snd_dm_fm_voice 102 include/sound/asound_fm.h #define SNDRV_DM_FM_IOCTL_SET_VOICE _IOW('H', 0x23, struct snd_dm_fm_voice) snd_dm_fm_voice 134 sound/drivers/opl3/opl3_synth.c struct snd_dm_fm_voice voice; snd_dm_fm_voice 135 sound/drivers/opl3/opl3_synth.c if (copy_from_user(&voice, argp, sizeof(struct snd_dm_fm_voice)))