Hi Peter, thanks for your reply. >> poll_wait(file, &tty->read_wait, wait); >> poll_wait(file, &tty->write_wait, wait); >> - if (input_available_p(tty, 1)) >> - mask |= POLLIN | POLLRDNORM; >> if (tty->packet && tty->link->ctrl_status) >> mask |= POLLPRI | POLLIN | POLLRDNORM; >> if (test_bit(TTY_OTHER_CLOSED, &tty->flags)) >> mask |= POLLHUP; >> if (tty_hung_up_p(file)) >> mask |= POLLHUP; >> + if (mask & POLLHUP) >> + tty_flush_to_ldisc(tty); > > This isn't necessary for the tty_hung_up_p() case because, when the > poll() is woken from hangup, the read buffer has already been flushed (ie., > cleared). > > Plus, this waits even if input_available_p() would already return true. > Let me work on a patch for stable along the lines you suggest. Francesco -- 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
