[PATCH] kobject: fix double kobject_put() in error path of kobject_add()

[Greg KH <greg@kroah.com>]

This fixes a problem introduced in the previous set of driver model
changes that has been seen by a lot of people (most notibly the greater
than 256 pty users, but others might also be hitting this without
realizing it.)

Also add a comment so we don't try to "fix" this again.

Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

--- a/lib/kobject.c	2004-11-05 10:06:33 -08:00
+++ b/lib/kobject.c	2004-11-08 23:58:02 -08:00
@@ -181,10 +181,10 @@ int kobject_add(struct kobject * kobj)
 
 	error = create_dir(kobj);
 	if (error) {
+		/* unlink does the kobject_put() for us */
 		unlink(kobj);
 		if (parent)
 			kobject_put(parent);
-		kobject_put(kobj);
 	} else {
 		kobject_hotplug(kobj, KOBJ_ADD);
 	}