tty: add throttle/unthrottle helpers

Something Arjan suggested which allows us to clean up the code nicely

Signed-off-by: Alan Cox <alan@redhat.com>
Cc: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 1 insertions, 3 deletions

diff --git a/drivers/net/ppp_synctty.c b/drivers/net/ppp_synctty.c
index 48ed5fdbfe18..b8f0369a71e7 100644
--- a/drivers/net/ppp_synctty.c
+++ b/drivers/net/ppp_synctty.c
@@ -401,9 +401,7 @@ ppp_sync_receive(struct tty_struct *tty, const unsigned char *buf,
         if (!skb_queue_empty(&ap->rqueue))
                 tasklet_schedule(&ap->tsk);
         sp_put(ap);
-        if (test_and_clear_bit(TTY_THROTTLED, &tty->flags)
-            && tty->ops->unthrottle)
-                tty->ops->unthrottle(tty);
+        tty_unthrottle(tty);
 }
 
 static void