linux-kernel - Re: [PATCH] sound: hdmi: avoid dereferencing uninitialized 'jack' pointer

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Message-ID: <20160216163840.GA7544@sirena.org.uk>
Date:	Tue, 16 Feb 2016 16:38:40 +0000
From:	Mark Brown <broonie@...nel.org>
To:	Takashi Iwai <tiwai@...e.de>
Cc:	Arnd Bergmann <arnd@...db.de>,
	linux-arm-kernel@...ts.infradead.org, alsa-devel@...a-project.org,
	linux-kernel@...r.kernel.org, Jaroslav Kysela <perex@...ex.cz>,
	Han Lu <han.lu@...el.com>,
	Libin Yang <libin.yang@...ux.intel.com>,
	Thierry Reding <treding@...dia.com>,
	David Henningsson <david.henningsson@...onical.com>
Subject: Re: [PATCH] sound: hdmi: avoid dereferencing uninitialized 'jack'
 pointer

On Tue, Feb 16, 2016 at 05:18:29PM +0100, Takashi Iwai wrote:
> Arnd Bergmann wrote:

> > Another option might would be to change snd_jack_new() to return
> > an error if that SND_JACK is disabled, and then require all users
> > to handle the error gracefully, i.e. not fail the probe() function
> > but just not use the jack.

> Yes, I thought of that, too.  If select is no good option, it's a good
> alternative, indeed.

It's going to be a bunch of work to implement though.

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