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SubjectRe: [PATCH v3 2/2] PM / Runtime: Add pm_runtime_enable_recursive
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On Tuesday, May 19, 2015 01:49:15 PM Alan Stern wrote:
> On Tue, 19 May 2015, Tomeu Vizoso wrote:
>
> > This function makes less cumbersome to enable runtime PM in a device and
> > its descendants.
> >
> > Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
>
> I don't see the point of this. In the scenario you have in mind, are
> the device and all its descendants registered by the same
> subsystem/driver? If they are, can't the subsystem/driver code enable
> runtime PM for each of them when they are registered, by adding a
> single call in the right spot?
>
> If they don't all belong to the same subsystem/driver, who is going to
> call your pm_runtime_enable_recursive routine? No single caller will
> have the right to enable runtime PM for all these devices.

Agreed.


--
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.


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