linux-kernel - Re: [RFC] Sample kset/ktype/kobject implementation

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Message-ID: <20071129103907.0b404071@gondolin.boeblingen.de.ibm.com>
Date:	Thu, 29 Nov 2007 10:39:07 +0100
From:	Cornelia Huck <cornelia.huck@...ibm.com>
To:	Greg KH <greg@...ah.com>
Cc:	linux-kernel@...r.kernel.org, Kay Sievers <kay.sievers@...y.org>,
	Alan Stern <stern@...land.harvard.edu>,
	Jonathan Corbet <corbet@....net>,
	Randy Dunlap <randy.dunlap@...cle.com>
Subject: Re: [RFC] Sample kset/ktype/kobject implementation

On Wed, 28 Nov 2007 22:11:39 -0800,
Greg KH <greg@...ah.com> wrote:

> > > 	foo->kobj.kset = example_kset;
> > > 	foo->kobj.ktype = &foo_ktype;
> > > 
> > > 	/*
> > > 	 * Register the kobject with the kernel, all the default files will
> > > 	 * be created here and the uevent will be sent out.  If we were to
> > > 	 * call kobject_init() and then kobject_add() we would be
> > > 	 * responsible for sending out the initial KOBJ_ADD uevent.
> > > 	 */
> > > 	retval = kobject_register(&foo->kobj);
> > > 	if (retval) {
> > > 		kfree(foo);
> > 
> > kobject_put(foo) is needed since it gets you through kobject_cleanup()
> > where the name can be freed.
> 
> No, kobject_register() should have handled that for us, right?

kobject_register() doesn't do a kobject_put() if kobject_add() failed.
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