How do you patch a driver?

[Foo Ji-Haw]

Hello Gheorghe,

I read with interest your success in getting your Adaptec 1210SA to work on FreeBSD. In your email you wrote that you downloaded patches to the driver code (and recompiled the kernel?) from http://people.freebsd.org/~sos/ATA

I downloaded the files myself, but am not sure how to proceed from there. Can you please give me some pointers on the next steps? 

Appreciate your help, thanks!