Re: [PATCH] implement pm_ops.valid for everybody

Pavel Machek
2007-03-21T22:57:30Z

Hi!

> > Which is very much an indication of how weak ACPI is. It
> > doesn't contemplate typical SOC behavior, which have a wide
> > variety of system sleep states that leave the CPU on ... and
> > which may not even *have* (or need!) a "cpu off" state.
> >
> > My own definition would be more like: the minimal RAM-based
> > power-saving system state is "standby". If the system
> > implements a deeper RAM-based system sleep state, that's "STR".
>
> Hmmm, this leaves the decision how to call each state COMPLETELY to the
> implementor, doesn't it?

Is that a problem? If someone is clever enough to implement suspend, I
think we can trust them to name their states right.

(And trust me, we can flame them if not).

(Anyway, my definition would be "mem" == RAM is powered, everything
else is down, except for devices needed for wakeup; "standby" ==
something is powered that can be powered down, we'll fix that in next version).
Pavel

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