linux-kernel - Re: sound/soc/codecs/wm9081.c compiler warning

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Date:	Wed, 15 Jul 2009 11:11:19 +0200
From:	Takashi Iwai <tiwai@...e.de>
To:	Jaswinder Singh Rajput <jaswinder@...nel.org>
Cc:	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: sound/soc/codecs/wm9081.c compiler warning

At Wed, 15 Jul 2009 12:00:34 +0530,
Jaswinder Singh Rajput wrote:
> 
> I am getting this compiler warning in linus tree:
> 
>   CC [M]  sound/soc/codecs/wm9081.o
> sound/soc/codecs/wm9081.c: In function ‘configure_clock’:
> sound/soc/codecs/wm9081.c:674: warning: ‘new_sysclk’ may be used uninitialized in this function
> 
> This fixes the warning in my case, hope this will be helpful :

I think your fix is OK, but I let it to Mark :)


thanks,

Takashi

> 
> diff --git a/sound/soc/codecs/wm9081.c b/sound/soc/codecs/wm9081.c
> index 86fc57e..77a7997 100644
> --- a/sound/soc/codecs/wm9081.c
> +++ b/sound/soc/codecs/wm9081.c
> @@ -696,6 +696,7 @@ static int configure_clock(struct snd_soc_codec *codec)
>  		 * not the case, though care must be taken with free
>  		 * running mode.
>  		 */
> +		new_sysclk = 12288000;
>  		if (wm9081->master && wm9081->bclk) {
>  			/* Make sure we can generate CLK_SYS and BCLK
>  			 * and that we've got 3MHz for optimal
> @@ -714,8 +715,6 @@ static int configure_clock(struct snd_soc_codec *codec)
>  				if (new_sysclk > 3000000)
>  					break;
>  			}
> -		} else {
> -			new_sysclk = 12288000;
>  		}
>  
>  		ret = wm9081_set_fll(codec, WM9081_SYSCLK_FLL_MCLK,
> 
> --
> JSR
> 
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