Hi serial_core maintainers, Looking at drivers/tty/serial/serial_core.c it appears TIOCSERCONFIG ioctl does not respect the UPF_FIXED_TYPE flag. Instead, it calls uart_do_autoconfig which unconditionally passes the UART_CONFIG_TYPE flag to the config_port call. -- Frank -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html