From mboxrd@z Thu Jan  1 00:00:00 1970
From: Takashi Iwai <tiwai@suse.de>
Subject: Re: [PATCH - AAF PCM plugin 3/7] aaf: Implement
	Playback mode support
Date: Thu, 11 Oct 2018 09:31:37 +0200
Message-ID: <s5htvltc52e.wl-tiwai@suse.de>
References: <20181003234547.16839-1-andre.guedes@intel.com>
 <20181003234547.16839-4-andre.guedes@intel.com>
 <s5ha7nmxf80.wl-tiwai@suse.de> <1539206847.3120.20.camel@intel.com>
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To: "Guedes, Andre" <andre.guedes@intel.com>
Cc: "alsa-devel@alsa-project.org" <alsa-devel@alsa-project.org>, "Girdwood,
 Liam R" <liam.r.girdwood@intel.com>
List-Id: alsa-devel@alsa-project.org

On Wed, 10 Oct 2018 23:27:29 +0200,
Guedes, Andre wrote:
> 
> On Wed, 2018-10-10 at 12:34 +0200, Takashi Iwai wrote:
> > > +static int aaf_set_hw_constraint(snd_pcm_aaf_t *aaf)
> > > +{
> > > +     int res;
> > > +     snd_pcm_ioplug_t *io = &aaf->io;
> > > +     const unsigned int accesses[] = {
> > > +             SND_PCM_ACCESS_RW_INTERLEAVED,
> > > +     };
> > > +     const unsigned int formats[] = {
> > > +             SND_PCM_FORMAT_S16_BE,
> > > +             SND_PCM_FORMAT_S24_3BE,
> > > +             SND_PCM_FORMAT_S32_BE,
> > > +             SND_PCM_FORMAT_FLOAT_BE,
> > > +     };
> > > +     const unsigned int rates[] = {
> > > +             8000,
> > > +             16000,
> > > +             24000,
> > > +             32000,
> > > +             44100,
> > > +             48000,
> > > +             88200,
> > > +             96000,
> > > +             176400,
> > > +             192000,
> > > +     };
> > 
> > Use static arrays for the above.
> 
> It isn't clear to me what is the point in allocating these variables in
> the global scope. May I ask what is the benefit in adding the 'static'
> modifier to these local variables?

Yes.


Takashi