diff --git a/net/mac802154/iface.c b/net/mac802154/iface.c
index d8043378e7a067f75cbc31bbbf417dc345585be3..692731d240e483cf4ca3e2936fdd53bbb2c46991 100644
--- a/net/mac802154/iface.c
+++ b/net/mac802154/iface.c
@@ -308,6 +308,7 @@ static int mac802154_slave_close(struct net_device *dev)
 	clear_bit(SDATA_STATE_RUNNING, &sdata->state);
 
 	if (!local->open_count) {
+		flush_workqueue(local->workqueue);
 		hrtimer_cancel(&local->ifs_timer);
 		drv_stop(local);
 	}