linux-kernel - Re: [PATCH][V2] ASoC: ti: davinci-mcasp: remove redundant assignment to variable ret

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Date:   Mon, 10 Feb 2020 12:47:14 +0200
From:   Peter Ujfalusi <peter.ujfalusi@...com>
To:     Colin King <colin.king@...onical.com>,
        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>
CC:     <kernel-janitors@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH][V2] ASoC: ti: davinci-mcasp: remove redundant assignment
 to variable ret



On 10/02/2020 11.24, Colin King wrote:
> From: Colin Ian King <colin.king@...onical.com>
> 
> The assignment to ret is redundant as it is not used in the error
> return path and hence can be removed.

Acked-by: Peter Ujfalusi <peter.ujfalusi@...com>

> Addresses-Coverity: ("Unused value")
> Signed-off-by: Colin Ian King <colin.king@...onical.com>
> ---
> V2: explicitly return NULL to improve readability. Thanks to Dan Carpenter for
>     suggesting this improvement.
> ---
>  sound/soc/ti/davinci-mcasp.c | 6 ++----
>  1 file changed, 2 insertions(+), 4 deletions(-)
> 
> diff --git a/sound/soc/ti/davinci-mcasp.c b/sound/soc/ti/davinci-mcasp.c
> index e1e937eb1dc1..6f97639c46cd 100644
> --- a/sound/soc/ti/davinci-mcasp.c
> +++ b/sound/soc/ti/davinci-mcasp.c
> @@ -1764,10 +1764,8 @@ static struct davinci_mcasp_pdata *davinci_mcasp_set_pdata_from_of(
>  	} else if (match) {
>  		pdata = devm_kmemdup(&pdev->dev, match->data, sizeof(*pdata),
>  				     GFP_KERNEL);
> -		if (!pdata) {
> -			ret = -ENOMEM;
> -			return pdata;
> -		}
> +		if (!pdata)
> +			return NULL;
>  	} else {
>  		/* control shouldn't reach here. something is wrong */
>  		ret = -EINVAL;
> 

- Péter

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