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ALSA: sound/usb/format: silence uninitialized variable warnings 

Gcc complains that ret might be used uninitialized:

sound/usb/format.c: In function ‘snd_usb_parse_audio_format’:
sound/usb/format.c:354: warning: ‘ret’ may be used uninitialized in this function
sound/usb/format.c:354: note: ‘ret’ was declared here
sound/usb/format.c:414: warning: ‘ret’ may be used uninitialized in this function
sound/usb/format.c:414: note: ‘ret’ was declared here

I suppose it could be uninitialized if there is ever a UAC_VERSION_3
released. Anyway this patch is worthwhile if only to silence the gcc
warning.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Acked-by: Daniel Mack <daniel@caiaq.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Dan Carpenter 2010-08-14 19:29:53 +02:00 committed by Takashi Iwai
parent 31cbd97726
commit 38d7b08f37
1 changed files with 8 additions and 0 deletions
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8
sound/usb/format.c
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@ -392,6 +392,10 @@ static int parse_audio_format_i(struct snd_usb_audio *chip,
/* fp->channels is already set in this case */
ret = parse_audio_format_rates_v2(chip, fp);
break;
default:
snd_printk(KERN_ERR "%d:%u:%d : invalid protocol version %d\n",
chip->dev->devnum, fp->iface, fp->altsetting, protocol);
return -EINVAL;
}
if (fp->channels < 1) {
@ -452,6 +456,10 @@ static int parse_audio_format_ii(struct snd_usb_audio *chip,
ret = parse_audio_format_rates_v2(chip, fp);
break;
}
default:
snd_printk(KERN_ERR "%d:%u:%d : invalid protocol version %d\n",
chip->dev->devnum, fp->iface, fp->altsetting, protocol);
return -EINVAL;
}
return ret;