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PCI/PM: Propagate wake-up enable for PCIe devices too
Having read the PM part of the PCIe 2.0 specification more carefully I think that it was a mistake to restrict the wake-up enable propagation to non-PCIe devices, because if we do not request control of the root ports' PME registers via OSC, PCIe PME is supposed to be handled by the platform, just like the non-PCIe PME. Even if we do that, the wake-up propagation is done to allow the devices to wake up the system from sleep states which involves the platform anyway, so it won't hurt. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
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1 changed files with 2 additions and 8 deletions
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@ -112,11 +112,7 @@ static bool acpi_pci_can_wakeup(struct pci_dev *dev)
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static void acpi_pci_propagate_wakeup_enable(struct pci_bus *bus, bool enable)
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{
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while (bus->parent) {
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struct pci_dev *bridge = bus->self;
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int ret;
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ret = acpi_pm_device_sleep_wake(&bridge->dev, enable);
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if (!ret || pci_is_pcie(bridge))
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if (!acpi_pm_device_sleep_wake(&bus->self->dev, enable))
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return;
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bus = bus->parent;
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}
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@ -131,9 +127,7 @@ static int acpi_pci_sleep_wake(struct pci_dev *dev, bool enable)
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if (acpi_pci_can_wakeup(dev))
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return acpi_pm_device_sleep_wake(&dev->dev, enable);
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if (!pci_is_pcie(dev))
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acpi_pci_propagate_wakeup_enable(dev->bus, enable);
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acpi_pci_propagate_wakeup_enable(dev->bus, enable);
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return 0;
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}
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