Re: [RFC] dynamic device power management proposal

[Pavel Machek <pavel@ucw.cz>]

On Thu 2007-03-22 15:18:34, Oliver Neukum wrote:
> Am Donnerstag, 22. März 2007 14:56 schrieb Pavel Machek:
> > > > Generic entry points are for _system_ suspend, and if you try to abuse
> > > > them for runtime PM, you'll have to audit/change all the drivers.
> > > 
> > > Is this your position regarding USB autosuspend, too? Should we use
> > > other methods than suspend/resume?
> > 
> > Well, you should have audited USB drivers when enabling autosuspend...
> > But I believe you did that so you are pretty much okay.
> 
> We audited them. Respectively, are auditing them.

Ok. (It would be nice to document 'USB suspend/resume routines are
called during runtime, too' somewhere.

> > (With autosuspend, you can get situation when request from userland
> > comes in even when device is suspended; some devices will need
> > fixing).
> 
> Currently, such requests are ignored. Is there any problem with that?

You should probably autowake such device, no?

So USB stick sits unused for 10minutes and autosuspend. I want to read
the USB stick. Stick needs to autowakeup, me thinks.
								Pavel

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