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>

diff --git a/drivers/hwmon/w83793.c b/drivers/hwmon/w83793.c
index 9d63d71214cade1cddad0b8bfbbbbae726c4dda5..816aa6caf5d553ef2538eb9ebdcddab40f96c588 100644 (file)
--- 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;
 }