linux-kernel - Re: [PATCH] ASoC: msm8916-wcd-digital: Fix missing clk_disable_unprepare() in msm8916_wcd_digital

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Message-ID: <93751991-30ce-93a0-0f33-105f99b8dfe3@wanadoo.fr>
Date:   Sun, 3 Apr 2022 07:51:41 +0200
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     Miaoqian Lin <linmq006@...il.com>
Cc:     Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Banajit Goswami <bgoswami@...eaurora.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>, alsa-devel@...a-project.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ASoC: msm8916-wcd-digital: Fix missing
 clk_disable_unprepare() in msm8916_wcd_digital_probe

Le 07/03/2022 à 09:45, Miaoqian Lin a écrit :
> Fix the missing clk_disable_unprepare() before return
> from msm8916_wcd_digital_probe in the error handling case.
> 
> Fixes: 150db8c5afa1 ("ASoC: codecs: Add msm8916-wcd digital codec")
> Signed-off-by: Miaoqian Lin <linmq006@...il.com>
> ---
>   sound/soc/codecs/msm8916-wcd-digital.c | 5 ++++-
>   1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/sound/soc/codecs/msm8916-wcd-digital.c b/sound/soc/codecs/msm8916-wcd-digital.c
> index fcc10c8bc625..9ad7fc0baf07 100644
> --- a/sound/soc/codecs/msm8916-wcd-digital.c
> +++ b/sound/soc/codecs/msm8916-wcd-digital.c
> @@ -1201,7 +1201,7 @@ static int msm8916_wcd_digital_probe(struct platform_device *pdev)
>   	ret = clk_prepare_enable(priv->mclk);
>   	if (ret < 0) {
>   		dev_err(dev, "failed to enable mclk %d\n", ret);
> -		return ret;
> +		goto err_clk;
>   	}
>   
>   	dev_set_drvdata(dev, priv);
> @@ -1209,6 +1209,9 @@ static int msm8916_wcd_digital_probe(struct platform_device *pdev)
>   	return devm_snd_soc_register_component(dev, &msm8916_wcd_digital,
>   				      msm8916_wcd_digital_dai,
>   				      ARRAY_SIZE(msm8916_wcd_digital_dai));
> +err_clk:
> +	clk_disable_unprepare(priv->ahbclk);
> +	return ret;
>   }
>   
>   static int msm8916_wcd_digital_remove(struct platform_device *pdev)

Hi,
I think that the same should be done for 'priv->mclk' if 
devm_snd_soc_register_component() returns an error.

Can you give it a look?

CJ