of year-end so I'm sending this as a band-aid solution.

* tag 'amdkfd-fixes-2014-12-30' of git://people.freedesktop.org/~gabbayo/linux:
  drm/radeon: Init amdkfd only if it was compiled
  amdkfd: actually allocate longs for the pasid bitmask
  drm: Put amdkfd before radeon in drm Makefile
  drivers: Move iommu/ before gpu/ in Makefile
  amdkfd: Remove duplicate include
  amdkfd: Fixing topology bug in building sysfs nodes
  amdkfd: Fix accounting of device queues

I've had these since before -rc1, but they missed my last pull
request. Real bug fixes and mostly cc: stable material.

* tag 'drm-intel-next-fixes-2014-12-30' of git://anongit.freedesktop.org/drm-intel:
  drm/i915: add missing rpm ref to i915_gem_pwrite_ioctl
  Revert "drm/i915: Preserve VGACNTR bits from the BIOS"
  drm/i915: Don't call intel_prepare_page_flip() multiple times on gen2-4
  drm/i915: Kill check_power_well() calls

Pull SCSI fixes from James Bottomley:
 "This is a set of three fixes: one to correct an abort path thinko
  causing failures (and a panic) in USB on device misbehaviour, One to
  fix an out of order issue in the fnic driver and one to match discard
  expectations to qemu which otherwise cause Linux to behave badly as a
  guest"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  SCSI: fix regression in scsi_send_eh_cmnd()
  fnic: IOMMU Fault occurs when IO and abort IO is out of order
  sd: tweak discard heuristics to work around QEMU SCSI issue

Pull sound fixes from Takashi Iwai:
 "Nothing too exciting as a new year's start here: most of fixes are for
  ASoC, a boot crash fix on OMAP for deferred probe, a few driver
  specific fixes (Intel, dwc, rockchip, rt5677), in addition to typo
  fixes in kerneldoc comments for PCM"

* tag 'sound-3.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: pcm: Fix kerneldoc for params_*() functions
  ASoC: rockchip: i2s: fix maxburst of dma data to 4
  ASoC: rockchip: i2s: fix error defination of transmit data level
  ASoC: Intel: correct the fixed free block allocation
  ASoC: rt5677: fixed rt5677_dsp_vad_put rt5677_dsp_vad_get panic
  ASoC: Intel: Fix BYTCR machine driver MODULE_ALIAS
  ASoC: Intel: Fix BYTCR firmware name
  ASoC: dwc: Iterate over all channels
  ASoC: dwc: Ensure FIFOs are flushed to prevent channel swap
  ASoC: Intel: Add I2C dependency to two new machines
  ASoC: dapm: Remove snd_soc_of_parse_audio_routing() due to deferred probe

Pull vhost cleanup and virtio bugfix
 "There's a single change here, fixing a vhost bug where vhost
  initialization fails due to used ring alignment check being too
  strict"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  vhost: relax used address alignment
  virtio_ring: document alignment requirements

Pull audit fix from Paul Moore:
 "One audit patch to resolve a panic/oops when recording filenames in
  the audit log, see the mail archive link below.

  The fix isn't as nice as I would like, as it involves an allocate/copy
  of the filename, but it solves the problem and the overhead should
  only affect users who have configured audit rules involving file
  names.

  We'll revisit this issue with future kernels in an attempt to make
  this suck less, but in the meantime I think this fix should go into
  the next release of v3.19-rcX.

  [ https://marc.info/?t=141986927600001&r=1&w=2 ]"

* 'upstream' of git://git.infradead.org/users/pcmoore/audit:
  audit: create private file name copies when auditing inodes

This reverts commit 9d469d03.

