linux-kernel - Re: [PATCH 02/23] ASoC: ad1836: remove useless return

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Date:   Fri, 12 Mar 2021 19:50:43 +0100
From:   Lars-Peter Clausen <lars@...afoo.de>
To:     Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
        alsa-devel@...a-project.org
Cc:     tiwai@...e.de, broonie@...nel.org, linux-kernel@...r.kernel.org,
        Nuno Sá <nuno.sa@...log.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>
Subject: Re: [PATCH 02/23] ASoC: ad1836: remove useless return

On 3/12/21 7:22 PM, Pierre-Louis Bossart wrote:
> Cppcheck warning:
>
> sound/soc/codecs/ad1836.c:311:9: warning: Identical condition and return expression 'ret', return value is always 0 [identicalConditionAfterEarlyExit]
>   return ret;
>          ^
> sound/soc/codecs/ad1836.c:308:6: note: If condition 'ret' is true, the function will return/exit
>   if (ret)
>       ^
> sound/soc/codecs/ad1836.c:311:9: note: Returning identical expression 'ret'
>   return ret;
>          ^
>
> Likely copy/paste between adc and dac cases.
>
> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
> ---
>   sound/soc/codecs/ad1836.c | 2 --
>   1 file changed, 2 deletions(-)
>
> diff --git a/sound/soc/codecs/ad1836.c b/sound/soc/codecs/ad1836.c
> index a46152560294..08a5651bed9f 100644
> --- a/sound/soc/codecs/ad1836.c
> +++ b/sound/soc/codecs/ad1836.c
> @@ -305,8 +305,6 @@ static int ad1836_probe(struct snd_soc_component *component)
>   		return ret;
>   
>   	ret = snd_soc_dapm_add_routes(dapm, ad183x_adc_routes, num_adcs);
> -	if (ret)
> -		return ret;
>   
>   	return ret;
>   }

We could even go one step further and do

return snd_soc_dapm_add_routes(dapm, ad183x_adc_routes, num_adcs);

But either is fine. Thanks for cleaning this up