amdgpu_sync_peek_fence
fences[i] = amdgpu_sync_peek_fence(&(*idle)->active, ring);
tmp = amdgpu_sync_peek_fence(&(*id)->active, ring);
BUG_ON(amdgpu_sync_peek_fence(&job->sync, NULL));
struct dma_fence *amdgpu_sync_peek_fence(struct amdgpu_sync *sync,