Re: [RFC PATCH] PM / Runtime: Allow to inactivate devices during system suspend

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On Wednesday, November 20, 2013 12:23:03 PM Pavel Machek wrote:
> On Wed 2013-11-20 11:52:05, Ulf Hansson wrote:
> > On 19 November 2013 16:35, Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote:
> > > On Tue, 19 Nov 2013, Ulf Hansson wrote:
> > >
> > >> At the moment, system PM is already affecting behaviour of runtime PM
> > >> since it is preventing runtime suspend during system suspend.
> > >
> > > Sure.  And that behavior is documented.  In any case, it's a bug for
> > > drivers to depend on runtime suspend for carrying out a system suspend.
> > 
> > Why do you say that?
> 
> Because that's the way it is?
> 
> > A significant amount of drivers should be able to cope with only the
> > runtime PM callbacks, if only the PM core have respected the drivers
> > in the way my RFC proposes.
> 
> So what? It is not as additional callback is huge burden -- code is
> the same -- and we do want option of disabling runtime PM.
> 
> Don't make system suspend dependend on runtime PM.

Amen.

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