Commit Graph

562944 Commits

Author SHA1 Message Date
Laurent Pinchart
92b4b44538 drm: omapdrm: gem: Simplify error handling when creating GEM object
The goto error statement end up just returning NULL without performing
any cleanup, replace it with a direct return.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-12-31 11:25:46 +02:00
Laurent Pinchart
08b710f85c drm: omapdrm: gem: Don't free mmap offset twice
The drm_gem_free_mmap_offset() call in omap_gem_free_object() is
redundant as the same function is called from drm_gem_object_release().
Remove it.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-12-31 11:25:45 +02:00
Laurent Pinchart
74128a237e drm: omapdrm: gem: Fix GEM object destroy in error path
Use the omap_gem_free_object() function to destroy the GEM object in the
omap_gem_new_handle() error path instead of doing it manually (and
incorrectly).

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-12-31 11:25:45 +02:00
Laurent Pinchart
00e9c7c700 drm: omapdrm: gem: Free the correct memory object
The GEM object free handler frees memory allocated by the driver using
the pointer to the drm_gem_object instead of the pointer to the
omap_gem_object that embeds it. This doesn't cause any issue in practice
as the drm_gem_object is the first field of omap_gem_object, but would
cause memory corruption if the structure layout changes. Fix it.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-12-31 11:25:45 +02:00
Laurent Pinchart
ef3f4e9982 drm: omapdrm: gem: Mask out private flags passed from userspace
The 8 high order bits of the buffer flags are reserved for internal use.
Mask them out from the flags passed by userspace.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-12-31 11:25:44 +02:00
Laurent Pinchart
f4302747af drm: omapdrm: gem: Move global usergart variable to omap_drm_private
The structure contains data related to a device instance, it shouldn't
be a global variable.

While at it rename the usergart structures with an omap_drm_ prefix.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-12-31 11:25:44 +02:00
Laurent Pinchart
7ef93b0aa8 drm: omapdrm: gem: Group functions by purpose
Divide the GEM implementation in groups of functions to improve
readability.

No code change is performed by this commit.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-12-31 11:25:43 +02:00
Laurent Pinchart
b902f8f4d6 drm: omapdrm: gem: Remove forward declarations
Reorder functions to get rid of forward declarations

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-12-31 11:25:43 +02:00
Laurent Pinchart
6405e414dd drm: omapdrm: gem: Remove unused function prototypes
Several DRM core function prototypes refer to functions that don't exist
anymore and are thus obviously never called. Remove them.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-12-31 11:25:43 +02:00
Laurent Pinchart
e1c1174f8d drm: omapdrm: Make fbdev emulation optional
Don't compile the fbdev emulation code when fbdev emulation support is
disabled.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-12-31 11:25:42 +02:00
Laurent Pinchart
f8ef29ee45 drm: omapdrm: Fix plane state free in plane reset handler
The plane reset handler frees the plane state and allocates a new
default state, but when doing so attempt to free the plane state using
the base plane state pointer instead of casting it to the
driver-specific state object that has been allocated. Fix it by using
the omap_plane_atomic_destroy_state() function to destroy the plane
state instead of duplicating the code.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
[tomi.valkeinen@ti.com: move of the func into separate patch]
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-12-31 11:25:42 +02:00
Tomi Valkeinen
e07323cf1b drm: omapdrm: move omap_plane_reset()
Move omap_plane_reset() function to avoid forward declarations in the
next patch.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-12-31 11:25:41 +02:00
Thierry Reding
e1c49bdcdb drm/omap: Use platform_register/unregister_drivers()
These new helpers simplify implementing multi-driver modules and
properly handle failure to register one driver by unregistering all
previously registered drivers.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-12-31 11:25:41 +02:00
Luis de Bethencourt
d4182e35aa drm: omapdrm: tiler: Remove unneded module alias for tiler
omap_dmm_tiler.c can't be compiled as a module and it is built
unconditionally as part of omapdrm. Since it can't be used as a module,
there is no need for it to have an unused MODULE_ALIAS().

Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-12-31 11:25:40 +02:00
Stephen Rothwell
54255e818e drm/rockchip: vop: export vop_component_ops to modules
Fixes: a67719d182 ("drm/rockchip: vop: spilt register related into rockchip_reg_vop.c")
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Mark Yao <mark.yao@rock-chips.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2015-12-31 17:42:18 +10:00
Dave Airlie
df83690ec2 Merge branch 'drm-rockchip-next-2015-12-28' of https://github.com/markyzq/kernel-drm-rockchip into drm-next
These patches convert drm/rockchip to atomic API and add rk3036 vop support.

* 'drm-rockchip-next-2015-12-28' of https://github.com/markyzq/kernel-drm-rockchip:
  dt-bindings: add document for rk3036-vop
  drm/rockchip: vop: add rk3036 vop support
  drm/rockchip: vop: spilt scale regsters
  drm/rockchip: vop: spilt register related into rockchip_reg_vop.c
  drm/rockchip: vop: move interrupt registers into vop_data
  drm/rockchip: vop: merge vop cfg_done into vop_data
  drm/rockchip: dw_hdmi: use encoder enable function
  drm: bridge/dw_hdmi: add atomic API support
  drm/rockchip: direct config connecter gate and out_mode
  drm/rockchip: support atomic asynchronous commit
  drm/rockchip: Optimization vop mode set
  drm/rockchip: Convert to support atomic API
  drm/rockchip: vop: replace dpms with enable/disable
  drm/rockchip: Use new vblank api drm_crtc_vblank_*
2015-12-30 07:18:12 +10:00
Mark Yao
d4d3c6cbc2 dt-bindings: add document for rk3036-vop
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Ian Campbell <ijc+devicetree@hellion.org.uk>
Cc: Kumar Gala <galak@codeaurora.org>
Cc: devicetree@vger.kernel.org

Signed-off-by: Mark Yao <mark.yao@rock-chips.com>
Acked-by: Rob Herring <robh@kernel.org>
2015-12-28 09:08:53 +08:00
Mark Yao
f767345350 drm/rockchip: vop: add rk3036 vop support
RK3036 registers layout is quite difference with rk3288 layout,
The IC design with different framework, rk3036 vop is VOP LITE,
and rk3288 is VOP FULL.

RK3036 support two overlay plane and one hwc plane, max output
resolution is 1080p. it support IOMMU, and its IOMMU same as
rk3288's.

Signed-off-by: Mark Yao <mark.yao@rock-chips.com>
2015-12-28 09:01:48 +08:00
Mark Yao
1194fffbb1 drm/rockchip: vop: spilt scale regsters
There are two version scale control register found on vop,
scale full version found on rk3288, support extension registers.
and scale little version found on rk3036, only support common scale.

Signed-off-by: Mark Yao <mark.yao@rock-chips.com>
2015-12-28 09:01:41 +08:00
Mark Yao
a67719d182 drm/rockchip: vop: spilt register related into rockchip_reg_vop.c
No functional updates. Spilt register related into another file
would be nice to multi vop driver,

Signed-off-by: Mark Yao <mark.yao@rock-chips.com>
2015-12-28 09:01:34 +08:00
Mark Yao
dbb3d94444 drm/rockchip: vop: move interrupt registers into vop_data
Move interrupt registers into vop_data, so it can use at multi-vop driver

Signed-off-by: Mark Yao <mark.yao@rock-chips.com>
2015-12-28 09:01:28 +08:00
Mark Yao
0cf33fe33d drm/rockchip: vop: merge vop cfg_done into vop_data
Move cfg_done register into vop_data, so it can use at multi-vop driver

Signed-off-by: Mark Yao <mark.yao@rock-chips.com>
2015-12-28 09:01:21 +08:00
Mark Yao
a8eef71d38 drm/rockchip: dw_hdmi: use encoder enable function
encoder.enable is more compatible to atomic api than encoder.prepare/commit

Signed-off-by: Mark Yao <mark.yao@rock-chips.com>
2015-12-28 08:57:16 +08:00
Mark Yao
2c5b2cccdb drm: bridge/dw_hdmi: add atomic API support
Fill atomic needed funcs with default atomic helper library.

Rockchip use dw_hdmi, and drm/rockchip will covert to atomic api,
we need dw_hdmi support atomic funcs.

Now another drm driver use dw_hdmi is imx, not yet atomic, so
check DRIVER_ATOMIC at runtime to spilt atomic and not atomic.

