misc: (ds1682) replace obsolete simple_strtoull() with kstrtoull()

simple_strtoull() is obsolete, use the newer kstrtoull() instead.
Signed-off-by: Sebastien Bourdelin <sebastien.bourdelin@savoirfairelinux.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/misc/ds1682.c

@@ -85,7 +85,6 @@ static ssize_t ds1682_store(struct device *dev, struct device_attribute *attr,
 {
 	struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 	struct i2c_client *client = to_i2c_client(dev);
-	char *endp;
 	u64 val;
 	__le32 val_le;
 	int rc;
@@ -93,8 +92,8 @@ static ssize_t ds1682_store(struct device *dev, struct device_attribute *attr,
 	dev_dbg(dev, "ds1682_store() called on %s\n", attr->attr.name);
 
 	/* Decode input */
-	val = simple_strtoull(buf, &endp, 0);
-	if (buf == endp) {
+	rc = kstrtoull(buf, 0, &val);
+	if (rc < 0) {
 		dev_dbg(dev, "input string not a number\n");
 		return -EINVAL;
 	}