Bluetooth: Remove *_bh locks from SCO

Those locks are not shared between interrupt and process context anymore,
so remove the part that disable interrupts. We are still safe because
preemption is disabled.
Acked-by: NMarcel Holtmann <marcel@holtmann.org>
Signed-off-by: NGustavo F. Padovan <padovan@profusion.mobi>

net/bluetooth/sco.c

@@ -482,7 +482,7 @@ static int sco_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_le
 		goto done;
 	}
 
-	write_lock_bh(&sco_sk_list.lock);
+	write_lock(&sco_sk_list.lock);
 
 	if (bacmp(src, BDADDR_ANY) && __sco_get_sock_by_addr(src)) {
 		err = -EADDRINUSE;
@@ -492,7 +492,7 @@ static int sco_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_le
 		sk->sk_state = BT_BOUND;
 	}
 
-	write_unlock_bh(&sco_sk_list.lock);
+	write_unlock(&sco_sk_list.lock);
 
 done:
 	release_sock(sk);
@@ -965,14 +965,14 @@ static int sco_debugfs_show(struct seq_file *f, void *p)
 	struct sock *sk;
 	struct hlist_node *node;
 
-	read_lock_bh(&sco_sk_list.lock);
+	read_lock(&sco_sk_list.lock);
 
 	sk_for_each(sk, node, &sco_sk_list.head) {
 		seq_printf(f, "%s %s %d\n", batostr(&bt_sk(sk)->src),
 				batostr(&bt_sk(sk)->dst), sk->sk_state);
 	}
 
-	read_unlock_bh(&sco_sk_list.lock);
+	read_unlock(&sco_sk_list.lock);
 
 	return 0;
 }