[linux-pm] PM models

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On Tue, 2 Nov 2004, Benjamin Herrenschmidt wrote:

> The fact that all suspend() callbacks imply freeze, which is a drivers
> state, makes me think that freeze is just what ... suspend() means. That
> is, we can get rid of the "freeze" semantic altogether if we consider
> that the pm_message contains a suggested "abstract" power state. suspend
> with state "on" would mean freeze.

To clarify one point -- if a device is already in a low-power state would 
suspend with state "on" imply that the device must go to its full-power 
state, or is it always consistent with a suspend request to go to a state 
with <= the requested power level?

Alan Stern



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