HID: uclogic: Do not initialize non-USB devices

Do not try to initialize UC-Logic tablets if the underlying device is
not a USB device, but e.g. a uhid device.
Signed-off-by: Nikolai Kondrashov <spbnick@gmail.com>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>

drivers/hid/hid-uclogic-params.c

@@ -826,7 +826,8 @@ static int uclogic_params_huion_init(struct uclogic_params *params,
  *		uclogic_params_cleanup()). Not modified in case of error.
  *		Cannot be NULL.
  * @hdev:	The HID device of the tablet interface to initialize and get
- *		parameters from. Cannot be NULL.
+ *		parameters from. Cannot be NULL. Must be using the USB low-level
+ *		driver, i.e. be an actual USB tablet.
  *
  * Returns:
  *	Zero, if successful. A negative errno code on error.
@@ -844,7 +845,8 @@ int uclogic_params_init(struct uclogic_params *params,
 	struct uclogic_params p = {0, };
 
 	/* Check arguments */
-	if (params == NULL || hdev == NULL) {
+	if (params == NULL || hdev == NULL ||
+	    !hid_is_using_ll_driver(hdev, &usb_hid_driver)) {
 		rc = -EINVAL;
 		goto cleanup;
 	}