linux kernel character driver
I am a newbie in Linux kernel and I have a Debian 2.6.4 installed. I have compiled hello.c module, and I can install and uninstall the driver. I then create a simple character driver. I can compile it, load the module and remove the module and I can see the debug message using printk. I can write to the module using echo and then read it using cat. The problem is that open, release, read, and write functions are not called. I cannot see any debug message from these functions. Any pointer? Thanks in advance.