On Thu, Apr 12, 2012 at 15:17:58, Alan Cox wrote: > > > > I will have a look at this and add the lock if necessary. > > > > > > At the very least you need reference counts held on the tty struct and to allow for the tty having vanished under you. > > > > > > > I am planning to add "tty->termios_mutex" lock. Any comments ? > > Explain how this will help. You need a reference count to the tty itself. > I have gone through the serial driver, still I am not able to figure out the requirement of tty reference count here. Correct me if I am wrong. As per my understanding, tty count keeps the count of tty_open and tty_release, that is how many open and close happened on the tty device file(/dev/ttyS*). The requirement here is a tty count check, if it is greater than zero then only it should proceed for further execution. Kindly elaborate more on the same if it's not correct. > > Alan > -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
