linux-kernel - Re: [PATCH v3 2/2] staging: greybus: remove empty callback function

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Date:   Thu, 14 Apr 2022 16:09:32 -0400
From:   Jaehee Park <jhpark1013@...il.com>
To:     Alex Elder <elder@...e.org>
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,
        Dan Carpenter <dan.carpenter@...cle.com>
Subject: Re: [PATCH v3 2/2] staging: greybus: remove empty callback function

On Wed, Apr 13, 2022 at 07:48:03AM -0500, Alex Elder wrote:
> On 4/12/22 11:38 PM, Jaehee Park wrote:
> > Remove the optional remove callback for the soc_codec_dev_gbaudio
> > structure. The only place it is referenced is
> > snd_soc_component_remove() which is only called if the sound_component
> > pointer is non-null. The null function pointers here can be optionally
> > ommitted. When a sound component is registered this way, the remove
> > callback is optional. We can safely remove the whole gbcodec_remove
> > function, which used to be an empty function with a void return type.
> 
> Now I think your description is a little long...  But that's OK.
> 
> This looks good to me.  Thank you for responding to all our
> feedback.
> 
> Reviewed-by: Alex Elder <elder@...aro.org>

hi Greg, I saw that this was past on to staging-next already. Is it too 
late to add Alex to the reviewed by? 

> > 
> > Suggested-by: Dan Carpenter <dan.carpenter@...cle.com>
> > Signed-off-by: Jaehee Park <jhpark1013@...il.com>
> > ---
> >   drivers/staging/greybus/audio_codec.c | 8 --------
> >   1 file changed, 8 deletions(-)
> > 
> > diff --git a/drivers/staging/greybus/audio_codec.c b/drivers/staging/greybus/audio_codec.c
> > index 0f50d1e51e2c..dc030caa64ba 100644
> > --- a/drivers/staging/greybus/audio_codec.c
> > +++ b/drivers/staging/greybus/audio_codec.c
> > @@ -1029,12 +1029,6 @@ static int gbcodec_probe(struct snd_soc_component *comp)
> >   	return 0;
> >   }
> > -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,
> >   			 unsigned int value)
> >   {
> > @@ -1049,8 +1043,6 @@ static unsigned int gbcodec_read(struct snd_soc_component *comp,
> >   static const struct snd_soc_component_driver soc_codec_dev_gbaudio = {
> >   	.probe	= gbcodec_probe,
> > -	.remove	= gbcodec_remove,
> > -
> >   	.read = gbcodec_read,
> >   	.write = gbcodec_write,
> >   };
>