bluetooth l2cap: fix locking in l2cap_global_chan_by_psm

read_lock() ... read_unlock_bh() is clearly bogus.
This was broken by

commit 23691d75cdc69c3b285211b4d77746aa20a17d18
Author: Gustavo F. Padovan <[email protected]>
Date:   Wed Apr 27 18:26:32 2011 -0300

    Bluetooth: Remove l2cap_sk_list

Signed-off-by: Johannes Berg <[email protected]>
Signed-off-by: John W. Linville <[email protected]>

diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index a86f9ba4f05cd473b6ccd20c17a1d293a459877a..e64a1c2df238d3fc0aac368075b8b0fd3bbb6917 100644 (file)
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -906,7 +906,7 @@ static struct l2cap_chan *l2cap_global_chan_by_psm(int state, __le16 psm, bdaddr
                if (c->psm == psm) {
                        /* Exact match. */
                        if (!bacmp(&bt_sk(sk)->src, src)) {
-                               read_unlock_bh(&chan_list_lock);
+                               read_unlock(&chan_list_lock);
                                return c;
                        }