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dma-fence: Make ->wait callback optional

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Almost everyone uses dma_fence_default_wait.

v2: Also remove the BUG_ON(!ops->wait) (Chris).

Reviewed-by: Christian König <christian.koenig@amd.com> (v1)
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Gustavo Padovan <gustavo@padovan.org>
Cc: linux-media@vger.kernel.org
Cc: linaro-mm-sig@lists.linaro.org
Link: https://patchwork.freedesktop.org/patch/msgid/20180503142603.28513-5-daniel.vetter@ffwll.ch
This commit is contained in:
Daniel Vetter
2018-05-03 16:25:52 +02:00
parent 070473bcf7
commit 418cc6ca06
4 changed files with 13 additions and 10 deletions
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8
drivers/dma-buf/dma-fence.c
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@@ -158,7 +158,10 @@ dma_fence_wait_timeout(struct dma_fence *fence, bool intr, signed long timeout)
return -EINVAL;
trace_dma_fence_wait_start(fence);
ret = fence->ops->wait(fence, intr, timeout);
if (fence->ops->wait)
ret = fence->ops->wait(fence, intr, timeout);
else
ret = dma_fence_default_wait(fence, intr, timeout);
trace_dma_fence_wait_end(fence);
return ret;
}
@@ -556,8 +559,7 @@ dma_fence_init(struct dma_fence *fence, const struct dma_fence_ops *ops,
spinlock_t *lock, u64 context, unsigned seqno)
{
BUG_ON(!lock);
BUG_ON(!ops || !ops->wait ||
!ops->get_driver_name || !ops->get_timeline_name);
BUG_ON(!ops || !ops->get_driver_name || !ops->get_timeline_name);
kref_init(&fence->refcount);
fence->ops = ops;