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authorHans de Goede <hdegoede@redhat.com>2012-05-07 09:24:38 +0200
committermalc <av1474@comtv.ru>2012-05-07 16:31:40 +0400
commit847c25d01cbe8e4fe457a7426f82daaaf3287aae (patch)
treecd6911a51603bf22d28d93c1b6fcf87674a977d6 /hw/ac97.c
parent7873bfb866c89f9e6eab28b14d0c2007b361150c (diff)
hw/ac97: Mask out the EAPD bit on Powerdown Ctrl/Stat writes
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>
Diffstat (limited to 'hw/ac97.c')
-rw-r--r--hw/ac97.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/hw/ac97.c b/hw/ac97.c
index b009257434..e791b9d3e6 100644
--- a/hw/ac97.c
+++ b/hw/ac97.c
@@ -603,7 +603,7 @@ 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;