void snd_usb_set_pcm_ops(struct snd_pcm *pcm, int stream)
{
	snd_pcm_set_ops(pcm, stream,
			stream == SNDRV_PCM_STREAM_PLAYBACK ?
			&snd_usb_playback_ops : &snd_usb_capture_ops);
}
void snd_usb_set_pcm_ops(struct snd_pcm *pcm, int stream)
{
	snd_pcm_set_ops(pcm, stream,
			stream == SNDRV_PCM_STREAM_PLAYBACK ?
			&snd_usb_playback_ops : &snd_usb_capture_ops);
}