diff options
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/tty_io.c | 14 | ||||
| -rw-r--r-- | drivers/tty/tty_ldisc.c | 13 |
2 files changed, 27 insertions, 0 deletions
diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c index 026bf2f6f5f..f5dd23520fe 100644 --- a/drivers/tty/tty_io.c +++ b/drivers/tty/tty_io.c @@ -2887,6 +2887,20 @@ void initialize_tty_struct(struct tty_struct *tty, } /** + * deinitialize_tty_struct + * @tty: tty to deinitialize + * + * This subroutine deinitializes a tty structure that has been newly + * allocated but tty_release cannot be called on that yet. + * + * Locking: none - tty in question must not be exposed at this point + */ +void deinitialize_tty_struct(struct tty_struct *tty) +{ + tty_ldisc_deinit(tty); +} + +/** * tty_put_char - write one character to a tty * @tty: tty * @ch: character diff --git a/drivers/tty/tty_ldisc.c b/drivers/tty/tty_ldisc.c index e19e1364711..5d01d32e2cf 100644 --- a/drivers/tty/tty_ldisc.c +++ b/drivers/tty/tty_ldisc.c @@ -956,6 +956,19 @@ void tty_ldisc_init(struct tty_struct *tty) tty_ldisc_assign(tty, ld); } +/** + * tty_ldisc_init - ldisc cleanup for new tty + * @tty: tty that was allocated recently + * + * The tty structure must not becompletely set up (tty_ldisc_setup) when + * this call is made. + */ +void tty_ldisc_deinit(struct tty_struct *tty) +{ + put_ldisc(tty->ldisc); + tty_ldisc_assign(tty, NULL); +} + void tty_ldisc_begin(void) { /* Setup the default TTY line discipline. */ |