[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/usb/serial/mos7720.c

@@ -269,18 +269,8 @@ static void mos7720_bulk_out_data_callback(struct urb *urb)
 
 	tty = mos7720_port->port->tty;
 
-	if (tty && mos7720_port->open) {
-		/* let the tty driver wakeup if it has a special *
-		 * write_wakeup function */
-		if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
-		     tty->ldisc.write_wakeup)
-			(tty->ldisc.write_wakeup)(tty);
-
-		/* tell the tty driver that something has changed */
-		wake_up_interruptible(&tty->write_wait);
-	}
-
-	/* schedule_work(&mos7720_port->port->work); */
+	if (tty && mos7720_port->open)
+		tty_wakeup(tty);
 }
 
 /*