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authorAxel Lin <axel.lin@ingics.com>2014-08-06 08:27:11 +0800
committerGuenter Roeck <linux@roeck-us.net>2014-08-05 19:44:42 -0700
commit970255b75d0b54e457091182a7ae3a188ac0c346 (patch)
treeb8a1309772eca7b66a1e729c87f3082557ffc085 /drivers/hwmon
parent5c570b9573ecabf3ffc9af7f03daa088f2466d7b (diff)
downloadlinux-970255b75d0b54e457091182a7ae3a188ac0c346.tar.bz2
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>
Diffstat (limited to 'drivers/hwmon')
-rw-r--r--drivers/hwmon/w83627hf.c3
1 files changed, 3 insertions, 0 deletions
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;