It breaks the Chromebook Pixel touchpad (and touchscreen).
Reported-by: Dirk Hohndel <dirk@hohndel.org>
Bisected-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Nick Dyer <nick.dyer@itdev.co.uk>
Cc: Benson Leung <bleung@chromium.org>
Cc: Yufeng Shen <miletus@chromium.org>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: stable@vger.kernel.org  # v3.16+
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Pull arch/nios2 fixes from Ley Foon Tan:

 - fix compilation error when enable CONFIG_PREEMPT

 - initialize cpuinfo.mmu variable supplied by the device tree

* tag 'nios2-fixes-v3.19-rc3' of git://git.rocketboards.org/linux-socfpga-next:
  nios2: Use preempt_schedule_irq
  nios2: Initialize cpuinfo.mmu

Pull crypto fix from Herbert Xu:
 "Fix a use-after-free crash in the user-space crypto API"

* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: af_alg - fix backlog handling

Follow aa0d5326 ("ia64: Use preempt_schedule_irq") and use
preempt_schedule_irq instead of enabling/disabling interrupts and
messing around with PREEMPT_ACTIVE in the nios2 low-level preemption
code ourselves. Also get rid of the now needless re-check for
TIF_NEED_RESCHED, preempt_schedule_irq will already take care of
rescheduling.

This also fixes the following build error when building with
CONFIG_PREEMPT:

arch/nios2/kernel/built-in.o: In function `need_resched':
arch/nios2/kernel/entry.S:374: undefined reference to `PREEMPT_ACTIVE'

Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Acked-by: Ley Foon Tan <lftan@altera.com>

This patch initializes the mmu field of the cpuinfo structure to the
value supplied by the devicetree.
Signed-off-by: Walter Goossens <waltergoossens@home.nl>
Acked-by: Ley Foon Tan <lftan@altera.com>

Pull ARM SoC fixes from Arnd Bergmann:
 "A very small set of fixes for 3.19, as everyone was out.

  The clocksource patch was something I missed for the merge window
  after the change that broke arm64 was merged through arm-soc.  The
  other two patches are a fix for an undetected merge problem in mvebu
  and a defconfig change to make some exynos boards work with the normal
  multi_v7_defconfig"

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  Add USB_EHCI_EXYNOS to multi_v7_defconfig
  ARM: mvebu: Fix pinctrl configuration for Armada 370 DB
  clocksource: arch_timer: Only use the virtual counter (CNTVCT) on arm64

Pull fbdev fixes from Tomi Valkeinen:

 - Fix regression with Nokia N900 display

 - Fix crash on fbdev using freed __initdata logos

 - Fix fb_deferred_io_fsync() return value.

* tag 'fbdev-fixes-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux:
  OMAPDSS: SDI: fix output port_num
  video/fbdev: fix defio's fsync
  video/logo: prevent use of logos after they have been freed
  OMAPDSS: pll: NULL dereference in error handling
  OMAPDSS: HDMI: remove double initializer entries

Pull input layer fixes from Dmitry Torokhov:
 "Fixes for v7 protocol for ALPS devices and few other driver fixes.

  Also users can request input events to be stamped with boot time
  timestamps, in addition to real and monotonic timestamps"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: hil_kbd - fix incorrect use of init_completion
  Input: alps - v7: document the v7 touchpad packet protocol
  Input: alps - v7: fix finger counting for > 2 fingers on clickpads
  Input: alps - v7: sometimes a single touch is reported in mt[1]
  Input: alps - v7: ignore new packets
  Input: evdev - add CLOCK_BOOTTIME support
  Input: psmouse - expose drift duration for IBM trackpoints
  Input: stmpe - bias keypad columns properly
  Input: stmpe - enforce device tree only mode
  mfd: stmpe: add pull up/down register offsets for STMPE
  Input: optimize events_per_packet count calculation
  Input: edt-ft5x06 - fixed a macro coding style issue
  Input: gpio_keys - replace timer and workqueue with delayed workqueue
  Input: gpio_keys - allow separating gpio and irq in device tree

This reverts commit 24a0aa21.

