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| author |   Jammy Zhou <Jammy.Zhou@amd.com> | 2015-01-21 18:35:48 +0800 |
|---|---|---|
| committer |   Sumit Semwal <sumit.semwal@linaro.org> | 2015-01-22 11:28:51 +0530 |
| commit | 847b19a39e4c9b5e74c40f0842c48b41664cb43c (patch) | |
| tree | 021c2489569f3a29f06300b86bc2d78d99af24c2 /drivers/dma-buf | |
| parent | reservation: wait only with non-zero timeout specified (v3) (diff) | |
| download | linux-dev-847b19a39e4c9b5e74c40f0842c48b41664cb43c.tar.xz linux-dev-847b19a39e4c9b5e74c40f0842c48b41664cb43c.zip | |
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>
Diffstat (limited to 'drivers/dma-buf')
| -rw-r--r-- | drivers/dma-buf/fence.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/dma-buf/fence.c b/drivers/dma-buf/fence.c index e5541117b3e9..50ef8bd8708b 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); |