|Currently I am able to register and unregister the device and the |application can call open, read and write BUT once I unregister the device |and then register again, I am not able to do open and write from the |application. Hi J, you should reformulate your question since its too generic. Have you ever take a look at the excellent "linux device drivers 2nd edition"? you can freely download and read from: http://www.xml.com/ldd/chapter/book/ take a look at the Chapter n.3. -- [Daniele] -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
