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drm/amdgpu/vcn2.0: add cancel_delayed_work_sync before power gate

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commit 0c6013377b4027e69d8f3e63b6bf556b6cb87802 upstream.

Add cancel_delayed_work_sync before set power gating state
to avoid race condition issue when power gating.

Signed-off-by: James Zhu <James.Zhu@amd.com>
Reviewed-by: Leo Liu <leo.liu@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
James Zhu 2021-05-19 11:26:32 -04:00 • committed by Greg Kroah-Hartman
commit f0780e96a6
1 changed files with 2 additions and 0 deletions
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2
drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c
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@ -293,6 +293,8 @@ static int vcn_v2_0_hw_fini(void *handle)
struct amdgpu_ring *ring = &adev->vcn.inst->ring_dec;
int i;
cancel_delayed_work_sync(&adev->vcn.idle_work);
if ((adev->pg_flags & AMD_PG_SUPPORT_VCN_DPG) ||
(adev->vcn.cur_state != AMD_PG_STATE_GATE &&
RREG32_SOC15(VCN, 0, mmUVD_STATUS)))