/* internal use only */
int soc_dpcm_be_digital_mute(struct snd_soc_pcm_runtime *fe, int mute);
-int soc_dpcm_debugfs_add(struct snd_soc_pcm_runtime *rtd);
+void soc_dpcm_debugfs_add(struct snd_soc_pcm_runtime *rtd);
int soc_dpcm_runtime_update(struct snd_soc_card *);
int dpcm_path_get(struct snd_soc_pcm_runtime *fe,