mac80211: use del_timer_sync for final sta cleanup timer deletion
commit a56f992cdabc63f56b4b142885deebebf936ff76 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>
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@ -844,7 +844,7 @@ void sta_info_init(struct ieee80211_local *local)
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void sta_info_stop(struct ieee80211_local *local)
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{
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del_timer(&local->sta_cleanup);
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del_timer_sync(&local->sta_cleanup);
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sta_info_flush(local, NULL);
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}
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