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Commit 0b8794e2 authored by Jack Xiao's avatar Jack Xiao Committed by Alex Deucher
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drm/amdgpu/vcn2: don't access register when power gated 



It will cause bus hang to access register UVD_STATUS
when VCN is in the state of power gated.

Signed-off-by: default avatarJack Xiao <Jack.Xiao@amd.com>
Acked-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Reviewed-by: default avatarHuang Rui <ray.huang@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent a8179d62

drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c

+2 −1
Original line number Diff line number Diff line
@@ -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;