communicate with a driver from a kernel module

[mrjmrj]

I want to communicate with a driver (/dev device) from a kernel module. I have an application and some kernel modules associated with it. From the lowest KM I want to read and write to the driver. What should I do? I have read that writing and reading files from the KM is not a good choice. Is there any other way? Could I use the header files of the driver? If so, how?

[lisati]

Duplicate of http://ubuntuforums.org/showthread.php?t=2110727

Please do not start multiple threads for the same support question, it dilutes the community's ability to help.