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dma-buf: fix dma_fence_default_wait() signaling check 

That check must now come after grabing the spinlock, not before.

Signed-off-by: Christian König <christian.koenig@amd.com>
Fixes: b96fb1e724 ("dma-buf: dma_fence_wait must enable signaling")
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220919120618.113332-1-christian.koenig@amd.com
This commit is contained in:
Christian König 2022-09-19 14:00:33 +02:00
parent ed712d30a9
commit 3cc3dd73c4
1 changed files with 3 additions and 3 deletions
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6
drivers/dma-buf/dma-fence.c
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@ -763,11 +763,11 @@ dma_fence_default_wait(struct dma_fence *fence, bool intr, signed long timeout)
unsigned long flags; unsigned long flags;
signed long ret = timeout ? timeout : 1; signed long ret = timeout ? timeout : 1;
if (test_bit(DMA_FENCE_FLAG_SIGNALED_BIT, &fence->flags))
return ret;
spin_lock_irqsave(fence->lock, flags); spin_lock_irqsave(fence->lock, flags);
if (test_bit(DMA_FENCE_FLAG_SIGNALED_BIT, &fence->flags))
goto out;
if (intr && signal_pending(current)) { if (intr && signal_pending(current)) {
ret = -ERESTARTSYS; ret = -ERESTARTSYS;
goto out; goto out;