linux-kernel - Re: [PATCH 06/10] ASoC: wm8940: Convert to snd_soc_cache

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Date:	Thu, 6 Oct 2011 14:18:12 +0100
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Jonathan Cameron <jic23@....ac.uk>
Cc:	Axel Lin <axel.lin@...il.com>, linux-kernel@...r.kernel.org,
	Ian Lartey <ian@...nsource.wolfsonmicro.com>,
	Dimitris Papastamos <dp@...nsource.wolfsonmicro.com>,
	Liam Girdwood <lrg@...com>, alsa-devel@...a-project.org
Subject: Re: [PATCH 06/10] ASoC: wm8940: Convert to snd_soc_cache_sync

On Thu, Oct 06, 2011 at 12:28:41PM +0100, Jonathan Cameron wrote:
> On 10/06/11 07:17, Axel Lin wrote:

> > +static int wm8940_volatile_register(struct snd_soc_codec *codec,
> > +				    unsigned int reg)
> > +{
> > +	switch (reg) {
> > +	case WM8940_SOFTRESET:
> > +		return 1;
> > +	default:
> > +		return 0;
> > +	}
> > +}

> I guess this makes sense from point of view of keeping things inline with
> more complex drivers.  Otherwise I'd expect to see something like:
> {
> 	return !!(reg == WM894_SOFTRESET);
> }

On the other hand we actually want people to be able to read the code
(though the !! there which is the major complication isn't actually
doing anything...).
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