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

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Date:	Mon, 19 Mar 2007 11:27:52 +0100
From:	Takashi Iwai <tiwai@...e.de>
To:	Adrian Bunk <bunk@...sta.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()

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...?

> 
> 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;
>  }
>  
> 
-
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