snd_pcm_info      500 include/sound/pcm.h int snd_pcm_info(struct snd_pcm_substream *substream, struct snd_pcm_info *info);
snd_pcm_info      502 include/sound/pcm.h 		      struct snd_pcm_info __user *info);
snd_pcm_info      524 include/uapi/sound/asound.h #define SNDRV_PCM_IOCTL_INFO		_IOR('A', 0x01, struct snd_pcm_info)
snd_pcm_info      932 include/uapi/sound/asound.h #define SNDRV_CTL_IOCTL_PCM_INFO	_IOWR('U', 0x31, struct snd_pcm_info)