drm/amdgpu: fix ring0 failed on pro card
authorChunming Zhou <David1.Zhou@amd.com>
Fri, 5 May 2017 02:33:33 +0000 (10:33 +0800)
committerAlex Deucher <alexander.deucher@amd.com>
Wed, 24 May 2017 21:40:32 +0000 (17:40 -0400)
commitfcf0649fcc71d1d6a8d45d7cba21b6a0ad6489b7
treeff34e48db1fc9ca694aedf1c87a7b35631542ee4
parent738f64ccc237f80b7673a6cc43051916eb90dc27
drm/amdgpu: fix ring0 failed on pro card

the root cause is vram content is lost completely after pci reset.

Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Roger.He <Hongbo.He@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c