snd_seq_system_info  638 include/sound/asequencer.h #define SNDRV_SEQ_IOCTL_SYSTEM_INFO	_IOWR('S', 0x02, struct snd_seq_system_info)
snd_seq_system_info 1112 sound/core/seq/seq_clientmgr.c 	struct snd_seq_system_info info;