linux-kernel - Re: [PATCH] virtio_console: correct error message on failure of debugfs_create

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Date:	Mon, 24 Dec 2012 11:55:46 +0000
From:	Arnd Bergmann <arnd@...db.de>
To:	Amit Shah <amit.shah@...hat.com>
Cc:	Sasha Levin <sasha.levin@...cle.com>,
	"Greg Kroah-Hartman" <gregkh@...uxfoundation.org>,
	virtualization@...ts.linux-foundation.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] virtio_console: correct error message on failure of debugfs_create_dir

On Friday 21 December 2012, Amit Shah wrote:
> On (Thu) 20 Dec 2012 [14:11:21], Sasha Levin wrote:
> > debugfs_create_dir() returns NULL if it fails, there's little point in
> > calling PTR_ERR on it.
>
> debugfs_create_dir() does return an error value if debugfs is not
> enabled.
> 
> This check for !pdrvdata.debugfs_dir should infact use
> IS_ERR_OR_NULL().  Care to submit a patch for that?

How about we fix the stub instead to return NULL when debugfs is disabled?

	Arnd
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