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mac80211: use del_timer_sync for final sta cleanup timer deletion

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commit a56f992cda upstream.

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.)

Tested-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Johannes Berg
2012-12-13 23:08:52 +01:00
committed by Greg Kroah-Hartman
parent 0c3b520e74
commit 9e2bd12a24
1 changed files with 1 additions and 1 deletions
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2
net/mac80211/sta_info.c
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@@ -793,7 +793,7 @@ 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);
}