drm/amdgpu/vcn: fix race condition issue for vcn start

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Fix race condition issue when multiple vcn starts are called.

v2: Removed checking the return value of cancel_delayed_work_sync()
to prevent possible races here.

v3: Add total_submission_cnt to avoid gate power unexpectedly.

v4: Remove extra counter check, and reduce counter before idle
work schedule

Signed-off-by: James Zhu <James.Zhu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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This commit is contained in:

James Zhu 2020-02-10 12:41:41 -05:00 • committed by Alex Deucher

parent 17e137f27c

commit bd718638b8

2 changed files with 16 additions and 7 deletions

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21

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

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2

drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.h

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