diff --git a/sys/dev/gpio/gpiobus.c b/sys/dev/gpio/gpiobus.c
--- a/sys/dev/gpio/gpiobus.c
+++ b/sys/dev/gpio/gpiobus.c
@@ -618,7 +618,7 @@
 	    ("gpiobus mutex not initialized"));
 	GPIOBUS_LOCK_DESTROY(sc);
 
-	if ((err = bus_detach_children(dev)) != 0)
+	if ((err = bus_generic_detach(dev)) != 0)
 		return (err);
 
 	rman_fini(&sc->sc_intr_rman);