Commit Graph

494551 Commits

Author SHA1 Message Date
Lee Jones
52a98dcd37 - Avoid platform ID collision in da9052
- Skip caching volatile registers in tps65218
  - Use correct address base in tps65218
  - Repair deadlock on suspend in rtsx_usb
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Merge tag 'mfd-fixes-3.19' into HEAD

 - Avoid platform ID collision in da9052
 - Skip caching volatile registers in tps65218
 - Use correct address base in tps65218
 - Repair deadlock on suspend in rtsx_usb
2015-01-22 15:55:29 +00:00
Roger Tseng
b166010f6a mfd: rtsx_usb: Fix runtime PM deadlock
sd_set_power_mode() in derived module drivers/mmc/host/rtsx_usb_sdmmc.c
acquires dev_mutex and then calls pm_runtime_get_sync() to make sure the
device is awake while initializing a newly inserted card. Once it is
called during suspending state and explicitly before rtsx_usb_suspend()
acquires the same dev_mutex, both routine deadlock and further hang the
driver because pm_runtime_get_sync() waits the pending PM operations.

Fix this by using an empty suspend method. mmc_core always turns the
LED off after a request is done and thus it is ok to remove the only
rtsx_usb_turn_off_led() here.

Cc: <stable@vger.kernel.org> # v3.16+
Fixes: 730876be25 ("mfd: Add realtek USB card reader driver")
Signed-off-by: Roger Tseng <rogerable@realtek.com>
[Lee: Removed newly unused variable]
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2015-01-20 12:52:55 +00:00
Felipe Balbi
f29ae369a4 mfd: tps65218: Make INT1 our status_base register
If we don't tell regmap-irq that our first status
register is at offset 1, it will try to read offset
zero, which is the chipid register.

Fixes: 44b4dc6 mfd: tps65218: Add driver for the TPS65218 PMIC
Cc: <stable@vger.kernel.org> # v3.15+
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2015-01-20 12:52:53 +00:00
Felipe Balbi
773328da24 mfd: tps65218: Make INT[12] and STATUS registers volatile
STATUS register can be modified by the HW, so we
should bypass cache because of that.

In the case of INT[12] registers, they are the ones
that actually clear the IRQ source at the time they
are read. If we rely on the cache for them, we will
never be able to clear the interrupt, which will cause
our IRQ line to be disabled due to IRQ throttling.

Fixes: 44b4dc6 mfd: tps65218: Add driver for the TPS65218 PMIC
Cc: <stable@vger.kernel.org> # v3.15+
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2015-01-20 12:52:50 +00:00
Fabio Estevam
b3f6c73db7 mfd: da9052-core: Fix platform-device id collision
Allow multiple DA9052 regulators be registered by registering with
PLATFORM_DEVID_AUTO instead of PLATFORM_DEVID_NONE.

The subdevices are currently registered with PLATFORM_DEVID_NONE, which
will cause a name collision on the platform bus when multiple regulators
are registered:

[    0.128855] da9052-regulator da9052-regulator: invalid regulator ID specified
[    0.128973] da9052-regulator: probe of da9052-regulator failed with error -22
[    0.129148] ------------[ cut here ]------------
[    0.129200] WARNING: CPU: 0 PID: 1 at fs/sysfs/dir.c:31 sysfs_warn_dup+0x5c/0x7c()
[    0.129233] sysfs: cannot create duplicate filename '/devices/platform/soc/60000000.aips/63fc8000.i2c/i2c-0/0-0048/da9052-regulator
...
[    0.132891] ------------[ cut here ]------------
[    0.132924] WARNING: CPU: 0 PID: 1 at lib/kobject.c:240 kobject_add_internal+0x24c/0x2cc()
[    0.132957] kobject_add_internal failed for da9052-regulator with -EEXIST, don't try to register things with the same name in the same directory.
...
[    0.137000] da9052 0-0048: mfd_add_devices failed: -17
[    0.138486] da9052: probe of 0-0048 failed with error -17

Based on the fix done by Johan Hovold at commit b668422872 ("mfd:
viperboard: Fix platform-device id collision").

Tested on a imx53-qsb board, where multiple DA9053 regulators can be
successfully probed.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2015-01-20 12:52:48 +00:00
Linus Torvalds
b7392d2247 Linux 3.19-rc2 2014-12-28 16:49:37 -08:00
Linus Torvalds
2ea1e35ab1 The important fixes are for two bugs introduced by the merge window.
On top of this, add a couple of WARN_ONs and stop spamming dmesg on
 pretty much every boot of a virtual machine.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull KVM fixes from Paolo Bonzini:
 "The important fixes are for two bugs introduced by the merge window.

  On top of this, add a couple of WARN_ONs and stop spamming dmesg on
  pretty much every boot of a virtual machine"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  kvm: warn on more invariant breakage
  kvm: fix sorting of memslots with base_gfn == 0
  kvm: x86: drop severity of "generation wraparound" message
  kvm: x86: vmx: reorder some msr writing
2014-12-28 13:08:08 -08:00
Linus Torvalds
9a6b871d98 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs fix from Al Viro:
 "An embarrassing bug in lustre patches from this cycle ;-/"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  [regression] braino in "lustre: use is_root_inode()"
2014-12-28 13:02:27 -08:00
Paolo Bonzini
dbaff30940 kvm: warn on more invariant breakage
Modifying a non-existent slot is not allowed.  Also check that the
first loop doesn't move a deleted slot beyond the used part of
the mslots array.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-12-28 10:01:25 +01:00
Paolo Bonzini
efbeec7098 kvm: fix sorting of memslots with base_gfn == 0
Before commit 0e60b0799f (kvm: change memslot sorting rule from size
to GFN, 2014-12-01), the memslots' sorting key was npages, meaning
that a valid memslot couldn't have its sorting key equal to zero.
On the other hand, a valid memslot can have base_gfn == 0, and invalid
memslots are identified by base_gfn == npages == 0.

