Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6

* 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: (75 commits)
  PCI hotplug: clean up acpi_run_hpp()
  PCI hotplug: acpiphp: use generic pci_configure_slot()
  PCI hotplug: shpchp: use generic pci_configure_slot()
  PCI hotplug: pciehp: use generic pci_configure_slot()
  PCI hotplug: add pci_configure_slot()
  PCI hotplug: clean up acpi_get_hp_params_from_firmware() interface
  PCI hotplug: acpiphp: don't cache hotplug_params in acpiphp_bridge
  PCI hotplug: acpiphp: remove superfluous _HPP/_HPX evaluation
  PCI: Clear saved_state after the state has been restored
  PCI PM: Return error codes from pci_pm_resume()
  PCI: use dev_printk in quirk messages
  PCI / PCIe portdrv: Fix pcie_portdrv_slot_reset()
  PCI Hotplug: convert acpi_pci_detect_ejectable() to take an acpi_handle
  PCI Hotplug: acpiphp: find bridges the easy way
  PCI: pcie portdrv: remove unused variable
  PCI / ACPI PM: Propagate wake-up enable for devices w/o ACPI support
  ACPI PM: Replace wakeup.prepared with reference counter
  PCI PM: Introduce device flag wakeup_prepared
  PCI / ACPI PM: Rework some debug messages
  PCI PM: Simplify PCI wake-up code
  ...

Fixed up conflict in arch/powerpc/kernel/pci_64.c due to OF device tree
scanning having been moved and merged for the 32- and 64-bit cases.  The
'needs_freset' initialization added in 6e19314cc ("PCI/powerpc: support
PCIe fundamental reset") is now in arch/powerpc/kernel/pci_of_scan.c.

1 files changed, 23 insertions, 6 deletions

diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c
index ea15b0537457..33317df47699 100644
--- a/drivers/pci/pci-acpi.c
+++ b/drivers/pci/pci-acpi.c
@@ -109,15 +109,32 @@ static bool acpi_pci_can_wakeup(struct pci_dev *dev)
 	return handle ? acpi_bus_can_wakeup(handle) : false;
 }
 
+static void acpi_pci_propagate_wakeup_enable(struct pci_bus *bus, bool enable)
+{
+	while (bus->parent) {
+		struct pci_dev *bridge = bus->self;
+		int ret;
+
+		ret = acpi_pm_device_sleep_wake(&bridge->dev, enable);
+		if (!ret || bridge->is_pcie)
+			return;
+		bus = bus->parent;
+	}
+
+	/* We have reached the root bus. */
+	if (bus->bridge)
+		acpi_pm_device_sleep_wake(bus->bridge, enable);
+}
+
 static int acpi_pci_sleep_wake(struct pci_dev *dev, bool enable)
 {
-	int error = acpi_pm_device_sleep_wake(&dev->dev, enable);
+	if (acpi_pci_can_wakeup(dev))
+		return acpi_pm_device_sleep_wake(&dev->dev, enable);
 
-	if (!error)
-		dev_printk(KERN_INFO, &dev->dev,
-				"wake-up capability %s by ACPI\n",
-				enable ? "enabled" : "disabled");
-	return error;
+	if (!dev->is_pcie)
+		acpi_pci_propagate_wakeup_enable(dev->bus, enable);
+
+	return 0;
 }
 
 static struct pci_platform_pm_ops acpi_pci_platform_pm = {