Signed-off-by: Mark Yao <mark.yao@rock-chips.com>
2015-12-28 08:55:53 +08:00
Mark Yao
d0e20d0ebf drm/rockchip: direct config connecter gate and out_mode
Both connecter gate and out_mode are not conflict with mode set
configure. Direct setting connecter gate and out_mode, that allow
connector do rockchip_drm_crtc_mode_config after mode set.

Signed-off-by: Mark Yao <mark.yao@rock-chips.com>
2015-12-28 08:50:02 +08:00
Mark Yao
f32fad51ee drm/rockchip: support atomic asynchronous commit
If drm core requests a async commit, rockchip_drm_atomic_commit
will schedule a work task to update later.

Signed-off-by: Mark Yao <mark.yao@rock-chips.com>
2015-12-28 08:49:54 +08:00
Mark Yao
ce3887ed0d drm/rockchip: Optimization vop mode set
Rk3288 vop timing registers is immediately register, when configure
timing on display active time, will cause tearing. use dclk reset is
not a good idea to avoid this tearing. we can avoid tearing by using
standby register.

Vop standby register will take effect at end of current frame, and
go back to work immediately when exit standby.

So we can use standby register to protect this context.

Signed-off-by: Mark Yao <mark.yao@rock-chips.com>
2015-12-28 08:49:48 +08:00
Mark Yao
63ebb9fa7f drm/rockchip: Convert to support atomic API
Rockchip vop not support hw vblank counter, needed check the committed
register if it's really take effect.

Signed-off-by: Mark Yao <mark.yao@rock-chips.com>
2015-12-28 08:49:39 +08:00
Mark Yao
0ad3675d9c drm/rockchip: vop: replace dpms with enable/disable
For vop, power by enable/disable is more suitable then legacy dpms
function, and enable/disable more closely to the new atomic API.

Signed-off-by: Mark Yao <mark.yao@rock-chips.com>
2015-12-28 08:49:32 +08:00
Mark Yao
b5f7b75503 drm/rockchip: Use new vblank api drm_crtc_vblank_*
No functional update, drm_vblank_* is the legacy version of
drm_crtc_vblank_*. and use new api make driver more clean.

Signed-off-by: Mark Yao <mark.yao@rock-chips.com>
2015-12-28 08:49:24 +08:00
Dave Airlie
20f8e032e6 Backmerge drm-fixes merge into Linus's tree into drm-next.
This merges '5b726e06d6e8309e5c9ef4109a32caf27c71dfc8' into drm-next

Just to resolve some merges to make Daniel's life easier.

Signed-off-by: DAve Airlie <airlied@redhat.com>
2015-12-24 08:08:47 +10:00
Linus Torvalds
5b726e06d6 Merge tag 'drm-intel-fixes-2015-12-23' of git://anongit.freedesktop.org/drm-intel
Pull i915 drm fixes from Jani Nikula:
 "Here's a batch of i915 fixes all around.  It may be slightly bigger
  than one would hope for at this stage, but they've all been through
  testing in our -next before being picked up for v4.4.  Also, I missed
  Dave's fixes pull earlier today just because I wanted an extra testing
  round on this.  So I'm fairly confident.

  Wishing you all the things it is customary to wish this time of the
  year"

* tag 'drm-intel-fixes-2015-12-23' of git://anongit.freedesktop.org/drm-intel:
  drm/i915: Correct max delay for HDMI hotplug live status checking
  drm/i915: mdelay(10) considered harmful
  drm/i915: Kill intel_crtc->cursor_bo
  drm/i915: Workaround CHV pipe C cursor fail
  drm/i915: Only spin whilst waiting on the current request
  drm/i915: Limit the busy wait on requests to 5us not 10ms!
  drm/i915: Break busywaiting for requests on pending signals
  drm/i915: Disable primary plane if we fail to reconstruct BIOS fb (v2)
  drm/i915: Set the map-and-fenceable flag for preallocated objects
  drm/i915: Drop the broken cursor base==0 special casing
2015-12-23 10:22:16 -08:00
Linus Torvalds
2bfd43d806 Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
 "Not much happening, should have dequeued this lot earlier.