Because of this, commit 0e60b0799f broke the invariant that invalid
memslots are at the end of the mslots array.  When a memslot with
base_gfn == 0 was created, any invalid memslot before it were left
in place.

This can be fixed by changing the insertion to use a ">=" comparison
instead of "<=", but some care is needed to avoid breaking the case
of deleting a memslot; see the comment in update_memslots.

Thanks to Tiejun Chen for posting an initial patch for this bug.

Reported-by: Jamie Heilman <jamie@audible.transient.net>
Reported-by: Andy Lutomirski <luto@amacapital.net>
Tested-by: Jamie Heilman <jamie@audible.transient.net>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-12-28 10:01:17 +01:00
Linus Torvalds
29169f8230 sound fixes for 3.19-rc2
Just a couple of fixes for the new Intel Skylake HD-audio support.
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Merge tag 'sound-3.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "Just a couple of fixes for the new Intel Skylake HD-audio support"

* tag 'sound-3.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda_intel: apply the Seperate stream_tag for Skylake
  ALSA: hda_controller: Separate stream_tag for input and output streams.
2014-12-27 13:12:00 -08:00
Paolo Bonzini
a629df7ead kvm: x86: drop severity of "generation wraparound" message
Since most virtual machines raise this message once, it is a bit annoying.
Make it KERN_DEBUG severity.

Cc: stable@vger.kernel.org
Fixes: 7a2e8aaf0f
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-12-27 21:52:28 +01:00
Tiejun Chen
baa035227b kvm: x86: vmx: reorder some msr writing
The commit 34a1cd60d1, "x86: vmx: move some vmx setting from
vmx_init() to hardware_setup()", tried to refactor some codes
specific to vmx hardware setting into hardware_setup(), but some
msr writing should depend on our previous setting condition like
enable_apicv, enable_ept and so on.

Reported-by: Jamie Heilman <jamie@audible.transient.net>
Tested-by: Jamie Heilman <jamie@audible.transient.net>
Signed-off-by: Tiejun Chen <tiejun.chen@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-12-27 21:52:10 +01:00
Al Viro
5242d42297 [regression] braino in "lustre: use is_root_inode()"
In one of the places (ll_md_blocking_ast()) we had open-coded
!is_root_inode(inode) and replaced it with is_root_inode(inode).
See the last chunk of f76c23:
-                   inode != inode->i_sb->s_root->d_inode)
+                   is_root_inode(inode))
should've been
+                   !is_root_inode(inode))
obviously...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-12-26 22:43:19 -05:00
Linus Torvalds
58628a7831 Merge branch 'parisc-3.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc build fix from Helge Deller:
 "This unbreaks the kernel compilation on parisc with gcc-4.9"

* 'parisc-3.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: fix out-of-register compiler error in ldcw inline assembler function
2014-12-26 13:41:05 -08:00
John David Anglin
45db07382a parisc: fix out-of-register compiler error in ldcw inline assembler function
The __ldcw macro has a problem when its argument needs to be reloaded from
memory. The output memory operand and the input register operand both need to
be reloaded using a register in class R1_REGS when generating 64-bit code.
This fails because there's only a single register in the class. Instead, use a
memory clobber. This also makes the __ldcw macro a compiler memory barrier.

Signed-off-by: John David Anglin <dave.anglin@bell.net>
Cc: <stable@vger.kernel.org>        [3.13+]
Signed-off-by: Helge Deller <deller@gmx.de>
2014-12-26 17:47:01 +01:00
Libin Yang
d6795827bd ALSA: hda_intel: apply the Seperate stream_tag for Skylake
The total stream number of Skylake's input and output stream
exceeds 15, which will cause some streams do not work because
of the overflow on SDxCTL.STRM field if using the legacy
stream tag allocation method.

This patch uses the new stream tag allocation method by add
the flag AZX_DCAPS_SEPARATE_STREAM_TAG for Skylake platform.

Signed-off-by: Libin Yang <libin.yang@intel.com>
Reviewed-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2014-12-26 12:21:31 +01:00
Rafal Redzimski
93e3423e6b ALSA: hda_controller: Separate stream_tag for input and output streams.
Implemented separate stream_tag assignment for input and output streams.
According to hda specification stream tag must be unique throughout the
input streams group, however an output stream might use a stream tag
which is already in use by an input stream. This change is necessary
to support HW which provides a total of more than 15 stream DMA engines
which with legacy implementation causes an overflow on SDxCTL.STRM
field (and the whole SDxCTL register) and as a result usage of
Reserved value 0 in the SDxCTL.STRM field which confuses HDA controller.

Signed-off-by: Rafal Redzimski <rafal.f.redzimski@intel.com>
Signed-off-by: Jayachandran B <jayachandran.b@intel.com>
Signed-off-by: Libin Yang <libin.yang@intel.com>
Reviewed-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2014-12-26 12:21:21 +01:00
Linus Torvalds
08b022a965 Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
 "Xmas fixes pull:

  core:
      one atomic fix, revert the WARN_ON dumb buffers patch.

  agp:
      fixup Dave J.

  nouveau:
      fix 3.18 regression for old userspace

  tegra fixes:
      vblank and iommu fixes

  amdkfd:
      fix bugs shown by testing with userspace, init apertures once

  msm:
      hdmi fixes and cleanup

  i915:
      misc fixes

  There is also a link ordering fix that I've asked to be cc'ed to you,
  putting iommu before gpu, it fixes an issue with amdkfd when things
  are all in the kernel, but I didn't like sending it via my tree
  without discussion.

