drm/amdgpu: block ring buffer access during GPU recovery

Browse source

When GPU is in reset, its status isn't stable and ring buffer also need
be reset when resuming. Therefore driver should protect GPU recovery
thread from ring buffer accessed by other threads. Otherwise GPU will
randomly hang during recovery.

v2: correct indent

Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Dennis Li <Dennis.Li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Dennis Li 2020-09-01 09:03:53 +08:00 • committed by Alex Deucher

parent f6eb433954

commit 81202807ae

3 changed files with 23 additions and 10 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

17

drivers/gpu/drm/amd/amdgpu/amdgpu_device.c

View file

5

drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c

View file

11

drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c

View file