If either the previous fence or the newly chained on is an user fence the dma_fence chain node is considered an user fence as well.
This way the user fence status propagates through the chain.
Signed-off-by: Christian König christian.koenig@amd.com --- drivers/dma-buf/dma-fence-chain.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/dma-buf/dma-fence-chain.c b/drivers/dma-buf/dma-fence-chain.c index 06f8ef97c6e8..421241607ac2 100644 --- a/drivers/dma-buf/dma-fence-chain.c +++ b/drivers/dma-buf/dma-fence-chain.c @@ -253,6 +253,10 @@ void dma_fence_chain_init(struct dma_fence_chain *chain, dma_fence_init(&chain->base, &dma_fence_chain_ops, &chain->lock, context, seqno);
+ if ((prev && test_bit(DMA_FENCE_FLAG_USER, &prev->flags)) || + test_bit(DMA_FENCE_FLAG_USER, &fence->flags)) + set_bit(DMA_FENCE_FLAG_USER, &chain->base.flags); + /* * Chaining dma_fence_chain container together is only allowed through * the prev fence and not through the contained fence.