From: Jonas Jonsson <jonas@ludd.ltu.se>
Date: Fri, 17 Sep 2010 15:24:13 +0000 (+0200)
Subject: hwmon: (w83627ehf) Use proper exit sequence
X-Git-Tag: upstream/snapshot3+hdmi~12978^2~2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=022b75a3df2b5aeeb70c5d51bc1fe55722fdd759;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git

hwmon: (w83627ehf) Use proper exit sequence

According to the datasheet for Winbond W83627DHG the proper way to exit
the Extended Function Mode is to write 0xaa to the EFER(0x2e or 0x4e).

Signed-off-by: Jonas Jonsson <jonas@ludd.ltu.se>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
---

diff --git a/drivers/hwmon/w83627ehf.c b/drivers/hwmon/w83627ehf.c
index e96e69d..072c580 100644
--- a/drivers/hwmon/w83627ehf.c
+++ b/drivers/hwmon/w83627ehf.c
@@ -127,6 +127,7 @@ superio_enter(int ioreg)
 static inline void
 superio_exit(int ioreg)
 {
+	outb(0xaa, ioreg);
 	outb(0x02, ioreg);
 	outb(0x02, ioreg + 1);
 }