Index: head/sys/dev/intel/spi.c
===================================================================
--- head/sys/dev/intel/spi.c
+++ head/sys/dev/intel/spi.c
@@ -506,7 +506,7 @@
 		bus_release_resource(dev, SYS_RES_IRQ,
 		    sc->sc_irq_rid, sc->sc_irq_res);
 
-	return (0);
+	return (bus_generic_detach(dev));
 }
 
 static device_method_t intelspi_methods[] = {