digital_playback_ops 842 sound/pci/echoaudio/echoaudio.c static const struct snd_pcm_ops digital_playback_ops = { digital_playback_ops 956 sound/pci/echoaudio/echoaudio.c snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &digital_playback_ops);