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ALSA: usb: caiaq: check for cdev->n_streams > 1 

Coverity spotted a possible DIV0 condition when cdev->n_streams is 0.

Fix this by making sure the value is > 1 in snd_usb_caiaq_audio_init().

Signed-off-by: Daniel Mack <daniel@zonque.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Daniel Mack 2014-10-07 14:25:13 +02:00 committed by Takashi Iwai
parent 9d36a7dc4d
commit 897c329bcb
1 changed files with 5 additions and 0 deletions
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5
sound/usb/caiaq/audio.c
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@ -816,6 +816,11 @@ int snd_usb_caiaq_audio_init(struct snd_usb_caiaqdev *cdev)
return -EINVAL;
}
if (cdev->n_streams < 2) {
dev_err(dev, "bogus number of streams: %d\n", cdev->n_streams);
return -EINVAL;
}
ret = snd_pcm_new(cdev->chip.card, cdev->product_name, 0,
cdev->n_audio_out, cdev->n_audio_in, &cdev->pcm);