drm/amdgpu: clear SA bo when created
authorMonk Liu <Monk.Liu@amd.com>
Wed, 25 May 2016 08:55:07 +0000 (16:55 +0800)
committerAlex Deucher <alexander.deucher@amd.com>
Thu, 9 Jun 2016 14:48:57 +0000 (10:48 -0400)
This help fix reloading driver hang issue of SDMA
ring

Signed-off-by: Monk Liu <Monk.Liu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drivers/gpu/drm/amd/amdgpu/amdgpu_sa.c

index 8bf84efafb049cd693e156a8dbf2dff396c70164..48618ee324ebb54ae3b9eab09c8f179164741128 100644 (file)
@@ -115,6 +115,7 @@ int amdgpu_sa_bo_manager_start(struct amdgpu_device *adev,
                return r;
        }
        r = amdgpu_bo_kmap(sa_manager->bo, &sa_manager->cpu_ptr);
+       memset(sa_manager->cpu_ptr, 0, sa_manager->size);
        amdgpu_bo_unreserve(sa_manager->bo);
        return r;
 }