  I'll probably be a bit on/off for a few weeks with pulls now, due to
  holidays and LCA, so don't be surprised if stuff gets a bit backed up,
  and things end up a bit large due to lag"

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (28 commits)
  Revert "drm/gem: Warn on illegal use of the dumb buffer interface v2"
  agp: Fix up email address & attributions in AGP MODULE_AUTHOR tags
  nouveau: bring back legacy mmap handler
  drm/msm/hdmi: rework HDMI IRQ handler
  drm/msm/hdmi: enable regulators before clocks to avoid warnings
  drm/msm/mdp5: update irqs on crtc<->encoder link change
  drm/msm: block incoming update on pending updates
  drm/atomic: fix potential null ptr on plane enable
  drm/msm: Deletion of unnecessary checks before the function call "release_firmware"
  drm/msm: Deletion of unnecessary checks before two function calls
  drm/tegra: dc: Select root window for event dispatch
  drm/tegra: gem: Use the proper size for GEM objects
  drm/tegra: gem: Flush buffer objects upon allocation
  drm/tegra: dc: Fix a potential race on page-flip completion
  drm/tegra: dc: Consistently use the same pipe
  drm/irq: Add drm_crtc_vblank_count()
  drm/irq: Add drm_crtc_handle_vblank()
  drm/irq: Add drm_crtc_send_vblank_event()
  drm/i915: Disable PSMI sleep messages on all rings around context switches
  drm/i915: Force the CS stall for invalidate flushes
  ...
2014-12-25 16:04:15 -08:00
Linus Torvalds
ebda37c90e Fix two bugs:
One that lockdep turned up, I didn't go far enough with cleanup
 of attributes for IPMI.  This has been there a long time; my
 previous fix of this didn't fix all the attributes.
 
 One fix for some arches that need an explicit linux/ctype.h for
 isspace().
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Merge tag 'for-linus-2' of git://git.code.sf.net/p/openipmi/linux-ipmi

Pull ipmi driver bugfixes from Corey Minyard:
 "Fix two bugs:

  One that lockdep turned up, I didn't go far enough with cleanup of
  attributes for IPMI.  This has been there a long time; my previous fix
  of this didn't fix all the attributes.

  One fix for some arches that need an explicit linux/ctype.h for
  isspace()"

* tag 'for-linus-2' of git://git.code.sf.net/p/openipmi/linux-ipmi:
  ipmi: Fix compile issue with isspace()
  ipmi: Finish cleanup of BMC attributes
2014-12-25 15:56:34 -08:00
Dave Airlie
da6b51d007 Revert "drm/gem: Warn on illegal use of the dumb buffer interface v2"
This reverts commit 355a701838.

This had some bad side effects under normal operation, and should
have been dropped earlier.

Signed-off-by: Dave Airlie <airlied@redhat.com>
2014-12-24 13:13:22 +10:00
Dave Airlie
0d83b72acd Merge tag 'amdkfd-fixes-2014-12-23' of git://people.freedesktop.org/~gabbayo/linux into drm-fixes
- Display MEC fw version in topology. Without this, the HSA userspace
  stack is broken.

- Init apertures information only once per process

* tag 'amdkfd-fixes-2014-12-23' of git://people.freedesktop.org/~gabbayo/linux:
  amdkfd: init aperture once per process
  amdkfd: Display MEC fw version in topology node
  drm/radeon: Add implementation of get_fw_version
  drm/amd: Add get_fw_version to kfd-->kgd interface
2014-12-24 12:59:08 +10:00
Linus Torvalds
66b3f4f0a0 Merge branch 'upstream' of git://git.infradead.org/users/pcmoore/audit
Pull audit fixes from Paul Moore:
 "Four patches to fix various problems with the audit subsystem, all are
  fairly small and straightforward.

  One patch fixes a problem where we weren't using the correct gfp
  allocation flags (GFP_KERNEL regardless of context, oops), one patch
  fixes a problem with old userspace tools (this was broken for a
  while), one patch fixes a problem where we weren't recording pathnames
  correctly, and one fixes a problem with PID based filters.

  In general I don't think there is anything controversial with this
  patchset, and it fixes some rather unfortunate bugs; the allocation
  flag one can be particularly scary looking for users"

* 'upstream' of git://git.infradead.org/users/pcmoore/audit:
  audit: restore AUDIT_LOGINUID unset ABI
  audit: correctly record file names with different path name types
  audit: use supplied gfp_mask from audit_buffer in kauditd_send_multicast_skb
  audit: don't attempt to lookup PIDs when changing PID filtering audit rules
2014-12-23 18:13:16 -08:00
Richard Guy Briggs
041d7b98ff audit: restore AUDIT_LOGINUID unset ABI
A regression was caused by commit 780a7654ce:
	 audit: Make testing for a valid loginuid explicit.
(which in turn attempted to fix a regression caused by e1760bd)

When audit_krule_to_data() fills in the rules to get a listing, there was a
missing clause to convert back from AUDIT_LOGINUID_SET to AUDIT_LOGINUID.

This broke userspace by not returning the same information that was sent and
expected.

The rule:
	auditctl -a exit,never -F auid=-1
gives:
	auditctl -l
		LIST_RULES: exit,never f24=0 syscall=all
when it should give:
		LIST_RULES: exit,never auid=-1 (0xffffffff) syscall=all

Tag it so that it is reported the same way it was set.  Create a new
private flags audit_krule field (pflags) to store it that won't interact with
the public one from the API.