It's causing severe userspace breakage.  Namely, all the utilities from
wireless-utils which are relying on CONFIG_WEXT (which means tools like
'iwconfig', 'iwlist', etc) are not working anymore.  There is a 'iw'
utility in newer wireless-tools, which is supposed to be a replacement
for all the "deprecated" binaries, but it's far away from being
massively adopted.

Please see [1] for example of the userspace breakage this is causing.

In addition to that, Larry Finger reports [2] that this patch is also
causing ipw2200 driver being impossible to build.

To me this clearly shows that CONFIG_WEXT is far, far away from being
"deprecated enough" to be removed.

[1] http://thread.gmane.org/gmane.linux.kernel/1857010
[2] http://thread.gmane.org/gmane.linux.network/343688Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Pull networking fixes from David Miller:

 1) Fix double SKB free in bluetooth 6lowpan layer, from Jukka Rissanen.

 2) Fix receive checksum handling in enic driver, from Govindarajulu
    Varadarajan.

 3) Fix NAPI poll list corruption in virtio_net and caif_virtio, from
    Herbert Xu.  Also, add code to detect drivers that have this mistake
    in the future.

 4) Fix doorbell endianness handling in mlx4 driver, from Amir Vadai.

 5) Don't clobber IP6CB() before xfrm6_policy_check() is called in TCP
    input path,f rom Nicolas Dichtel.

 6) Fix MPLS action validation in openvswitch, from Pravin B Shelar.

 7) Fix double SKB free in vxlan driver, also from Pravin.

 8) When we scrub a packet, which happens when we are switching the
    context of the packet (namespace, etc.), we should reset the
    secmark.  From Thomas Graf.

 9) ->ndo_gso_check() needs to do more than return true/false, it also
    has to allow the driver to clear netdev feature bits in order for
    the caller to be able to proceed properly.  From Jesse Gross.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (62 commits)
  genetlink: A genl_bind() to an out-of-range multicast group should not WARN().
  netlink/genetlink: pass network namespace to bind/unbind
  ne2k-pci: Add pci_disable_device in error handling
  bonding: change error message to debug message in __bond_release_one()
  genetlink: pass multicast bind/unbind to families
  netlink: call unbind when releasing socket
  netlink: update listeners directly when removing socket
  genetlink: pass only network namespace to genl_has_listeners()
  netlink: rename netlink_unbind() to netlink_undo_bind()
  net: Generalize ndo_gso_check to ndo_features_check
  net: incorrect use of init_completion fixup
  neigh: remove next ptr from struct neigh_table
  net: xilinx: Remove unnecessary temac_property in the driver
  net: phy: micrel: use generic config_init for KSZ8021/KSZ8031
  net/core: Handle csum for CHECKSUM_COMPLETE VXLAN forwarding
  openvswitch: fix odd_ptr_err.cocci warnings
  Bluetooth: Fix accepting connections when not using mgmt
  Bluetooth: Fix controller configuration with HCI_QUIRK_INVALID_BDADDR
  brcmfmac: Do not crash if platform data is not populated
  ipw2200: select CFG80211_WEXT
  ...

Merge tag 'linux-kselftest-3.19-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull kselftest fix from Shuah Khan:
 "Fix exec test compile warnings"

* tag 'linux-kselftest-3.19-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  selftests/exec: Use %zu to format size_t

Commit ac61d195 (scsi: set correct completion code in
scsi_send_eh_cmnd()) introduced a bug.  It changed the stored return
value from a queuecommand call, but it didn't take into account that
the return value was used again later on.  This patch fixes the bug by
changing the later usage.

There is a big comment in the middle of scsi_send_eh_cmnd() which
does a good job of explaining how the routine works.  But it mentions
a "rtn = FAILURE" value that doesn't exist in the code.  This patch
adjusts the code to match the comment (I assume the comment is right
and the code is wrong).

