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

diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c
index 2e1a74a..ad4145a 100644 (file)
--- a/drivers/acpi/pci_root.c
+++ b/drivers/acpi/pci_root.c
@@ -36,17 +36,16 @@
 #include <acpi/acpi_drivers.h>
 
 #define _COMPONENT             ACPI_PCI_COMPONENT
-ACPI_MODULE_NAME("pci_root")
+ACPI_MODULE_NAME("pci_root");
 #define ACPI_PCI_ROOT_CLASS            "pci_bridge"
 #define ACPI_PCI_ROOT_HID              "PNP0A03"
-#define ACPI_PCI_ROOT_DRIVER_NAME      "ACPI PCI Root Bridge Driver"
 #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_start(struct acpi_device *device);
 
 static struct acpi_driver acpi_pci_root_driver = {
-       .name = ACPI_PCI_ROOT_DRIVER_NAME,
+       .name = "pci_root",
        .class = ACPI_PCI_ROOT_CLASS,
        .ids = ACPI_PCI_ROOT_HID,
        .ops = {
@@ -98,11 +97,12 @@ void acpi_pci_unregister_driver(struct acpi_pci_driver *driver)
 
        struct acpi_pci_driver **pptr = &sub_driver;
        while (*pptr) {
-               if (*pptr != driver)
-                       continue;
-               *pptr = (*pptr)->next;
-               break;
+               if (*pptr == driver)
+                       break;
+               pptr = &(*pptr)->next;
        }
+       BUG_ON(!*pptr);
+       *pptr = (*pptr)->next;
 
        if (!driver->remove)
                return;
@@ -116,10 +116,23 @@ void acpi_pci_unregister_driver(struct acpi_pci_driver *driver)
 
 EXPORT_SYMBOL(acpi_pci_unregister_driver);
 
+acpi_handle acpi_get_pci_rootbridge_handle(unsigned int seg, unsigned int bus)
+{
+       struct acpi_pci_root *tmp;
+       
+       list_for_each_entry(tmp, &acpi_pci_roots, node) {
+               if ((tmp->id.segment == (u16) seg) && (tmp->id.bus == (u16) bus))
+                       return tmp->device->handle;
+       }
+       return NULL;            
+}
+
+EXPORT_SYMBOL_GPL(acpi_get_pci_rootbridge_handle);
+
 static acpi_status
 get_root_bridge_busnr_callback(struct acpi_resource *resource, void *data)
 {
-       int *busnr = (int *)data;
+       int *busnr = data;
        struct acpi_resource_address64 address;
 
        if (resource->type != ACPI_RESOURCE_TYPE_ADDRESS16 &&
@@ -180,10 +193,9 @@ static int acpi_pci_root_add(struct acpi_device *device)
        if (!device)
                return -EINVAL;
 
-       root = kmalloc(sizeof(struct acpi_pci_root), GFP_KERNEL);
+       root = kzalloc(sizeof(struct acpi_pci_root), GFP_KERNEL);
        if (!root)
                return -ENOMEM;
-       memset(root, 0, sizeof(struct acpi_pci_root));
        INIT_LIST_HEAD(&root->node);
 
        root->device = device;
@@ -350,7 +362,7 @@ static int acpi_pci_root_remove(struct acpi_device *device, int type)
        if (!device || !acpi_driver_data(device))
                return -EINVAL;
 
-       root = (struct acpi_pci_root *)acpi_driver_data(device);
+       root = acpi_driver_data(device);
 
        kfree(root);