How and why to work with the Linux kernel community
What about other FOSS OS's


There are quite a number of other non-Linux FOSS OSs, among them
FreeBSD, OpenBSD, NetBSD, ...
Those are not as small as you might think
FreeBSD often used for internet severs (web, mail, ...)
OpenBSD often used in high-security environments
NetBSD a little more prominent in embedded
So how does this affect a HW manufacturer
In case the OS is used in a targetted market, developing a driver might make sense
In most cases, open docuentation is all those projects need
In other cases, dual-licensing a driver (GPL+BSD) makes sense so *BSD can use code from the Linux driver