Michel Dänzer [Fri, 5 Aug 2016 09:36:10 +0000 (18:36 +0900)]
drm/ttm: Wait for a BO to become idle before unbinding it from GTT
Fixes hangs under memory pressure, e.g. running the piglit test
tex3d-maxsize concurrently with other tests.
Fixes:
17d33bc9d6ef ("drm/ttm: drop waiting for idle in ttm_bo_evict.")
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Huang Rui [Tue, 2 Aug 2016 05:15:12 +0000 (13:15 +0800)]
drm/amdgpu: update golden setting of polaris10
Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Ken Wang <Qingqing.Wang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Huang Rui [Tue, 2 Aug 2016 03:30:05 +0000 (11:30 +0800)]
drm/amdgpu: update golden setting of stoney
Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Huang Rui [Tue, 2 Aug 2016 03:26:34 +0000 (11:26 +0800)]
drm/amdgpu: update golden setting of polaris11
Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Ken Wang <Qingqing.Wang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Huang Rui [Tue, 2 Aug 2016 03:28:47 +0000 (11:28 +0800)]
drm/amdgpu: update golden setting of carrizo
Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Huang Rui [Tue, 2 Aug 2016 03:21:35 +0000 (11:21 +0800)]
drm/amdgpu: update golden setting of iceland
Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Eric Huang [Thu, 28 Jul 2016 21:25:01 +0000 (17:25 -0400)]
drm/amd/amdgpu: change pptable output format from ASCII to binary
Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Eric Huang <JinHuiEric.Huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Alex Deucher [Fri, 29 Jul 2016 22:14:39 +0000 (18:14 -0400)]
drm/amdgpu/ci: add mullins to default case for smc ucode
It's already covered by the default case, but add it for
consistency.
Reviewed-by: Alexandre Demers <alexandre.f.demers@gmail.com>
Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Alex Deucher [Fri, 29 Jul 2016 22:03:42 +0000 (18:03 -0400)]
drm/amdgpu/gmc7: add missing mullins case
Looks like this got missed when we ported the code from radeon.
Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Dave Airlie [Fri, 29 Jul 2016 19:45:30 +0000 (05:45 +1000)]
Merge tag 'imx-drm-fixes-2016-07-27' of git://git.pengutronix.de/git/pza/linux into drm-next
imx-drm ldb mode set fix
- fix imx-ldb mode setting, which was broken by commit
49f98bc4d44a4 ("drm/imx:
store internal bus configuration in crtc state")
* tag 'imx-drm-fixes-2016-07-27' of git://git.pengutronix.de/git/pza/linux:
drm/imx: imx-ldb: do not try to dereference crtc->state->state in encoder mode_set
Dave Airlie [Fri, 29 Jul 2016 19:37:36 +0000 (05:37 +1000)]
Merge branch 'drm-next-4.8' of git://people.freedesktop.org/~agd5f/linux into drm-next
A few more patches for amdgpu and radeon for 4.8. The big change is
the additional power feature enablement for polaris that was pending
the 4.7 back merge. The rest are mainly bug fixes and cleanups.
* 'drm-next-4.8' of git://people.freedesktop.org/~agd5f/linux: (59 commits)
drm/amd/powerplay: remove enable_clock_power_gatings_tasks from initialize and resume events
drm/amd/powerplay: move clockgating to after ungating power in pp for uvd/vce
drm/amdgpu: add query device id and revision id into system info entry at CGS
drm/amdgpu: add new definition in bif header
drm/amd/powerplay: rename smum header guards
drm/amdgpu: enable UVD context buffer for older HW
drm/amdgpu: fix default UVD context size
drm/amdgpu: fix incorrect type of info_id
drm/amdgpu: make amdgpu_cgs_call_acpi_method as static
drm/amdgpu: comment out unused defaults_staturn_pro static const structure to fix the build
drm/amdgpu: enable UVD VM only on polaris
drm/amdgpu: increase timeout of IB test
drm/amdgpu: add destroy session when generate VCE destroy msg.
drm/amd: fix deadlock of job_list_lock V2
drm/amd: reset hw count when reset job
drm/amdgpu: free handles after fini the context
drm/ttm: partial revert "cleanup ttm_tt_(unbind|destroy)" v3
drm/amdgpu: add a fence timeout for the IB tests v2
drm/amdgpu: move UVD IB test into common code v2
drm/amdgpu: use begin/end_use for VCE power/clock gating
...
Dave Airlie [Fri, 29 Jul 2016 19:26:07 +0000 (05:26 +1000)]
Merge tag 'topic/drm-misc-2016-07-28' of git://anongit.freedesktop.org/drm-intel into drm-next
A few more simple fixes that Sean&I collected. There's a bunch of bigger
things on dri-devel, but I think those are all too late for 4.8 really.
I'll try and go collect them after -rc1 for 4.9.
* tag 'topic/drm-misc-2016-07-28' of git://anongit.freedesktop.org/drm-intel:
drm/arm: mali-dp: Fix error return code in malidp_bind()
drm/arm: mali-dp: Remove redundant dev_err call in malidp_bind()
drm/gma500: remove unnecessary stub for fb_ioctl()
apple-gmux: Sphinxify docs
drm/arm: mali-dp: Set crtc.port to the port instead of the endpoint
drm/sti: use new Reset API
drm/etnaviv: Optimize error handling in etnaviv_gem_new_userptr()
drm/etnaviv: Delete unnecessary checks before two function calls
drm/vmwgfx: Delete an unnecessary check before the function call "vfree"
drm/qxl: Delete an unnecessary check before drm_gem_object_unreference_unlocked()
drm/mgag200: Delete an unnecessary check before drm_gem_object_unreference_unlocked()
drm/bridge: ps8622: Delete an unnecessary check before backlight_device_unregister()
GPU-DRM-GMA500: Delete unnecessary checks before two function calls
GPU-DRM-OMAP: Delete unnecessary checks before two function calls
Tom St Denis [Thu, 28 Jul 2016 13:46:28 +0000 (09:46 -0400)]
drm/amd/powerplay: remove enable_clock_power_gatings_tasks from initialize and resume events
Setting PG state this early would cause lock ups in the IP block
initialized functions.
Signed-off-by: Tom St Denis <tom.stdenis@amd.com>
Reviewed-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Tom St Denis [Thu, 28 Jul 2016 13:47:12 +0000 (09:47 -0400)]
drm/amd/powerplay: move clockgating to after ungating power in pp for uvd/vce
Cannot set clockgating state before ungating power.
Signed-off-by: Tom St Denis <tom.stdenis@amd.com>
Reviewed-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Huang Rui [Tue, 12 Jul 2016 05:54:05 +0000 (13:54 +0800)]
drm/amdgpu: add query device id and revision id into system info entry at CGS
This patch adds device id and revision into system info entry at CGS,
it's able to get PCI device id and revision id from amdgpu, it might
get more info in future.
PCI device id will be also used on powerplay part at current.
Suggested-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Huang Rui [Thu, 14 Jul 2016 16:31:05 +0000 (00:31 +0800)]
drm/amdgpu: add new definition in bif header
This patch adds new definition in bif header, and will be used on
iceland HW powertune part.
Signed-off-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Huang Rui [Mon, 25 Jul 2016 08:54:34 +0000 (16:54 +0800)]
drm/amd/powerplay: rename smum header guards
This patch renames the smum header guards to align with the file name.
