SNDRV_GF1_HANDLER_VOICE
#define SNDRV_GF1_HANDLER_ALL (0xffff0000&~SNDRV_GF1_HANDLER_VOICE)
snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_VOICE | voice->number);
snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_VOICE | i);
if (what & SNDRV_GF1_HANDLER_VOICE) {