linux-kernel - [ 08/23] USB: ti_usb_3410_5052: fix dynamic-id matching

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Message-Id: <20130802102037.346177854@linuxfoundation.org>
Date:	Fri,  2 Aug 2013 18:23:21 +0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Anders Hammarquist <iko@....pp.se>,
	Johan Hovold <jhovold@...il.com>
Subject: [ 08/23] USB: ti_usb_3410_5052: fix dynamic-id matching

3.0-stable 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>

---
 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
@@ -409,7 +409,7 @@ 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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