linux-kernel - Re: [RFC: 2.6.21 patch] fix sound/pci/ice1712/wtm.c:wtm

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Date:	Mon, 19 Mar 2007 14:08:39 +0100
From:	Adrian Bunk <bunk@...sta.de>
To:	Takashi Iwai <tiwai@...e.de>
Cc:	Clement Guedez <klem.dev@...il.com>,
	Jaroslav Kysela <perex@...e.cz>, alsa-devel@...a-project.org,
	linux-kernel@...r.kernel.org
Subject: Re: [RFC: 2.6.21 patch] fix sound/pci/ice1712/wtm.c:wtm_init()

On Mon, Mar 19, 2007 at 11:27:52AM +0100, Takashi Iwai wrote:
> At Mon, 19 Mar 2007 10:24:38 +0100,
> Adrian Bunk wrote:
> > 
> > The Coverity checker spotted this bogus for() loop that produces an 
> > array overrun.
> 
> Hmm, I'm dense now before a caffee, but how can it overrun...?

Looking again, it seems I'm the one who should have drunken more tea 
before looking at this.  :-(

> > It seems what actually should be done is quite simple?
> 
> Yes... unless someone wants to add more register initializations
> there.
> 
> 
> Takashi
> 
> > 
> > Signed-off-by: Adrian Bunk <bunk@...sta.de>
> > 
> > ---
> > 
> >  sound/pci/ice1712/wtm.c |   14 +++-----------
> >  1 file changed, 3 insertions(+), 11 deletions(-)
> > 
> > --- linux-2.6.21-rc3-mm2/sound/pci/ice1712/wtm.c.old	2007-03-19 01:29:23.000000000 +0100
> > +++ linux-2.6.21-rc3-mm2/sound/pci/ice1712/wtm.c	2007-03-19 01:33:06.000000000 +0100
> > @@ -489,23 +489,15 @@
> >  
> >  static int __devinit wtm_init(struct snd_ice1712 *ice)
> >  {
> > -	static unsigned short stac_inits_prodigy[] = {
> > -		STAC946X_RESET, 0,
> > -		(unsigned short)-1
> > -	};
> > -	unsigned short *p;
> > -		
> >  	/*WTM 192M*/
> >  	ice->num_total_dacs = 8;
> >  	ice->num_total_adcs = 4;
> >  	ice->force_rdma1 = 1;
> >  
> >  	/*initialize codec*/
> > -	p = stac_inits_prodigy;
> > -	for (; *p != (unsigned short)-1; p += 2) {
> > -		stac9460_put(ice, p[0], p[1]);
> > -		stac9460_2_put(ice, p[0], p[1]);
> > -	}
> > +	stac9460_put(ice, STAC946X_RESET, 0);
> > +	stac9460_2_put(ice, STAC946X_RESET, 0);
> > +
> >  	return 0;
> >  }
> >  
> > 

cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

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