Reported-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Ken Wang <Qingqing.Wang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Christian König [Tue, 26 Jul 2016 10:05:40 +0000 (12:05 +0200)]
drm/amdgpu: enable UVD context buffer for older HW
Supported starting on certain FW versions.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Leo Liu <leo.liu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Christian König [Tue, 26 Jul 2016 08:51:29 +0000 (10:51 +0200)]
drm/amdgpu: fix default UVD context size
Context buffers should be denied by default, not allowed.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Leo Liu <leo.liu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Huang Rui [Sat, 16 Jul 2016 05:24:45 +0000 (13:24 +0800)]
drm/amdgpu: fix incorrect type of info_id
Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Huang Rui [Sat, 16 Jul 2016 05:04:22 +0000 (13:04 +0800)]
drm/amdgpu: make amdgpu_cgs_call_acpi_method as static
Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Slava Grigorev [Tue, 19 Jul 2016 04:24:10 +0000 (00:24 -0400)]
drm/amdgpu: comment out unused defaults_staturn_pro static const structure to fix the build
Signed-off-by: Slava Grigorev <slava.grigorev@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Christian König [Mon, 25 Jul 2016 14:37:06 +0000 (16:37 +0200)]
drm/amdgpu: enable UVD VM only on polaris
Stoney support it, but doesn't has unlimited session support.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Leo Liu <leo.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Chunming Zhou [Tue, 26 Jul 2016 05:56:31 +0000 (13:56 +0800)]
drm/amdgpu: increase timeout of IB test
we should give enough time to IB test.
Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Rex Zhu [Thu, 21 Jul 2016 12:46:55 +0000 (20:46 +0800)]
drm/amdgpu: add destroy session when generate VCE destroy msg.
Signed-off-by: David Mao <David.Mao@amd.com>
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Chunming Zhou [Mon, 25 Jul 2016 05:55:35 +0000 (13:55 +0800)]
drm/amd: fix deadlock of job_list_lock V2
run_job involves mutex, which could sleep.
V2: use list_for_each_entry_safe, since the job might complete
while we dropped the lock.
Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Chunming Zhou [Fri, 22 Jul 2016 05:01:02 +0000 (13:01 +0800)]
drm/amd: reset hw count when reset job
Means the hw ring is empty after gpu reset.
Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Leo Liu [Fri, 22 Jul 2016 18:13:11 +0000 (14:13 -0400)]
drm/amdgpu: free handles after fini the context
This will make sure all the submissions from different contexts gets
finished, and then we close the session and free up the handles.
This will fix the issue that session clean-up is not get done properly,
when with the command `kill -9'
Signed-off-by: Leo Liu <leo.liu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Christian König [Thu, 21 Jul 2016 10:18:19 +0000 (12:18 +0200)]
drm/ttm: partial revert "cleanup ttm_tt_(unbind|destroy)" v3
We still need to unbind explicitly during a move.
This partial reverts commit
ff20caa0bcbfef9f7686f8d1868a3b990921afd6.
v2: remove unnecessary check and unused variable
v3: fix typo in commit message
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Christian König [Tue, 5 Jul 2016 19:07:17 +0000 (21:07 +0200)]
drm/amdgpu: add a fence timeout for the IB tests v2
10ms should be enough for now.
v2: fix some typos in CIK code
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Christian König [Tue, 5 Jul 2016 14:47:54 +0000 (16:47 +0200)]
drm/amdgpu: move UVD IB test into common code v2
Since we now raise the clocks from begin_use() we don't need
a separate function for each hw generation any more.
v2: remove unintentional lowering of the UVD clocks, fix typos for CIK hw.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Christian König [Wed, 20 Jul 2016 14:53:36 +0000 (16:53 +0200)]
drm/amdgpu: use begin/end_use for VCE power/clock gating
This fixes turning power and clock on when it is actually needed.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Christian König [Wed, 20 Jul 2016 12:11:26 +0000 (14:11 +0200)]
drm/amdgpu: use begin/end_use for UVD power/clock gating
This fixes turning power and clock on when it is actually needed.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Christian König [Wed, 20 Jul 2016 11:49:34 +0000 (13:49 +0200)]
drm/amdgpu: add begin/end_use ring callbacks
For manual UVD/VCE power and clock gating.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Christian König [Tue, 19 Jul 2016 12:44:39 +0000 (14:44 +0200)]
drm/amdgpu: remove fence_lock
Was never used as far as I can see.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Christian König [Tue, 19 Jul 2016 12:34:17 +0000 (14:34 +0200)]
drm/amdgpu: fix indentation in struct amdgpu_ring
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Rex Zhu [Tue, 12 Jul 2016 09:32:36 +0000 (17:32 +0800)]
drm/amd/powerplay: fix issue can't enable vce dpm.
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Eric Huang <JinhuiEric.Huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Rex Zhu [Mon, 18 Jul 2016 16:19:08 +0000 (00:19 +0800)]
drm/amdgpu: add bypass mode for vce3.0
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Eric Huang <JinhuiEric.Huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Rex Zhu [Wed, 20 Jul 2016 10:40:09 +0000 (18:40 +0800)]
Revert "drm/amd/powerplay: workaround issue that when uvd dpm disabled,"
This reverts commit <
2ded8c7f04825bc5cde2624f6aa83f1ff62672c0>
As we enabled bypass mode for uvd on polaris10 when clockgating.
so no need to set uvd clock manually.
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Christian König<christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Rex Zhu [Wed, 20 Jul 2016 10:13:47 +0000 (18:13 +0800)]
drm/amd/powerplay: fix typo error when set clock gate state.
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Christian König<christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
jimqu [Tue, 19 Jul 2016 06:58:02 +0000 (14:58 +0800)]
drm/amdgpu: correct coding style
Signed-off-by: JimQu <Jim.Qu@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Christian König [Thu, 14 Jul 2016 12:34:17 +0000 (14:34 +0200)]
drm/amdgpu: increment driver minor
We need to check on Polaris if UVD session context is allowed or not.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Christian König [Thu, 23 Jun 2016 10:11:46 +0000 (12:11 +0200)]
drm/amdgpu: implement UVD VM mode for Stoney v2
Starting with Stoney we support running UVD in VM mode as well.
v2: rebased, only enable on Polaris for now.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Nils Wallménius [Sun, 24 Apr 2016 11:22:31 +0000 (13:22 +0200)]
drm/amd/powerplay: Delete unused functions in ppevvmath.h
Signed-off-by: Nils Wallménius <nils.wallmenius@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Nils Wallménius [Sun, 24 Apr 2016 11:22:30 +0000 (13:22 +0200)]
drm/amd/powerplay: Mark functions of ppevvmath.h static
This introduces some warnings due to unused functions, that are
deleted in the following commit.
Signed-off-by: Nils Wallménius <nils.wallmenius@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Bhaktipriya Shridhar [Sat, 16 Jul 2016 11:30:44 +0000 (17:00 +0530)]
drm/radeon: Remove deprecated create_singlethread_workqueue
alloc_workqueue replaces deprecated create_singlethread_workqueue().
Each hardware CRTC has a single flip work queue.
When a radeon_flip_work_func item is queued, it needs to be executed
ASAP because even a slight delay may cause the flip to be delayed by
one refresh cycle.
Hence, a dedicated workqueue with WQ_HIGHPRI set, has been used here
since a delay can cause the outcome to miss the refresh cycle.
Since there are only a fixed number of work items, explicit concurrency
limit is unnecessary here.
