sctp: use list_is_singular in sctp_list_single_entry

Use list_is_singular() instead of open-coding.

Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/include/net/sctp/sctp.h b/include/net/sctp/sctp.h
index f8bcb75..e3bd198 100644 (file)
--- a/include/net/sctp/sctp.h
+++ b/include/net/sctp/sctp.h
@@ -412,7 +412,7 @@ static inline void sctp_skb_set_owner_r(struct sk_buff *skb, struct sock *sk)
 /* Tests if the list has one and only one entry. */
 static inline int sctp_list_single_entry(struct list_head *head)
 {
-       return (head->next != head) && (head->next == head->prev);
+       return list_is_singular(head);
 }
 
 static inline bool sctp_chunk_pending(const struct sctp_chunk *chunk)