Cc: stable@vger.kernel.org # v3.10-rc1+
Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
Signed-off-by: Paul Moore <pmoore@redhat.com>
2014-12-23 16:40:18 -05:00
Linus Torvalds
53262d12d1 arm64 fixes:
- __cpu_suspend mm switching fix after warm boot
 - arch_setup_dma_ops implementation
 - pgd_page compilation error fix
 - defconfig updates
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 fixes from Catalin Marinas:
 - __cpu_suspend mm switching fix after warm boot
 - arch_setup_dma_ops implementation
 - pgd_page compilation error fix
 - defconfig updates

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: mm: Add pgd_page to support RCU fast_gup
  arm64: defconfig: defconfig update for 3.19
  arm64: kernel: fix __cpu_suspend mm switch on warm-boot
  arm64: Replace set_arch_dma_coherent_ops with arch_setup_dma_ops
2014-12-23 11:03:28 -08:00
Jungseok Lee
5d96e0cba2 arm64: mm: Add pgd_page to support RCU fast_gup
This patch adds pgd_page definition in order to keep supporting
HAVE_GENERIC_RCU_GUP configuration. In addition, it changes pud_page
expression to align with pmd_page for readability.

An introduction of pgd_page resolves the following build breakage
under 4KB + 4Level memory management combo.

mm/gup.c: In function 'gup_huge_pgd':
mm/gup.c:889:2: error: implicit declaration of function 'pgd_page' [-Werror=implicit-function-declaration]
  head = pgd_page(orig);
  ^
mm/gup.c:889:7: warning: assignment makes pointer from integer without a cast
  head = pgd_page(orig);

Cc: Will Deacon <will.deacon@arm.com>
Cc: Steve Capper <steve.capper@linaro.org>
Signed-off-by: Jungseok Lee <jungseoklee85@gmail.com>
[catalin.marinas@arm.com: remove duplicate pmd_page definition]
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2014-12-23 16:39:17 +00:00
Will Deacon
f7bf130ecd arm64: defconfig: defconfig update for 3.19
The usual defconfig tweaks, this time:

  - FHANDLE and AUTOFS4_FS to keep systemd happy
  - PID_NS, QUOTA and KEYS to keep LTP happy
  - Disable DEBUG_PREEMPT, as this *really* hurts performance

Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2014-12-23 16:39:17 +00:00
Lorenzo Pieralisi
f43c27188a arm64: kernel: fix __cpu_suspend mm switch on warm-boot
On arm64 the TTBR0_EL1 register is set to either the reserved TTBR0
page tables on boot or to the active_mm mappings belonging to user space
processes, it must never be set to swapper_pg_dir page tables mappings.

When a CPU is booted its active_mm is set to init_mm even though its
TTBR0_EL1 points at the reserved TTBR0 page mappings. This implies
that when __cpu_suspend is triggered the active_mm can point at
init_mm even if the current TTBR0_EL1 register contains the reserved
TTBR0_EL1 mappings.

Therefore, the mm save and restore executed in __cpu_suspend might
turn out to be erroneous in that, if the current->active_mm corresponds
to init_mm, on resume from low power it ends up restoring in the
TTBR0_EL1 the init_mm mappings that are global and can cause speculation
of TLB entries which end up being propagated to user space.

This patch fixes the issue by checking the active_mm pointer before
restoring the TTBR0 mappings. If the current active_mm == &init_mm,
the code sets the TTBR0_EL1 to the reserved TTBR0 mapping instead of
switching back to the active_mm, which is the expected behaviour
corresponding to the TTBR0_EL1 settings when __cpu_suspend was entered.

Fixes: 95322526ef ("arm64: kernel: cpu_{suspend/resume} implementation")
Cc: <stable@vger.kernel.org> # 3.14+: 18ab7db
Cc: <stable@vger.kernel.org> # 3.14+: 714f599
Cc: <stable@vger.kernel.org> # 3.14+: c3684fb
Cc: <stable@vger.kernel.org> # 3.14+
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2014-12-23 16:38:50 +00:00
Dave Jones
bd8136d397 agp: Fix up email address & attributions in AGP MODULE_AUTHOR tags
- Remove soon-to-be-dead @redhat address.
- Jeff Hartmann wrote the bulk of the original backend code, and should
  at least get a mention in the MODULE_AUTHOR for backend.o
- Various people at Intel have done a lot more work than myself on the
  intel-* drivers, so again, mention that.

Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2014-12-23 20:03:10 +10:00
Linus Torvalds
aa39477b56 3 stable fixes and 1 fix for a regression introduced during 3.19 merge:
- Fix inability to discard used space when the thin-pool target is in
   out-of-data-space mode and also transition the thin-pool back to write
   mode once free space is made available.
 
 - Fix DM core bio-based end_io bug that prevented proper post-processing
   of the error code returned from the block layer.
 
 - Fix crash in DM thin-pool due to thin device being added to the pool's
   active_thins list before properly initializing the thin device's
   refcount.
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Merge tag 'dm-3.19-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm

Pull device mapper fixes from Mike Snitzer:
 "Thre stable fixes and one fix for a regression introduced during 3.19
  merge:

   - Fix inability to discard used space when the thin-pool target is in
     out-of-data-space mode and also transition the thin-pool back to
     write mode once free space is made available.

   - Fix DM core bio-based end_io bug that prevented proper
     post-processing of the error code returned from the block layer.

