Ensure progress for dma_fence_array

[Chia-I Wu]

On Fri, Nov 8, 2024 at 1:43 AM Christian König
<ckoenig.leichtzumerken at gmail.com> wrote:
>
> Hi guys,
>
> as pointed out by Chia-I userspace doesn't see any progress when
> signaling is not enabled and Boris noted that this is because
> dma_fence_array_signaled() never returns true in this case.
>
> Improve this by fixing the dma_fence_array_signaled() implementation to
> also return true even if signaling was never explicitely enabled.
Yeah, this fixes the timeout I was seeing on panvk.

> We should probably adjust the documentation as well that when the
> callback is implemented it should make progess visible even without
> enabling signaling.
That would be really nice.  Both dma_fence_is_signaled and
dma_fence_ops::signaled explicitly state otherwise at the moment.



>
> Please test and review,
> Christian.
>
>