StarTech (Rayon) RS422/485 Serial Driver

Working on Linux kernel serial drivers is not something I normally do – or have ever actually done before – but I found myself needing to update a kernel module last month to compile under the 2.6.26 serial driver model. It turned out to be a success, so I’ve decided to share it with anyone else who happens to want to run one of these cards on Linux:

This patched kernel module driver is being used successfully on a StarTech PCI2S422ISO. This driver should work for any of the PCIPORT family of cards: P584, P588, P514, P518, P220, P232, P422, P984, P924, P985. This card may also be known as a “rayon” card.