Hi,
>> OK, thanks for that info. Following on from it - which fields
>> can I/need I set up again in the completion routine ?
>
> None of them. After you submit any URB, they're all
> read-only from the perspective of the driver. Yes, that
> is part of what makes the automagic resubmit model
> awkward for writing data with interrupt transfers.
Hmm, so if the completion routine finds that the data waiting
to be sent is insufficient to fill the current urb buffer, is the
correct procedure to cancel the urb and resubmit a new one with a
smaller buffer ?
Cheers,
Richard
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