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ALSA: USB: 6fire: signedness bug in usb6fire_pcm_prepare()

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rt->rate is an unsigned char so it's never equal to -1.  It's not a huge
problem because the invalid rate is caught inside the call to
usb6fire_pcm_set_rate() which returns -EINVAL.  But if we fix the test
then it prints out the correct error message so that's good.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Dan Carpenter 2011-02-07 20:25:19 +03:00 committed by Takashi Iwai
parent ea18e137ba
commit 8121d91c02
1 changed files with 1 additions and 2 deletions
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3
sound/usb/6fire/pcm.c
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@ -493,13 +493,12 @@ static int usb6fire_pcm_prepare(struct snd_pcm_substream *alsa_sub)
sub->period_off = 0;
if (rt->stream_state == STREAM_DISABLED) {
rt->rate = -1;
for (i = 0; i < ARRAY_SIZE(rates); i++)
if (alsa_rt->rate == rates[i]) {
rt->rate = i;
break;
}
if (rt->rate == -1) {
if (i == ARRAY_SIZE(rates)) {
mutex_unlock(&rt->stream_mutex);
snd_printk("invalid rate %d in prepare.\n",
alsa_rt->rate);