On Thu, Oct 20, 2016 at 9:20 AM, Christian König
<deathsimple@xxxxxxxxxxx> wrote:
> From: Christian König <christian.koenig@xxxxxxx>
>
> Kernel functions taking a timeout usually return 1 on success even
> when they get a zero timeout.
>
> Signen-off-by: Christian König <christian.koenig@xxxxxxx>
> Reviewed-by: Chunming Zhou <david1.zhou@xxxxxxx>
Adding Sumit. This series is:
Reviewed-by: Alex Deucher <alexander.deucher@xxxxxxx>
> ---
> drivers/dma-buf/fence.c | 8 +++++---
> 1 file changed, 5 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/dma-buf/fence.c b/drivers/dma-buf/fence.c
> index 4d51f9e..fb915ab 100644
> --- a/drivers/dma-buf/fence.c
> +++ b/drivers/dma-buf/fence.c
> @@ -335,18 +335,20 @@ fence_default_wait_cb(struct fence *fence, struct fence_cb *cb)
> * @timeout: [in] timeout value in jiffies, or MAX_SCHEDULE_TIMEOUT
> *
> * Returns -ERESTARTSYS if interrupted, 0 if the wait timed out, or the
> - * remaining timeout in jiffies on success.
> + * remaining timeout in jiffies on success. If timeout is zero the value one is
> + * returned if the fence is already signaled for consistency with other
> + * functions taking a jiffies timeout.
> */
> signed long
> fence_default_wait(struct fence *fence, bool intr, signed long timeout)
> {
> struct default_wait_cb cb;
> unsigned long flags;
> - signed long ret = timeout;
> + signed long ret = timeout ? timeout : 1;
> bool was_set;
>
> if (test_bit(FENCE_FLAG_SIGNALED_BIT, &fence->flags))
> - return timeout;
> + return ret;
>
> spin_lock_irqsave(fence->lock, flags);
>
> --
> 2.5.0
>
> _______________________________________________
> dri-devel mailing list
> dri-devel@xxxxxxxxxxxxxxxxxxxxx
> https://lists.freedesktop.org/mailman/listinfo/dri-devel
_______________________________________________
dri-devel mailing list
dri-devel@xxxxxxxxxxxxxxxxxxxxx
https://lists.freedesktop.org/mailman/listinfo/dri-devel
