Kernelnewbies.org [1]: a good Web site, mailing list and IRC channel dedicated to helping new Linux kernel programmers learn the various basic issues.
Driving Me Nuts “Device Classes”, /article/6872 [2]: Instead of reading a file, have your kernel module create a sysfs entry to communicate with user space. This article contains an example based on the 2.6.x i2c code.
Modules from This Article: ftp.ssc.com/pub/lj/listings/issue133/8110.tgz [3]
Links:
[1] http://Kernelnewbies.org
[2] http://www.linuxjournal.com/article/6872
[3] ftp://ftp.ssc.com/pub/lj/listings/issue133/8110.tgz