Reviewed-by: Christian König <christian.koenig@amd.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Bhaktipriya Shridhar <bhaktipriya96@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
SF Markus Elfring [Sat, 16 Jul 2016 15:10:28 +0000 (17:10 +0200)]
drm/amd/powerplay: Delete an unnecessary variable initialisation in phm_dispatch_table()
The variable "result" will be set to an appropriate value a bit later.
Thus omit the explicit initialisation at the beginning.
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Markus Elfring [Sat, 16 Jul 2016 13:36:36 +0000 (15:36 +0200)]
drm/amd/powerplay: Change assignment for a buffer variable in phm_dispatch_table() v2
The variable "temp_storage" was eventually reassigned with a pointer.
Thus omit the explicit initialisation at the beginning.
v2: agd: fix coding style
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Markus Elfring [Sat, 16 Jul 2016 13:05:45 +0000 (15:05 +0200)]
drm/amdgpu: Change assignment for a variable in amdgpu_cgs_acpi_eval_object()
Indicate successful function execution only at the end.
Thus omit initialisation for the variable "result" at the beginning.
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Markus Elfring [Sat, 16 Jul 2016 12:54:12 +0000 (14:54 +0200)]
drm/amdgpu: Delete an unnecessary variable initialisation in amdgpu_cgs_acpi_eval_object()
The variable "argument" will be set to an appropriate value a bit later.
Thus omit the explicit initialisation at the beginning.
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Markus Elfring [Sat, 16 Jul 2016 12:00:28 +0000 (14:00 +0200)]
drm/amdgpu: Delete a variable in amdgpu_cgs_acpi_eval_object()
The local variable "func_no" was assigned a value at two places.
But it was not read within this function. Thus delete it.
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Markus Elfring [Sat, 16 Jul 2016 11:43:44 +0000 (13:43 +0200)]
drm/amdgpu: One function call less in amdgpu_cgs_acpi_eval_object() after error detection
The kfree() function was called in one case by the
amdgpu_cgs_acpi_eval_object() function during error handling
even if the passed variable "obj" contained a null pointer.
* Adjust jump targets according to the Linux coding style convention.
* Delete unnecessary initialisations for the variables "obj"
and "params" then.
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Markus Elfring [Sat, 16 Jul 2016 09:28:36 +0000 (11:28 +0200)]
drm/amdgpu: Delete an unnecessary check before drm_gem_object_unreference_unlocked()
The drm_gem_object_unreference_unlocked() function tests whether
its argument is NULL and then returns immediately.
Thus the test around the call is not needed.
This issue was detected by using the Coccinelle software.
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Markus Elfring [Tue, 12 Jul 2016 20:00:55 +0000 (22:00 +0200)]
GPU-DRM-Radeon: Delete an unnecessary check before drm_gem_object_unreference_unlocked()
The drm_gem_object_unreference_unlocked() function tests whether
its argument is NULL and then returns immediately.
Thus the test around the call is not needed.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Edward O'Callaghan [Tue, 12 Jul 2016 00:17:57 +0000 (10:17 +1000)]
drivers/amdgpu: Remove redundant itermediate return val
Found-by: Coccinelle
Signed-off-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Reviewed-by: Tom St Denis <tom.stdenis@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Edward O'Callaghan [Tue, 12 Jul 2016 00:17:56 +0000 (10:17 +1000)]
drivers/amdgpu: Use canonical boolean form in various predicates
V.2: Fixup by hand to remove a few instances of redundant '()'
left over.
Found-by: Coccinelle
Signed-off-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Reviewed-by: Tom St Denis <tom.stdenis@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Edward O'Callaghan [Tue, 12 Jul 2016 00:17:55 +0000 (10:17 +1000)]
drivers/amdgpu: Remove redundant casts on kzalloc() calls
Found-by: Coccinelle
Signed-off-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Reviewed-by: Tom St Denis <tom.stdenis@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Edward O'Callaghan [Tue, 12 Jul 2016 00:17:54 +0000 (10:17 +1000)]
drivers/amdgpu: Remove redundant NULL check before kfree()
Found-by: Coccinelle
Signed-off-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Reviewed-by: Tom St Denis <tom.stdenis@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Edward O'Callaghan [Tue, 12 Jul 2016 00:17:53 +0000 (10:17 +1000)]
drivers/amdgpu: Use canonical form in branch predicates
Found-by: Coccinelle
Signed-off-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Reviewed-by: Tom St Denis <tom.stdenis@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Edward O'Callaghan [Tue, 12 Jul 2016 00:17:52 +0000 (10:17 +1000)]
drivers/amdgpu: Use 'true/false' for bool typed variables
Found-by: Coccinelle
Signed-off-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Reviewed-by: Tom St Denis <tom.stdenis@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Edward O'Callaghan [Tue, 12 Jul 2016 00:17:51 +0000 (10:17 +1000)]
drivers/amdgpu: Remove spurious semicolons
Found-by: Coccinelle
Signed-off-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Reviewed-by: Tom St Denis <tom.stdenis@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Rex Zhu [Wed, 8 Jun 2016 04:56:20 +0000 (12:56 +0800)]
drm/amd/powerplay: enable DiDt feature for polaris10/11.
DIDT is a power saving feature which helps limit power
consumption in order to hit a target power allocation.
v1: delete temp file added accidentally.
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Rex Zhu [Wed, 29 Jun 2016 12:59:59 +0000 (20:59 +0800)]
drm/amd/powerplay: populate SMC ACPI minimum voltage using VBIOS boot SCLK and MCLK
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Alex Deucher [Thu, 28 Jul 2016 13:46:28 +0000 (09:46 -0400)]
drm/amdgpu/powerplay: partial revert of endian fixes
This fixes a warning on big endian. Bitfields need to
be handled properly.
Cc: Arnd Bergmann <arnd@arndb.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Alex Deucher [Wed, 27 Jul 2016 20:39:19 +0000 (16:39 -0400)]
drm/radeon: drop confusing message about backlight control
The message is harmless and confusing. On PX systems,
there is one ATIF method, but potentially multiple GPUs
leading to an error on the GPU with no backlight control.
Bug: https://bugzilla.kernel.org/show_bug.cgi?id=115011
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: Hans de Goede <jwrdegoede@fedoraproject.org>
Nicholas Mc Guire [Tue, 19 Jul 2016 19:54:06 +0000 (21:54 +0200)]
drm/radeon/ci add comment to document intentionally unreachable code
commit
d967be9b80a5 ("drm/radeon/ci: disable needless sclk changes")
introduces an unreachable if(C != C) conditional code section
flagged by coccinelle script bad_conditional.cocci:
Add a comment to make it clear that this is intentional.
Fixes:
d967be9b80a5 ("drm/radeon/ci: disable needless sclk changes")
Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Lyude [Mon, 18 Jul 2016 15:41:37 +0000 (11:41 -0400)]
drm/amdgpu: Disable RPM helpers while reprobing connectors on resume
Just about all of amdgpu's connector probing functions try to acquire
runtime PM refs. If we try to do this in the context of
amdgpu_resume_kms by calling drm_helper_hpd_irq_event(), we end up
deadlocking the system.
Since we're guaranteed to be holding the spinlock for RPM in
amdgpu_resume_kms, and we already know the GPU is in working order, we
need to prevent the RPM helpers from trying to run during the initial
connector reprobe on resume.
