linux-kernel - [PATCH] pty: Remove redundant itty reset

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Date:	Tue,  5 Feb 2013 16:08:50 -0500
From:	Peter Hurley <peter@...leysoftware.com>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Jiri Slaby <jslaby@...e.cz>
Cc:	linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org,
	Peter Hurley <peter@...leysoftware.com>
Subject: [PATCH] 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@...leysoftware.com>
---
 drivers/tty/pty.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/tty/pty.c b/drivers/tty/pty.c
index c24b4db..71e456a 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);
 }
 
-- 
1.8.1.2

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