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    Subject[PATCH] Fix USB vendor and product IDs endianness for USB HID devices

    The generic HID layer changes introduced an endianness bug for USB HID

    The USB vendor and product IDs are not byteswapped appropriately, and
    thus come out in the wrong endianness when fetched through the evdev
    using ioctl() on big endian platforms.

    This byteswapping used to be done in hidinput_connect() (by
    usb_to_input_id()) when filling up the hid device structure, and now
    needs to be done upstream. USB is the only user so far, and the
    hid_device structure is set up in usb_hid_configure().

    Signed-off-by: Julien BLACHE <>

    --- hid-core.c~ 2007-02-05 11:16:33.905278861 +0100
    +++ hid-core.c 2007-02-10 21:53:52.366333019 +0100
    @@ -1220,8 +1220,8 @@

    hid->bus = BUS_USB;
    - hid->vendor = dev->descriptor.idVendor;
    - hid->product = dev->descriptor.idProduct;
    + hid->vendor = le16_to_cpu(dev->descriptor.idVendor);
    + hid->product = le16_to_cpu(dev->descriptor.idProduct);

    usb_make_path(dev, hid->phys, sizeof(hid->phys));
    strlcat(hid->phys, "/input", sizeof(hid->phys));

    Please apply, and this is a candidate for -stable as it breaks a
    documented API/ABI in userspace.


    Julien BLACHE <>
    <> GPG KeyID 0xF5D65169
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