Bluetooth: Don't check source address in SCO bind function

Checking the source address in SCO bind function will prevent from
having an incoming and outgoing SCO socket. However that might be
needed in case of multiple SCO connections on a single device.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>

net/bluetooth/sco.c

@@ -462,7 +462,6 @@ static int sco_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_le
 {
 	struct sockaddr_sco *sa = (struct sockaddr_sco *) addr;
 	struct sock *sk = sock->sk;
-	bdaddr_t *src = &sa->sco_bdaddr;
 	int err = 0;
 
 	BT_DBG("sk %p %s", sk, batostr(&sa->sco_bdaddr));
@@ -477,17 +476,14 @@ static int sco_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_le
 		goto done;
 	}
 
-	write_lock(&sco_sk_list.lock);
+	if (sk->sk_type != SOCK_SEQPACKET) {
+		err = -EINVAL;
+		goto done;
+	}
 
-	if (bacmp(src, BDADDR_ANY) && __sco_get_sock_by_addr(src)) {
-		err = -EADDRINUSE;
-	} else {
-		/* Save source address */
 	bacpy(&bt_sk(sk)->src, &sa->sco_bdaddr);
-		sk->sk_state = BT_BOUND;
-	}
 
-	write_unlock(&sco_sk_list.lock);
+	sk->sk_state = BT_BOUND;
 
 done:
 	release_sock(sk);