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[5/5] hw/ac97: Mask out the EAPD bit on Powerdown Ctrl/Stat writes

Message ID 1334919842-14610-5-git-send-email-hdegoede@redhat.com
State New
Headers show

Commit Message

Hans de Goede April 20, 2012, 11:04 a.m. UTC 
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>
---
 hw/ac97.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

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;