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drm/amdgpu: fix lost sync_to if scheduler is enabled. 

when scheduler is enabled, the semaphore isn't used at all.

Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Cc: stable@vger.kernel.org
This commit is contained in:
Chunming Zhou 2016-01-13 12:55:18 +08:00 committed by Alex Deucher
parent f3b5cb3e68
commit 888c9e33e4
1 changed files with 3 additions and 2 deletions
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5
drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c
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@ -293,7 +293,8 @@ int amdgpu_sync_rings(struct amdgpu_sync *sync,
fence = to_amdgpu_fence(sync->sync_to[i]);
/* check if we really need to sync */
if (!amdgpu_fence_need_sync(fence, ring))
if (!amdgpu_enable_scheduler &&
!amdgpu_fence_need_sync(fence, ring))
continue;
/* prevent GPU deadlocks */
@ -303,7 +304,7 @@ int amdgpu_sync_rings(struct amdgpu_sync *sync,
}
if (amdgpu_enable_scheduler || !amdgpu_enable_semaphores) {
r = fence_wait(&fence->base, true);
r = fence_wait(sync->sync_to[i], true);
if (r)
return r;
continue;