Index: linux-pm/drivers/acpi/scan.c
===================================================================
--- linux-pm.orig/drivers/acpi/scan.c
+++ linux-pm/drivers/acpi/scan.c
@@ -1443,6 +1443,8 @@ void acpi_init_device_object(struct acpi
 	device->flags.match_driver = false;
 	device_initialize(&device->dev);
 	dev_set_uevent_suppress(&device->dev, true);
+	if (handle == ACPI_ROOT_OBJECT)
+		device->dev.kobj.parent = acpi_kobj;
 }
 
 void acpi_device_add_finalize(struct acpi_device *device)