A driver development kit provides a build environment, tools, driver samples, and documentation to support driver development for a particular operating system. Linux had always lacked a proper driver development kit. And anybody who intended to write a device driver had to do with sifting through tons of documentation and example source code that other operating systems provide for their developers.
Greg KH has posted at
LKML (
Linux
Kernel
Mailing
List) that a device driver kit has indeed been released for Linux which contain everything that a Linux driver author would need to create Linux drivers. Additionally, it also contain a copy of the O'Reilly book "
Linux Device Drivers". The device driver kit for Linux can be freely downloaded as an ISO image
here (92 MB).