From: Ricardo Ribalda <ricardo.ribalda@gmail.com>
Date: Wed, 24 May 2017 01:53:45 +0000 (-0400)
Subject: i2c: piix4: Fix request_region size
X-Git-Tag: release-20171130_firefly~4^2~100^2~1^2~3^2~32
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=ee0cd47799dd63c38e3ae842be6693b53b315735;p=firefly-linux-kernel-4.4.55.git

i2c: piix4: Fix request_region size


[ Upstream commit f43128c75202f29ee71aa83e6c320a911137c189 ]

Since '701dc207bf55 ("i2c: piix4: Avoid race conditions with IMC")' we
are using the SMBSLVCNT register at offset 0x8. We need to request it.

Fixes: 701dc207bf55 ("i2c: piix4: Avoid race conditions with IMC")
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/i2c/busses/i2c-piix4.c b/drivers/i2c/busses/i2c-piix4.c
index 630bce68bf38..b61db9db3ca5 100644
--- a/drivers/i2c/busses/i2c-piix4.c
+++ b/drivers/i2c/busses/i2c-piix4.c
@@ -54,7 +54,7 @@
 #define SMBSLVDAT	(0xC + piix4_smba)
 
 /* count for request_region */
-#define SMBIOSIZE	8
+#define SMBIOSIZE	9
 
 /* PCI Address Constants */
 #define SMBBA		0x090