[Bluetooth] Disconnect L2CAP connection after last RFCOMM DLC

The RFCOMM specification says that the device closing the last DLC on
a particular session is responsible for closing the multiplexer by
closing the corresponding L2CAP channel.

Signed-off-by: Ville Tervo <ville.tervo@nokia.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

diff --git a/net/bluetooth/rfcomm/core.c b/net/bluetooth/rfcomm/core.c
index 71a72fcb2b540adb5bda9c0c7b66c18cdc1ed444..52e04df323eaa61eebb326659bf84c2db0cc52a8 100644 (file)
--- a/net/bluetooth/rfcomm/core.c
+++ b/net/bluetooth/rfcomm/core.c
@@ -1058,6 +1058,12 @@ static int rfcomm_recv_ua(struct rfcomm_session *s, u8 dlci)
                case BT_DISCONN:
                        d->state = BT_CLOSED;
                        __rfcomm_dlc_close(d, 0);
+
+                       if (list_empty(&s->dlcs)) {
+                               s->state = BT_DISCONN;
+                               rfcomm_send_disc(s, 0);
+                       }
+
                        break;
                }
        } else {
@@ -1067,6 +1073,10 @@ static int rfcomm_recv_ua(struct rfcomm_session *s, u8 dlci)
                        s->state = BT_CONNECTED;
                        rfcomm_process_connect(s);
                        break;
+
+               case BT_DISCONN:
+                       rfcomm_session_put(s);
+                       break;
                }
        }
        return 0;