  One amdgpu, one nouveau and one exynos fix"

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
  drm/exynos: atomic check only enabled crtc states
  drm/nouveau/bios/fan: hardcode the fan mode to linear
  drm/amdgpu: fix user fence handling
2015-12-23 10:11:12 -08:00
Dave Airlie
ade1ba7346 Merge tag 'drm-intel-next-2015-12-18' of git://anongit.freedesktop.org/drm-intel into drm-next
- fix atomic watermark recomputation logic (Maarten)
- modeset sequence fixes for LPT (Ville)
- more kbl enabling&prep work (Rodrigo, Wayne)
- first bits for mst audio
- page dirty tracking fixes from Dave Gordon
- new get_eld hook from Takashi, also included in the sound tree
- fixup cursor handling when placed at address 0 (Ville)
- refactor VBT parsing code (Jani)
- rpm wakelock debug infrastructure ( Imre)
- fbdev is pinned again (Chris)
- tune the busywait logic to avoid wasting cpu cycles (Chris)

* tag 'drm-intel-next-2015-12-18' of git://anongit.freedesktop.org/drm-intel: (81 commits)
  drm/i915: Update DRIVER_DATE to 20151218
  drm/i915/skl: Default to noncoherent access up to F0
  drm/i915: Only spin whilst waiting on the current request
  drm/i915: Limit the busy wait on requests to 5us not 10ms!
  drm/i915: Break busywaiting for requests on pending signals
  drm/i915: don't enable autosuspend on platforms without RPM support
  drm/i915/backlight: prefer dev_priv over dev pointer
  drm/i915: Disable primary plane if we fail to reconstruct BIOS fb (v2)
  drm/i915: Pin the ifbdev for the info->system_base GGTT mmapping
  drm/i915: Set the map-and-fenceable flag for preallocated objects
  drm/i915: mdelay(10) considered harmful
  drm/i915: check that we are in an RPM atomic section in GGTT PTE updaters
  drm/i915: add support for checking RPM atomic sections
  drm/i915: check that we hold an RPM wakelock ref before we put it
  drm/i915: add support for checking if we hold an RPM reference
  drm/i915: use assert_rpm_wakelock_held instead of opencoding it
  drm/i915: add assert_rpm_wakelock_held helper
  drm/i915: remove HAS_RUNTIME_PM check from RPM get/put/assert helpers
  drm/i915: get a permanent RPM reference on platforms w/o RPM support
  drm/i915: refactor RPM disabling due to RC6 being disabled
  ...
2015-12-23 14:22:09 +10:00
Dave Airlie
fd3e14ffbd Merge branch 'drm-next-4.5' of git://people.freedesktop.org/~agd5f/linux into drm-next
[airlied: fixup build problems on arm - added errno.h include]
* 'drm-next-4.5' of git://people.freedesktop.org/~agd5f/linux: (152 commits)
  amd/powerplay: fix copy paste typo in hardwaremanager.c
  amd/powerplay: disable powerplay by default initially
  amd/powerplay: don't enable ucode fan control if vbios has no fan table
  drm/amd/powerplay: show gpu load when print gpu performance for Cz. (v2)
  drm/amd/powerplay: check whether need to enable thermal control. (v2)
  drm/amd/powerplay: add point check to avoid NULL point hang.
  drm/amdgpu/powerplay: Program a calculated value as Deep Sleep clock.
  drm/amd/powerplay: Don't return an error if fan table is missing
  drm/powerplay/hwmgr: log errors in tonga_hwmgr_backend_init
  drm/powerplay: add debugging output to processpptables.c
  drm/powerplay: add debugging output to tonga_processpptables.c
  amd/powerplay: Add structures required to report configuration change
  amd/powerplay: Fix get dal power level
  amd\powerplay Implement get dal power level
  drm/amd/powerplay: display gpu load when print performance for tonga.
  drm/amdgpu/powerplay: enable sysfs and debugfs interfaces late
  drm/amd/powerplay: move shared function of vi to hwmgr. (v2)
  drm/amd/powerplay: check whether enable dpm in powerplay.
  drm/amd/powerplay: fix bug that dpm funcs in debugfs/sysfs missing.
  drm/amd/powerplay: fix boolreturn.cocci warnings
  ...
2015-12-23 14:15:26 +10:00
Linus Torvalds
24bc3ea5df Merge branch 'for-linus' of git://git.kernel.dk/linux-block
Pull block layer fixes from Jens Axboe:
 "Three small fixes for 4.4 final. Specifically:

   - The segment issue fix from Junichi, where the old IO path does a
     bio limit split before potentially bouncing the pages.  We need to
     do that in the right order, to ensure that limitations are met.