There's a couple of solutions I've explored for fixing this, but this
one by far seems to be the simplest and most reliable (plus I'm pretty
sure that's what disable_depth is there for anyway).
Reproduction recipe:
- Get any laptop dual GPUs using PRIME
- Make sure runtime PM is enabled for amdgpu
- Boot the machine
- If the machine managed to boot without hanging, switch out of X to
another VT. This should definitely cause X to hang infinitely.
Changes since v1:
- add appropriate #ifdef checks for CONFIG_PM. This is not very
useful, but it appears some kernel test suites test compiling amdgpu
with CONFIG_PM disabled, which results in this patch breaking the builds
if we don't include this #ifdef
Cc: stable@vger.kernel.org
Cc: Alex Deucher <alexdeucher@gmail.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Lyude <cpaul@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Alex Deucher [Wed, 27 Jul 2016 18:56:12 +0000 (14:56 -0400)]
drm/radeon: init atpx at switcheroo register time v2
If we do it at enable time, it's too late for the feature
checks.
v2: drop .init setting as per Peter's comments
bug: https://bugzilla.kernel.org/show_bug.cgi?id=115321
Reviewed-by: Peter Wu <peter@lekensteyn.nl>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: Peter Wu <peter@lekensteyn.nl>
Alex Deucher [Wed, 27 Jul 2016 18:52:35 +0000 (14:52 -0400)]
drm/amdgpu: init atpx at switcheroo register time (v2)
If we do it at enable time, it's too late for the feature
checks.
v2: drop .init setting as per Peter's comments
Reviewed-by: Peter Wu <peter@lekensteyn.nl>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: Peter Wu <peter@lekensteyn.nl>
Ville Syrjälä [Thu, 28 Jul 2016 14:54:42 +0000 (17:54 +0300)]
drm: aux ->transfer() can return 0, deal with it
Restore the correct behaviour (as in check msg.reply) when aux
->transfer() returns 0. It got removed in
commit
82922da39190 ("drm/dp_helper: Retry aux transactions on all errors")
Now I can actually dump the "entire" DPCD on a Dell UP2314Q with
ddrescue. It has some offsets in the DPCD that can't be read
for some resaon, all you get is defers. Previously ddrescue would
just give up at the first unredable offset on account of
read() returning 0 means EOF. Here's the ddrescue log
for the interested:
0x00000000 0x00001400 +
0x00001400 0x00000030 -
0x00001430 0x000001D0 +
0x00001600 0x00000030 -
0x00001630 0x0001F9D0 +
0x00021000 0x00000001 -
0x00021001 0x000DEFFF +
Cc: Lyude <cpaul@redhat.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch
Cc: stable@vger.kernel.org
Fixes:
82922da39190 ("drm/dp_helper: Retry aux transactions on all errors")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Alex Deucher [Wed, 27 Jul 2016 19:31:59 +0000 (15:31 -0400)]
drm/amdgpu: fix firmware info version checks
Some of the checks didn't handle frev 2 tables properly.
amdgpu doesn't support any tables pre-frev 2, so drop
the checks.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Alex Deucher [Wed, 27 Jul 2016 19:28:56 +0000 (15:28 -0400)]
drm/radeon: fix firmware info version checks
Some of the checks didn't handle frev 2 tables properly.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Wei Yongjun [Thu, 28 Jul 2016 02:14:26 +0000 (02:14 +0000)]
drm/arm: mali-dp: Fix error return code in malidp_bind()
Fix to return error code -EINVAL from the error handling
case instead of 0, as done elsewhere in this function.
Fixes:
3c31760e760c ('drm/arm: mali-dp: Set crtc.port to the port
instead of the endpoint')
Signed-off-by: Wei Yongjun <weiyj.lk@gmail.com>
Acked-by: Brian Starkey <brian.starkey@arm.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1469672066-13401-1-git-send-email-weiyj.lk@gmail.com
Wei Yongjun [Thu, 28 Jul 2016 02:09:13 +0000 (02:09 +0000)]
drm/arm: mali-dp: Remove redundant dev_err call in malidp_bind()
There is a error message within devm_ioremap_resource
already, so remove the DRM_ERROR call to avoid redundant
error message.
Signed-off-by: Wei Yongjun <weiyj.lk@gmail.com>
Acked-by: Liviu Dudau <Liviu.Dudau@arm.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1469671753-12961-1-git-send-email-weiyj.lk@gmail.com
Stefan Christ [Wed, 27 Jul 2016 12:24:30 +0000 (14:24 +0200)]
drm/gma500: remove unnecessary stub for fb_ioctl()
Stub implementation of fb_ioctl can be omitted, because function
do_fb_ioctl already returns -ENOTTY when fb_ioctl is not assigned.
Signed-off-by: Stefan Christ <s.christ@phytec.de>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1469622270-10803-1-git-send-email-s.christ@phytec.de
Lukas Wunner [Mon, 4 Jul 2016 10:40:35 +0000 (12:40 +0200)]
apple-gmux: Sphinxify docs
Convert asciidoc-formatted docs to rst in accordance with Jonathan's and
Jani's effort to use sphinx for kernel-doc rendering in 4.8.
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Acked-by: Darren Hart <dvhart@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/4c1b29986fa77772156b1af0c965d3799e43a47b.1467628307.git.lukas@wunner.de
Dave Airlie [Wed, 27 Jul 2016 19:51:39 +0000 (05:51 +1000)]
Merge branch 'drm-next-4.8' of git://people.freedesktop.org/~agd5f/linux into drm-next
A few more patches for 4.8. Mostly bug fixes and some prep work
for iceland powerplay support. I have a couple polaris patches and
Edward's misc cleanups that require a merge with Linus'. I don't know
if you are planning a merge anytime soon.
[airlied: fixed up endian vs 32-bit change in ppatomctrl]
* 'drm-next-4.8' of git://people.freedesktop.org/~agd5f/linux: (26 commits)
drm/amdgpu: comment out unused defaults_bonaire_pro static const structures to fix the build
drm/amdgpu: temporary comment out unused static const structures to fix the build
drm/amdgpu: S3 resume fail on Polaris10
drm/amd/powerplay: add pp_tables_get_response_times function in process pptables
drm/amd/powerplay: fix the incorrect return value
drm/amd/powerplay: add atomctrl_get_voltage_evv function in ppatomctrl
drm/amdgpu: add new definitions into ppsmc.h for iceland
drm/amd/powerplay: add SMU register macro for future use
drm/amdgpu: add ucode_start_address into cgs_firmware_info
drm/amdgpu: no need load microcode at sdma if powerplay is enabled
drm/amdgpu: rename smumgr to smum for dpm
drm/amdgpu: disable GFX PG on CZ/BR/ST
drivers: gpu: drm: amd: powerplay: hwmgr: Remove unused variable
drm/amdgpu: return -ENOSPC when running out of UVD handles
drm/amdgpu: trace need_flush in grab_vm as well
drm/amdgpu: always signal all fences
drm/amdgpu: check flush fence context instead of same ring v2
drm/radeon: support backlight control for UNIPHY3
drm/amdgpu: support backlight control for UNIPHY3
drm/amdgpu: remove usec timeout loop from IB tests
...
