Re: [RFC][PATCH] PM / Platform: Remove __weak definitions of runtimePM callbacks

[Grant Likely]

On Wed, Apr 06, 2011 at 03:35:32PM -0700, Kevin Hilman wrote:
> Hi Rafael, Magnus,
> 
> "Rafael J. Wysocki" <rjw@xxxxxxx> writes:
> 
> > From: Rafael J. Wysocki <rjw@xxxxxxx>
> >
> > Remove the __weak definitions of platform bus type runtime PM
> > callbacks, make platform_dev_pm_ops point to the generic routines
> > as appropriate and allow architectures using platform_dev_pm_ops to
> > replace the runtime PM callbacks in that structure with their own
> > set.
> >
> > Convert architectures providing its own definitions of the platform
> > runtime PM callbacks to use the new mechanism.
> >
> > Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx>
> 
> I dont't think we should be adding yet another new interface for setting
> platform-specific runtime PM ops.
> 
> We now have 3.  Two existing ones:
> 
> 1) new device power domains (presumably preferred)
> 2) platform_bus_set_pm_ops() (disliked by many)
> 
> and now the new one you create here
> 
> 3) platform_set_runtime_pm_ops()
> 
> This new one is basically the same as platform_bus_set_pm_ops(), but
> targetted only at runtime PM ops, and also has all the same problems
> that have been discussed before.  Namely, it overrides the pm ops for
> *every* device on the platform_bus, instead of targetting only specific
> devices.  With the new device power domains, we can target specific
> devices.
> 
> Wouldn't the right way to go here be to convert mach-shmobile over to
> using device power domains?

I agree.  +1

g.
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