This reverts commit 847b19a39e4c9b5e74c40f0842c48b41664cb43c.
When we don't call the wait function software signaling might never be
activated. This can cause infinite polling loops with unreliable interrupt
driven hardware.
v2: rebase on drm-next
Reviewed-by: Alex Deucher <alexander.deucher at amd.com>
Signed-off-by: Christian König <christian.koenig at amd.com>
Reviewed-by: Chunming Zhou <david1.zhou at amd.com>
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
drivers/dma-buf/dma-fence.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/drivers/dma-buf/dma-fence.c b/drivers/dma-buf/dma-fence.c
index 6c3f6b4..dd00990 100644
--- a/drivers/dma-buf/dma-fence.c
+++ b/drivers/dma-buf/dma-fence.c
@@ -161,9 +161,6 @@ dma_fence_wait_timeout(struct dma_fence *fence, bool intr,
signed long timeout)
if (WARN_ON(timeout < 0))
return -EINVAL;
- if (timeout == 0)
- return dma_fence_is_signaled(fence);
-
trace_dma_fence_wait_start(fence);
ret = fence->ops->wait(fence, intr, timeout);
trace_dma_fence_wait_end(fence);
--
2.5.5
