n_tty: Move n_tty_write_wakeup() to avoid forward declaration

Prepare to special case pty flow control; avoid forward declaration.
Signed-off-by: NPeter Hurley <peter@hurleysoftware.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/tty/n_tty.c

@@ -214,6 +214,21 @@ static ssize_t chars_in_buffer(struct tty_struct *tty)
 	return n;
 }
 
+/**
+ *	n_tty_write_wakeup	-	asynchronous I/O notifier
+ *	@tty: tty device
+ *
+ *	Required for the ptys, serial driver etc. since processes
+ *	that attach themselves to the master and rely on ASYNC
+ *	IO must be woken up
+ */
+
+static void n_tty_write_wakeup(struct tty_struct *tty)
+{
+	if (tty->fasync && test_and_clear_bit(TTY_DO_WRITE_WAKEUP, &tty->flags))
+		kill_fasync(&tty->fasync, SIGIO, POLL_OUT);
+}
+
 static inline void n_tty_check_throttle(struct tty_struct *tty)
 {
 	/*
@@ -1458,22 +1473,6 @@ static inline void n_tty_receive_char(struct tty_struct *tty, unsigned char c)
 	put_tty_queue(c, ldata);
 }
 
-
-/**
- *	n_tty_write_wakeup	-	asynchronous I/O notifier
- *	@tty: tty device
- *
- *	Required for the ptys, serial driver etc. since processes
- *	that attach themselves to the master and rely on ASYNC
- *	IO must be woken up
- */
-
-static void n_tty_write_wakeup(struct tty_struct *tty)
-{
-	if (tty->fasync && test_and_clear_bit(TTY_DO_WRITE_WAKEUP, &tty->flags))
-		kill_fasync(&tty->fasync, SIGIO, POLL_OUT);
-}
-
 /**
  *	n_tty_receive_buf	-	data receive
  *	@tty: terminal device