[PATCH] acpi bridge hotadd: ACPI based root bridge hot-add

[linux-2.6] / drivers / acpi / pci_root.c

diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c
index 7e6b8e3b2ed418e15af1c0cad4eabb6b01e02031..5d2f77fcd50c7a2992a3f7957a1862ac33da1f8d 100644 (file)
--- a/drivers/acpi/pci_root.c
+++ b/drivers/acpi/pci_root.c
@@ -46,6 +46,7 @@ ACPI_MODULE_NAME              ("pci_root")
 
 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_start (struct acpi_device *device);
 
 static struct acpi_driver acpi_pci_root_driver = {
        .name =         ACPI_PCI_ROOT_DRIVER_NAME,
@@ -54,6 +55,7 @@ static struct acpi_driver acpi_pci_root_driver = {
        .ops =          {
                                .add =    acpi_pci_root_add,
                                .remove = acpi_pci_root_remove,
+                               .start =  acpi_pci_root_start,
                        },
 };
 
@@ -169,6 +171,7 @@ acpi_pci_root_add (
        if (!root)
                return_VALUE(-ENOMEM);
        memset(root, 0, sizeof(struct acpi_pci_root));
+       INIT_LIST_HEAD(&root->node);
 
        root->handle = device->handle;
        strcpy(acpi_device_name(device), ACPI_PCI_ROOT_DEVICE_NAME);
@@ -298,12 +301,31 @@ acpi_pci_root_add (
                        root->id.bus);
 
 end:
-       if (result)
+       if (result) {
+               if (!list_empty(&root->node))
+                       list_del(&root->node);
                kfree(root);
+       }
 
        return_VALUE(result);
 }
 
+static int
+acpi_pci_root_start (
+       struct acpi_device      *device)
+{
+       struct acpi_pci_root    *root;
+
+       ACPI_FUNCTION_TRACE("acpi_pci_root_start");
+
+       list_for_each_entry(root, &acpi_pci_roots, node) {
+               if (root->handle == device->handle) {
+                       pci_bus_add_devices(root->bus);
+                       return_VALUE(0);
+               }
+       }
+       return_VALUE(-ENODEV);
+}
 
 static int
 acpi_pci_root_remove (