1 files changed, 5 insertions, 0 deletions

diff --git a/crypto/async_tx/async_pq.c b/crypto/async_tx/async_pq.c
index 108b21efb499..a25e290c39fb 100644
--- a/crypto/async_tx/async_pq.c
+++ b/crypto/async_tx/async_pq.c
@@ -101,6 +101,7 @@ do_async_gen_syndrome(struct dma_chan *chan, struct page **blocks,
                  */
                 if (src_cnt > pq_src_cnt) {
                         submit->flags &= ~ASYNC_TX_ACK;
+                        submit->flags |= ASYNC_TX_FENCE;
                         dma_flags |= DMA_COMPL_SKIP_DEST_UNMAP;
                         submit->cb_fn = NULL;
                         submit->cb_param = NULL;
@@ -111,6 +112,8 @@ do_async_gen_syndrome(struct dma_chan *chan, struct page **blocks,
                         if (cb_fn_orig)
                                 dma_flags |= DMA_PREP_INTERRUPT;
                 }
+                if (submit->flags & ASYNC_TX_FENCE)
+                        dma_flags |= DMA_PREP_FENCE;
 
                 /* Since we have clobbered the src_list we are committed
                  * to doing this asynchronously.  Drivers force forward
@@ -282,6 +285,8 @@ async_syndrome_val(struct page **blocks, unsigned int offset, int disks,
                         dma_flags |= DMA_PREP_PQ_DISABLE_P;
                 if (!Q(blocks, disks))
                         dma_flags |= DMA_PREP_PQ_DISABLE_Q;
+                if (submit->flags & ASYNC_TX_FENCE)
+                        dma_flags |= DMA_PREP_FENCE;
                 for (i = 0; i < disks; i++)
                         if (likely(blocks[i])) {
                                 BUG_ON(is_raid6_zero_block(blocks[i]));