From: Johannes Berg <johannes@sipsolutions.net>
Date: Thu, 12 Mar 2009 08:55:09 +0000 (+0100)
Subject: nl80211: rework locking
X-Git-Tag: v2.6.30-rc1~642^2^2~72
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3b85875a252dbbd95c2e04d73639719a0a79634e;p=pandora-kernel.git

nl80211: rework locking

When I added scanning to cfg80211, we got a lock dependency like this:
	rtnl --> cfg80211_mtx

nl80211, on the other hand, has the reverse lock dependency:
	cfg80211_mtx --> rtnl

which clearly is a bad idea. This patch reworks nl80211 to take these
two locks in the other order to fix the possible, and easily
triggerable, deadlock.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---

Reading git-diff-tree failed