lpuart_driver 2615 drivers/tty/serial/fsl_lpuart.c static struct platform_driver lpuart_driver = { lpuart_driver 2632 drivers/tty/serial/fsl_lpuart.c ret = platform_driver_register(&lpuart_driver); lpuart_driver 2642 drivers/tty/serial/fsl_lpuart.c platform_driver_unregister(&lpuart_driver);