snd_usb_endpoint_prepare
EXPORT_SYMBOL_GPL(snd_usb_endpoint_prepare);
int snd_usb_endpoint_prepare(struct snd_usb_audio *chip,
ret = snd_usb_endpoint_prepare(chip, subs->sync_endpoint);
ret = snd_usb_endpoint_prepare(chip, subs->data_endpoint);
ret = snd_usb_endpoint_prepare(chip, subs->sync_endpoint);
ret = snd_usb_endpoint_prepare(chip, subs->data_endpoint);