diff options
| author | Monk Liu <Monk.Liu@amd.com> | 2017-05-01 11:15:31 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2017-05-06 01:12:42 +0300 |
| commit | 236763d340d6190c56554caee61c2bd5cfdf5217 (patch) | |
| tree | 3556de5494f017c3da48af7afc55bf730920a9bf /drivers/gpu/drm | |
| parent | 1d1a2cd58f05da1167c04394292aef9fbcf29bff (diff) | |
| download | linux-236763d340d6190c56554caee61c2bd5cfdf5217.tar.xz | |
drm/amdgpu:fix waiting on dirty fence
if bo->shadow is NULL (race issue:BO shadow was just released
and gpu-reset kick in but BO hasn't yet) recover_vram_from_shadow
won't set @next, so the following "fence=next"
will wrongly use a fence pointer which may already dirty.
fixing it by set next to NULL prior to recover_vram_from_shadow
Signed-off-by: Monk Liu <Monk.Liu@amd.com>
Reviewed-by: Chunming Zhou<david1.zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index 3c1754df4c40..367811cd0763 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -2522,6 +2522,7 @@ int amdgpu_sriov_gpu_reset(struct amdgpu_device *adev, bool voluntary) ring = adev->mman.buffer_funcs_ring; mutex_lock(&adev->shadow_list_lock); list_for_each_entry_safe(bo, tmp, &adev->shadow_list, shadow_list) { + next = NULL; amdgpu_recover_vram_from_shadow(adev, ring, bo, &next); if (fence) { r = dma_fence_wait(fence, false); @@ -2668,6 +2669,7 @@ retry: DRM_INFO("recover vram bo from shadow\n"); mutex_lock(&adev->shadow_list_lock); list_for_each_entry_safe(bo, tmp, &adev->shadow_list, shadow_list) { + next = NULL; amdgpu_recover_vram_from_shadow(adev, ring, bo, &next); if (fence) { r = dma_fence_wait(fence, false); |