When specified timeout is zero for fence_wait_timeout, just check if the fence
is signaled or not without wait.
Signed-off-by: Jammy Zhou <Jammy.Zhou at amd.com>
---
drivers/dma-buf/fence.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/dma-buf/fence.c b/drivers/dma-buf/fence.c
index e554111..50ef8bd 100644
--- a/drivers/dma-buf/fence.c
+++ b/drivers/dma-buf/fence.c
@@ -159,6 +159,9 @@ fence_wait_timeout(struct fence *fence, bool intr, signed
long timeout)
if (WARN_ON(timeout < 0))
return -EINVAL;
+ if (timeout == 0)
+ return fence_is_signaled(fence);
+
trace_fence_wait_start(fence);
ret = fence->ops->wait(fence, intr, timeout);
trace_fence_wait_end(fence);
--
1.9.1
