On Thu, Nov 17, 2011 at 04:31:32PM -0800, Brian Norris wrote: > +linux-pm mailing list > > Hi Felipe, > > On Wed, Nov 16, 2011 at 12:34 PM, Felipe Balbi <balbi@xxxxxx> wrote: > > On Wed, Nov 16, 2011 at 12:27:59PM -0800, Brian Norris wrote: > >> + /* Does platform support suspend/resume? */ > >> + if (!pdata->suspend || !pdata->resume) > >> + return -EINVAL; > > > > should you really prevent suspend is platform doesn't provide > > ->suspend() ? > > No, we shouldn't prevent suspend entirely; that would just be my > accidental side effect. > > > I mean, we could some platform where all clocks are autogated and > > there's no need for platform to do anything. Would it be better to only > > call pdata->suspend if it exists but still let the AHCI-specific part go > > through ? > > Perhaps. But would this have any unintended effects on systems that > don't implement AHCI power management at all? My intention was just to > provide an 'opt-in' interface for platform developers. I probably got > this wrong. I guess you could add a flag for that, but until we know that the AHCI powermanagement is broken somewhere should we really care ? :-) -- balbi
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