Philipp Zabel [Fri, 22 Jul 2016 08:25:09 +0000 (10:25 +0200)]
drm/imx: imx-ldb: do not try to dereference crtc->state->state in encoder mode_set
The code in imx_ldb_encoder_mode_set crashes with a NULL pointer
dereference trying to access crtc->state->state, which was previously
cleared by drm_atomic_helper_swap_state:
Unable to handle kernel NULL pointer dereference at virtual address
00000010
pgd =
ae08c000
[
00000010] *pgd=
3e00e831, *pte=
00000000, *ppte=
00000000
Internal error: Oops: 17 [#1] PREEMPT SMP ARM
Modules linked in:
CPU: 1 PID: 102 Comm: kmsfb-manage Not tainted 4.7.0-rc5+ #232
Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree)
task:
ae058c40 ti:
ae04e000 task.ti:
ae04e000
PC is at imx_ldb_encoder_mode_set+0x138/0x2f8
LR is at 0xae881818
pc : [<
8051a8c8>] lr : [<
ae881818>] psr:
600f0013
sp :
ae04fc70 ip :
ae04fbb0 fp :
ae04fcbc
r10:
ae8ea018 r9 :
00000000 r8 :
ae246418
r7 :
ae8ea010 r6 :
ae8ea308 r5 :
00000000 r4 :
00000000
r3 :
00000000 r2 :
00000000 r1 :
00000110 r0 :
00000000
Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none
Control:
10c5387d Table:
3e08c04a DAC:
00000051
Process kmsfb-manage (pid: 102, stack limit = 0xae04e210)
Stack: (0xae04fc70 to 0xae050000)
fc60:
043ce660 00000001 0000009e 043ce660
fc80:
00000002 00000000 00000000 af75cf50 00001009 ae23f440 00000001 ae246418
fca0:
8155a210 ae8ea308 8093c364 ae2464e0 ae04fcec ae04fcc0 804ef350 8051a79c
fcc0:
00000004 00000004 ae23f440 af3f9000 ae881818 8155a210 af1af200 ae8ea020
fce0:
ae04fd1c ae04fcf0 80519124 804ef060 ae04fd34 00000000 00000000 00000000
fd00:
ae881818 ae23f440 80d4ec8c 00000000 ae04fd34 ae04fd20 804f00b4 80518fac
fd20:
ae23f440 00000000 ae04fd54 ae04fd38 804f2190 804f0074 ae23f440 af3f9000
fd40:
ae04fdd4 ae881818 ae04fd6c ae04fd58 80516390 804f20f4 ae23f440 00000000
fd60:
ae04fd8c ae04fd70 804f26f4 80516348 ae23a000 ae881818 00000001 af3f9000
fd80:
ae04fdac ae04fd90 80502c58 804f2678 ae04fe50 ae23f400 00000001 af3f9000
fda0:
ae04fe1c ae04fdb0 80507a1c 80502bf8 ae23a000 ae058c40 af1af200 ae23f400
fdc0:
ae23a000 af3f9000 ae881818 ae23a00c 80176c7c ae23a000 ae881818 af1af200
fde0:
00000000 00000000 ae23f400 00000001 ae04fe1c 00000051 ae04fe50 8155a210
fe00:
80932060 c06864a2 af3f9000 ae246200 ae04fefc ae04fe20 804f9718 805074e8
fe20:
ae04feac ae04fe30 80177360 8017631c 805074dc 00000068 00000068 00000062
fe40:
00000068 000000a2 ae04fe50 7ef29688 7ef29c40 00000000 00000001 00000018
fe60:
00000026 00000000 00000000 00000000 00000001 000115bc 05010500 05a0059f
fe80:
03200000 03360321 00000337 0000003c 00000000 00000040 30383231 30303878
fea0:
00000000 00000000 00000000 00000000 00000000 00000000 00004000 aea6a140
fec0:
00000000 80d77b71 00000000 80283110 600f0013 7ef29688 af342bb0 ae250b40
fee0:
80275440 00000003 ae04e000 00000000 ae04ff7c ae04ff00 80274ac8 804f957c
ff00:
80283128 80179030 00000000 00000000 80282fd8 ae1e0000 0000003d aea6a1d0
ff20:
00000002 00000003 00004000 007f8c60 c06864a2 7ef29688 ae04e000 00000000
ff40:
ae04ff6c ae04ff50 80283260 80282fe4 00017050 ae250b41 00000003 ae250b40
ff60:
c06864a2 7ef29688 ae04e000 00000000 ae04ffa4 ae04ff80 80275440 80274a20
ff80:
00017050 00000001 007f8c60 00000036 801088a4 ae04e000 00000000 ae04ffa8
ffa0:
80108700 80275408 00017050 00000001 00000003 c06864a2 7ef29688 000115bc
ffc0:
00017050 00000001 007f8c60 00000036 00000003 00000000 00000026 00000018
ffe0:
00016f28 7ef29684 0000b7d9 76e4a1e6 400f0030 00000003 3ff7e861 3ff7ec61
Backtrace:
[<
8051a790>] (imx_ldb_encoder_mode_set) from [<
804ef350>] (drm_atomic_helper_commit_modeset_disables+0x2fc/0x3f0)
r10:
ae2464e0 r9:
8093c364 r8:
ae8ea308 r7:
8155a210 r6:
ae246418 r5:
00000001
r4:
ae23f440
[<
804ef054>] (drm_atomic_helper_commit_modeset_disables) from [<
80519124>] (imx_drm_atomic_commit_tail+0x184/0x1e0)
r10:
ae8ea020 r9:
af1af200 r8:
8155a210 r7:
ae881818 r6:
af3f9000 r5:
ae23f440
r4:
00000004 r3:
00000004
[<
80518fa0>] (imx_drm_atomic_commit_tail) from [<
804f00b4>] (commit_tail+0x4c/0x68)
r6:
00000000 r5:
80d4ec8c r4:
ae23f440
[<
804f0068>] (commit_tail) from [<
804f2190>] (drm_atomic_helper_commit+0xa8/0xd4)
r5:
00000000 r4:
ae23f440
[<
804f20e8>] (drm_atomic_helper_commit) from [<
80516390>] (drm_atomic_commit+0x54/0x74)
r7:
ae881818 r6:
ae04fdd4 r5:
af3f9000 r4:
ae23f440
[<
8051633c>] (drm_atomic_commit) from [<
804f26f4>] (drm_atomic_helper_set_config+0x88/0xac)
r5:
00000000 r4:
ae23f440
[<
804f266c>] (drm_atomic_helper_set_config) from [<
80502c58>] (drm_mode_set_config_internal+0x6c/0xf4)
r7:
af3f9000 r6:
00000001 r5:
ae881818 r4:
ae23a000
[<
80502bec>] (drm_mode_set_config_internal) from [<
80507a1c>] (drm_mode_setcrtc+0x540/0x5b8)
r7:
af3f9000 r6:
00000001 r5:
ae23f400 r4:
ae04fe50
[<
805074dc>] (drm_mode_setcrtc) from [<
804f9718>] (drm_ioctl+0x1a8/0x46c)
r10:
ae246200 r9:
af3f9000 r8:
c06864a2 r7:
80932060 r6:
8155a210 r5:
ae04fe50
r4:
00000051
[<
804f9570>] (drm_ioctl) from [<
80274ac8>] (do_vfs_ioctl+0xb4/0x9e8)
r10:
00000000 r9:
ae04e000 r8:
00000003 r7:
80275440 r6:
ae250b40 r5:
af342bb0
r4:
7ef29688
[<
80274a14>] (do_vfs_ioctl) from [<
80275440>] (SyS_ioctl+0x44/0x6c)
r10:
00000000 r9:
ae04e000 r8:
7ef29688 r7:
c06864a2 r6:
ae250b40 r5:
00000003
r4:
ae250b41
[<
802753fc>] (SyS_ioctl) from [<
80108700>] (ret_fast_syscall+0x0/0x1c)
r9:
ae04e000 r8:
801088a4 r7:
00000036 r6:
007f8c60 r5:
00000001 r4:
00017050
Code:
1a000018 e596e034 e59e3368 e59331bc (
e5930010)
---[ end trace
464e7d3c7f4b9706 ]---
Instead of trying to walk only the connectors in atomic state to which we
don't have access, just walk all connectors to find one connected to the
current encoder and containing a bus_format description.
