---

yaml
---
r: 243661
b: refs/heads/master
c: a5660b4
h: refs/heads/master
i:
  243659: c949413
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: d7c764c4c7b782c660b4600b0bff2e3509892a4d
+refs/heads/master: a5660b41af6a28f8004e70eb261e1202ad55c5e3

trunk/drivers/tty/n_tty.c

@@ -95,6 +95,7 @@ static void n_tty_set_room(struct tty_struct *tty)
 {
 	/* tty->read_cnt is not read locked ? */
 	int	left = N_TTY_BUF_SIZE - tty->read_cnt - 1;
+	int old_left;
 
 	/*
 	 * If we are doing input canonicalization, and there are no
@@ -104,7 +105,12 @@ static void n_tty_set_room(struct tty_struct *tty)
 	 */
 	if (left <= 0)
 		left = tty->icanon && !tty->canon_data;
+	old_left = tty->receive_room;
 	tty->receive_room = left;
+
+	/* Did this open up the receive buffer? We may need to flip */
+	if (left && !old_left)
+		schedule_work(&tty->buf.work);
 }
 
 static void put_tty_queue_nolock(unsigned char c, struct tty_struct *tty)

trunk/drivers/tty/tty_buffer.c

@@ -442,10 +442,8 @@ static void flush_to_ldisc(struct work_struct *work)
 			   line discipline as we want to empty the queue */
 			if (test_bit(TTY_FLUSHPENDING, &tty->flags))
 				break;
-			if (!tty->receive_room || seen_tail) {
-				schedule_work(&tty->buf.work);
+			if (!tty->receive_room || seen_tail)
 				break;
-			}
 			if (count > tty->receive_room)
 				count = tty->receive_room;
 			char_buf = head->char_buf_ptr + head->read;