   - Fix crash in DM thin-pool due to thin device being added to the
     pool's active_thins list before properly initializing the thin
     device's refcount"

* tag 'dm-3.19-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
  dm: fix missed error code if .end_io isn't implemented by target_type
  dm thin: fix crash by initializing thin device's refcount and completion earlier
  dm thin: fix missing out-of-data-space to write mode transition if blocks are released
  dm thin: fix inability to discard blocks when in out-of-data-space mode
2014-12-22 14:47:17 -08:00
Kirill A. Shutemov
48ec833b78 Revert "mm/memory.c: share the i_mmap_rwsem"
This reverts commit c8475d144a.

There are several[1][2] of bug reports which points to this commit as potential
cause[3].

Let's revert it until we figure out what's going on.

[1] https://lkml.org/lkml/2014/11/14/342
[2] https://lkml.org/lkml/2014/12/22/213
[3] https://lkml.org/lkml/2014/12/9/741

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reported-by: Sasha Levin <sasha.levin@oracle.com>
Acked-by: Davidlohr Bueso <dave@stgolabs.net>
Cc: Hugh Dickins <hughd@google.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Mel Gorman <mgorman@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-12-22 14:27:34 -08:00
Dave Airlie
fc556fb64e drm/tegra: Fixes for v3.19-rc1
This is a set of fixes for two regressions and one bug in the IOMMU
 mapping code. It turns out that all of these issues turn up primarily
 on Tegra30 hardware. The IOMMU mapping bug only manifests on buffers
 that aren't multiples of the page size. I happened to be testing HDMI
 with 1080p while writing the code and framebuffers for that happen to
 fit exactly within 2025 pages of 4 KiB each.
 
 One of the regressions is caused by the IOMMU code allocating pages from
 shmem which can have associated cache lines. If the pages aren't flushed
 then these cache lines may be flushed later on and cause framebuffer
 corruption. I'm not sure why I didn't see this before. Perhaps the board
 that I was using had enough RAM so that the pages shmem would hand out
 had a better chance of being unused. Or maybe I didn't look too closely.
 The fix for this is to fake up an SG table so that it can be passed to
 the DMA API. Ideally this would use drm_clflush_*(), but implementing
 that for ARM causes DRM to fail to build as a module since some of the
 low-level cache maintenance functions aren't exported. Hopefully we can
 get a suitable API exported on ARM for the next release.
 
 The second regression is caused by a mismatch between the hardware pipe
 number and the CRTC's DRM index. These were used inconsistently, which
 could cause one code location to call drm_vblank_get() with a different
 pipe than the corresponding drm_vblank_put(), thereby causing the
 reference count to become unbalanced. Alexandre also reported a possible
 race condition related to this, which this series also fixes.
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Merge tag 'drm/tegra/for-3.19-rc1-fixes' of git://people.freedesktop.org/~tagr/linux into drm-fixes

drm/tegra: Fixes for v3.19-rc1

This is a set of fixes for two regressions and one bug in the IOMMU
mapping code. It turns out that all of these issues turn up primarily
on Tegra30 hardware. The IOMMU mapping bug only manifests on buffers
that aren't multiples of the page size. I happened to be testing HDMI
with 1080p while writing the code and framebuffers for that happen to
fit exactly within 2025 pages of 4 KiB each.

One of the regressions is caused by the IOMMU code allocating pages from
shmem which can have associated cache lines. If the pages aren't flushed
then these cache lines may be flushed later on and cause framebuffer
corruption. I'm not sure why I didn't see this before. Perhaps the board
that I was using had enough RAM so that the pages shmem would hand out
had a better chance of being unused. Or maybe I didn't look too closely.
The fix for this is to fake up an SG table so that it can be passed to
the DMA API. Ideally this would use drm_clflush_*(), but implementing
that for ARM causes DRM to fail to build as a module since some of the
low-level cache maintenance functions aren't exported. Hopefully we can
get a suitable API exported on ARM for the next release.

The second regression is caused by a mismatch between the hardware pipe
number and the CRTC's DRM index. These were used inconsistently, which
could cause one code location to call drm_vblank_get() with a different
pipe than the corresponding drm_vblank_put(), thereby causing the
reference count to become unbalanced. Alexandre also reported a possible
race condition related to this, which this series also fixes.

* tag 'drm/tegra/for-3.19-rc1-fixes' of git://people.freedesktop.org/~tagr/linux:
  drm/tegra: dc: Select root window for event dispatch
  drm/tegra: gem: Use the proper size for GEM objects
  drm/tegra: gem: Flush buffer objects upon allocation
  drm/tegra: dc: Fix a potential race on page-flip completion
  drm/tegra: dc: Consistently use the same pipe
  drm/irq: Add drm_crtc_vblank_count()
  drm/irq: Add drm_crtc_handle_vblank()
  drm/irq: Add drm_crtc_send_vblank_event()
2014-12-23 08:24:26 +10:00
Dave Airlie
a548a838a1 Merge tag 'drm-intel-next-fixes-2014-12-17' of git://anongit.freedesktop.org/drm-intel into drm-fixes
misc i915 fixes.

* tag 'drm-intel-next-fixes-2014-12-17' of git://anongit.freedesktop.org/drm-intel:
  drm/i915: Disable PSMI sleep messages on all rings around context switches
  drm/i915: Force the CS stall for invalidate flushes
  drm/i915: Invalidate media caches on gen7
  drm/i915: sanitize RPS resetting during GPU reset
  drm/i915: move RPS PM_IER enabling to gen6_enable_rps_interrupts
  drm/i915: vlv: fix IRQ masking when uninstalling interrupts
2014-12-23 08:23:08 +10:00
Dave Airlie
2e33054e44 Merge tag 'topic/atomic-fixes-2014-12-17' of git://anongit.freedesktop.org/drm-intel into drm-fixes
Yeah a pull for one patch is a bit overkill but I started to assemble the
various patches for 3.20 in a branch for atomic props/ioctl and didn't
realize that this bugfix here at the beginnning of the branch should be in
3.19 (because msm is using the helpers arleady). So if you'd merge we'd
have it twice or or I need to shuffle branches again. Can do if you want.

