Messages in this thread | | | Date | Mon, 16 Feb 2009 21:43:52 -0500 (EST) | From | Alan Stern <> | Subject | Re: [RFD] Automatic suspend |
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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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