This fixes Bugzilla #88341.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-by: Андрей Аладьев <aladjev.andrew@gmail.com>
Tested-by: Андрей Аладьев <aladjev.andrew@gmail.com>
Fixes: ac61d195Acked-by: Hannes Reinecke <hare@suse.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

Fix a copy and paste error in the kernel doc description for the params_*()
functions.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

Merge tag 'asoc-fix-v3.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Fixes for v3.19

A few fixes for v3.19, a few driver specifics and one core fix which
fixes a boot crash on OMAP if deferred probing kicks in due to
attempting to modify static data.

Currently we enable Exynos devices in the multi v7 defconfig, however, when
testing on my ODROID-U3, I noticed that USB was not working.  Enabling this
option causes USB to work, which enables networking support as well since the
ODROID-U3 has networking on the USB bus.

[arnd] Support for odroid-u3 was added in 3.10, so it would be nice to
backport this fix at least that far.
Signed-off-by: Steev Klimaszewski <steev@gentoo.org>
Cc: stable@vger.kernel.org # 3.10
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Pull "Fixes for 3.19" from Andrew Lunn:

Jason is taking a back seat this cycle and i'm doing all the patch
wrangling for mvebu.

* tag 'mvebu-fixes-3.19' of git://git.infradead.org/linux-mvebu:
  ARM: mvebu: Fix pinctrl configuration for Armada 370 DB

Also update to Linux 3.19-rc1, which this was based on.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Unfortunately, while commit 4a928436 ("audit: correctly record file
names with different path name types") fixed a problem where we were
not recording filenames, it created a new problem by attempting to use
these file names after they had been freed.  This patch resolves the
issue by creating a copy of the filename which the audit subsystem
frees after it is done with the string.

At some point it would be nice to resolve this issue with refcounts,
or something similar, instead of having to allocate/copy strings, but
that is almost surely beyond the scope of a -rcX patch so we'll defer
that for later.  On the plus side, only audit users should be impacted
by the string copying.
Reported-by: Toralf Foerster <toralf.foerster@gmx.de>
Signed-off-by: Paul Moore <pmoore@redhat.com>

When I/O is aborted by mid-layer, fnic FW will complete the I/O before
completing the abort task. In some cases abort request is completed before
the I/O, which could lead to inconsistent driver and firmware states.
In this case firmware reset would clear the inconsistent state.
Signed-off-by: Anil Chintalapati <achintal@cisco.com>
Signed-off-by: Sesidhar Baddela <sebaddel@cisco.com>
Signed-off-by: Hiral Shah <hishah@cisco.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

7985090a changed the discard heuristics to give preference to the
WRITE SAME commands that (unlike UNMAP) guarantee deterministic results.

Ming Lei discovered that QEMU SCSI's WRITE SAME implementation
internally relied on limits that were only communicated for the UNMAP
case. And therefore discard commands backed by WRITE SAME would fail.

Tweak the heuristics so we still pick UNMAP in the LBPRZ=0 case and only
prefer the WRITE SAME variants if the device has the LBPRZ flag set.
Reported-by: Ming Lei <ming.lei@canonical.com>
Tested-by: Ming Lei <ming.lei@canonical.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

After the commit ef691ff4 (OMAPDSS: DT: Get source endpoint by
matching reg-id) we look for the SDI output using the port number.
However, the SDI driver doesn't set the port number, which causes the
SDI display to not initialize.

Fix this by setting the SDI port number to 1. We use a hardcoded value,
as SDI was used only on OMAP3 and it's always port number 1 there.
Reported-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Reported-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

fb_deferred_io_fsync() returns the value of schedule_delayed_work() as
an error code, but schedule_delayed_work() does not return an error. It
returns true/false depending on whether the work was already queued.