Fixes:
49f98bc4d44a4 ("drm/imx: store internal bus configuration in crtc state")
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Liu Ying <gnuiyl@gmail.com>
Dave Airlie [Wed, 27 Jul 2016 00:37:01 +0000 (10:37 +1000)]
Merge tag 'drm-intel-next-fixes-2016-07-25' of git://anongit.freedesktop.org/drm-intel into drm-next
Bunch of fixes for the 4.8 merge pull, nothing out of the ordinary. All
suitably marked up with cc: stable where needed.
* tag 'drm-intel-next-fixes-2016-07-25' of git://anongit.freedesktop.org/drm-intel:
drm/i915/gen9: Add WaInPlaceDecompressionHang
drm/i915/guc: Revert "drm/i915/guc: enable GuC loading & submission by default"
drm/i915/bxt: Fix inadvertent CPU snooping due to incorrect MOCS config
drm/i915/gen9: Clean up MOCS table definitions
drm/i915: Set legacy properties when using legacy gamma set IOCTL. (v2)
drm/i915: Enable polling when we don't have hpd
drm/i915/vlv: Disable HPD in valleyview_crt_detect_hotplug()
drm/i915/vlv: Reset the ADPA in vlv_display_power_well_init()
drm/i915/vlv: Make intel_crt_reset() per-encoder
drm/i915: Unbreak interrupts on pre-gen6
drm/i915/breadcrumbs: Queue hangcheck before sleeping
Dave Airlie [Wed, 27 Jul 2016 00:33:08 +0000 (10:33 +1000)]
Merge tag 'topic/drm-misc-2016-07-22' of git://anongit.freedesktop.org/drm-intel into drm-next
Suddenly everyone shows up with their trivial patch series!
- piles of if (!ptr) check removals from Markus Elfring
- more of_node_put fixes from Peter Chen
- make fbdev support really optional in all drivers (except vmwgfx),
somehow this fell through the cracks when we did all the hard prep work
a while ago. Patches from Tobias Jakobi.
- leftover patches for the connector reg/unreg cleanup (required that I
backmerged drm-next) from Chris
- last vgem fence patch from Chris
- fix up warnings in the new sphinx gpu docs build
- misc other small bits
* tag 'topic/drm-misc-2016-07-22' of git://anongit.freedesktop.org/drm-intel: (57 commits)
GPU-DRM-Exynos: Delete an unnecessary check before the function call "vunmap"
GPU-DRM-sun4i: Delete an unnecessary check before drm_fbdev_cma_hotplug_event()
drm/atomic: Delete an unnecessary check before drm_property_unreference_blob()
drm/rockchip: analogix_dp: add missing clk_disable_unprepare() on error
drm: drm_connector->s/connector_id/index/ for consistency
drm/virtio: Fix non static symbol warning
drm/arc: Remove redundant dev_err call in arcpgu_load()
drm/arc: Fix some sparse warnings
drm/vgem: Fix non static symbol warning
drm/doc: Spinx leftovers
drm/dp-mst: Missing kernel doc
drm/dp-mst: Remove tx_down_in_progress
drm/doc: Fix missing kerneldoc for drm_dp_helper.c
drm: Extract&Document drm_irq.h
drm/doc: document all the properties in drm_mode_config
drm/drm-kms.rst: Remove unused drm_fourcc.h include directive
drm/doc: Add kerneldoc for @index
drm: Unexport drm_connector_unregister_all()
drm/sun4i: Remove redundant call to drm_connector_unregister_all()
drm/ttm: Delete an unnecessary check before the function call "ttm_tt_destroy"
...
Brian Starkey [Tue, 26 Jul 2016 16:15:25 +0000 (17:15 +0100)]
drm/arm: mali-dp: Set crtc.port to the port instead of the endpoint
The CRTC's port pointer was being set to the endpoint node instead of
the port. Fix that, and hold a reference on the port node.
Signed-off-by: Brian Starkey <brian.starkey@arm.com>
Acked-by: Liviu Dudau <Liviu.Dudau@arm.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/1469549725-19577-1-git-send-email-brian.starkey@arm.com
Lee Jones [Mon, 25 Jul 2016 10:09:33 +0000 (11:09 +0100)]
drm/sti: use new Reset API
Since
0b52297f228 ("reset: Add support for shared reset controls") the
new Reset API now demands consumers choose either an *_exclusive or a
*_shared line when requesting reset lines.
This issue was found when running a kernel containing the aforementioned
patch which includes an informitive WARN(). It implies that one or
more used reset lines are in fact shared. This is why we're using the
*_shared variant.
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20160725100933.9261-1-lee.jones@linaro.org
Dave Airlie [Tue, 26 Jul 2016 07:26:29 +0000 (17:26 +1000)]
Backmerge tag 'v4.7' into drm-next
Linux 4.7
As requested by Daniel Vetter as the conflicts were getting messy.
Mika Kuoppala [Wed, 20 Jul 2016 11:26:12 +0000 (14:26 +0300)]
drm/i915/gen9: Add WaInPlaceDecompressionHang
Add this workaround to prevent hang when in place compression
is used.
References: HSD#
2135774
Cc: stable@vger.kernel.org
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Arun Siluvery <arun.siluvery@linux.intel.com>
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
(cherry picked from commit
4ba9c1f7c7b8ca8c1d77f65d408e589dc87b9a2d)
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Rodrigo Vivi [Mon, 18 Jul 2016 23:27:57 +0000 (16:27 -0700)]
drm/i915/guc: Revert "drm/i915/guc: enable GuC loading & submission by default"
This reverts commit
041824ee25cfc535ba2d9a22c217df735ea2471e.
We have latency issues that might impact the performance: #96606.
and hangs and loading issues on resume after S4: #96526.
This is also blocking a platform milestone so let's disable
this for now while we make sure we don't have any more loading
issue, or related basic hangs and it pass BAT for real in all
platofmrs.
In case BAT is wrong let's first fix BAT before re-enable it here.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=96606
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=96526
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Dave Gordon <david.s.gordon@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Christophe Prigent <christophe.prigent@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1468884477-30086-1-git-send-email-rodrigo.vivi@intel.com
(cherry picked from commit
fe993bc9582ff23c9a81414acdfed8e55478e456)
[danvet: Drop cc: stable since this is for 4.8 only.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Imre Deak [Fri, 1 Jul 2016 13:40:05 +0000 (16:40 +0300)]
drm/i915/bxt: Fix inadvertent CPU snooping due to incorrect MOCS config
Setting a write-back cache policy in the MOCS entry definition also
implies snooping, which has a considerable overhead. This is
unexpected for a few reasons:
- From user-space's point of view since it didn't want a coherent
surface (it didn't set the buffer as such via the set caching IOCTL).
