[PATCH 21/61] Bluetooth: Check if DLC is still attached to the TTY

[Chris Wright <chrisw@sous-sol.org>]

-stable review patch.  If anyone has any objections, please let us know.
------------------

From: Marcel Holtmann <marcel@holtmann.org>

[Bluetooth] Check if DLC is still attached to the TTY

If the DLC device is no longer attached to the TTY device, then it
makes no sense to go through with changing the termios settings.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>

---
 net/bluetooth/rfcomm/tty.c |    3 +++
 1 file changed, 3 insertions(+)

--- linux-2.6.18.1.orig/net/bluetooth/rfcomm/tty.c
+++ linux-2.6.18.1/net/bluetooth/rfcomm/tty.c
@@ -748,6 +748,9 @@ static void rfcomm_tty_set_termios(struc
 
 	BT_DBG("tty %p termios %p", tty, old);
 
+	if (!dev)
+		return;
+
 	/* Handle turning off CRTSCTS */
 	if ((old->c_cflag & CRTSCTS) && !(new->c_cflag & CRTSCTS)) 
 		BT_DBG("Turning off CRTSCTS unsupported");

--
-
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