USB: serial: option: Ignore card reader interface on Huawei E1750

Hi,

my Huawei 3G modem has an embedded Smart Card reader which causes
trouble when the modem is being detected (a bunch of "<warn>  (ttyUSBx):
open blocked by driver for more than 7 seconds!" in messages.log). This
trivial patch corrects the problem for me. The modem identifies itself
as "12d1:1406 Huawei Technologies Co., Ltd. E1750" in lsusb although the
description on the body says "Model E173u-1"

Signed-off-by: Michal Malý <madcatxster@prifuk.cz>
Cc: Bjørn Mork <bjorn@mork.no>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
index 1cf6f12..80a7104 100644 (file)
--- a/drivers/usb/serial/option.c
+++ b/drivers/usb/serial/option.c
@@ -81,6 +81,7 @@ static void option_instat_callback(struct urb *urb);
 
 #define HUAWEI_VENDOR_ID                       0x12D1
 #define HUAWEI_PRODUCT_E173                    0x140C
+#define HUAWEI_PRODUCT_E1750                   0x1406
 #define HUAWEI_PRODUCT_K4505                   0x1464
 #define HUAWEI_PRODUCT_K3765                   0x1465
 #define HUAWEI_PRODUCT_K4605                   0x14C6
@@ -567,6 +568,8 @@ static const struct usb_device_id option_ids[] = {
        { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, 0x1c23, USB_CLASS_COMM, 0x02, 0xff) },
        { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E173, 0xff, 0xff, 0xff),
                .driver_info = (kernel_ulong_t) &net_intf1_blacklist },
+       { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1750, 0xff, 0xff, 0xff),
+               .driver_info = (kernel_ulong_t) &net_intf2_blacklist },
        { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, 0x1441, USB_CLASS_COMM, 0x02, 0xff) },
        { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, 0x1442, USB_CLASS_COMM, 0x02, 0xff) },
        { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_K4505, 0xff, 0xff, 0xff),