I am looking at the rs_timer() function in drivers/char/serial.c. Can this function be used for the polled method of the serial driver? How do I start off for having a polled method? Are there any good docs for linux serial driver? Manoj - 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/