linux-kernel - RE: [PATCH 08/17] ASoC: sti: sti_uniperif: add missing error check

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Message-ID: <DB9PR10MB4746812285B4E6A66546C12FF17E9@DB9PR10MB4746.EURPRD10.PROD.OUTLOOK.COM>
Date:   Mon, 29 Mar 2021 08:01:21 +0000
From:   Arnaud POULIQUEN <arnaud.pouliquen@...com>
To:     Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
        "alsa-devel@...a-project.org" <alsa-devel@...a-project.org>
CC:     "tiwai@...e.de" <tiwai@...e.de>,
        "broonie@...nel.org" <broonie@...nel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>
Subject: RE: [PATCH 08/17] ASoC: sti: sti_uniperif: add missing error check



> -----Original Message-----
> From: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
> Sent: vendredi 26 mars 2021 22:59
> To: alsa-devel@...a-project.org
> Cc: tiwai@...e.de; broonie@...nel.org; linux-kernel@...r.kernel.org; Pierre-
> Louis Bossart <pierre-louis.bossart@...ux.intel.com>; Arnaud POULIQUEN
> <arnaud.pouliquen@...com>; Liam Girdwood <lgirdwood@...il.com>;
> Jaroslav Kysela <perex@...ex.cz>; Takashi Iwai <tiwai@...e.com>
> Subject: [PATCH 08/17] ASoC: sti: sti_uniperif: add missing error check
> 
> cppcheck warning:
> 
> sound/soc/sti/sti_uniperif.c:490:6: style: Variable 'ret' is reassigned a value
> before the old one has been used. [redundantAssignment]  ret =
> devm_snd_soc_register_component(&pdev->dev,
>      ^
> sound/soc/sti/sti_uniperif.c:486:6: note: ret is assigned  ret =
> sti_uniperiph_cpu_dai_of(node, priv);
>      ^
> sound/soc/sti/sti_uniperif.c:490:6: note: ret is overwritten  ret =
> devm_snd_soc_register_component(&pdev->dev,
>      ^
> 
> sti_uniperiph_cpu_dai_of() can return -EINVAL which seems like a good-enough
> reason to bail.
> 
> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>

Reviewed-by: Arnaud Pouliquen <arnaud.pouliquen@...com>

Thanks
Arnaud

> ---
>  sound/soc/sti/sti_uniperif.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/sound/soc/sti/sti_uniperif.c b/sound/soc/sti/sti_uniperif.c index
> 7b9169f04d6e..67315d9b352d 100644
> --- a/sound/soc/sti/sti_uniperif.c
> +++ b/sound/soc/sti/sti_uniperif.c
> @@ -484,6 +484,8 @@ static int sti_uniperiph_probe(struct platform_device
> *pdev)
>  	priv->pdev = pdev;
> 
>  	ret = sti_uniperiph_cpu_dai_of(node, priv);
> +	if (ret < 0)
> +		return ret;
> 
>  	dev_set_drvdata(&pdev->dev, priv);
> 
> --
> 2.25.1