[PATCH] Char: tty_wakeup cleanup

tty_wakeup cleanup

- remove wake_up_interruptible(&tty->write_wait) surrounding
  tty_wakup(tty);
- substitute tty->ldisc.write_wakeup(tty) + wake_up() by tty_wakeup(tty);

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Acked-by: Tilman Schmidt <tilman@imap.cc>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/tc/zs.c

@@ -626,10 +626,8 @@ static void do_softint(unsigned long private_)
 	if (!tty)
 		return;
 
-	if (test_and_clear_bit(RS_EVENT_WRITE_WAKEUP, &info->event)) {
+	if (test_and_clear_bit(RS_EVENT_WRITE_WAKEUP, &info->event))
 		tty_wakeup(tty);
-		wake_up_interruptible(&tty->write_wait);
-	}
 }
 
 static int zs_startup(struct dec_serial * info)