linux-kernel - Re: [PATCH v2 2/2] staging: greybus: remove unneeded return

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Date:   Wed, 13 Apr 2022 00:44:16 -0400
From:   Jaehee Park <jhpark1013@...il.com>
To:     "Fabio M. De Francesco" <fmdefrancesco@...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 v2 2/2] staging: greybus: remove unneeded return

On Tue, Apr 12, 2022 at 10:35:58PM +0200, Fabio M. De Francesco wrote:
> On martedì 12 aprile 2022 21:59:15 CEST Jaehee Park wrote:
> > An empty function with void return type does not need an explicit
> > return. Issue found by checkpatch.
> > 
> > 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
> > 
> Hi Jaehee,
> 
> If I recall it correctly, Dan Carpenter suggested to remove this empty 
> function. 
> 
> When developers remove lines of code from a function which becomes empty
> after the removals, they also remove the resulting empty function and
> delete all the calls (if there are any left) at the same time.
> 
> Thanks,
> 
> Fabio M. De Francesco 
> 
> 
>

Thanks Fabio for pointing this out!