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;
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 &&
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;
if (!device || !acpi_driver_data(device))
return -EINVAL;
- root = (struct acpi_pci_root *)acpi_driver_data(device);
+ root = acpi_driver_data(device);
kfree(root);