async_tx: kill ASYNC_TX_DEP_ACK flag

[firefly-linux-kernel-4.4.55.git] / Documentation / crypto / async-tx-api.txt

diff --git a/Documentation/crypto/async-tx-api.txt b/Documentation/crypto/async-tx-api.txt
index 4af12180d1910c8e1363fcd917bc4416053b3238..76feda8541dc3ef92b4e00db195a61a72348df88 100644 (file)
--- a/Documentation/crypto/async-tx-api.txt
+++ b/Documentation/crypto/async-tx-api.txt
@@ -80,8 +80,8 @@ acknowledged by the application before the offload engine driver is allowed to
 recycle (or free) the descriptor.  A descriptor can be acked by one of the
 following methods:
 1/ setting the ASYNC_TX_ACK flag if no child operations are to be submitted
-2/ setting the ASYNC_TX_DEP_ACK flag to acknowledge the parent
-   descriptor of a new operation.
+2/ submitting an unacknowledged descriptor as a dependency to another
+   async_tx call will implicitly set the acknowledged state.
 3/ calling async_tx_ack() on the descriptor.
 
 3.4 When does the operation execute?
@@ -136,10 +136,9 @@ int run_xor_copy_xor(struct page **xor_srcs,
 
        tx = async_xor(xor_dest, xor_srcs, 0, xor_src_cnt, xor_len,
                       ASYNC_TX_XOR_DROP_DST, NULL, NULL, NULL);
-       tx = async_memcpy(copy_dest, copy_src, 0, 0, copy_len,
-                         ASYNC_TX_DEP_ACK, tx, NULL, NULL);
+       tx = async_memcpy(copy_dest, copy_src, 0, 0, copy_len, tx, NULL, NULL);
        tx = async_xor(xor_dest, xor_srcs, 0, xor_src_cnt, xor_len,
-                      ASYNC_TX_XOR_DROP_DST | ASYNC_TX_DEP_ACK | ASYNC_TX_ACK,
+                      ASYNC_TX_XOR_DROP_DST | ASYNC_TX_ACK,
                       tx, complete_xor_copy_xor, NULL);
 
        async_tx_issue_pending_all();