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    SubjectRe: [linux-pm] [RFC] PCI: Runtime power management
    Date
    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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