linux-kernel - Re: [PATCH v2 1/2] ASoC: rockchip: Add machine driver for max98090 codec

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Date:	Sun, 19 Jul 2015 15:42:07 +0800
From:	Xing Zheng <zhengxing@...k-chips.com>
To:	Mark Brown <broonie@...nel.org>
CC:	dgreid@...omium.org, dianders@...omium.org, heiko@...ech.de,
	sonnyrao@...omium.org, linux-rockchip@...ts.infradead.org,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Liam Girdwood <lgirdwood@...il.com>,
	Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.de>,
	devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org, alsa-devel@...a-project.org
Subject: Re: [PATCH v2 1/2] ASoC: rockchip: Add machine driver for max98090
 codec

On 2015年07月18日 17:16, Mark Brown wrote:
> On Sat, Jul 18, 2015 at 01:08:43PM +0800, Xing Zheng wrote:
>
>> +	ret = devm_snd_soc_register_card(&pdev->dev, card);
>> +	if (ret) {
>> +		dev_err(&pdev->dev,
>> +			"Soc register card failed %d\n", ret);
>> +		return ret;
>> +	}
>> +
>> +	return ret;
>> +}
>> +
>> +static int snd_rk_mc_remove(struct platform_device *pdev)
>> +{
>> +	struct snd_soc_card *soc_card = platform_get_drvdata(pdev);
>> +
>> +	snd_soc_unregister_card(soc_card);
> The point with using devm_snd_soc_register_card() is that you don't need
> to manually unregister the card - devm_ ensures that the card is freed.
Got it. Thank you.

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