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Diffstat (limited to 'drivers/tty/tty_port.c')
| -rw-r--r-- | drivers/tty/tty_port.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/tty/tty_port.c b/drivers/tty/tty_port.c index 8bb757c62ee2..7f38eeaafac3 100644 --- a/drivers/tty/tty_port.c +++ b/drivers/tty/tty_port.c @@ -233,6 +233,23 @@ void tty_port_hangup(struct tty_port *port) EXPORT_SYMBOL(tty_port_hangup); /** + * tty_port_tty_hangup - helper to hang up a tty + * + * @port: tty port + * @check_clocal: hang only ttys with CLOCAL unset? + */ +void tty_port_tty_hangup(struct tty_port *port, bool check_clocal) +{ + struct tty_struct *tty = tty_port_tty_get(port); + + if (tty && (!check_clocal || !C_CLOCAL(tty))) { + tty_hangup(tty); + tty_kref_put(tty); + } +} +EXPORT_SYMBOL_GPL(tty_port_tty_hangup); + +/** * tty_port_tty_wakeup - helper to wake up a tty * * @port: tty port |