Hi,

Can any one give an idea on Linux device file modal?
I am facing a weird problem with one of the device driver. I compiled and build the driver successfully and got *.ko file. I used "mknod /dev/filename type major number" command and created a device file in /dev directory. then i wrote an application to open the device file and executed it.
I get an error message "No device or file with "filename". in /dev
can any one suggest where i am going wrong. I read about udev and hotplugging etc., but i want this device driver to load statically. when i try to open some other device driver like "Console" using the same application it is executing successfully.

thanks and regards
kiran

Post the exact command that you used. Then, after running it, post the contents of /proc/devices. Also read

> man mknod