snd_emu10k1_voice_intr_disable
void snd_emu10k1_voice_intr_disable(struct snd_emu10k1 *emu, unsigned int voicenum);
snd_emu10k1_voice_intr_disable(emu, epcm->extra->number);
snd_emu10k1_voice_intr_disable(emu, voice);