linux-kernel - Re: [PATCH 2/2] ASoC: wm8711: Add proper mask for wm8711_set_dai

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Message-ID: <20111031123749.GA10217@opensource.wolfsonmicro.com>
Date:	Mon, 31 Oct 2011 12:37:50 +0000
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Axel Lin <axel.lin@...il.com>
Cc:	linux-kernel@...r.kernel.org,
	Dimitris Papastamos <dp@...nsource.wolfsonmicro.com>,
	Liam Girdwood <lrg@...com>, alsa-devel@...a-project.org
Subject: Re: [PATCH 2/2] ASoC: wm8711: Add proper mask for wm8711_set_dai_fmt

On Fri, Oct 28, 2011 at 11:12:07AM +0800, Axel Lin wrote:
> Add mask for BIT[3:2] (the Input Audio Data Bit Length Select)
> of WM8711_IFACE(07h) register.
> Otherwise, BIT[3:2] will be always set to 0b00 here.

Your changelog here isn't terribly clear and doesn't really correspond
to the change well.  Here you say you're masking something but...

> -	u16 iface = 0;
> +	u16 iface = snd_soc_read(codec, WM8711_IFACE) & 0x000c;

...what you're actually doing is preserving the existing values of some
register bits.  Nevertheless the change looks good so applied.
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