linux-kernel - [PATCH] USB: ti_usb_3410_5052: fix dynamic-id matching

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Date:	Fri, 28 Jun 2013 12:24:26 +0200
From:	Johan Hovold <jhovold@...il.com>
To:	Greg KH <gregkh@...uxfoundation.org>
Cc:	Anders Hammarquist <iko@....pp.se>, linux-kernel@...r.kernel.org,
	linux-usb@...r.kernel.org, Johan Hovold <jhovold@...il.com>,
	stable <stable@...r.kernel.org>
Subject: [PATCH] USB: ti_usb_3410_5052: fix dynamic-id matching

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>
Cc: stable <stable@...r.kernel.org>
Signed-off-by: Johan Hovold <jhovold@...il.com>
---
 drivers/usb/serial/ti_usb_3410_5052.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/serial/ti_usb_3410_5052.c b/drivers/usb/serial/ti_usb_3410_5052.c
index 5585b20..5c07d55 100644
--- a/drivers/usb/serial/ti_usb_3410_5052.c
+++ b/drivers/usb/serial/ti_usb_3410_5052.c
@@ -309,7 +309,7 @@ static int ti_startup(struct usb_serial *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;
 	dev_dbg(&dev->dev, "%s - device type is %s\n", __func__,
 		tdev->td_is_3410 ? "3410" : "5052");
-- 
1.8.2.1

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