Commit 847b19a3 authored Jan 21, 2015 by Jammy Zhou Committed by Sumit Semwal Jan 22, 2015

dma-buf/fence: don't wait when specified timeout is zero



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@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-By: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>

parent fb8b7d2b

drivers/dma-buf/fence.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -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);