AC97_MUTE_MASK_MONO
unsigned short val, mask = AC97_MUTE_MASK_MONO;
mute_mask = AC97_MUTE_MASK_MONO;
| AC97_MUTE_MASK_MONO | 0x001e)
ac97->bus->ops->write(ac97, AC97_MASTER, AC97_MUTE_MASK_MONO);
if (snd_ac97_read(ac97, AC97_MASTER) != AC97_MUTE_MASK_MONO)
mask = AC97_MUTE_MASK_MONO;
mask = AC97_MUTE_MASK_MONO;