Johannes Berg 1b91731d23 mac80211: fix tim_lock locking
The ieee80211_beacon_add_tim() function might be called
by drivers with BHs enabled, which causes a potential
deadlock if TX happens at the same time and attempts to
lock the tim_lock as well. Use spin_lock_bh to fix it.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-02-26 00:09:19 +01:00
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