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[RFC 2/3] mac80211: protect ->scanning by mutex in ieee80211_work_work()

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Signed-off-by: Stanislaw Gruszka <sgruszka@xxxxxxxxxx>
---
 net/mac80211/work.c |    8 +++++---
 1 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/net/mac80211/work.c b/net/mac80211/work.c
index 1f74af3..b2650a9 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) {
-- 
1.7.1

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