linux-kernel - Re: [PATCH 2/2] ALSA: compress: Reduce the scope for two variables in snd_compr_set

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Date:   Mon, 22 Aug 2016 10:31:56 +0530
From:   Vinod Koul <vinod.koul@...el.com>
To:     Julia Lawall <julia.lawall@...6.fr>
Cc:     SF Markus Elfring <elfring@...rs.sourceforge.net>,
        alsa-devel@...a-project.org, Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: Re: [PATCH 2/2] ALSA: compress: Reduce the scope for two variables
 in snd_compr_set_params()

On Sun, Aug 21, 2016 at 04:36:22PM -0400, Julia Lawall wrote:
> 
> 
> On Sun, 21 Aug 2016, SF Markus Elfring wrote:
> 
> > From: Markus Elfring <elfring@...rs.sourceforge.net>
> > Date: Sun, 21 Aug 2016 21:26:18 +0200
> >
> > Reduce the scope for the local variables to an if branch.
> >
> > Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
> > ---
> >  sound/core/compress_offload.c | 12 ++++++------
> >  1 file changed, 6 insertions(+), 6 deletions(-)
> >
> > diff --git a/sound/core/compress_offload.c b/sound/core/compress_offload.c
> > index 583d407..b43aec5 100644
> > --- a/sound/core/compress_offload.c
> > +++ b/sound/core/compress_offload.c
> > @@ -545,14 +545,14 @@ static int snd_compress_check_input(struct snd_compr_params *params)
> >  static int
> >  snd_compr_set_params(struct snd_compr_stream *stream, unsigned long arg)
> >  {
> > -	struct snd_compr_params *params;
> > -	int retval;
> > -
> >  	if (stream->runtime->state == SNDRV_PCM_STATE_OPEN) {
> >  		/*
> >  		 * we should allow parameter change only when stream has been
> >  		 * opened not in other cases
> >  		 */
> > +		int retval;
> > +		struct snd_compr_params *params;
> 
> I don't like this at all.  Local variables should be at the top of the
> function, not hiding under 4 lines of comments in the middle of the code.

I agree with you this, it doesn't help IMO as well

-- 
~Vinod