   - A NVMe surprise removal IO hang fix from Keith.

   - A use-after-free in null_blk, introduced by a previous patch in
     this series.  From Mike Krinkin"

* 'for-linus' of git://git.kernel.dk/linux-block:
  null_blk: fix use-after-free error
  block: ensure to split after potentially bouncing a bio
  NVMe: IO ending fixes on surprise removal
2015-12-22 16:00:25 -08:00
Linus Torvalds
0bee6ec80b Just one fix for a NFSv4 callback bug introduced in 4.4.
-----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJWeF4NAAoJECebzXlCjuG+PvcQAL3AvxDzDnaNFhZJgWZMnRyC
 OlXlPE4clfiFXSB7C39xNBcn7eCJYLkINCQLu4ywAS+y7/22sX7unCTt7UXL99K3
 GffV/QvxOatSssik+CtS9gIMkRLW9Fs6fuQZ4k5w+UtveISpyFoRfw8hbISABL1w
 NtgGIESXL8WXO+OSbVF/wRV8g1+FVi/gXWAOAoUtHBzyUho2JfECXO1XYz6mQ44M
 HN4Bvx75dU3SieECHRKsq8yRbkPYHP9ron/+MskBZm7VkV/6mboFlFfivNncid0Y
 ivpjeYP5xTj4KoXPlQ3feA9AbADNVshAKeDQYpDxRJimMjr6VVRFVDpzbKJc+5ou
 if9AjZUiX02mHZShKMDsJR3kHBu+OzWLtQIDJUtLTIAaeb+V/2NEScnCyCIibXv7
 l52zqJ7upEYFuUGFYIZgsEKZgOAm7e3appIAtGG5Nt9ejUVR1LVPfsa8u2xXhUgp
 FN1TLmeQw6ZLRXcXa7vHcyQh/gJbPsm3PH514QYS+G3nMyXG8XnYKlMe98uhReno
 A3MH5MxfgyiuUITJopVpZfKoEFpYcid21osmVqiZfawoxr4iTocogDArETW7prCL
 QjN9sF+drlG70m/unDBKpQMPI0fhlmjY/VrK9YNlgvNaYKsJFVJnVFE1rCOuzj01
 ekT3egZmGUR7kX94DuTt
 =UJhV
 -----END PGP SIGNATURE-----

Merge tag 'nfsd-4.4-1' of git://linux-nfs.org/~bfields/linux

Pull nfsd fix from Bruce Fields:
 "Just one fix for a NFSv4 callback bug introduced in 4.4"

* tag 'nfsd-4.4-1' of git://linux-nfs.org/~bfields/linux:
  nfsd: don't hold ls_mutex across a layout recall
2015-12-22 15:52:32 -08:00
Linus Torvalds
e73a31778a KVM/ARM fixes for v4.4-rc7
- A series of fixes to the MTRR emulation, tested in the BZ by several users
   so they should be safe this late
 
 - A fix for a division by zero
 
 - Two very simple ARM and PPC fixes
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2.0.22 (GNU/Linux)
 
 iQEcBAABAgAGBQJWeV/6AAoJEL/70l94x66DqzsH/05YnLi2GsX5WeZHMfIUgzgT
 S/GoIkA7A4E2eXVoGg824MWppSViUzZkWgYFQTG4+KY9WPXzm9z2ij7DIlUHCD6n
 QfevgQx1kIu1obyhm6bYM2xUdM3f7NCsQgw9bXZObB0ay+b/+GjR9/RbCbx60EO5
 K1P+kveK6PFlS9/hc0PLztu6WkPV9BCO1RJUbeAEdnrMbpuQfHC+coR7MHRCiv2V
 iy8f1CqrGaO5YPm9/3GbdH1xMKew4OZShOxTXwtvUThdrLkks2c8sk6FoLzqkznH
 LMHVIpkm4mrIgThZG7VqZMXOrWvBtsCt04Vr9MzCM6QetB02b/Uz0xKvMYx2kZQ=
 =pmYz
 -----END PGP SIGNATURE-----

