On Mon, Mar 14, 2016 at 01:28:31PM +0900, Daeseok Youn wrote: > For using tty_alloc_driver, SerialDriver has to be pointer type. Yes, but you aren't calling tty_alloc_driver, so this patch totally breaks the working code :( Please be more careful... greg k-h _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel