From d05bca439d503cdedb748cd50de3228e261bada0 Mon Sep 17 00:00:00 2001
From: Peter Hurley <peter@hurleysoftware.com>
Date: Mon, 11 Mar 2013 16:44:22 -0400
Subject: [PATCH] --- yaml --- r: 364250 b: refs/heads/master c:
 a30737ab7d99f27810b254787e5e62a6c92cb355 h: refs/heads/master v: v3

---
 [refs]                    |  2 +-
 trunk/drivers/tty/n_tty.c | 24 ++++++++++++++----------
 2 files changed, 15 insertions(+), 11 deletions(-)

diff --git a/[refs] b/[refs]
index d51e453095fa..f0f962702c73 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 21622939fc452c7fb739464b8e49368c3ceaa0ee
+refs/heads/master: a30737ab7d99f27810b254787e5e62a6c92cb355
diff --git a/trunk/drivers/tty/n_tty.c b/trunk/drivers/tty/n_tty.c
index 16793eccc6ae..7e7f6514fb53 100644
--- a/trunk/drivers/tty/n_tty.c
+++ b/trunk/drivers/tty/n_tty.c
@@ -223,6 +223,18 @@ static void reset_buffer_flags(struct tty_struct *tty)
 	n_tty_set_room(tty);
 }
 
+static void n_tty_packet_mode_flush(struct tty_struct *tty)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&tty->ctrl_lock, flags);
+	if (tty->link->packet) {
+		tty->ctrl_status |= TIOCPKT_FLUSHREAD;
+		wake_up_interruptible(&tty->link->read_wait);
+	}
+	spin_unlock_irqrestore(&tty->ctrl_lock, flags);
+}
+
 /**
  *	n_tty_flush_buffer	-	clean input queue
  *	@tty:	terminal device
@@ -237,19 +249,11 @@ static void reset_buffer_flags(struct tty_struct *tty)
 
 static void n_tty_flush_buffer(struct tty_struct *tty)
 {
-	unsigned long flags;
 	/* clear everything and unthrottle the driver */
 	reset_buffer_flags(tty);
 
-	if (!tty->link)
-		return;
-
-	spin_lock_irqsave(&tty->ctrl_lock, flags);
-	if (tty->link->packet) {
-		tty->ctrl_status |= TIOCPKT_FLUSHREAD;
-		wake_up_interruptible(&tty->link->read_wait);
-	}
-	spin_unlock_irqrestore(&tty->ctrl_lock, flags);
+	if (tty->link)
+		n_tty_packet_mode_flush(tty);
 }
 
 /**