From: Peter Hurley <peter@hurleysoftware.com>
Date: Tue, 5 Feb 2013 21:08:50 +0000 (-0500)
Subject: pty: Remove redundant itty reset
X-Git-Tag: firefly_0821_release~3680^2~673^2~119
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=19ffd68f816878aed456d5e87697f43bd9e3bd2b;p=firefly-linux-kernel-4.4.55.git

pty: Remove redundant itty reset

port->itty has already been reset by release_tty() before
pty_cleanup() is called.

Call stack:
release_tty()
  tty_kref_put()
    queue_release_one_tty()
      release_one_tty() : workqueue
        tty->ops->cleanup()
          pty_cleanup()

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/tty/pty.c b/drivers/tty/pty.c
index c24b4db243b9..71e456aa6367 100644
--- a/drivers/tty/pty.c
+++ b/drivers/tty/pty.c
@@ -413,7 +413,6 @@ static void pty_unix98_shutdown(struct tty_struct *tty)
 
 static void pty_cleanup(struct tty_struct *tty)
 {
-	tty->port->itty = NULL;
 	tty_port_put(tty->port);
 }