hwmon: (asb100) 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/asb100.c b/drivers/hwmon/asb100.c
index f96063680e584ff5f7cbb1d6dec8147a0592e186..272fcc837ecc0ad62e3b5dc3b40aefc4c8472bec 100644 (file)
--- a/drivers/hwmon/asb100.c
+++ b/drivers/hwmon/asb100.c
@@ -510,6 +510,10 @@ static ssize_t set_vrm(struct device *dev, struct device_attribute *attr,
        err = kstrtoul(buf, 10, &val);
        if (err)
                return err;
+
+       if (val > 255)
+               return -EINVAL;
+
        data->vrm = val;
        return count;
 }