Symbol: TTY_HUPPING
drivers/tty/n_tty.c
2148
if (test_bit(TTY_HUPPING, &tty->flags))
drivers/tty/tty_io.c
594
set_bit(TTY_HUPPING, &tty->flags);
drivers/tty/tty_io.c
651
clear_bit(TTY_HUPPING, &tty->flags);