> What specifically are you trying to do with your /proc files? Basically, I need to issue text commands to the driver, receive text responses, and receive unsolicited text notifications. I had a feeling that the use of /proc for this purpose was not recommended. What alternative would you recommend? Can you point me to some example code? >> I'm using the debian sarge 2.4 kernel. > > 2.4? That's _very_ old. Please try the 2.6 kernel tree. I'd like to, but there are a number of constraints on the project, and it's imperative that we continue development on 2.4 in the short term. We will be moving to 2.6 within the next 6 months. Thanks for replying so quickly :) Alex.