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@xxxxxxx> --- 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 _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
