diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c index 75b96929f76c..51a8faf25ed8 100644 --- a/sound/usb/pcm.c +++ b/sound/usb/pcm.c @@ -456,6 +456,7 @@ static int set_sync_endpoint(struct snd_usb_substream *subs, } ep = get_endpoint(alts, 1)->bEndpointAddress; if (get_endpoint(alts, 0)->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE && + get_endpoint(alts, 0)->bSynchAddress != 0 && ((is_playback && ep != (unsigned int)(get_endpoint(alts, 0)->bSynchAddress | USB_DIR_IN)) || (!is_playback && ep != (unsigned int)(get_endpoint(alts, 0)->bSynchAddress & ~USB_DIR_IN)))) { dev_err(&dev->dev,