mac820154: move interface unregistration into iface

This patch move the iface unregistration into iface.c file to have
a behaviour which is similar like mac80211. Also iface handling should
be inside iface.c file only.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

net/mac802154/ieee802154_i.h

@@ -172,5 +172,6 @@ void ieee802154_if_remove(struct ieee802154_sub_if_data *sdata);
 struct net_device *
 ieee802154_if_add(struct ieee802154_local *local, const char *name,
 		  struct wpan_dev **new_wpan_dev, int type);
+void ieee802154_remove_interfaces(struct ieee802154_local *local);
 
 #endif /* __IEEE802154_I_H */

net/mac802154/iface.c

@@ -535,3 +535,16 @@ void ieee802154_if_remove(struct ieee802154_sub_if_data *sdata)
 	synchronize_rcu();
 	unregister_netdevice(sdata->dev);
 }
+
+void ieee802154_remove_interfaces(struct ieee802154_local *local)
+{
+	struct ieee802154_sub_if_data *sdata, *next;
+
+	list_for_each_entry_safe(sdata, next, &local->interfaces, list) {
+		mutex_lock(&sdata->local->iflist_mtx);
+		list_del(&sdata->list);
+		mutex_unlock(&sdata->local->iflist_mtx);
+
+		unregister_netdevice(sdata->dev);
+	}
+}

net/mac802154/main.c

@@ -165,7 +165,6 @@ EXPORT_SYMBOL(ieee802154_register_hw);
 void ieee802154_unregister_hw(struct ieee802154_hw *hw)
 {
 	struct ieee802154_local *local = hw_to_local(hw);
-	struct ieee802154_sub_if_data *sdata, *next;
 
 	tasklet_kill(&local->tasklet);
 	flush_workqueue(local->workqueue);
@@ -173,13 +172,7 @@ void ieee802154_unregister_hw(struct ieee802154_hw *hw)
 
 	rtnl_lock();
 
-	list_for_each_entry_safe(sdata, next, &local->interfaces, list) {
-		mutex_lock(&sdata->local->iflist_mtx);
-		list_del(&sdata->list);
-		mutex_unlock(&sdata->local->iflist_mtx);
-
-		unregister_netdevice(sdata->dev);
-	}
+	ieee802154_remove_interfaces(local);
 
 	rtnl_unlock();