linux-kernel - Re: [PATCH 2/2] staging: greybus: remove return in an empty void function

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Message-ID: <alpine.DEB.2.22.394.2204120901380.3122@hadrien>
Date:   Tue, 12 Apr 2022 09:04:08 +0200 (CEST)
From:   Julia Lawall <julia.lawall@...ia.fr>
To:     Jaehee Park <jhpark1013@...il.com>
cc:     johan@...nel.org, elder@...nel.org, gregkh@...uxfoundation.org,
        greybus-dev@...ts.linaro.org, linux-staging@...ts.linux.dev,
        linux-kernel@...r.kernel.org, outreachy@...ts.linux.dev
Subject: Re: [PATCH 2/2] staging: greybus: remove return in an empty void
 function

On Mon, 11 Apr 2022, Jaehee Park wrote:

> Issue found by checkpatch:
> WARNING: void function return statements are not generally useful

Even for a simple change, it wouldbe better to follow the model that the
subject line should concisely orient the reader (eg "remove unneeded
return") and the log message should give a more complete description.
Simply repeating what checkpatch tells you is rarely a good idea.  It says
what the problem is in a general way, whereas you should be explaining the
reasoning behind your fix in a specific case.  Here you could say that an
empty function with void return type does not need an explicit return, and
that the problem was detected with checkpatch.

julia

>
> Signed-off-by: Jaehee Park <jhpark1013@...il.com>
> ---
>  drivers/staging/greybus/audio_codec.c | 1 -
>  1 file changed, 1 deletion(-)
>
> diff --git a/drivers/staging/greybus/audio_codec.c b/drivers/staging/greybus/audio_codec.c
> index 0f50d1e51e2c..3e3a16568def 100644
> --- a/drivers/staging/greybus/audio_codec.c
> +++ b/drivers/staging/greybus/audio_codec.c
> @@ -1032,7 +1032,6 @@ static int gbcodec_probe(struct snd_soc_component *comp)
>  static void gbcodec_remove(struct snd_soc_component *comp)
>  {
>  	/* Empty function for now */
> -	return;
>  }
>
>  static int gbcodec_write(struct snd_soc_component *comp, unsigned int reg,
> --
> 2.25.1
>
>
>