1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/hwmon/w83791d.c b/drivers/hwmon/w83791d.c
index cb3765fec98c..001df856913f 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;
 }