The Linux AC97 driver tests this bit to decide wether or not to show
an External amplifier toggle control.
This patch was also tested with a Windows XP guest without any issues.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: malc <av1474@comtv.ru>
mixer_reset (s);
break;
case AC97_Powerdown_Ctrl_Stat:
- val &= ~0xf;
+ val &= ~0x800f;
val |= mixer_load (s, index) & 0xf;
mixer_store (s, index, val);
break;