sctp: use list_move_tail instead of list_del/list_add_tail

Using list_move_tail() instead of list_del() + list_add_tail().

spatch with a semantic match is used to found this problem.
(http://coccinelle.lip6.fr/)

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 6 deletions

diff --git a/net/sctp/outqueue.c b/net/sctp/outqueue.c
index 072bf6ae3c26..d16632e1503a 100644
--- a/net/sctp/outqueue.c
+++ b/net/sctp/outqueue.c
@@ -591,9 +591,8 @@ static int sctp_outq_flush_rtx(struct sctp_outq *q, struct sctp_packet *pkt,
                  * next chunk.
                  */
                 if (chunk->tsn_gap_acked) {
-                        list_del(&chunk->transmitted_list);
-                        list_add_tail(&chunk->transmitted_list,
-                                        &transport->transmitted);
+                        list_move_tail(&chunk->transmitted_list,
+                                       &transport->transmitted);
                         continue;
                 }
 
@@ -657,9 +656,8 @@ redo:
                         /* The append was successful, so add this chunk to
                          * the transmitted list.
                          */
-                        list_del(&chunk->transmitted_list);
-                        list_add_tail(&chunk->transmitted_list,
-                                        &transport->transmitted);
+                        list_move_tail(&chunk->transmitted_list,
+                                       &transport->transmitted);
 
                         /* Mark the chunk as ineligible for fast retransmit
                          * after it is retransmitted.