Char device initialization

I'm trying to create a example char device. The example compiles fine, but when I try to "cat" I got "No such device or address". I have reviewed the code thousend times and can't see what I'm missing Here is the code -> http://pastebin.com/Td03U0fK The read method is not good, I know, but is never called. I use my own running kenrel to test, I know that is danger. I'm building a qemu enviroment to test this better. Here is uname -a: Linux archlinux 3.0-ARCH #1 SMP PREEMPT Fri Oct 7 11:35:34 CEST 2011 x86_64 Intel(R) Core(TM) i3 CPU M 370 @ 2.40GHz GenuineIntel GNU/Linux Any idea? Thanks