Fix this by ignoring the return value of schedule_delayed_work().
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: stable@vger.kernel.org

Pull CIFS fixes from Steve French:
 "A set of three minor cifs fixes"

* 'for-linus' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: make new inode cache when file type is different
  Fix signed/unsigned pointer warning
  Convert MessageID in smb2_hdr to LE

Pull UDF & isofs fixes from Jan Kara:
 "A couple of UDF fixes of handling of corrupted media and one iso9660
  fix of the same"

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
  udf: Reduce repeated dereferences
  udf: Check component length before reading it
  udf: Check path length when reading symlink
  udf: Verify symlink size before loading it
  udf: Verify i_size when loading inode
  isofs: Fix unchecked printing of ER records

Pull power management and ACPI material from Rafael J Wysocki:
 "These are fixes (operating performance points library, cpufreq-dt
  driver, cpufreq core, ACPI backlight, cpupower tool), cleanups
  (cpuidle), new processor IDs for the RAPL (Running Average Power
  Limit) power capping driver, and a modification of the generic power
  domains framework allowing modular drivers to call one of its helper
  functions.

  Specifics:

   - Fix for a potential NULL pointer dereference in the cpufreq core
     due to an initialization race condition (Ethan Zhao).

   - Fixes for abuse of the OPP (Operating Performance Points) API
     related to RCU and other minor issues in the OPP library and the
     cpufreq-dt driver (Dmitry Torokhov).

   - cpuidle governors cleanup making them measure idle duration in a
     better way without using the CPUIDLE_FLAG_TIME_INVALID flag which
     allows that flag to be dropped from the ACPI cpuidle driver and
     from the core too (Len Brown).

   - New ACPI backlight blacklist entries for Samsung machines without a
     working native backlight interface that need to use the ACPI
     backlight instead (Aaron Lu).

   - New CPU IDs of future Intel Xeon CPUs for the Intel RAPL power
     capping driver (Jacob Pan).

   - Generic power domains framework modification to export the
     of_genpd_get_from_provider() function to modular drivers that will
     allow future driver modifications to be based on the mainline (Amit
     Daniel Kachhap).

   - Two fixes for the cpupower tool (Michal Privoznik, Prarit
     Bhargava)"

* tag 'pm+acpi-3.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI / video: Add some Samsung models to disable_native_backlight list
  tools / cpupower: Fix no idle state information return value
  tools / cpupower: Correctly detect if running as root
  cpufreq: fix a NULL pointer dereference in __cpufreq_governor()
  cpufreq-dt: defer probing if OPP table is not ready
  PM / OPP: take RCU lock in dev_pm_opp_get_opp_count
  PM / OPP: fix warning in of_free_opp_table()
  PM / OPP: add some lockdep annotations
  powercap / RAPL: add IDs for future Xeon CPUs
  PM / Domains: Export of_genpd_get_from_provider function
  cpuidle / ACPI: remove unused CPUIDLE_FLAG_TIME_INVALID
  cpuidle: ladder: Better idle duration measurement without using CPUIDLE_FLAG_TIME_INVALID
  cpuidle: menu: Better idle duration measurement without using CPUIDLE_FLAG_TIME_INVALID

Users can request to bind to arbitrary multicast groups, so warning
when the requested group number is out of range is not appropriate.

And with the warning removed, and the 'err' variable properly given
an initial value, we can remove 'found' altogether.
Reported-by: Sedat Dilek <sedat.dilek@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Pull spi fixes from Mark Brown:
 "A few driver specific fixes here, the DMA burst size increase in the
  spfi driver is a fix to make the hardware happier in some situations"

* tag 'spi-v3.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
  spi: img-spfi: Increase DMA burst size
  spi: img-spfi: Enable controller before starting TX DMA
  spi: sh-msiof: Add runtime PM lock in initializing

Pull one regulator fix from Mark Brown:
 "One fix here, a fix for the voltage mapping on one of the s2mps11
  regulators which broke systems using it including apparently the
  Gear 2 smartwatches"

* tag 'regulator-v3.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
  regulator: s2mps11: Fix dw_mmc failure on Gear 2

Pull one MMC fix from Ulf Hansson:
 "MMC core:

