Hi all Thanks to erik i compiled the module with -O2 option and the unresolved errs vanished but when i try to insmod it gives error init_module no such device why is that and it suggests that IO or IRQ can be invalid which i dont think is possible as the driver requests irq to the pci driver,so its most likely that the irq is invalid .. thanks in advance nka - Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ IRC Channel: irc.openprojects.net / #kernelnewbies Web Page: http://www.kernelnewbies.org/