snd_dm_fm_note    101 include/sound/asound_fm.h #define SNDRV_DM_FM_IOCTL_PLAY_NOTE	_IOW('H', 0x22, struct snd_dm_fm_note)
snd_dm_fm_note    123 sound/drivers/opl3/opl3_synth.c 			struct snd_dm_fm_note note;
snd_dm_fm_note    124 sound/drivers/opl3/opl3_synth.c 			if (copy_from_user(&note, argp, sizeof(struct snd_dm_fm_note)))