From 07d662d8f4e86f083b30b4f5ce04c0f5c3a5f5cd Mon Sep 17 00:00:00 2001
From: Theo de Raadt <deraadt@cvs.openbsd.org>
Date: Thu, 27 Jul 2000 16:34:46 +0000
Subject: if avoiding ac97_read because of AC97_HOST_DONT_READ, still permit
 access to AC97_REG_VENDOR* and AC97_REG_RESET

---
 sys/dev/ic/ac97.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/sys/dev/ic/ac97.c b/sys/dev/ic/ac97.c
index 8776c1f983f..aa7236a77a8 100644
--- a/sys/dev/ic/ac97.c
+++ b/sys/dev/ic/ac97.c
@@ -1,4 +1,4 @@
-/*      $OpenBSD: ac97.c,v 1.9 2000/07/20 21:36:26 deraadt Exp $ */
+/*      $OpenBSD: ac97.c,v 1.10 2000/07/27 16:34:45 deraadt Exp $ */
 
 /*
  * Copyright (c) 1999, 2000 Constantine Sapuntzakis
@@ -387,7 +387,9 @@ ac97_read(as, reg, val)
 {
 	int error;
 	
-	if (as->host_flags & AC97_HOST_DONT_READ) {
+	if ((as->host_flags & AC97_HOST_DONT_READ) &&
+	    (reg != AC97_REG_VENDOR_ID1 && reg != AC97_REG_VENDOR_ID2 &&
+	    reg != AC97_REG_RESET)) {
 		*val = as->shadow_reg[reg >> 1];
 		return;
 	}
-- 
cgit v1.2.3