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    SubjectRe: [PATCHv3 2/4] usb: gadget: replace "is_dualspeed" with "max_speed"

    On Tue, Aug 23, 2011 at 05:07:11PM +0200, Michal Nazarewicz wrote:
    > On Tue, 23 Aug 2011 16:58:01 +0200, Felipe Balbi <> wrote:
    > >I stand with the fact that if they are part of the same configuration,
    > >there's no way around it, storage will have to come down to full speed.
    > >Unless I'm missing something.
    > If you look at config_buf() in composite.c, you'll notice that composite
    > just skips functions that do not support current speed. This means, that
    > if a connection uses high speed but given function can handle only full
    > speed, it won't be included in the descriptors.
    > config_buf() is called from config_desc() which similarly, iterates over
    > configurations skipping the ones that do not support given speed.
    > Configuration is defined to support given speed if at least one function
    > that is added to that configuration supports that speed (see
    > usb_add_function()).

    I'm trying to think if this is really what we want. This might mean
    $current_config will be different depending if we connect it to SS, HS
    or FS hubs. Do we need USB-IF's help here ? I guess I could drop them a
    mail and ask for some clarification. Don't know how long it would take
    to get an answer though :-s

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