hwmon: (w83793) 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>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/hwmon/w83793.c b/drivers/hwmon/w83793.c
index 9d63d71214ca..816aa6caf5d5 100644
--- a/drivers/hwmon/w83793.c
+++ b/drivers/hwmon/w83793.c
@@ -353,6 +353,9 @@ store_vrm(struct device *dev, struct device_attribute *attr,
         if (err)
                 return err;
 
+        if (val > 255)
+                return -EINVAL;
+
         data->vrm = val;
         return count;
 }