My question is:

Anyone know of a howto of some sort (or perhaps any instructions) for creating a kernel module to add support for a particular device. I need to get support for the PATA_IT8213 hardware.

Supplementary information:

I've read http://wiki.centos.org/HowTos/BuildingKernelModules and http://www.kerneldrivers.org/RedHatKernelModulePackages. However, it seems the underlying assumption for these two HOWTOs is that you have separate source code for the modules.

Support for the PATA_IT8213 is already in the kernel. However, the stock rhel kernel does not support it, even as a module. I know I could simply rebuild the source RPM with modified kernel config files, but that feels less than satisfactory since I'm not forced to maintain my own kernel module if I decide to upgrade.

Any suggestions?