Re: [linux-usb-devel] Re: OHCI problems with suspend/resume

From: Benjamin Herrenschmidt (benh_at_kernel.crashing.org)
Date: 07/31/03

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    To: David Brownell <david-b@pacbell.net>
Date:	31 Jul 2003 23:29:01 +0200

    On Thu, 2003-07-31 at 15:37, David Brownell wrote:
    > Pavel Machek wrote:
    >
    > >>All of which is a roundabout way of adding to what I
    > >>said: the PM infrastructure USB will need to rely on
    > >>seems like it needs polishing yet! :)
    > >
    > >
    > > Do you need vetoing? Otherwise it should be ready, except for APM.
    >
    > USB drivers don't talk suspend/resume yet, so they
    > won't notice missing features there. Regressions
    > are a different story though.
    >
    > But I can imagine that usb-storage (or is that SCSI?)
    > might want to veto suspending devices that are being
    > used for some kinds of i/o. Eventually it should exist.

    The only place where a kernel driver may veto is when doing things
    like firmware flashing.

    If you want to veto suspend when burning a CD, it's userland policy. We
    still need, I beleive, to define/write a proper userland-side API for
    all these with the daemon that goes with it. That will be next step once
    we have the kernel side working properly ;)

    Ben.

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