From: Jack Xiao <Jack.Xiao@xxxxxxx> It will cause bus hang to access register UVD_STATUS when VCN is in the state of power gated. Signed-off-by: Jack Xiao <Jack.Xiao@xxxxxxx> Acked-by: Alex Deucher <alexander.deucher@xxxxxxx> Reviewed-by: Huang Rui <ray.huang@xxxxxxx> Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx> --- drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c b/drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c index 7609e63e59bc..d1e90209d088 100644 --- a/drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c +++ b/drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c @@ -277,7 +277,8 @@ static int vcn_v2_0_hw_fini(void *handle) struct amdgpu_ring *ring = &adev->vcn.ring_dec; int i; - if (RREG32_SOC15(VCN, 0, mmUVD_STATUS)) + if (adev->vcn.cur_state != AMD_PG_STATE_GATE && + RREG32_SOC15(VCN, 0, mmUVD_STATUS)) vcn_v2_0_set_powergating_state(adev, AMD_PG_STATE_GATE); ring->sched.ready = false; -- 2.20.1 _______________________________________________ amd-gfx mailing list amd-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/amd-gfx
