From 3cabbfdad3150e0083a64c951701c970ef970c77 Mon Sep 17 00:00:00 2001 From: Andrei Emeltchenko Date: Thu, 31 May 2012 11:01:37 +0300 Subject: [PATCH] Bluetooth: A2MP: Do not reference hci_conn Make A2MP channel special channel which do not reference hci_conn. This prevents from keeping ACL connection open when all L2CAP channels got closed. hci_conn_hold and hci_conn_put are not reference counts on the hci_conn structure in the typical way. They are reference counts for the ACL. When you do the last hci_conn_put, the ACL is disconnected after a timeout. Reported-by: Mat Martineau Signed-off-by: Andrei Emeltchenko Signed-off-by: Gustavo Padovan --- net/bluetooth/a2mp.c | 2 -- net/bluetooth/l2cap_core.c | 4 +++- 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/net/bluetooth/a2mp.c b/net/bluetooth/a2mp.c index e08ca2ac31aa..0772c680abe6 100644 --- a/net/bluetooth/a2mp.c +++ b/net/bluetooth/a2mp.c @@ -481,8 +481,6 @@ static struct l2cap_chan *a2mp_chan_open(struct l2cap_conn *conn) BT_DBG("chan %p", chan); - hci_conn_hold(conn->hcon); - chan->chan_type = L2CAP_CHAN_CONN_FIX_A2MP; chan->flush_to = L2CAP_DEFAULT_FLUSH_TO; diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c index 953ac53ae438..bef5266563a6 100644 --- a/net/bluetooth/l2cap_core.c +++ b/net/bluetooth/l2cap_core.c @@ -514,7 +514,9 @@ void l2cap_chan_del(struct l2cap_chan *chan, int err) l2cap_chan_put(chan); chan->conn = NULL; - hci_conn_put(conn->hcon); + + if (chan->chan_type != L2CAP_CHAN_CONN_FIX_A2MP) + hci_conn_put(conn->hcon); } if (chan->ops->teardown) -- 2.20.1