From 847c25d01cbe8e4fe457a7426f82daaaf3287aae Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Mon, 7 May 2012 09:24:38 +0200 Subject: [PATCH] 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 Signed-off-by: malc --- hw/ac97.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/ac97.c b/hw/ac97.c index b009257..e791b9d 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; -- 2.7.4