Re: [RFD] Automatic suspend

[Alan Stern]

On Mon, 16 Feb 2009, Arjan van de Ven wrote:

> > Set the automatic PM parameters (idle timeout, state to go to,
> > etc.). And disabling automatic PM altogether (effectively the same as
> > setting the idle timeout to infinity).
> > 
> 
> shouldn't idle timeout etc be internal to the driver?
> Yes policy preferences / constraints makes sense to communicate,
> actual settings do not. For one they keep changing fast all the time
> anyway.

Sorry, I don't agree.  A single driver may control many different kinds
of device -- it may not even be aware of the distinction!  Consider the
SCSI disk driver: It has to handle both traditional rotating media and
solid-state disks.  Clearly they should have different runtime PM
parameters.  But the driver isn't in a good position to know what those
parameters should be.

Alan Stern

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