From 4bab48979630e7dd2fec76f6c160ed9333547bfe Mon Sep 17 00:00:00 2001
From: Jean Delvare <khali@linux-fr.org>
Date: Sat, 22 Apr 2006 18:06:49 +0000
Subject: [PATCH] Reset the PEC bit after every transaction. This partly
 reverts the previous change. This is needed by some BIOSes at reboot and
 resume time.

git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@3290 7894878c-1315-0410-8ee3-d5d059ff63e0
---
 kernel/busses/i2c-i801.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/kernel/busses/i2c-i801.c b/kernel/busses/i2c-i801.c
index eea020b9..4fc5e385 100644
--- a/kernel/busses/i2c-i801.c
+++ b/kernel/busses/i2c-i801.c
@@ -537,6 +537,11 @@ static s32 i801_access(struct i2c_adapter * adap, u16 addr,
 		ret = i801_transaction();
 	}
 
+	/* Some BIOSes don't like it when PEC is enabled at reboot or resume
+	   time, so we forcibly disable it after every transaction. */
+	if (hwpec)
+		outb_p(0, SMBAUXCTL);
+
 	if(block)
 		return ret;
 	if(ret)