STALL_ARB_UMC     720 drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c 	WREG32_FIELD(UVD_LMI_CTRL2, STALL_ARB_UMC, 1);
STALL_ARB_UMC     771 drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c 	WREG32_FIELD(UVD_LMI_CTRL2, STALL_ARB_UMC, 0);