check_tty_count 603 drivers/tty/tty_io.c check_tty_count(tty, "tty_hangup"); check_tty_count 1662 drivers/tty/tty_io.c check_tty_count(tty, __func__); check_tty_count 2045 drivers/tty/tty_io.c check_tty_count(tty, __func__);