--- a/drivers/base/core.c	2002-10-19 02:45:26.000000000 -0400
+++ b/drivers/base/core.c	2002-10-19 03:07:35.000000000 -0400
@@ -59,7 +59,7 @@
 	devclass_add_device(dev);
  register_done:
 	if (error) {
-		up(&device_sem);
+		down(&device_sem);
 		list_del_init(&dev->g_list);
 		list_del_init(&dev->node);
 		up(&device_sem);