linux-kernel - Re: [PATCH] driver core: fix device

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Date:	Sun, 8 Dec 2013 07:27:37 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	David Herrmann <dh.herrmann@...il.com>
Cc:	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] driver core: fix device_create() error path

On Sun, Dec 08, 2013 at 03:42:33PM +0100, David Herrmann wrote:
> Hi Greg
> 
> Ping?

It's in my "todo" queue, don't worry, it's not lost.

> On Thu, Nov 21, 2013 at 8:15 PM, David Herrmann <dh.herrmann@...il.com> wrote:
> > We call put_device() in the error path, which is fine for dev==NULL.
> > However, in case kobject_set_name_vargs() fails, we have dev!=NULL but
> > device_initialized() wasn't called, yet.

If kobject_set_name_vargs() fails, we have bigger problems than this :)

And I think it's safe for a put_device() on a device that wasn't
initialized(), we just get a warning message if that happens.

Not to say that your patch is wrong, I'll look at it soon, but things
should still recover ok from what I can tell.

Oh, and there's the much-complained about memory leak in
kobject_set_name_vargs() if something goes wrong there as well, I have a
patch sitting in my queue to hopefully fix that up.

thanks,

greg k-h
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