* tag 'topic/atomic-fixes-2014-12-17' of git://anongit.freedesktop.org/drm-intel:
  drm/atomic: fix potential null ptr on plane enable
2014-12-23 08:22:22 +10:00
Dave Airlie
955f6be8ec Merge branch 'msm-fixes-3.19' of git://people.freedesktop.org/~robclark/linux into drm-fixes
A few msm fixes for 3.19:
 * hdmi regulators fix
 * hdmi fix for spurious HPD interrupts
 * fix for sync atomic update after async update (which could show
   up with a setcrtc following a pageflip)
 * couple little Coccinelle cleanups

* 'msm-fixes-3.19' of git://people.freedesktop.org/~robclark/linux:
  drm/msm/hdmi: rework HDMI IRQ handler
  drm/msm/hdmi: enable regulators before clocks to avoid warnings
  drm/msm/mdp5: update irqs on crtc<->encoder link change
  drm/msm: block incoming update on pending updates
  drm/msm: Deletion of unnecessary checks before the function call "release_firmware"
  drm/msm: Deletion of unnecessary checks before two function calls
2014-12-23 08:21:54 +10:00
Dave Airlie
2036eaa740 nouveau: bring back legacy mmap handler
nouveau userspace back at 1.0.1 used to call the X server
DRIOpenDRMMaster interface even for DRI2 (doh!), this attempts
to map the sarea and fails if it can't.

Since 884c6dabb0 from Daniel,
this fails, but only ancient drivers would see it.

Revert the nouveau bits of that fix.

Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: <stable@vger.kernel.org>  # 3.18
Signed-off-by: Dave Airlie <airlied@redhat.com>
2014-12-23 08:11:43 +10:00
Paul Moore
4a92843601 audit: correctly record file names with different path name types
There is a problem with the audit system when multiple audit records
are created for the same path, each with a different path name type.
The root cause of the problem is in __audit_inode() when an exact
match (both the path name and path name type) is not found for a
path name record; the existing code creates a new path name record,
but it never sets the path name in this record, leaving it NULL.
This patch corrects this problem by assigning the path name to these
newly created records.

There are many ways to reproduce this problem, but one of the
easiest is the following (assuming auditd is running):

  # mkdir /root/tmp/test
  # touch /root/tmp/test/567
  # auditctl -a always,exit -F dir=/root/tmp/test
  # touch /root/tmp/test/567

Afterwards, or while the commands above are running, check the audit
log and pay special attention to the PATH records.  A faulty kernel
will display something like the following for the file creation:

  type=SYSCALL msg=audit(1416957442.025:93): arch=c000003e syscall=2
    success=yes exit=3 ... comm="touch" exe="/usr/bin/touch"
  type=CWD msg=audit(1416957442.025:93):  cwd="/root/tmp"
  type=PATH msg=audit(1416957442.025:93): item=0 name="test/"
    inode=401409 ... nametype=PARENT
  type=PATH msg=audit(1416957442.025:93): item=1 name=(null)
    inode=393804 ... nametype=NORMAL
  type=PATH msg=audit(1416957442.025:93): item=2 name=(null)
    inode=393804 ... nametype=NORMAL

While a patched kernel will show the following:

  type=SYSCALL msg=audit(1416955786.566:89): arch=c000003e syscall=2
    success=yes exit=3 ... comm="touch" exe="/usr/bin/touch"
  type=CWD msg=audit(1416955786.566:89):  cwd="/root/tmp"
  type=PATH msg=audit(1416955786.566:89): item=0 name="test/"
    inode=401409 ... nametype=PARENT
  type=PATH msg=audit(1416955786.566:89): item=1 name="test/567"
    inode=393804 ... nametype=NORMAL

This issue was brought up by a number of people, but special credit
should go to hujianyang@huawei.com for reporting the problem along
with an explanation of the problem and a patch.  While the original
patch did have some problems (see the archive link below), it did
demonstrate the problem and helped kickstart the fix presented here.

  * https://lkml.org/lkml/2014/9/5/66

Reported-by: hujianyang <hujianyang@huawei.com>
Signed-off-by: Paul Moore <pmoore@redhat.com>
Acked-by: Richard Guy Briggs <rgb@redhat.com>
2014-12-22 12:27:39 -05:00
Catalin Marinas
31dde116cb arm64: Replace set_arch_dma_coherent_ops with arch_setup_dma_ops
Commit a3a60f81ee (dma-mapping: replace set_arch_dma_coherent_ops with
arch_setup_dma_ops) changes the of_dma_configure() arch dma_ops callback
to arch_setup_dma_ops but only the arch/arm code is updated. Subsequent
commit 97890ba928 (dma-mapping: detect and configure IOMMU in
of_dma_configure) changes the arch_setup_dma_ops() prototype further to
handle iommu. The patch makes the corresponding arm64 changes.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Reported-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Will Deacon <will.deacon@arm.com>
2014-12-22 09:26:32 +00:00
Corey Minyard
e3fe142704 ipmi: Fix compile issue with isspace()
Some arches don't get ctypes.h included from these includes, so add
it explicitly.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
2014-12-21 17:03:19 -06:00
Corey Minyard
9c633317a5 ipmi: Finish cleanup of BMC attributes
The previous cleanup of BMC attributes left a few holes, and if
you run with lockdep debugging with a BMC with the proper attributes,
you could get a warning.

