diff options
| -rw-r--r-- | drivers/tty/tty_ldisc.c | 31 |
1 files changed, 6 insertions, 25 deletions
diff --git a/drivers/tty/tty_ldisc.c b/drivers/tty/tty_ldisc.c index 5ee0b2be7d72..f26ef1ace4f1 100644 --- a/drivers/tty/tty_ldisc.c +++ b/drivers/tty/tty_ldisc.c @@ -228,24 +228,6 @@ const struct file_operations tty_ldiscs_proc_fops = { }; /** - * tty_ldisc_assign - set ldisc on a tty - * @tty: tty to assign - * @ld: line discipline - * - * Install an instance of a line discipline into a tty structure. The - * ldisc must have a reference count above zero to ensure it remains. - * The tty instance refcount starts at zero. - * - * Locking: - * Caller must hold references - */ - -static void tty_ldisc_assign(struct tty_struct *tty, struct tty_ldisc *ld) -{ - tty->ldisc = ld; -} - -/** * tty_ldisc_try - internal helper * @tty: the tty * @@ -488,7 +470,7 @@ static void tty_ldisc_restore(struct tty_struct *tty, struct tty_ldisc *old) /* There is an outstanding reference here so this is safe */ old = tty_ldisc_get(old->ops->num); WARN_ON(IS_ERR(old)); - tty_ldisc_assign(tty, old); + tty->ldisc = old; tty_set_termios_ldisc(tty, old->ops->num); if (tty_ldisc_open(tty, old) < 0) { tty_ldisc_put(old); @@ -496,7 +478,7 @@ static void tty_ldisc_restore(struct tty_struct *tty, struct tty_ldisc *old) new_ldisc = tty_ldisc_get(N_TTY); if (IS_ERR(new_ldisc)) panic("n_tty: get"); - tty_ldisc_assign(tty, new_ldisc); + tty->ldisc = new_ldisc; tty_set_termios_ldisc(tty, N_TTY); r = tty_ldisc_open(tty, new_ldisc); if (r < 0) @@ -725,7 +707,7 @@ int tty_set_ldisc(struct tty_struct *tty, int ldisc) tty_ldisc_close(tty, o_ldisc); /* Now set up the new line discipline. */ - tty_ldisc_assign(tty, new_ldisc); + tty->ldisc = new_ldisc; tty_set_termios_ldisc(tty, ldisc); retval = tty_ldisc_open(tty, new_ldisc); @@ -799,11 +781,10 @@ static int tty_ldisc_reinit(struct tty_struct *tty, int ldisc) tty_ldisc_close(tty, tty->ldisc); tty_ldisc_put(tty->ldisc); - tty->ldisc = NULL; /* * Switch the line discipline back */ - tty_ldisc_assign(tty, ld); + tty->ldisc = ld; tty_set_termios_ldisc(tty, ldisc); return 0; @@ -986,7 +967,7 @@ void tty_ldisc_init(struct tty_struct *tty) struct tty_ldisc *ld = tty_ldisc_get(N_TTY); if (IS_ERR(ld)) panic("n_tty: init_tty"); - tty_ldisc_assign(tty, ld); + tty->ldisc = ld; } /** @@ -999,7 +980,7 @@ void tty_ldisc_init(struct tty_struct *tty) void tty_ldisc_deinit(struct tty_struct *tty) { tty_ldisc_put(tty->ldisc); - tty_ldisc_assign(tty, NULL); + tty->ldisc = NULL; } void tty_ldisc_begin(void) |