diff --git a/drivers/base/core.c b/drivers/base/core.c
index d4f35d8..dbcd40b 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -384,6 +384,23 @@
 	device_init_wakeup(dev, 0);
 }
 
+static int virtual_device_parent(struct device *dev)
+{
+	if (!dev->class)
+		return -ENODEV;
+
+	if (!dev->class->virtual_dir) {
+		static struct kobject *virtual_dir = NULL;
+
+		if (!virtual_dir)
+			virtual_dir = kobject_add_dir(&devices_subsys.kset.kobj, "virtual");
+		dev->class->virtual_dir = kobject_add_dir(virtual_dir, dev->class->name);
+	}
+
+	dev->kobj.parent = dev->class->virtual_dir;
+	return 0;
+}
+
 /**
  *	device_add - add device to device hierarchy.
  *	@dev:	device.