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 <hdego...@redhat.com>
---
hw/ac97.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/hw/ac97.c b/hw/ac97.c
index a245c97..557f7b0 100644
--- a/hw/ac97.c
+++ b/hw/ac97.c
@@ -600,7 +600,7 @@ static void nam_writew (void *opaque, uint32_t addr,
uint32_t val)
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;
--
1.7.10
