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 <[email protected]>
Fixes: b96fb1e ("dma-buf: dma_fence_wait must enable signaling")
Acked-by: Alex Deucher <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]

Author: ChristianKoenigAMD

drivers/dma-buf/dma-fence.c

@@ -763,11 +763,11 @@ dma_fence_default_wait(struct dma_fence *fence, bool intr, signed long timeout)
 	unsigned long flags;
 	signed long ret = timeout ? timeout : 1;
 
-	if (test_bit(DMA_FENCE_FLAG_SIGNALED_BIT, &fence->flags))
-		return ret;
-
 	spin_lock_irqsave(fence->lock, flags);
 
+	if (test_bit(DMA_FENCE_FLAG_SIGNALED_BIT, &fence->flags))
+		goto out;
+
 	if (intr && signal_pending(current)) {
 		ret = -ERESTARTSYS;
 		goto out;