diff options
Diffstat (limited to 'net/x25/af_x25.c')
| -rw-r--r-- | net/x25/af_x25.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/net/x25/af_x25.c b/net/x25/af_x25.c index 77d8adb27ec7..9d0328bb30ca 100644 --- a/net/x25/af_x25.c +++ b/net/x25/af_x25.c @@ -497,6 +497,12 @@ static int x25_listen(struct socket *sock, int backlog) int rc = -EOPNOTSUPP; lock_sock(sk); + if (sock->state != SS_UNCONNECTED) { + rc = -EINVAL; + release_sock(sk); + return rc; + } + if (sk->sk_state != TCP_LISTEN) { memset(&x25_sk(sk)->dest_addr, 0, X25_ADDR_LEN); sk->sk_max_ack_backlog = backlog; |