taglinefilesource code
canon_change183drivers/char/tty_ioctl.cint canon_change;
canon_change185drivers/char/tty_ioctl.ccanon_change = (old_termios.c_lflag ^ termios->c_lflag) & ICANON;
canon_change188drivers/char/tty_ioctl.cif (canon_change) {
canon_change195drivers/char/tty_ioctl.cif (canon_change && !L_ICANON(tty) && !EMPTY(&tty->secondary))