diff --git a/sys/dev/drm2/drm_dp_iic_helper.c b/sys/dev/drm2/drm_dp_iic_helper.c
index 71319e3..f367cb4 100644
--- a/sys/dev/drm2/drm_dp_iic_helper.c
+++ b/sys/dev/drm2/drm_dp_iic_helper.c
@@ -220,14 +222,11 @@ static int
 iic_dp_aux_detach(device_t idev)
 {
 	struct iic_dp_aux_data *aux_data;
-	device_t port;
 
 	aux_data = device_get_softc(idev);
 
-	port = aux_data->port;
 	bus_generic_detach(idev);
-	if (port != NULL)
-		device_delete_child(idev, port);
+	device_delete_children(idev);
 
 	return (0);
 }