ACPI / PCI / PM: Fix device PM regression related to D3hot/D3cold

[linux-flexiantxendom0-3.2.10.git] / drivers / pci / pci-acpi.c

diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c
index 7c3b18e..61e2fef 100644 (file)
--- a/drivers/pci/pci-acpi.c
+++ b/drivers/pci/pci-acpi.c
@@ -45,13 +45,20 @@ static void pci_acpi_wake_dev(acpi_handle handle, u32 event, void *context)
 {
        struct pci_dev *pci_dev = context;
 
-       if (event == ACPI_NOTIFY_DEVICE_WAKE && pci_dev) {
+       if (event != ACPI_NOTIFY_DEVICE_WAKE || !pci_dev)
+               return;
+
+       if (!pci_dev->pm_cap || !pci_dev->pme_support
+            || pci_check_pme_status(pci_dev)) {
+               if (pci_dev->pme_poll)
+                       pci_dev->pme_poll = false;
+
                pci_wakeup_event(pci_dev);
-               pci_check_pme_status(pci_dev);
                pm_runtime_resume(&pci_dev->dev);
-               if (pci_dev->subordinate)
-                       pci_pme_wakeup_bus(pci_dev->subordinate);
        }
+
+       if (pci_dev->subordinate)
+               pci_pme_wakeup_bus(pci_dev->subordinate);
 }
 
 /**
@@ -193,8 +200,10 @@ static pci_power_t acpi_pci_choose_state(struct pci_dev *pdev)
                return PCI_D1;
        case ACPI_STATE_D2:
                return PCI_D2;
-       case ACPI_STATE_D3:
+       case ACPI_STATE_D3_HOT:
                return PCI_D3hot;
+       case ACPI_STATE_D3_COLD:
+               return PCI_D3cold;
        }
        return PCI_POWER_ERROR;
 }
@@ -268,41 +277,6 @@ static int acpi_pci_sleep_wake(struct pci_dev *dev, bool enable)
        return 0;
 }
 
-/**
- * acpi_dev_run_wake - Enable/disable wake-up for given device.
- * @phys_dev: Device to enable/disable the platform to wake-up the system for.
- * @enable: Whether enable or disable the wake-up functionality.
- *
- * Find the ACPI device object corresponding to @pci_dev and try to
- * enable/disable the GPE associated with it.
- */
-static int acpi_dev_run_wake(struct device *phys_dev, bool enable)
-{
-       struct acpi_device *dev;
-       acpi_handle handle;
-       int error = -ENODEV;
-
-       if (!device_run_wake(phys_dev))
-               return -EINVAL;
-
-       handle = DEVICE_ACPI_HANDLE(phys_dev);
-       if (!handle || ACPI_FAILURE(acpi_bus_get_device(handle, &dev))) {
-               dev_dbg(phys_dev, "ACPI handle has no context in %s!\n",
-                       __func__);
-               return -ENODEV;
-       }
-
-       if (enable) {
-               acpi_enable_wakeup_device_power(dev, ACPI_STATE_S0);
-               acpi_enable_gpe(dev->wakeup.gpe_device, dev->wakeup.gpe_number);
-       } else {
-               acpi_disable_gpe(dev->wakeup.gpe_device, dev->wakeup.gpe_number);
-               acpi_disable_wakeup_device_power(dev);
-       }
-
-       return error;
-}
-
 static void acpi_pci_propagate_run_wake(struct pci_bus *bus, bool enable)
 {
        while (bus->parent) {
@@ -310,14 +284,14 @@ static void acpi_pci_propagate_run_wake(struct pci_bus *bus, bool enable)
 
                if (bridge->pme_interrupt)
                        return;
-               if (!acpi_dev_run_wake(&bridge->dev, enable))
+               if (!acpi_pm_device_run_wake(&bridge->dev, enable))
                        return;
                bus = bus->parent;
        }
 
        /* We have reached the root bus. */
        if (bus->bridge)
-               acpi_dev_run_wake(bus->bridge, enable);
+               acpi_pm_device_run_wake(bus->bridge, enable);
 }
 
 static int acpi_pci_run_wake(struct pci_dev *dev, bool enable)
@@ -325,7 +299,7 @@ static int acpi_pci_run_wake(struct pci_dev *dev, bool enable)
        if (dev->pme_interrupt)
                return 0;
 
-       if (!acpi_dev_run_wake(&dev->dev, enable))
+       if (!acpi_pm_device_run_wake(&dev->dev, enable))
                return 0;
 
        acpi_pci_propagate_run_wake(dev->bus, enable);
@@ -391,7 +365,6 @@ static int __init acpi_pci_init(void)
 
        if (acpi_gbl_FADT.boot_flags & ACPI_FADT_NO_ASPM) {
                printk(KERN_INFO"ACPI FADT declares the system doesn't support PCIe ASPM, so disable it\n");
-               pcie_clear_aspm();
                pcie_no_aspm();
        }