linux-kernel - [75/84] USB: ti_usb_3410_5052: fix dynamic-id matching

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Message-ID: <lsq.1375276989.242438838@decadent.org.uk>
Date:	Wed, 31 Jul 2013 15:23:09 +0200
From:	Ben Hutchings <ben@...adent.org.uk>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:	akpm@...ux-foundation.org, "Anders Hammarquist" <iko@....pp.se>,
	"Johan Hovold" <jhovold@...il.com>,
	"Greg Kroah-Hartman" <gregkh@...uxfoundation.org>
Subject: [75/84] USB: ti_usb_3410_5052: fix dynamic-id matching

3.2.50-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Johan Hovold <jhovold@...il.com>

commit 1fad56424f5ad3ce4973505a357212b2e2282b3f upstream.

The driver failed to take the dynamic ids into account when determining
the device type and therefore all devices were detected as 2-port
devices when using the dynamic-id interface.

Match on the usb-serial-driver field instead of doing redundant id-table
searches.

Reported-by: Anders Hammarquist <iko@....pp.se>
Signed-off-by: Johan Hovold <jhovold@...il.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 drivers/usb/serial/ti_usb_3410_5052.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/usb/serial/ti_usb_3410_5052.c
+++ b/drivers/usb/serial/ti_usb_3410_5052.c
@@ -408,7 +408,7 @@ static int ti_startup(struct usb_serial
 	usb_set_serial_data(serial, tdev);
 
 	/* determine device type */
-	if (usb_match_id(serial->interface, ti_id_table_3410))
+	if (serial->type == &ti_1port_device)
 		tdev->td_is_3410 = 1;
 	dbg("%s - device type is %s", __func__,
 				tdev->td_is_3410 ? "3410" : "5052");

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