From: Axel Lin <axel.lin@ingics.com>
Date: Wed, 6 Aug 2014 00:27:11 +0000 (+0800)
Subject: hwmon: (w83627hf) Fix vrm write operation
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=970255b75d0b54e457091182a7ae3a188ac0c346;p=deliverable%2Flinux.git

hwmon: (w83627hf) Fix vrm write operation

vrm is an u8, so the written value needs to be limited to [0, 255].

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
---

diff --git a/drivers/hwmon/w83627hf.c b/drivers/hwmon/w83627hf.c
index c1726be3654c..2f55973a8c4c 100644
--- a/drivers/hwmon/w83627hf.c
+++ b/drivers/hwmon/w83627hf.c
@@ -820,6 +820,9 @@ store_vrm_reg(struct device *dev, struct device_attribute *attr, const char *buf
 	err = kstrtoul(buf, 10, &val);
 	if (err)
 		return err;
+
+	if (val > 255)
+		return -EINVAL;
 	data->vrm = val;
 
 	return count;