[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>

1 files changed, 10 insertions, 0 deletions

diff --git a/net/bluetooth/rfcomm/core.c b/net/bluetooth/rfcomm/core.c
index 71a72fcb2b54..52e04df323ea 100644
--- 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;