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

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.

Cc: stable <stable@vger.kernel.org>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit 1f3f687722fd9b29a0c2a85b4844e3b2a3585c63)

Signed-off-by: Ben Chan <benchan@chromium.org>
Conflicts:
	drivers/usb/serial/option.c

Change-Id: I8a020cb3cfac933200fb6b8b5581a51fe1ef1c09
Reviewed-on: https://gerrit.chromium.org/gerrit/50573
Reviewed-by: Olof Johansson <olofj@chromium.org>
Commit-Queue: Ben Chan <benchan@chromium.org>
Tested-by: Ben Chan <benchan@chromium.org>

diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
index 549a99c..93f391b 100644 (file)
--- a/drivers/usb/serial/option.c
+++ b/drivers/usb/serial/option.c
@@ -531,8 +531,12 @@ static const struct usb_device_id option_ids[] = {
        { USB_DEVICE(QUANTA_VENDOR_ID, QUANTA_PRODUCT_GLX) },
        { USB_DEVICE(QUANTA_VENDOR_ID, QUANTA_PRODUCT_GKE) },
        { USB_DEVICE(QUANTA_VENDOR_ID, QUANTA_PRODUCT_GLE) },
+       { 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),