NM_AUDIO_MUTE_REG  522 sound/pci/nm256/nm256.c 	snd_nm256_writew(chip, NM_AUDIO_MUTE_REG, 0x0);
NM_AUDIO_MUTE_REG  545 sound/pci/nm256/nm256.c 	snd_nm256_writew(chip, NM_AUDIO_MUTE_REG,