Commit 0f1bbcc2 authored by Lang Yu's avatar Lang Yu Committed by Alex Deucher
Browse files

drm/amdgpu/umsch: reinitialize write pointer in hw init 



Otherwise the old one will be used during GPU reset.
That's not expected.

Signed-off-by: default avatarLang Yu <Lang.Yu@amd.com>
Reviewed-by: default avatarFeifei Xu <Feifei.Xu@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
parent 4b18a91f

drivers/gpu/drm/amd/amdgpu/umsch_mm_v4_0.c

+2 −0
Original line number Diff line number Diff line
@@ -225,6 +225,8 @@ static int umsch_mm_v4_0_ring_start(struct amdgpu_umsch_mm *umsch) 


	WREG32_SOC15(VCN, 0, regVCN_UMSCH_RB_SIZE, ring->ring_size);



	ring->wptr = 0;



	data = RREG32_SOC15(VCN, 0, regVCN_RB_ENABLE);

	data &= ~(VCN_RB_ENABLE__AUDIO_RB_EN_MASK);

	WREG32_SOC15(VCN, 0, regVCN_RB_ENABLE, data);