books about writing LKM's

[threadhead]

hello!

i want to go deeper into kernel hacking and LKM programming.
what is a good book to learn how to write your own device drivers/LKM's with enough sample code provided?

thanks

[bascule]

http://www.tldp.org/LDP/lkmpg/index.html

seems a good start :D

[threadhead]

thnx ;)