Re: [linux-pm] [RFD] How to tell ACPI drivers what the target sleep state is (was: Re: [PATCH 1/2] acpi choose sleep state help)

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On Wed, 20 Jun 2007, Rafael J. Wysocki wrote:

> > Not. Could pm_message_t have a member indicating the suspend state?
> 
> Well, I thought about that, but I did't know what people on linux-pm would
> think about that.
> 
> Alternatively, we could introduce a pm_target() global PM operation that will
> set the target sleep state for the entire system.
> 
> I think we should discuss that on linux-pm before any decision is made.

Pardon me for asking what may be a dumb question.  Why does ACPI (or
anything else) need to know the target system state in order to decide
how a device should be suspended or whether wakeup should be enabled?

Alan Stern

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