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SubjectRe: [linux-pm] [RFC] PCI: Runtime power management
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On Saturday 15 August 2009, Matthew Garrett wrote:
> On Sat, Aug 15, 2009 at 11:21:53PM +0200, Rafael J. Wysocki wrote:
>
> > I can even imagine a scenario where this setting might be useful, like when
> > we don't want a network adapter to be woken up from the outside.
>
> I think in that case we'd probably just want the interface to be downed?
> Some of this is going to require device-specific policy, I think - for
> the network case we probably want something in between IF_RUNNING and
> IF_DOWN (IF_CARRIER, perhaps) that indicates that we want the PHY to be
> powered. Pushing this out to sysfs would mean we'd have a consistent
> interface but varying semantics, and I'm not convinced that's an
> especially helpful interface.

I'm not disagreeing with that.

At this point I'd like to know the Alan's opinion. I would gladly use the
'runtime_forbidden' flag only, but if we overlook something now, it's going
to be difficult to fix later.

Thanks,
Rafael


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