- There is a separate MOCS entry field for snooping (which we never
set).
- This MOCS table is about caching in (e)LLC and there is no (e)LLC on
BXT. There is a separate table for L3 cache control.
Considering the above the current behavior of snooping looks like an
unintentional side-effect of the WB setting. Changing it to be LLC-UC
gets rid of the snooping without any ill-effects. For a coherent
surface the application would use a separate MOCS entry at index 1 and
call the set caching IOCTL to setup the PTE entries for the
corresponding buffer to be snooped. In the future we could also add a
new MOCS entry for coherent surfaces.
This resulted in 70% improvement in synthetic texturing benchmarks.
Kudos to Valtteri Rantala, Eero Tamminen and Michael T Frederick and
Ville who helped to narrow the source of problem to the kernel and to
the snooping behaviour in particular.
With a follow-up change to adjust the 3rd entry value
igt/gem_mocs_settings is passing after this change.
v2:
- Rebase on v2 of patch 1/2.
v3:
- Set the entry as LLC uncached instead of PTE-passthrough. This way
we also keep snooping disabled, but we also make the cacheability/
coherency setting indepent of the PTE which is managed by the
kernel. (Chris)
CC: Rong R Yang <rong.r.yang@intel.com>
CC: Yakui Zhao <yakui.zhao@intel.com>
CC: Valtteri Rantala <valtteri.rantala@intel.com>
CC: Eero Tamminen <eero.t.tamminen@intel.com>
CC: Michael T Frederick <michael.t.frederick@intel.com>
CC: Ville Syrjälä <ville.syrjala@linux.intel.com>
CC: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Acked-by: Zhao Yakui <yakui.zhao@intel.com>
Tested-by: Rong R Yang <rong.r.yang@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1467380406-11954-3-git-send-email-imre.deak@intel.com
(cherry picked from commit
6bee14ed1e1136d700e5290c080e1145982ce43e)
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Imre Deak [Fri, 1 Jul 2016 13:40:04 +0000 (16:40 +0300)]
drm/i915/gen9: Clean up MOCS table definitions
Use named struct initializers for clarity. Also fix the target cache
definition to reflect its role in GEN9 onwards. On GEN8 a TC value of 0
meant ELLC but on GEN9+ it means the TC and LRU controls are taken from
the PTE.
No functional change, igt/gem_mocs_settings still passing after this
change.
v2: (Chris)
- Add back the hexa literals for the entries.
Add note that igt/gem_mocs_settings still passes.
CC: Rong R Yang <rong.r.yang@intel.com>
CC: Yakui Zhao <yakui.zhao@intel.com>
CC: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Acked-by: Zhao Yakui <yakui.zhao@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1467380406-11954-2-git-send-email-imre.deak@intel.com
(cherry picked from commit
e419899b7c19ef99e340e2b1ba585d82fd28c53b)
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Linus Torvalds [Sun, 24 Jul 2016 19:23:50 +0000 (12:23 -0700)]
Linux 4.7
Linus Torvalds [Sun, 24 Jul 2016 01:00:31 +0000 (10:00 +0900)]
Merge tag 'ceph-for-4.7-rc8' of git://github.com/ceph/ceph-client
Pull ceph fix from Ilya Dryomov:
"A fix for a long-standing bug in the incremental osdmap handling code
that caused misdirected requests, tagged for stable"
The tag is signed with a brand new key - Sage is on vacation and I
didn't anticipate this"
* tag 'ceph-for-4.7-rc8' of git://github.com/ceph/ceph-client:
libceph: apply new_state before new_up_client on incrementals
Linus Torvalds [Sat, 23 Jul 2016 06:44:31 +0000 (15:44 +0900)]
Merge git://git./linux/kernel/git/davem/net
Pull networking fixes from David Miller:
1) Fix memory leak in nftables, from Liping Zhang.
2) Need to check result of vlan_insert_tag() in batman-adv otherwise we
risk NULL skb derefs, from Sven Eckelmann.
3) Check for dev_alloc_skb() failures in cfg80211, from Gregory
Greenman.
4) Handle properly when we have ppp_unregister_channel() happening in
parallel with ppp_connect_channel(), from WANG Cong.
5) Fix DCCP deadlock, from Eric Dumazet.
6) Bail out properly in UDP if sk_filter() truncates the packet to be
smaller than even the space that the protocol headers need. From
Michal Kubecek.
7) Similarly for rose, dccp, and sctp, from Willem de Bruijn.
8) Make TCP challenge ACKs less predictable, from Eric Dumazet.
9) Fix infinite loop in bgmac_dma_tx_add() from Florian Fainelli.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (65 commits)
packet: propagate sock_cmsg_send() error
net/mlx5e: Fix del vxlan port command buffer memset
packet: fix second argument of sock_tx_timestamp()
net: switchdev: change ageing_time type to clock_t
Update maintainer for EHEA driver.
net/mlx4_en: Add resilience in low memory systems
net/mlx4_en: Move filters cleanup to a proper location
sctp: load transport header after sk_filter
net/sched/sch_htb: clamp xstats tokens to fit into 32-bit int
net: cavium: liquidio: Avoid dma_unmap_single on uninitialized ndata
net: nb8800: Fix SKB leak in nb8800_receive()
et131x: Fix logical vs bitwise check in et131x_tx_timeout()
vlan: use a valid default mtu value for vlan over macsec
net: bgmac: Fix infinite loop in bgmac_dma_tx_add()
mlxsw: spectrum: Prevent invalid ingress buffer mapping
mlxsw: spectrum: Prevent overwrite of DCB capability fields
mlxsw: spectrum: Don't emit errors when PFC is disabled
mlxsw: spectrum: Indicate support for autonegotiation
mlxsw: spectrum: Force link training according to admin state
r8152: add MODULE_VERSION
...
Linus Torvalds [Sat, 23 Jul 2016 05:25:02 +0000 (14:25 +0900)]
Merge branch 'overlayfs-linus' of git://git./linux/kernel/git/mszeredi/vfs
Pull overlayfs fixes from Miklos Szeredi:
"This contains a fix for a potential crash/corruption issue and another
where the suid/sgid bits weren't cleared on write"
* 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs:
ovl: verify upper dentry in ovl_remove_and_whiteout()
ovl: Copy up underlying inode's ->i_mode to overlay inode
ovl: handle ATTR_KILL*
Linus Torvalds [Sat, 23 Jul 2016 03:54:20 +0000 (12:54 +0900)]
Merge branch 'akpm' (patches from Andrew)
Merge misc fixes from Andrew Morton:
"Five fixes"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
pps: do not crash when failed to register
tools/vm/slabinfo: fix an unintentional printf
testing/radix-tree: fix a macro expansion bug
radix-tree: fix radix_tree_iter_retry() for tagged iterators.
mm: memcontrol: fix cgroup creation failure after many small jobs
Linus Torvalds [Sat, 23 Jul 2016 03:51:52 +0000 (12:51 +0900)]
Merge tag 'drm-fixes-for-v4.7-rc8-intel-kbl' of git://people.freedesktop.org/~airlied/linux
Pull intel kabylake drm fixes from Dave Airlie:
"As mentioned Intel has gathered all the Kabylake fixes from -next,
which we've enabled in 4.7 for the first time, these are pretty much
limited in scope to only affects kabylake, which is hw that isn't
shipping yet. So I'm mostly okay with it going in now.
