diff options
Diffstat (limited to 'drivers/tty/tty_buffer.c')
| -rw-r--r-- | drivers/tty/tty_buffer.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/tty/tty_buffer.c b/drivers/tty/tty_buffer.c index 143deb62467d..3605103fc1ac 100644 --- a/drivers/tty/tty_buffer.c +++ b/drivers/tty/tty_buffer.c @@ -202,14 +202,16 @@ static void tty_buffer_free(struct tty_port *port, struct tty_buffer *b) /** * tty_buffer_flush - flush full tty buffers * @tty: tty to flush + * @ld: optional ldisc ptr (must be referenced) * - * flush all the buffers containing receive data. + * flush all the buffers containing receive data. If ld != NULL, + * flush the ldisc input buffer. * * Locking: takes buffer lock to ensure single-threaded flip buffer * 'consumer' */ -void tty_buffer_flush(struct tty_struct *tty) +void tty_buffer_flush(struct tty_struct *tty, struct tty_ldisc *ld) { struct tty_port *port = tty->port; struct tty_bufhead *buf = &port->buf; @@ -223,6 +225,10 @@ void tty_buffer_flush(struct tty_struct *tty) buf->head = next; } buf->head->read = buf->head->commit; + + if (ld && ld->ops->flush_buffer) + ld->ops->flush_buffer(tty); + atomic_dec(&buf->priority); mutex_unlock(&buf->lock); } |