From: Denis Joseph Barrow <D.Barow@option.com>
Date: Fri, 2 Jan 2009 13:50:29 +0000 (+0000)
Subject: hso modem detect fix patch against Alan Cox'es tty tree
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=58eb17f155704062d76729d1fb7e23d3559ca86a;p=linux-beck.git

hso modem detect fix patch against Alan Cox'es tty tree

Fixed incorrect check for the modem port, this prevents
crashes caused by issueing a tiocmget_submit_urb
on endpoints which don't exist for non modem devices.

Signed-off-by: Denis Joseph Barrow <D.Barow@option.com>
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/drivers/net/usb/hso.c b/drivers/net/usb/hso.c
index d974d970e5fd..148af34837f0 100644
--- a/drivers/net/usb/hso.c
+++ b/drivers/net/usb/hso.c
@@ -2663,7 +2663,7 @@ static struct hso_device *hso_create_bulk_serial_device(
 	serial->parent = hso_dev;
 	hso_dev->port_data.dev_serial = serial;
 
-	if (port & HSO_PORT_MODEM) {
+	if ((port & HSO_PORT_MASK) == HSO_PORT_MODEM) {
 		num_urbs = 2;
 		serial->tiocmget = kzalloc(sizeof(struct hso_tiocmget),
 					   GFP_KERNEL);