If we don't land this, it might be a good idea to disable kabylake
support in 4.7 before we ship"
* tag 'drm-fixes-for-v4.7-rc8-intel-kbl' of git://people.freedesktop.org/~airlied/linux: (28 commits)
drm/i915/kbl: Introduce the first official DMC for Kabylake.
drm/i915: Introduce Kabypoint PCH for Kabylake H/DT.
drm/i915/gen9: implement WaConextSwitchWithConcurrentTLBInvalidate
drm/i915/gen9: Add WaFbcHighMemBwCorruptionAvoidance
drm/i195/fbc: Add WaFbcNukeOnHostModify
drm/i915/gen9: Add WaFbcWakeMemOn
drm/i915/gen9: Add WaFbcTurnOffFbcWatermark
drm/i915/kbl: Add WaClearSlmSpaceAtContextSwitch
drm/i915/gen9: Add WaEnableChickenDCPR
drm/i915/kbl: Add WaDisableSbeCacheDispatchPortSharing
drm/i915/kbl: Add WaDisableGafsUnitClkGating
drm/i915/kbl: Add WaForGAMHang
drm/i915: Add WaInsertDummyPushConstP for bxt and kbl
drm/i915/kbl: Add WaDisableDynamicCreditSharing
drm/i915/kbl: Add WaDisableGamClockGating
drm/i915/gen9: Enable must set chicken bits in config0 reg
drm/i915/kbl: Add WaDisableLSQCROPERFforOCL
drm/i915/kbl: Add WaDisableSDEUnitClockGating
drm/i915/kbl: Add WaDisableFenceDestinationToSLM for A0
drm/i915/kbl: Add WaEnableGapsTsvCreditFix
...
Linus Torvalds [Sat, 23 Jul 2016 03:46:42 +0000 (12:46 +0900)]
Merge tag 'drm-fixes-for-v4.7-rc8-intel' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
"Two i915 regression fixes.
Intel have submitted some Kabylake fixes I'll send separately, since
this is the first kernel with kabylake support and they don't go much
outside that area I think they should be fine"
* tag 'drm-fixes-for-v4.7-rc8-intel' of git://people.freedesktop.org/~airlied/linux:
drm/i915: add missing condition for committing planes on crtc
drm/i915: Treat eDP as always connected, again
Linus Torvalds [Sat, 23 Jul 2016 03:39:08 +0000 (12:39 +0900)]
Merge tag 'm68k-for-v4.8-tag1' of git://git./linux/kernel/git/geert/linux-m68k
Pull m68k upddates from Geert Uytterhoeven:
- assorted spelling fixes
- defconfig updates
* tag 'm68k-for-v4.8-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
m68k/defconfig: Update defconfigs for v4.7-rc2
m68k: Assorted spelling fixes
Linus Torvalds [Sat, 23 Jul 2016 03:32:50 +0000 (12:32 +0900)]
Merge tag 'armsoc-fixes' of git://git./linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Olof Johansson:
"A handful of fixes before final release:
Marvell Armada:
- One to fix a typo in the devicetree specifying memory ranges for
the crypto engine
- Two to deal with marking PCI and device-memory as strongly ordered
to avoid hardware deadlocks, in particular when enabling above
crypto driver.
- Compile fix for PM
Allwinner:
- DT clock fixes to deal with u-boot-enabled framebuffer (simplefb).
- Make R8 (C.H.I.P. SoC) inherit system compatibility from A13 to
make clocks register proper.
Tegra:
- Fix SD card voltage setting on the Tegra3 Beaver dev board
Misc:
- Two maintainers updates for STM32 and STi platforms"
* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: tegra: beaver: Allow SD card voltage to be changed
MAINTAINERS: update STi maintainer list
MAINTAINERS: update STM32 maintainers list
ARM: mvebu: compile pm code conditionally
ARM: dts: sun7i: Fix pll3x2 and pll7x2 not having a parent clock
ARM: dts: sunxi: Add pll3 to simplefb nodes clocks lists
ARM: dts: armada-38x: fix MBUS_ID for crypto SRAM on Armada 385 Linksys
ARM: mvebu: map PCI I/O regions strongly ordered
ARM: mvebu: fix HW I/O coherency related deadlocks
ARM: sunxi/dt: make the CHIP inherit from allwinner,sun5i-a13
Linus Torvalds [Sat, 23 Jul 2016 03:20:55 +0000 (12:20 +0900)]
Merge branch 'linus' of git://git./linux/kernel/git/herbert/crypto-2.6
Pull crypto fixes from Herbert Xu:
"This fixes a sporadic build failure in the qat driver as well as a
memory corruption bug in rsa-pkcs1pad"
* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: rsa-pkcs1pad - fix rsa-pkcs1pad request struct
crypto: qat - make qat_asym_algs.o depend on asn1 headers
Linus Torvalds [Sat, 23 Jul 2016 03:15:48 +0000 (12:15 +0900)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jmorris/linux-security
Pull key handling fixes from James Morris:
"Quoting David Howells:
Here are three miscellaneous fixes:
(1) Fix a panic in some debugging code in PKCS#7. This can only
happen by explicitly inserting a #define DEBUG into the code.
(2) Fix the calculation of the digest length in the PE file parser.
This causes a failure where there should be a success.
(3) Fix the case where an X.509 cert can be added as an asymmetric key
to a trusted keyring with no trust restriction if no AKID is
supplied.
Bugs (1) and (2) aren't particularly problematic, but (3) allows a
security check to be bypassed. Happily, this is a recent regression
and never made it into a released kernel"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
KEYS: Fix for erroneous trust of incorrectly signed X.509 certs
pefile: Fix the failure of calculation for digest
PKCS#7: Fix panic when referring to the empty AKID when DEBUG defined
Linus Torvalds [Sat, 23 Jul 2016 03:10:48 +0000 (12:10 +0900)]
Merge branch 'for-linus' of git://git./linux/kernel/git/dtor/input
Pull input fixes from Dmitry Torokhov:
"A few more fixes for the input subsystem:
- restore naming for tsc2005 touchscreens as some userspace match on it
- fix out of bound access in legacy keyboard driver
- fixup in RMI4 driver
Everything is tagged for stable as well"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: tsc200x - report proper input_dev name
tty/vt/keyboard: fix OOB access in do_compute_shiftstate()
Input: synaptics-rmi4 - fix maximum size check for F12 control register 8
Linus Torvalds [Sat, 23 Jul 2016 03:07:37 +0000 (12:07 +0900)]
Merge branch 'libnvdimm-fixes' of git://git./linux/kernel/git/nvdimm/nvdimm
Pull libnvdimm fix from Dan Williams:
"This contains a regression fix for a problem that was introduced in
v4.7-rc6.
In 4.7-rc1 we introduced auto-probing for the ACPI DSM (device-
specific-method) format that the platform firmware implements for
nvdimm devices. We initially fixed a regression in probing the QEMU
DSM implementation by making acpi_check_dsm() tolerant of the way QEMU
reports the "0 DSMs supported" condition.
However, that broke HPE platforms since that tolerance caused the
driver to mistakenly match the 1-zero-byte response those platforms
give to "unknown" commands. Instead, we simply make the driver
tolerant of not finding any supported DSMs. This has been tested to
work with both QEMU and HPE platforms.
This commit has appeared in a -next release with no reported issues"
* 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
nfit: make DIMM DSMs optional