linux-kernel - Re: [PATCH 2/6] ASoC: max98088: Add DT bindings

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Date:	Wed, 18 Feb 2015 22:08:44 +0300
From:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:	Andreas Färber <afaerber@...e.de>,
	Sangbeom Kim <sbkim73@...sung.com>,
	alsa-devel@...a-project.org, linux-samsung-soc@...r.kernel.org
CC:	devicetree@...r.kernel.org, Doug Anderson <dianders@...omium.org>,
	Vincent Palatin <vpalatin@...omium.org>,
	Lars-Peter Clausen <lars@...afoo.de>,
	Takashi Iwai <tiwai@...e.de>,
	Xiubo Li <Li.Xiubo@...escale.com>,
	Liam Girdwood <lgirdwood@...il.com>,
	linux-kernel@...r.kernel.org, Mark Brown <broonie@...nel.org>,
	Jaroslav Kysela <perex@...ex.cz>,
	Tomasz Figa <tomasz.figa@...il.com>,
	Javier Martinez Canillas <javier.martinez@...labora.co.uk>,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 2/6] ASoC: max98088: Add DT bindings

Hello.

On 02/18/2015 09:25 PM, Andreas Färber wrote:

> "maxim,max98089" will be used for the Spring Chromebook.

> Signed-off-by: Andreas Färber <afaerber@...e.de>
> ---
>   sound/soc/codecs/max98088.c | 8 ++++++++
>   1 file changed, 8 insertions(+)

> diff --git a/sound/soc/codecs/max98088.c b/sound/soc/codecs/max98088.c
> index 805b3f8cd39d..69a21d1946e3 100644
> --- a/sound/soc/codecs/max98088.c
> +++ b/sound/soc/codecs/max98088.c
> @@ -2009,10 +2009,18 @@ static const struct i2c_device_id max98088_i2c_id[] = {
>   };
>   MODULE_DEVICE_TABLE(i2c, max98088_i2c_id);
>
> +static const struct of_device_id max98088_of_match[] = {

    If I don't mistake, gcc will complain about this variable being unused if 
CONFIG_OF=n.

> +	{ .compatible = "maxim,max98088" },
> +	{ .compatible = "maxim,max98089" },
> +	{ }
> +};
> +MODULE_DEVICE_TABLE(of, max98088_of_match);
> +
>   static struct i2c_driver max98088_i2c_driver = {
>   	.driver = {
>   		.name = "max98088",
>   		.owner = THIS_MODULE,
> +		.of_match_table = of_match_ptr(max98088_of_match),

    You probably don;t need of_match_ptr(). Either that or do something with 
the match table, like enclosing into #ifdef or annotating with '__maybe_unused'.

[...]

WBR, Sergei

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