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Diffstat (limited to 'drivers/tty/tty_ldisc.c')
| -rw-r--r-- | drivers/tty/tty_ldisc.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/tty/tty_ldisc.c b/drivers/tty/tty_ldisc.c index c5782294e532..e96d1876bd62 100644 --- a/drivers/tty/tty_ldisc.c +++ b/drivers/tty/tty_ldisc.c @@ -64,7 +64,9 @@ static void put_ldisc(struct tty_ldisc *ld) return; } raw_spin_unlock_irqrestore(&tty_ldisc_lock, flags); - wake_up(&ld->wq_idle); + + if (waitqueue_active(&ld->wq_idle)) + wake_up(&ld->wq_idle); } /** |