   - Fix selection of buswidth for mmc hosts supporting 1-bit only"

* tag 'mmc-v3.19-2' of git://git.linaro.org/people/ulf.hansson/mmc:
  mmc: core: stop trying to switch width when only one bit is supported

Pull thermal management updates from Zhang Rui:
 "First of all, the most important change is the thermal cpu cooling
  fixes.  The major fix here is to have proper sequencing between
  cpufreq layer and thermal cpu cooling registration.  A take away of
  this fix is an improvement in the thermal drivers code.  Thermal
  drivers that require cpu cooling do not need to check for cpufreq
  layer.  The requirement now is to propagate the error code, if any,
  while registering cpu cooling device.  Thanks to Viresh for
  implementing the required CPUfreq changes.

  Second, a new driver is introduced for int340x processor thermal
  device.  Given that int340x thermal is disabled by default, and this
  processor thermal device is only available on limited platforms, plus
  the driver does nothing but exposes some thermal limitation
  information for user space to use, thus I think it is safe to include
  it in this pull request after missing 3.19-rc2.

  Specifics:

   - Thermal cpu cooling fixes and cleanups.

   - introduce INT340X processor thermal reporting device driver.

   - several small fixes and cleanups for int340x thermal drivers"

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux: (43 commits)
  Thermal/int340x/int3403: Free acpi notification handler
  Thermal/int340x/processor_thermal: Fix memory leak
  Thermal/int340x/int3403: Fix memory leak
  thermal: int340x: Introduce processor reporting device
  thermal: int340x_thermal: drop owner assignment from platform_drivers
  thermal: drop owner assignment from platform_drivers
  thermal: cpu_cooling: document node in struct cpufreq_cooling_device
  thermal/powerclamp: add ids for future xeon cpus
  Thermal/int340x: Handle properly the case when _trt or _art acpi entry is missing
  thermal: cpu_cooling: return ERR_PTR() for !CPU_THERMAL or !THERMAL_OF
  thermal: cpu_cooling: small memory leak on error
  thermal: ti-soc-thermal: Do not print error message in the EPROBE_DEFER case
  thermal: db8500: Do not print error message in the EPROBE_DEFER case
  thermal: imx: Do not print error message in the EPROBE_DEFER case
  thermal: Fix cdev registration with THERMAL_NO_LIMIT on 64bit
  drivers: thermal: Remove ARCH_HAS_BANDGAP dependency for samsung
  thermal:core:fix: Check return code of the ->get_max_state() callback
  thermal: cpu_cooling: update copyright tags
  thermal: cpu_cooling: Use cpufreq_dev->freq_table for finding level/freq
  thermal: cpu_cooling: Store frequencies in descending order
  ...

Commit 2457aec6 ("mm: non-atomically mark page accessed during page
cache allocation where possible") has added a separate parameter for
specifying gfp mask for radix tree allocations.

Not only this is less than optimal from the API point of view because it
is error prone, it is also buggy currently because
grab_cache_page_write_begin is using GFP_KERNEL for radix tree and if
fgp_flags doesn't contain FGP_NOFS (mostly controlled by fs by
AOP_FLAG_NOFS flag) but the mapping_gfp_mask has __GFP_FS cleared then
the radix tree allocation wouldn't obey the restriction and might
recurse into filesystem and cause deadlocks.  This is the case for most
filesystems unfortunately because only ext4 and gfs2 are using
AOP_FLAG_NOFS.

Let's simply remove radix_gfp_mask parameter because the allocation
context is same for both page cache and for the radix tree.  Just make
sure that the radix tree gets only the sane subset of the mask (e.g.  do
not pass __GFP_WRITE).

Long term it is more preferable to convert remaining users of
AOP_FLAG_NOFS to use mapping_gfp_mask instead and simplify this
interface even further.
Reported-by: Dave Chinner <david@fromorbit.com>
Signed-off-by: Michal Hocko <mhocko@suse.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>