1 files changed, 17 insertions, 22 deletions

diff --git a/net/mac80211/work.c b/net/mac80211/work.c
index 81d4ad64184a..ae344d1ba056 100644
--- a/net/mac80211/work.c
+++ b/net/mac80211/work.c
@@ -43,7 +43,7 @@ enum work_action {
 /* utils */
 static inline void ASSERT_WORK_MTX(struct ieee80211_local *local)
 {
-	WARN_ON(!mutex_is_locked(&local->work_mtx));
+	lockdep_assert_held(&local->mtx);
 }
 
 /*
@@ -757,7 +757,7 @@ static void ieee80211_work_rx_queued_mgmt(struct ieee80211_local *local,
 	mgmt = (struct ieee80211_mgmt *) skb->data;
 	fc = le16_to_cpu(mgmt->frame_control);
 
-	mutex_lock(&local->work_mtx);
+	mutex_lock(&local->mtx);
 
 	list_for_each_entry(wk, &local->work_list, list) {
 		const u8 *bssid = NULL;
@@ -833,7 +833,7 @@ static void ieee80211_work_rx_queued_mgmt(struct ieee80211_local *local,
 		WARN(1, "unexpected: %d", rma);
 	}
 
-	mutex_unlock(&local->work_mtx);
+	mutex_unlock(&local->mtx);
 
 	if (rma != WORK_ACT_DONE)
 		goto out;
@@ -845,9 +845,9 @@ static void ieee80211_work_rx_queued_mgmt(struct ieee80211_local *local,
 	case WORK_DONE_REQUEUE:
 		synchronize_rcu();
 		wk->started = false; /* restart */
-		mutex_lock(&local->work_mtx);
+		mutex_lock(&local->mtx);
 		list_add_tail(&wk->list, &local->work_list);
-		mutex_unlock(&local->work_mtx);
+		mutex_unlock(&local->mtx);
 	}
 
  out:
@@ -888,9 +888,9 @@ static void ieee80211_work_work(struct work_struct *work)
 	while ((skb = skb_dequeue(&local->work_skb_queue)))
 		ieee80211_work_rx_queued_mgmt(local, skb);
 
-	ieee80211_recalc_idle(local);
+	mutex_lock(&local->mtx);
 
-	mutex_lock(&local->work_mtx);
+	ieee80211_recalc_idle(local);
 
 	list_for_each_entry_safe(wk, tmp, &local->work_list, list) {
 		bool started = wk->started;
@@ -995,20 +995,16 @@ static void ieee80211_work_work(struct work_struct *work)
 		run_again(local, jiffies + HZ/2);
 	}
 
-	mutex_lock(&local->scan_mtx);
-
 	if (list_empty(&local->work_list) && local->scan_req &&
 	    !local->scanning)
 		ieee80211_queue_delayed_work(&local->hw,
 					     &local->scan_work,
 					     round_jiffies_relative(0));
 
-	mutex_unlock(&local->scan_mtx);
-
-	mutex_unlock(&local->work_mtx);
-
 	ieee80211_recalc_idle(local);
 
+	mutex_unlock(&local->mtx);
+
 	list_for_each_entry_safe(wk, tmp, &free_work, list) {
 		wk->done(wk, NULL);
 		list_del(&wk->list);
@@ -1035,16 +1031,15 @@ void ieee80211_add_work(struct ieee80211_work *wk)
 	wk->started = false;
 
 	local = wk->sdata->local;
-	mutex_lock(&local->work_mtx);
+	mutex_lock(&local->mtx);
 	list_add_tail(&wk->list, &local->work_list);
-	mutex_unlock(&local->work_mtx);
+	mutex_unlock(&local->mtx);
 
 	ieee80211_queue_work(&local->hw, &local->work_work);
 }
 
 void ieee80211_work_init(struct ieee80211_local *local)
 {
-	mutex_init(&local->work_mtx);
 	INIT_LIST_HEAD(&local->work_list);
 	setup_timer(&local->work_timer, ieee80211_work_timer,
 		    (unsigned long)local);
@@ -1057,7 +1052,7 @@ void ieee80211_work_purge(struct ieee80211_sub_if_data *sdata)
 	struct ieee80211_local *local = sdata->local;
 	struct ieee80211_work *wk;
 
-	mutex_lock(&local->work_mtx);
+	mutex_lock(&local->mtx);
 	list_for_each_entry(wk, &local->work_list, list) {
 		if (wk->sdata != sdata)
 			continue;
@@ -1065,19 +1060,19 @@ void ieee80211_work_purge(struct ieee80211_sub_if_data *sdata)
 		wk->started = true;
 		wk->timeout = jiffies;
 	}
-	mutex_unlock(&local->work_mtx);
+	mutex_unlock(&local->mtx);
 
 	/* run cleanups etc. */
 	ieee80211_work_work(&local->work_work);
 
-	mutex_lock(&local->work_mtx);
+	mutex_lock(&local->mtx);
 	list_for_each_entry(wk, &local->work_list, list) {
 		if (wk->sdata != sdata)
 			continue;
 		WARN_ON(1);
 		break;
 	}
-	mutex_unlock(&local->work_mtx);
+	mutex_unlock(&local->mtx);
 }
 
 ieee80211_rx_result ieee80211_work_rx_mgmt(struct ieee80211_sub_if_data *sdata,
@@ -1163,7 +1158,7 @@ int ieee80211_wk_cancel_remain_on_channel(struct ieee80211_sub_if_data *sdata,
 	struct ieee80211_work *wk, *tmp;
 	bool found = false;
 
-	mutex_lock(&local->work_mtx);
+	mutex_lock(&local->mtx);
 	list_for_each_entry_safe(wk, tmp, &local->work_list, list) {
 		if ((unsigned long) wk == cookie) {
 			wk->timeout = jiffies;
@@ -1171,7 +1166,7 @@ int ieee80211_wk_cancel_remain_on_channel(struct ieee80211_sub_if_data *sdata,
 			break;
 		}
 	}
-	mutex_unlock(&local->work_mtx);
+	mutex_unlock(&local->mtx);
 
 	if (!found)
 		return -ENOENT;