[PATCH 3.14 034/228] mac80211: fix nested rtnl locking on ieee80211_reconfig

Greg Kroah-Hartman
2014-06-05T00:48:27Z

From: Eliad Peller <eliad@wizery.com>

commit e669ba2d06c6195662601956454ac959892f0762 upstream.

ieee80211_reconfig already holds rtnl, so calling
cfg80211_sched_scan_stopped results in deadlock.

Use the rtnl-version of this function instead.

Fixes: d43c6b6 ("mac80211: reschedule sched scan after HW restart")
Signed-off-by: Eliad Peller <eliadx.peller@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
net/mac80211/util.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -1754,7 +1754,7 @@ int ieee80211_reconfig(struct ieee80211_
mutex_unlock(&local->mtx);

if (sched_scan_stopped)
- cfg80211_sched_scan_stopped(local->hw.wiphy);
+ cfg80211_sched_scan_stopped_rtnl(local->hw.wiphy);

/*
* If this is for hw restart things are still running.