Re: [RFC] New system device API

From: Patrick Mochel (
Date: Mon Jun 09 2003 - 18:25:24 EST

> > Well, you need to suspend devices used to write the image, too, so you
> > have state to return to after resume. You only do not want disks to
> > spin down. Perhaps disk can just special-case it ("If I am going to
> > swsusp, I need to save state, but do not really need to spin down").
> Mmm. Sounds ugly though. Would it be fair to say we want to S5 some
> devices and S3 others? Perhaps that sort of terminology might be
> helpful.

Those are not even valid states for devices. Device states are commonly
D0-D3, though they are not represented the same way for all kinds of

Pavel is right, and we should be able to do that generically, though in a
slightly different manner. We should have all devices save state, write
the image, then power them down (including spinning down disks).


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