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    SubjectRe: device_suspend() levels [was Re: [patch] ACPI work on aic7xxx]
    Benjamin Herrenschmidt wrote:

    > 2 comments here:
    > - The low level bus state (PCI D state for example) and the "linux"
    > state should be 2 different entities.
    > - For PCI, we probably want a hook so the arch can implement it's own
    > version of pci_set_power_state() so that ACPI can use it's own trickery
    > there.

    Ok, so the takeaway message for driver writers is to treat the
    pci_dev->suspend() state parameter as an opaque value as far as
    possible, and just pass it on to the other layers

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