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull kvm fixes from Paolo Bonzini:

 - A series of fixes to the MTRR emulation, tested in the BZ by several
   users so they should be safe this late

 - A fix for a division by zero

 - Two very simple ARM and PPC fixes

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: x86: Reload pit counters for all channels when restoring state
  KVM: MTRR: treat memory as writeback if MTRR is disabled in guest CPUID
  KVM: MTRR: observe maxphyaddr from guest CPUID, not host
  KVM: MTRR: fix fixed MTRR segment look up
  KVM: VMX: Fix host initiated access to guest MSR_TSC_AUX
  KVM: arm/arm64: vgic: Fix kvm_vgic_map_is_active's dist check
  kvm: x86: move tracepoints outside extended quiescent state
  KVM: PPC: Book3S HV: Prohibit setting illegal transaction state in MSR
2015-12-22 15:47:39 -08:00
Linus Torvalds
ad3d1abb30 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fixes from Martin Schwidefsky:
 "Two late bug fixes for kernel 4.4.

  Merry Christmas"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/dis: Fix handling of format specifiers
  s390/zcrypt: Fix AP queue handling if queue is full
2015-12-22 15:43:18 -08:00
Linus Torvalds
ea82813190 virtio: fixes on top of 4.4-rc5
This includes a single fix for virtio ccw error handling.
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQEcBAABAgAGBQJWdmeoAAoJECgfDbjSjVRpArwIAKuaWLdfu6Aj25QkiENb5PFu
 JghRoy8P1SdGTqNdjbvG1XkxI072rWfrvU+cmVx9GbeZgusWtbeiTeBNT/jXnH/5
 hodG9YdUEZOh2WhROQ+Fo7t1vzqvBWHuU9YdrBnHDbdFQ8300CgNTOsdih2rlEfT
 t5/R3BEE0DXGTXTc3vO35+DVXzX8PA2FD18W7trrAjN7M5DdhCu98Q2VcvMZY/D6
 aSBDPMJZxR0YcRPE97w0dZMLePCYkfmoLryVCVVXm5VZq6zXc7Dhm6ND0/oH+0DB
 f4jxjapNUy+RAmE378ACsVwT992TTk49ZGZjbt4ttGOfFYDTrErrDkCq9QaZX7o=
 =xgGU
 -----END PGP SIGNATURE-----

Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

Pull virtio fix from Michael Tsirkin:
 "This includes a single fix for virtio ccw error handling"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  virtio/s390: handle error values in irb
2015-12-22 15:37:19 -08:00
Mickaël Salaün
de3793796f um: Fix pointer cast
Fix a pointer cast typo introduced in v4.4-rc5 especially visible for
the i386 subarchitecture where it results in a kernel crash.

[ Also removed pointless cast as per Al Viro - Linus ]

Fixes: 8090bfd2bb ("um: Fix fpstate handling")
Signed-off-by: Mickaël Salaün <mic@digikod.net>
Cc: Jeff Dike <jdike@addtoit.com>
Acked-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-12-22 15:31:51 -08:00
Dave Airlie
9116199536 Merge branch 'drm-tda998x-devel' of git://ftp.arm.linux.org.uk/~rmk/linux-arm into drm-next
These changes from Liviu add support for atomic mode setting, add the
TMDS clock limitation according to the device, and ensure that we
correctly clean up in the unbind function.

* 'drm-tda998x-devel' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
  drm/i2c: tda998x: Add support for atomic modesetting
  drm/i2c: tda998x: increase the supported dotclock frequency to 165MHz for TDA19988
  drm/i2c: tda998x: unregister the connector in the unbind function
2015-12-23 09:21:12 +10:00
Dave Airlie
f884a507e6 Merge branch 'drm-armada-devel' of git://ftp.arm.linux.org.uk/~rmk/linux-arm into drm-next
These are the patches from Daniel Vetter, getting rid of struct_mutex
from the Armada DRM driver.

* 'drm-armada-devel' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
  drm/armada: use a private mutex to protect priv->linear
  drm/armada: drop struct_mutex from cursor paths
  drm/armada: don't grab dev->struct_mutex for in mmap offset ioctl
  drm/armada: plug leak in dumb_map_offset
  drm/armada: use unlocked gem unreferencing
2015-12-23 09:19:58 +10:00
Mike Krinkin
e827120146 null_blk: fix use-after-free error
blk_end_request_all may free request, so we need to save
request_queue pointer before blk_end_request_all call.

