1 files changed, 3 insertions, 0 deletions

diff --git a/include/linux/async_tx.h b/include/linux/async_tx.h
index 866e61c4e2e0..a1c486a88e88 100644
--- a/include/linux/async_tx.h
+++ b/include/linux/async_tx.h
@@ -58,11 +58,14 @@ struct dma_chan_ref {
  * array.
  * @ASYNC_TX_ACK: immediately ack the descriptor, precludes setting up a
  * dependency chain
+ * @ASYNC_TX_FENCE: specify that the next operation in the dependency
+ * chain uses this operation's result as an input
  */
 enum async_tx_flags {
         ASYNC_TX_XOR_ZERO_DST    = (1 << 0),
         ASYNC_TX_XOR_DROP_DST    = (1 << 1),
         ASYNC_TX_ACK             = (1 << 2),
+        ASYNC_TX_FENCE           = (1 << 3),
 };
 
 /**