commit: a56f992cdabc63f56b4b142885deebebf936ff76
From: Johannes Berg <[email protected]>
Date: Thu, 13 Dec 2012 23:08:52 +0100
Subject: mac80211: use del_timer_sync for final sta cleanup timer deletion

This is a very old bug, but there's nothing that prevents the
timer from running while the module is being removed when we
only do del_timer() instead of del_timer_sync().

The timer should normally not be running at this point, but
it's not clearly impossible (or we could just remove this.)

Cc: [email protected]
Tested-by: Ben Greear <[email protected]>
Signed-off-by: Johannes Berg <[email protected]>
---
 net/mac80211/sta_info.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index 8bbd3b0..ca9fde1 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -884,7 +884,7 @@ void sta_info_init(struct ieee80211_local *local)
 
 void sta_info_stop(struct ieee80211_local *local)
 {
-       del_timer(&local->sta_cleanup);
+       del_timer_sync(&local->sta_cleanup);
        sta_info_flush(local, NULL);
 }
 
-- 
1.7.3.4
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