linux-kernel - [PATCH 3.16 106/148] Bluetooth: delete a stray unlock

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Date:   Sat, 08 Feb 2020 18:20:45 +0000
From:   Ben Hutchings <ben@...adent.org.uk>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:     akpm@...ux-foundation.org, Denis Kirjanov <kda@...ux-powerpc.org>,
        "Dan Carpenter" <dan.carpenter@...cle.com>,
        "Marcel Holtmann" <marcel@...tmann.org>
Subject: [PATCH 3.16 106/148] Bluetooth: delete a stray unlock

3.16.82-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Dan Carpenter <dan.carpenter@...cle.com>

commit df66499a1fab340c167250a5743931dc50d5f0fa upstream.

We used to take a lock in amp_physical_cfm() but then we moved it to
the caller function.  Unfortunately the unlock on this error path was
overlooked so it leads to a double unlock.

Fixes: a514b17fab51 ("Bluetooth: Refactor locking in amp_physical_cfm")
Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
Signed-off-by: Marcel Holtmann <marcel@...tmann.org>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 net/bluetooth/l2cap_core.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -4902,10 +4902,8 @@ void __l2cap_physical_cfm(struct l2cap_c
 	BT_DBG("chan %p, result %d, local_amp_id %d, remote_amp_id %d",
 	       chan, result, local_amp_id, remote_amp_id);
 
-	if (chan->state == BT_DISCONN || chan->state == BT_CLOSED) {
-		l2cap_chan_unlock(chan);
+	if (chan->state == BT_DISCONN || chan->state == BT_CLOSED)
 		return;
-	}
 
 	if (chan->state != BT_CONNECTED) {
 		l2cap_do_create(chan, result, local_amp_id, remote_amp_id);