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>

diff --git a/drivers/hwmon/w83627hf.c b/drivers/hwmon/w83627hf.c
index c1726be3654c156ede9bdb965bb04e1d2ad6c926..2f55973a8c4c37989750905d1fd2b209b0bbd902 100644 (file)
--- 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;