tty: add throttle/unthrottle helpers

[linux-2.6-omap-h63xx.git] / drivers / char / n_tty.c

diff --git a/drivers/char/n_tty.c b/drivers/char/n_tty.c
index abc93a93dcdd741202c9a8f59516046ad10ab0c8..19105ec203f7afe611edfdc10c99bf50741ccecc 100644 (file)
--- a/drivers/char/n_tty.c
+++ b/drivers/char/n_tty.c
@@ -147,10 +147,8 @@ static void put_tty_queue(unsigned char c, struct tty_struct *tty)
 
 static void check_unthrottle(struct tty_struct *tty)
 {
-       if (tty->count &&
-           test_and_clear_bit(TTY_THROTTLED, &tty->flags) &&
-           tty->ops->unthrottle)
-               tty->ops->unthrottle(tty);
+       if (tty->count)
+               tty_unthrottle(tty);
 }
 
 /**
@@ -982,12 +980,8 @@ static void n_tty_receive_buf(struct tty_struct *tty, const unsigned char *cp,
         * mode.  We don't want to throttle the driver if we're in
         * canonical mode and don't have a newline yet!
         */
-       if (tty->receive_room < TTY_THRESHOLD_THROTTLE) {
-               /* check TTY_THROTTLED first so it indicates our state */
-               if (!test_and_set_bit(TTY_THROTTLED, &tty->flags) &&
-                   tty->ops->throttle)
-                       tty->ops->throttle(tty);
-       }
+       if (tty->receive_room < TTY_THRESHOLD_THROTTLE)
+               tty_throttle(tty);
 }
 
 int is_ignored(int sig)