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>

1 files changed, 5 insertions, 0 deletions

diff --git a/sound/usb/caiaq/audio.c b/sound/usb/caiaq/audio.c
index 7103b0908d13..272844746135 100644
--- a/sound/usb/caiaq/audio.c
+++ b/sound/usb/caiaq/audio.c
@@ -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);