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-rw-r--r--sound/usb/pcm.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c
index a11c8150af58..0e4eab96e23e 100644
--- a/sound/usb/pcm.c
+++ b/sound/usb/pcm.c
@@ -370,7 +370,7 @@ static int set_sync_ep_implicit_fb_quirk(struct snd_usb_substream *subs,
add_sync_ep_from_ifnum:
iface = usb_ifnum_to_if(dev, ifnum);
- if (!iface || iface->num_altsetting == 0)
+ if (!iface || iface->num_altsetting < 2)
return -EINVAL;
alts = &iface->altsetting[1];