Fix L2CAP client/server PSM clash.

include/net/bluetooth/l2cap.h

@@ -224,6 +224,8 @@ struct l2cap_pinfo {
 
 	__u8		ident;
 
+	__u16		sport;
+
 	struct l2cap_conn 	*conn;
 	struct sock 		*next_c;
 	struct sock 		*prev_c;

net/bluetooth/l2cap.c

@@ -191,8 +191,7 @@ static struct sock *__l2cap_get_sock_by_addr(u16 psm, bdaddr_t *src)
 {
 	struct sock *sk;
 	for (sk = l2cap_sk_list.head; sk; sk = sk->next) {
-		if (l2cap_pi(sk)->psm == psm &&
-				!bacmp(&bt_sk(sk)->src, src))
+		if (l2cap_pi(sk)->sport == psm && !bacmp(&bt_sk(sk)->src, src))
 			break;
 	}
 	return sk;
@@ -417,6 +416,7 @@ static int l2cap_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_
 		/* Save source address */
 		bacpy(&bt_sk(sk)->src, &la->l2_bdaddr);
 		l2cap_pi(sk)->psm   = la->l2_psm;
+		l2cap_pi(sk)->sport = la->l2_psm;
 		sk->state = BT_BOUND;
 	}
 	write_unlock_bh(&l2cap_sk_list.lock);