This patch removes all the unused attributes from the BMC structure,
since they are all declared in the .data section now.  It makes
the attributes all static.  It fixes the referencing of the
attributes in a couple of cases that dynamically added the files
depending on BMC information.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
Cc: Huang Ying <ying.huang@intel.com>
Tested-by: Alexei Starovoitov <ast@plumgrid.com>
2014-12-21 17:00:59 -06:00
Linus Torvalds
97bf6af1f9 Linux 3.19-rc1 2014-12-20 17:08:50 -08:00
Linus Torvalds
60815cf2e0 kernel: Provide READ_ONCE and ASSIGN_ONCE
As discussed on LKML http://marc.info/?i=54611D86.4040306%40de.ibm.com
 ACCESS_ONCE might fail with specific compilers for non-scalar accesses.
 
 Here is a set of patches to tackle that problem.
 
 The first patch introduce READ_ONCE and ASSIGN_ONCE. If the data structure
 is larger than the machine word size memcpy is used and a warning is emitted.
 The next patches fix up several in-tree users of ACCESS_ONCE on non-scalar
 types.
 
 This merge does not yet contain a patch that forces ACCESS_ONCE to work only
 on scalar types. This is targetted for the next merge window as Linux next
 already contains new offenders regarding ACCESS_ONCE vs. non-scalar types.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/borntraeger/linux

Pull ACCESS_ONCE cleanup preparation from Christian Borntraeger:
 "kernel: Provide READ_ONCE and ASSIGN_ONCE

  As discussed on LKML http://marc.info/?i=54611D86.4040306%40de.ibm.com
  ACCESS_ONCE might fail with specific compilers for non-scalar
  accesses.

  Here is a set of patches to tackle that problem.

  The first patch introduce READ_ONCE and ASSIGN_ONCE.  If the data
  structure is larger than the machine word size memcpy is used and a
  warning is emitted.  The next patches fix up several in-tree users of
  ACCESS_ONCE on non-scalar types.

  This does not yet contain a patch that forces ACCESS_ONCE to work only
  on scalar types.  This is targetted for the next merge window as Linux
  next already contains new offenders regarding ACCESS_ONCE vs.
  non-scalar types"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/borntraeger/linux:
  s390/kvm: REPLACE barrier fixup with READ_ONCE
  arm/spinlock: Replace ACCESS_ONCE with READ_ONCE
  arm64/spinlock: Replace ACCESS_ONCE READ_ONCE
  mips/gup: Replace ACCESS_ONCE with READ_ONCE
  x86/gup: Replace ACCESS_ONCE with READ_ONCE
  x86/spinlock: Replace ACCESS_ONCE with READ_ONCE
  mm: replace ACCESS_ONCE with READ_ONCE or barriers
  kernel: Provide READ_ONCE and ASSIGN_ONCE
2014-12-20 16:48:59 -08:00
Linus Torvalds
bfc7249cc2 Please consider pulling the clk framework changes toward 3.19. It is
much later than usual due to several last minute bugs that had to be
 addressed. As usual the majority of changes are new drivers and
 modifications to existing drivers. The core recieved many fixes along
 with the groundwork for several large changes coming in the future which
 will better parition clock providers from clock consumers.
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Merge tag 'clk-for-linus-3.19' of git://git.linaro.org/people/mike.turquette/linux

Pull clk framework updates from Mike Turquette:
 "This is much later than usual due to several last minute bugs that had
  to be addressed.  As usual the majority of changes are new drivers and
  modifications to existing drivers.  The core recieved many fixes along
  with the groundwork for several large changes coming in the future
  which will better parition clock providers from clock consumers"

* tag 'clk-for-linus-3.19' of git://git.linaro.org/people/mike.turquette/linux: (86 commits)
  clk: samsung: Fix Exynos 5420 pinctrl setup and clock disable failure due to domain being gated
  ARM: OMAP3: clock: fix boot breakage in legacy mode
  ARM: OMAP2+: clock: fix DPLL code to use new determine rate APIs
  clk: Really fix deadlock with mmap_sem
  clk: mmp: fix sparse non static symbol warning
  clk: Change clk_ops->determine_rate to return a clk_hw as the best parent
  clk: change clk_debugfs_add_file to take a struct clk_hw
  clk: Don't expose __clk_get_accuracy
  clk: Don't try to use a struct clk* after it could have been freed
  clk: Remove unused function __clk_get_prepare_count
  clk: samsung: Fix double add of syscore ops after driver rebind
  clk: samsung: exynos4: set parent of sclk_hdmiphy to hdmi
  clk: samsung: exynos4415: Fix build with PM_SLEEP disabled
  clk: samsung: remove unnecessary inclusion of header files from clk.h
  clk: samsung: remove unnecessary CONFIG_OF from clk.c
  clk: samsung: Spelling s/bwtween/between/
  clk: rockchip: Add support for the mmc clock phases using the framework
  clk: rockchip: add bindings for the mmc clocks
  clk: rockchip: rk3288 export i2s0_clkout for use in DT
  clk: rockchip: use clock ID for DMC (memory controller) on rk3288
  ...
2014-12-20 16:42:36 -08:00
Linus Torvalds
a4e1328a9d Merge branch 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull more i2c updates from Wolfram Sang:
 "Included are two bugfixes needing some bigger refactoring (sh_mobile:
  deferred probe with DMA, mv64xxx: fix offload support) and one
  deprecated driver removal I thought would go in via ppc but I
  misunderstood.  It has a proper ack from BenH"

* 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: sh_mobile: fix uninitialized var when debug is enabled
  macintosh: therm_pm72: delete deprecated driver
  i2c: sh_mobile: I2C_SH_MOBILE should depend on HAS_DMA
  i2c: sh_mobile: rework deferred probing
  i2c: sh_mobile: refactor DMA setup
  i2c: mv64xxx: rework offload support to fix several problems
  i2c: mv64xxx: use BIT() macro for register value definitions
2014-12-20 13:52:52 -08:00
Linus Torvalds
cdce6ac277 SCSI for-linus on 20141220
This is a much shorter set of patches that were on the go but didn't make it
 in to the early pull request for the merge window.  It's really a set of bug
 fixes plus some final cleanup work on the new tag queue API.
 
