- snd_usX2Y_hwdep_pcm_shm_t *hwdep_pcm_shm;
- snd_usX2Y_substream_t *subs[4];
- snd_usX2Y_substream_t * volatile prepare_subs;
+ struct snd_usX2Y_hwdep_pcm_shm *hwdep_pcm_shm;
+ struct snd_usX2Y_substream *subs[4];
+ struct snd_usX2Y_substream * volatile prepare_subs;