wifi: mac80211: unregister netdevs through cfg80211

Since we want to have wiphy_lock() for the unregistration
in the future, unregister also netdevs via cfg80211 now
to be able to hold the wiphy_lock() for it.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

net/mac80211/iface.c

@@ -2258,7 +2258,6 @@ void ieee80211_remove_interfaces(struct ieee80211_local *local)
 {
 	struct ieee80211_sub_if_data *sdata, *tmp;
 	LIST_HEAD(unreg_list);
-	LIST_HEAD(wdev_list);
 
 	ASSERT_RTNL();
 
@@ -2281,23 +2280,18 @@ void ieee80211_remove_interfaces(struct ieee80211_local *local)
 	ieee80211_txq_teardown_flows(local);
 
 	mutex_lock(&local->iflist_mtx);
-	list_for_each_entry_safe(sdata, tmp, &local->interfaces, list) {
-		list_del(&sdata->list);
-
-		if (sdata->dev)
-			unregister_netdevice_queue(sdata->dev, &unreg_list);
-		else
-			list_add(&sdata->list, &wdev_list);
-	}
+	list_splice_init(&local->interfaces, &unreg_list);
 	mutex_unlock(&local->iflist_mtx);
 
-	unregister_netdevice_many(&unreg_list);
-
 	wiphy_lock(local->hw.wiphy);
-	list_for_each_entry_safe(sdata, tmp, &wdev_list, list) {
+	list_for_each_entry_safe(sdata, tmp, &unreg_list, list) {
+		bool netdev = sdata->dev;
+
 		list_del(&sdata->list);
 		cfg80211_unregister_wdev(&sdata->wdev);
-		kfree(sdata);
+
+		if (!netdev)
+			kfree(sdata);
 	}
 	wiphy_unlock(local->hw.wiphy);
 }