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authorStanislaw Gruszka <sgruszka@redhat.com>2012-03-28 16:01:20 +0200
committerJohn W. Linville <linville@tuxdriver.com>2012-04-13 14:31:50 -0400
commit5f5460706e5feaef286aacce37647f7e57d026e4 (patch)
treecbea8989e8967cf5438328dede657b3dabc6fa4c /net/mac80211/work.c
parent133d40f9a22bdfd2617a446f1e3209537c5415ec (diff)
downloadlinux-5f5460706e5feaef286aacce37647f7e57d026e4.tar.gz
mac80211: protect ->scanning by mutex in ieee80211_work_work()
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/mac80211/work.c')
-rw-r--r--net/mac80211/work.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/net/mac80211/work.c b/net/mac80211/work.c
index 1f74af33901b..b2650a9d45ff 100644
--- a/net/mac80211/work.c
+++ b/net/mac80211/work.c
@@ -122,9 +122,6 @@ static void ieee80211_work_work(struct work_struct *work)
 	enum work_action rma;
 	bool remain_off_channel = false;
 
-	if (local->scanning)
-		return;
-
 	/*
 	 * ieee80211_queue_work() should have picked up most cases,
 	 * here we'll pick the rest.
@@ -134,6 +131,11 @@ static void ieee80211_work_work(struct work_struct *work)
 
 	mutex_lock(&local->mtx);
 
+	if (local->scanning) {
+		mutex_unlock(&local->mtx);
+		return;
+	}
+
 	ieee80211_recalc_idle(local);
 
 	list_for_each_entry_safe(wk, tmp, &local->work_list, list) {