Bluetooth: fix shutdown on SCO sockets

shutdown should wait for SCO link to be properly disconnected before
detroying the socket, otherwise an application using the socket may
assume link is properly disconnected before it really happens which
can be a problem when e.g synchronizing profile switch.

Signed-off-by: Luiz Augusto von Dentz <luiz.dentz-von@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>

diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c
index 42fdffd1d76c0c17c5ab3382b94ea5bf4fcc62c9..cb4fb7837e5c381736b257cf77917ac6992df3b7 100644 (file)
--- a/net/bluetooth/sco.c
+++ b/net/bluetooth/sco.c
@@ -369,6 +369,15 @@ static void __sco_sock_close(struct sock *sk)
 
        case BT_CONNECTED:
        case BT_CONFIG:
+               if (sco_pi(sk)->conn) {
+                       sk->sk_state = BT_DISCONN;
+                       sco_sock_set_timer(sk, SCO_DISCONN_TIMEOUT);
+                       hci_conn_put(sco_pi(sk)->conn->hcon);
+                       sco_pi(sk)->conn->hcon = NULL;
+               } else
+                       sco_chan_del(sk, ECONNRESET);
+               break;
+
        case BT_CONNECT:
        case BT_DISCONN:
                sco_chan_del(sk, ECONNRESET);
@@ -819,7 +828,9 @@ static void sco_chan_del(struct sock *sk, int err)
                conn->sk = NULL;
                sco_pi(sk)->conn = NULL;
                sco_conn_unlock(conn);
-               hci_conn_put(conn->hcon);
+
+               if (conn->hcon)
+                       hci_conn_put(conn->hcon);
        }
 
        sk->sk_state = BT_CLOSED;