Bluetooth: mgmt: Allow class of device changes while powered off

This patch makes it possible to set the class when powered off. When
powering on the right class of device value will be automatically
writen to the controller.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>

net/bluetooth/mgmt.c

@@ -1456,15 +1456,15 @@ static int set_dev_class(struct sock *sk, u16 index, void *data, u16 len)
 
 	hci_dev_lock(hdev);
 
+	hdev->major_class = cp->major;
+	hdev->minor_class = cp->minor;
+
 	if (!hdev_is_powered(hdev)) {
-		err = cmd_status(sk, index, MGMT_OP_SET_DEV_CLASS,
-						MGMT_STATUS_NOT_POWERED);
+		err = cmd_complete(sk, index, MGMT_OP_SET_DEV_CLASS, 0,
+							hdev->dev_class, 3);
 		goto unlock;
 	}
 
-	hdev->major_class = cp->major;
-	hdev->minor_class = cp->minor;
-
 	if (test_and_clear_bit(HCI_SERVICE_CACHE, &hdev->dev_flags)) {
 		hci_dev_unlock(hdev);
 		cancel_delayed_work_sync(&hdev->service_cache);