Exar xr21v141x UART driver ========================== The source code here comes from the Exar website, downloaded on 2 June 2014. It has been updated to work with the Linux kernel tty API. I have tested it on 3.13. To build, ensure you have kernel headers and a compiler installed: $ sudo apt-get install linux-headers-generic build-essential $ cd exar-uart-driver $ make $ sudo make modules_install You will need to complete the make && sudo make install step whenever your kernel is updated. If you need debian packages, refer to README.Debian