diff options
| author | Peter Hurley <peter@hurleysoftware.com> | 2013-03-11 16:44:22 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-03-18 16:32:46 -0700 |
| commit | a30737ab7d99f27810b254787e5e62a6c92cb355 (patch) | |
| tree | 4164294bf2b194f917d0524485f8aebb413ba8c5 /drivers/tty/n_tty.c | |
| parent | 21622939fc452c7fb739464b8e49368c3ceaa0ee (diff) | |
| download | linux-a30737ab7d99f27810b254787e5e62a6c92cb355.tar.bz2 | |
n_tty: Factor packet mode status change for reuse
Factor the packet mode status change from n_tty_flush_buffer
for use by follow-on patch.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/n_tty.c')
| -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); } /** |