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>

2 files changed, 2 insertions, 6 deletions

diff --git a/drivers/net/hamradio/6pack.c b/drivers/net/hamradio/6pack.c
index 82a36266dfc9..9d5721287d6f 100644
--- a/drivers/net/hamradio/6pack.c
+++ b/drivers/net/hamradio/6pack.c
@@ -491,9 +491,7 @@ static void sixpack_receive_buf(struct tty_struct *tty,
         sixpack_decode(sp, buf, count1);
 
         sp_put(sp);
-        if (test_and_clear_bit(TTY_THROTTLED, &tty->flags)
-            && tty->ops->unthrottle)
-                tty->ops->unthrottle(tty);
+        tty_unthrottle(tty);
 }
 
 /*
diff --git a/drivers/net/hamradio/mkiss.c b/drivers/net/hamradio/mkiss.c
index ebcc5adee7cc..65166035aca0 100644
--- a/drivers/net/hamradio/mkiss.c
+++ b/drivers/net/hamradio/mkiss.c
@@ -936,9 +936,7 @@ static void mkiss_receive_buf(struct tty_struct *tty, const unsigned char *cp,
         }
 
         mkiss_put(ax);
-        if (test_and_clear_bit(TTY_THROTTLED, &tty->flags)
-            && tty->ops->unthrottle)
-                tty->ops->unthrottle(tty);
+        tty_unthrottle(tty);
 }
 
 /*