[PATCH] USB: PATCH 16/19 Audit usb_register/usb_serial_register under divers/usb/serial

drivers/usb/serial/pl2303.c

@@ -768,10 +768,19 @@ static void pl2303_write_bulk_callback (struct urb *urb, struct pt_regs *regs)
 
 static int __init pl2303_init (void)
 {
-	usb_serial_register (&pl2303_device);
-	usb_register (&pl2303_driver);
+	int retval;
+	retval = usb_serial_register(&pl2303_device);
+	if (retval)
+		goto failed_usb_serial_register;
+	retval = usb_register(&pl2303_driver);
+	if (retval)
+		goto failed_usb_register;
 	info(DRIVER_DESC " " DRIVER_VERSION);
 	return 0;
+failed_usb_register:
+	usb_serial_deregister(&pl2303_device);
+failed_usb_serial_register:
+	return retval;
 }