http://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?id=a9fec7102f01f6464b19e13ffd9d8c48663379ad


From a9fec7102f01f6464b19e13ffd9d8c48663379ad Mon Sep 17 00:00:00 2001
From: Jim Paris <jim@jtan.com>
Date: Thu, 15 Jan 2009 13:31:07 +0000
Subject: ftdi_sio: fix kref leak

Commit 4a90f09b20f4622dcbff1f0e1e6bae1704f8ad8c added kref stuff to
ftdi_sio, but missed tty_kref_put at one exit point in
ftdi_process_read.

Signed-off-by: Jim Paris <jim@jtan.com>
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

---
--- linux-2.6.28/drivers/usb/serial/ftdi_sio.c
+++ linux-2.6.28/drivers/usb/serial/ftdi_sio.c
@@ -2093,7 +2093,7 @@
 			spin_unlock_irqrestore(&priv->rx_lock, flags);
 			dbg("%s - deferring remainder until unthrottled",
 					__func__);
-			return;
+			goto out;
 		}
 		spin_unlock_irqrestore(&priv->rx_lock, flags);
 		/* if the port is closed stop trying to read */