The problem was introduced in commit cf8ecc5a84
("null_blk: guarantee device restart in all irq modes")
and causes general protection fault with slab poisoning
enabled.

Fixes: cf8ecc5a84 ("null_blk: guarantee device
       restart in all irq modes")

Signed-off-by: Mike Krinkin <krinkin.m.u@gmail.com>
Reviewed-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
2015-12-22 10:42:48 -07:00
Junichi Nomura
23688bf4f8 block: ensure to split after potentially bouncing a bio
blk_queue_bio() does split then bounce, which makes the segment
counting based on pages before bouncing and could go wrong. Move
the split to after bouncing, like we do for blk-mq, and the we
fix the issue of having the bio count for segments be wrong.

Fixes: 54efd50bfd ("block: make generic_make_request handle arbitrarily sized bios")
Cc: stable@vger.kernel.org
Tested-by: Artem S. Tashkinov <t.artem@lycos.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
2015-12-22 10:26:53 -07:00
Keith Busch
b5875222de NVMe: IO ending fixes on surprise removal
This patch fixes a lost request discovered during IO + hot removal.

The driver's pci removal deletes gendisks prior to shutting down the
controller to allow dirty data to sync. Dirty data can not be synced on
a surprise removal, though, and would potentially block indefinitely.

The driver previously had marked the queue as dying in this scenario
to prevent new requests from attempting, however it will still block
for requests that already entered the queue. This patch fixes this by
quiescing IO first, then aborting the requeued requests before deleting
disks.

Reported-by: Sujith Pandel <sujith_pandel@dell.com>
Signed-off-by: Keith Busch <keith.busch@intel.com>
Tested-by: Sujith Pandel <sujith_pandel@dell.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
2015-12-22 10:12:04 -07:00
Andrew Honig
0185604c2d KVM: x86: Reload pit counters for all channels when restoring state
Currently if userspace restores the pit counters with a count of 0
on channels 1 or 2 and the guest attempts to read the count on those
channels, then KVM will perform a mod of 0 and crash.  This will ensure
that 0 values are converted to 65536 as per the spec.

This is CVE-2015-7513.

Signed-off-by: Andy Honig <ahonig@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-12-22 15:36:26 +01:00
Paolo Bonzini
e24dea2afc KVM: MTRR: treat memory as writeback if MTRR is disabled in guest CPUID
Virtual machines can be run with CPUID such that there are no MTRRs.
In that case, the firmware will never enable MTRRs and it is obviously
undesirable to run the guest entirely with UC memory.  Check out guest
CPUID, and use WB memory if MTRR do not exist.

Cc: qemu-stable@nongnu.org
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=107561
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-12-22 15:29:00 +01:00
Paolo Bonzini
fa7c4ebd5a KVM: MTRR: observe maxphyaddr from guest CPUID, not host
Conversion of MTRRs to ranges used the maxphyaddr from the boot CPU.
This is wrong, because var_mtrr_range's mask variable then is discontiguous
(like FF00FFFF000, where the first run of 0s corresponds to the bits
between host and guest maxphyaddr).  Instead always set up the masks
to be full 64-bit values---we know that the reserved bits at the top
are zero, and we can restore them when reading the MSR.  This way
var_mtrr_range gets a mask that just works.

Fixes: a13842dc66
Cc: qemu-stable@nongnu.org
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=107561
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-12-22 15:28:56 +01:00
Alexis Dambricourt
a7f2d78657 KVM: MTRR: fix fixed MTRR segment look up
This fixes the slow-down of VM running with pci-passthrough, since some MTRR
range changed from MTRR_TYPE_WRBACK to MTRR_TYPE_UNCACHABLE.  Memory in the
0K-640K range was incorrectly treated as uncacheable.

Fixes: f7bfb57b3e
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=107561
Cc: qemu-stable@nongnu.org
Signed-off-by: Alexis Dambricourt <alexis.dambricourt@gmail.com>
[Use correct BZ for "Fixes" annotation.  - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-12-22 15:28:37 +01:00