diff options
| -rw-r--r-- | drivers/tty/n_tty.c | 24 |
1 files changed, 14 insertions, 10 deletions
diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c index 16793eccc6ae..7e7f6514fb53 100644 --- a/drivers/tty/n_tty.c +++ b/drivers/tty/n_tty.c @@ -223,6 +223,18 @@ static void reset_buffer_flags(struct tty_struct *tty) n_tty_set_room(tty); } +static void n_tty_packet_mode_flush(struct tty_struct *tty) +{ + unsigned long flags; + + spin_lock_irqsave(&tty->ctrl_lock, flags); + if (tty->link->packet) { + tty->ctrl_status |= TIOCPKT_FLUSHREAD; + wake_up_interruptible(&tty->link->read_wait); + } + spin_unlock_irqrestore(&tty->ctrl_lock, flags); +} + /** * n_tty_flush_buffer - clean input queue * @tty: terminal device @@ -237,19 +249,11 @@ static void reset_buffer_flags(struct tty_struct *tty) static void n_tty_flush_buffer(struct tty_struct *tty) { - unsigned long flags; /* clear everything and unthrottle the driver */ reset_buffer_flags(tty); - if (!tty->link) - return; - - spin_lock_irqsave(&tty->ctrl_lock, flags); - if (tty->link->packet) { - tty->ctrl_status |= TIOCPKT_FLUSHREAD; - wake_up_interruptible(&tty->link->read_wait); - } - spin_unlock_irqrestore(&tty->ctrl_lock, flags); + if (tty->link) + n_tty_packet_mode_flush(tty); } /** |