diff options
Diffstat (limited to 'drivers/tty/tty_ldisc.c')
| -rw-r--r-- | drivers/tty/tty_ldisc.c | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/drivers/tty/tty_ldisc.c b/drivers/tty/tty_ldisc.c index 9aff04bee4cd..d02deeb5e584 100644 --- a/drivers/tty/tty_ldisc.c +++ b/drivers/tty/tty_ldisc.c @@ -87,19 +87,16 @@ EXPORT_SYMBOL(tty_register_ldisc); * takes tty_ldiscs_lock to guard against ldisc races */ -int tty_unregister_ldisc(int disc) +int tty_unregister_ldisc(struct tty_ldisc_ops *ldisc) { unsigned long flags; int ret = 0; - if (disc < N_TTY || disc >= NR_LDISCS) - return -EINVAL; - raw_spin_lock_irqsave(&tty_ldiscs_lock, flags); - if (tty_ldiscs[disc]->refcount) + if (tty_ldiscs[ldisc->num]->refcount) ret = -EBUSY; else - tty_ldiscs[disc] = NULL; + tty_ldiscs[ldisc->num] = NULL; raw_spin_unlock_irqrestore(&tty_ldiscs_lock, flags); return ret; |