Am Montag, 28. Juni 2004 18:48 schrieb David Brownell:
> > Is powering down a bus a suspension or a disconnect?
>
> For almost all busses, including USB, it's not a suspension
> unless there's still power to preserve essential state.
> And as I said, when USB VBUS drops, that's disconnect.
> (In fact, see the USB spec on that topic...)
It seems to me that you are interpreting the intention of of the letter
too narrowly.
> > Or are you proposing that disconnect() have a different meaning after
> > suspend()?
>
> Not at all, and I don't see how you could infer such a notion
> from what I did say. Which wasn't a proposal, BTW, it was
> just saying how things work right now.
Sorry, a misunderstanding.
That state of affairs is unsatisfactory. It means that the deeper suspension
modes lose a lot of their usefulness. Ideally the system after resumption is
just like at suspension (minus system clock). It seems to me that to reach
that goal you must never call disconnect() unless the device is physically
removed.
Regards
Oliver
-------------------------------------------------------
This SF.Net email sponsored by Black Hat Briefings & Training.
Attend Black Hat Briefings & Training, Las Vegas July 24-29 -
digital self defense, top technical experts, no vendor pitches,
unmatched networking opportunities. Visit www.blackhat.com
_______________________________________________
[EMAIL PROTECTED]
To unsubscribe, use the last form field at:
https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
