commit 3b9239a8f435f80a07364fdaefb5490197fb1079
author Mat Martineau <mathewm@codeaurora.org> Thu Feb 16 11:54:30 2012 -0800
committer Linux Build Service Account <lnxbuild@localhost> Wed Mar 07 18:11:59 2012 -0700
tree a70893a342f0880e0e02661582dbc3ceaf5ed802
parent 2e18c88562c94aafbf5cbc15d4ee296024f98c08

Bluetooth: Lock sockets when closing HCI device

When a Bluetooth device is powered down while RFCOMM connections are
open, there are race conditions where RFCOMM tries to use an HCI
connection after the data structures have been deleted.  Since the
powerdown procedure runs in process context, it is possible to lock
sockets before accessing them to close connections.  This change adds
that locking, which will serialize socket access between processors
during powerdown.

Change-Id: I587720799b35d9ee6e66340bdeda8a2b9e2ea7b5
CRs-fixed: 336893
Signed-off-by: Mat Martineau <mathewm@codeaurora.org>