Merge tag 'metag-for-v3.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/jhoga...

[firefly-linux-kernel-4.4.55.git] / drivers / acpi / pci_root.c

diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c
index 417487a201fbe0aa43f2e241407b3b8fe8139dcd..0ac546d5e53f5b0f079792c71419dd07001fe892 100644 (file)
--- a/drivers/acpi/pci_root.c
+++ b/drivers/acpi/pci_root.c
@@ -45,8 +45,9 @@
 ACPI_MODULE_NAME("pci_root");
 #define ACPI_PCI_ROOT_CLASS            "pci_bridge"
 #define ACPI_PCI_ROOT_DEVICE_NAME      "PCI Root Bridge"
-static int acpi_pci_root_add(struct acpi_device *device);
-static int acpi_pci_root_remove(struct acpi_device *device, int type);
+static int acpi_pci_root_add(struct acpi_device *device,
+                            const struct acpi_device_id *not_used);
+static void acpi_pci_root_remove(struct acpi_device *device);
 
 #define ACPI_PCIE_REQ_SUPPORT (OSC_EXT_PCI_CONFIG_SUPPORT \
                                | OSC_ACTIVE_STATE_PWR_SUPPORT \
@@ -57,16 +58,11 @@ static const struct acpi_device_id root_device_ids[] = {
        {"PNP0A03", 0},
        {"", 0},
 };
-MODULE_DEVICE_TABLE(acpi, root_device_ids);
 
-static struct acpi_driver acpi_pci_root_driver = {
-       .name = "pci_root",
-       .class = ACPI_PCI_ROOT_CLASS,
+static struct acpi_scan_handler pci_root_handler = {
        .ids = root_device_ids,
-       .ops = {
-               .add = acpi_pci_root_add,
-               .remove = acpi_pci_root_remove,
-               },
+       .attach = acpi_pci_root_add,
+       .detach = acpi_pci_root_remove,
 };
 
 /* Lock to protect both acpi_pci_roots and acpi_pci_drivers lists */
@@ -410,13 +406,13 @@ out:
 }
 EXPORT_SYMBOL(acpi_pci_osc_control_set);
 
-static int acpi_pci_root_add(struct acpi_device *device)
+static int acpi_pci_root_add(struct acpi_device *device,
+                            const struct acpi_device_id *not_used)
 {
        unsigned long long segment, bus;
        acpi_status status;
        int result;
        struct acpi_pci_root *root;
-       acpi_handle handle;
        struct acpi_pci_driver *driver;
        u32 flags, base_flags;
        bool is_osc_granted = false;
@@ -471,16 +467,6 @@ static int acpi_pci_root_add(struct acpi_device *device)
               acpi_device_name(device), acpi_device_bid(device),
               root->segment, &root->secondary);
 
-       /*
-        * PCI Routing Table
-        * -----------------
-        * Evaluate and parse _PRT, if exists.
-        */
-       status = acpi_get_handle(device->handle, METHOD_NAME__PRT, &handle);
-       if (ACPI_SUCCESS(status))
-               result = acpi_pci_irq_add_prt(device->handle, root->segment,
-                                             root->secondary.start);
-
        root->mcfg_addr = acpi_pci_root_get_mcfg_addr(device->handle);
 
        /*
@@ -598,23 +584,20 @@ static int acpi_pci_root_add(struct acpi_device *device)
                pci_enable_bridges(root->bus);
 
        pci_bus_add_devices(root->bus);
-       return 0;
+       return 1;
 
 out_del_root:
        mutex_lock(&acpi_pci_root_lock);
        list_del(&root->node);
        mutex_unlock(&acpi_pci_root_lock);
 
-       acpi_pci_irq_del_prt(root->segment, root->secondary.start);
 end:
        kfree(root);
        return result;
 }
 
-static int acpi_pci_root_remove(struct acpi_device *device, int type)
+static void acpi_pci_root_remove(struct acpi_device *device)
 {
-       acpi_status status;
-       acpi_handle handle;
        struct acpi_pci_root *root = acpi_driver_data(device);
        struct acpi_pci_driver *driver;
 
@@ -629,31 +612,22 @@ static int acpi_pci_root_remove(struct acpi_device *device, int type)
        device_set_run_wake(root->bus->bridge, false);
        pci_acpi_remove_bus_pm_notifier(device);
 
-       status = acpi_get_handle(device->handle, METHOD_NAME__PRT, &handle);
-       if (ACPI_SUCCESS(status))
-               acpi_pci_irq_del_prt(root->segment, root->secondary.start);
-
        pci_remove_root_bus(root->bus);
 
        mutex_lock(&acpi_pci_root_lock);
        list_del(&root->node);
        mutex_unlock(&acpi_pci_root_lock);
        kfree(root);
-       return 0;
 }
 
-int __init acpi_pci_root_init(void)
+void __init acpi_pci_root_init(void)
 {
        acpi_hest_init();
 
-       if (acpi_pci_disabled)
-               return 0;
-
-       pci_acpi_crs_quirks();
-       if (acpi_bus_register_driver(&acpi_pci_root_driver) < 0)
-               return -ENODEV;
-
-       return 0;
+       if (!acpi_pci_disabled) {
+               pci_acpi_crs_quirks();
+               acpi_scan_add_handler(&pci_root_handler);
+       }
 }
 /* Support root bridge hotplug */