UNKNOWN_DEV 364 drivers/tty/serial/8250/8250_pnp.c { "PNPCXXX", UNKNOWN_DEV }, UNKNOWN_DEV 366 drivers/tty/serial/8250/8250_pnp.c { "PNPDXXX", UNKNOWN_DEV }, UNKNOWN_DEV 442 drivers/tty/serial/8250/8250_pnp.c if (flags & UNKNOWN_DEV) {