On Tue, May 01, 2001 at 01:59:43AM +0200, Martin Diehl wrote:
> > The merits of this check can probably be debated, and FWIW usb-uhci.c doesn't
> > have this check and the submitting bulk packets to interrupt pipe hack works fine
>
> Well, should usb-uhci be proved to accept bulk traffic for lowspeed
> device, I would call this a bug of usb-uhci. OTOH there might be some
> trick in usb-uhci which emulates bulk transfers using single-shot
> (i.e. not rescheduled) interrupt transfer. But I really have no idea
> what it would be good for - probably reusing the same code for both types?
usb-uhci doesn't share code for bulk and interrupt transfers. And yes, it
accepts bulk transfers for low speed devices (and AFAIK also isochrounous).
But I see no use in adding a check for that, I would call this an
(unintentional) feature, and there are a few good reasons to keep it like that
(unregular interrupts, testing etc). As with all the URB content, it's
the responsibility of the submitting driver to provide useful
information...
--
Georg Acher, [EMAIL PROTECTED]
http://www.in.tum.de/~acher/
"Oh no, not again !" The bowl of petunias
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