 Signed-off-by: James Bottomley <JBottomley@Parallels.com>
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Merge tag 'scsi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI update from James Bottomley:
 "This is a much shorter set of patches that were on the go but didn't
  make it in to the early pull request for the merge window.  It's
  really a set of bug fixes plus some final cleanup work on the new tag
  queue API"

* tag 'scsi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  storvsc: ring buffer failures may result in I/O freeze
  ipr: set scsi_level correctly for disk arrays
  ipr: add support for async scanning to speed up boot
  scsi_debug: fix missing "break;" in SDEBUG_UA_CAPACITY_CHANGED case
  scsi_debug: take sdebug_host_list_lock when changing capacity
  scsi_debug: improve driver description in Kconfig
  scsi_debug: fix compare and write errors
  qla2xxx: fix race in handling rport deletion during recovery causes panic
  scsi: blacklist RSOC for Microsoft iSCSI target devices
  scsi: fix random memory corruption with scsi-mq + T10 PI
  Revert "[SCSI] mpt3sas: Remove phys on topology change"
  Revert "[SCSI] mpt2sas: Remove phys on topology change."
  esas2r: Correct typos of "validate" in a comment
  fc: FCP_PTA_SIMPLE is 0
  ibmvfc: remove unused tag variable
  scsi: remove MSG_*_TAG defines
  scsi: remove scsi_set_tag_type
  scsi: remove scsi_get_tag_type
  scsi: never drop to untagged mode during queue ramp down
  scsi: remove ->change_queue_type method
2014-12-20 13:42:57 -08:00
Linus Torvalds
5d6a546886 CONFIG_PM_RUNTIME elimination for 3.19-rc1
This removes the last few uses of CONFIG_PM_RUNTIME introduced
 recently and makes that config option finally go away.
 
 CONFIG_PM will be available directly from the menu now and
 also it will be selected automatically if CONFIG_SUSPEND or
 CONFIG_HIBERNATION is set.
 
 /
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Merge tag 'pm-config-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull CONFIG_PM_RUNTIME elimination from Rafael Wysocki:
 "This removes the last few uses of CONFIG_PM_RUNTIME introduced
  recently and makes that config option finally go away.

  CONFIG_PM will be available directly from the menu now and also it
  will be selected automatically if CONFIG_SUSPEND or CONFIG_HIBERNATION
  is set"

* tag 'pm-config-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  PM: Eliminate CONFIG_PM_RUNTIME
  tty: 8250_omap: Replace CONFIG_PM_RUNTIME with CONFIG_PM
  sound: sst-haswell-pcm: Replace CONFIG_PM_RUNTIME with CONFIG_PM
  spi: Replace CONFIG_PM_RUNTIME with CONFIG_PM
2014-12-20 13:37:44 -08:00
Linus Torvalds
787140ad6b Merge branch 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
Pull misc kbuild changes from Michal Marek:
 "There are only a few things in the misc branch:

   - Fix for bugon.cocci semantic patch
   - Kdevelop4 files are .gitignored
   - Put make binrpm-pkg on diet"

* 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
  scripts/package: binrpm-pkg do not create source and devel package
  .gitignore: Add Kdevelop4 project files
  bugon.cocci: fix Options at the macro
2014-12-20 13:33:03 -08:00
Linus Torvalds
d08372ca28 Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
Pull kbuild updates from Michal Marek:
 "Here are the kbuild changes for v3.19-rc1:

   - Cleanups and deduplication in the main Makefile and
     scripts/Makefile.*
   - Sort the output of *config targets in make help
   - Old <linux/version.h> is always removed to avoid a surprise during
     bisecting
   - Warning fix in kconfig"

* 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
  kbuild: remove redundant -rR flag of hdr-inst
  kbuild: Fix make help-<board series> on powerpc
  kbuild: Automatically remove stale <linux/version.h> file
  kconfig: Fix warning "‘jump’ may be used uninitialized"
  Makefile: sort list of defconfig targets in make help output
  kbuild: Remove duplicate $(cmd) definition in Makefile.clean
  kbuild: collect shorthands into scripts/Kbuild.include
2014-12-20 13:31:14 -08:00
Wolfram Sang
fe07adec73 i2c: sh_mobile: fix uninitialized var when debug is enabled
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2014-12-20 09:28:09 +01:00
Linus Torvalds
ecb5ec044a Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs pile #3 from Al Viro:
 "Assorted fixes and patches from the last cycle"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  [regression] chunk lost from bd9b51
  vfs: make mounts and mountstats honor root dir like mountinfo does
  vfs: cleanup show_mountinfo
  init: fix read-write root mount
  unfuck binfmt_misc.c (broken by commit e6084d4)
  vm_area_operations: kill ->migrate()
  new helper: iter_is_iovec()
  move_extent_per_page(): get rid of unused w_flags
  lustre: get rid of playing with ->fs
  btrfs: filp_open() returns ERR_PTR() on failure, not NULL...
2014-12-19 18:19:19 -08:00