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 = {