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authorAxel Lin <axel.lin@ingics.com>2014-08-06 08:28:02 +0800
committerGuenter Roeck <linux@roeck-us.net>2014-08-05 19:44:42 -0700
commitfe04f24b831cf384eda9798e1af642b96ca19d29 (patch)
treec17cc9942e42391da0cc6842878b321a439af691 /drivers/hwmon
parent970255b75d0b54e457091182a7ae3a188ac0c346 (diff)
hwmon: (w83791d) 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/w83791d.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/hwmon/w83791d.c b/drivers/hwmon/w83791d.c
index cb3765fec98..001df856913 100644
--- a/drivers/hwmon/w83791d.c
+++ b/drivers/hwmon/w83791d.c
@@ -1181,6 +1181,9 @@ static ssize_t store_vrm_reg(struct device *dev,
if (err)
return err;
+ if (val > 255)
+ return -EINVAL;
+
data->vrm = val;
return count;
}