USB: option: add Huawei "ACM" devices using protocol = vendor

commit 1f3f687722fd9b29a0c2a85b4844e3b2a3585c63 upstream.

The USB device descriptor of one identity presented by a few
Huawei morphing devices have serial functions with class codes
02/02/ff, indicating CDC ACM with a vendor specific protocol. This
combination is often used for MSFT RNDIS functions, and the CDC
ACM class driver will therefore ignore such functions.

The CDC ACM class driver cannot support functions with only 2
endpoints.  The underlying serial functions of these modems are
also believed to be the same as for alternate device identities
already supported by the option driver. Letting the same driver
handle these functions independently of the current identity
ensures consistent handling and user experience.

There is no need to blacklist these devices in the rndis_host
driver. Huawei serial functions will either have only 2 endpoints
or a CDC ACM functional descriptor with bmCapabilities != 0, making
them correctly ignored as "non RNDIS" by that driver.

Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
index 004f5b0b6e2bf656615187b4c8ad361615d819b5..f7d339d8187bd690b86b22ccf85b740781257226 100644 (file)
--- a/drivers/usb/serial/option.c
+++ b/drivers/usb/serial/option.c
@@ -578,8 +578,12 @@ static const struct usb_device_id option_ids[] = {
        { USB_DEVICE(QUANTA_VENDOR_ID, QUANTA_PRODUCT_GLE) },
        { USB_DEVICE(QUANTA_VENDOR_ID, 0xea42),
                .driver_info = (kernel_ulong_t)&net_intf4_blacklist },
+       { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, 0x1c05, USB_CLASS_COMM, 0x02, 0xff) },
+       { 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, 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),
                .driver_info = (kernel_ulong_t) &huawei_cdc12_blacklist },
        { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_K3765, 0xff, 0xff, 0xff),