PCI/ACPI: Pass acpi_pci_root to acpi_pci_drivers' add/remove interface
This patch changes .add/.remove interfaces of acpi_pci_driver.
In the current implementation acpi_handle is passed as a parameter
of .add/.remove interface. However, the acpi_pci_root structure
contains more useful information than just the acpi_handle. This
enables us to avoid some useless lookups in each acpi_pci_driver.
Note: This changes interfaces used by acpi_pci_register_driver(), an
exported symbol. This patch updates all the in-kernel users, but any
out-of-kernel acpi_pci_register_driver() users will need updates.
[bhelgaas: changelog]
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
diff --git a/drivers/acpi/pci_slot.c b/drivers/acpi/pci_slot.c
index e50e31a..8051ffa 100644
--- a/drivers/acpi/pci_slot.c
+++ b/drivers/acpi/pci_slot.c
@@ -67,8 +67,8 @@
struct list_head list; /* node in the list of slots */
};
-static int acpi_pci_slot_add(acpi_handle handle);
-static void acpi_pci_slot_remove(acpi_handle handle);
+static int acpi_pci_slot_add(struct acpi_pci_root *root);
+static void acpi_pci_slot_remove(struct acpi_pci_root *root);
static LIST_HEAD(slot_list);
static DEFINE_MUTEX(slot_list_lock);
@@ -295,11 +295,11 @@
* @handle: points to an acpi_pci_root
*/
static int
-acpi_pci_slot_add(acpi_handle handle)
+acpi_pci_slot_add(struct acpi_pci_root *root)
{
acpi_status status;
- status = walk_root_bridge(handle, register_slot);
+ status = walk_root_bridge(root->device->handle, register_slot);
if (ACPI_FAILURE(status))
err("%s: register_slot failure - %d\n", __func__, status);
@@ -311,10 +311,11 @@
* @handle: points to an acpi_pci_root
*/
static void
-acpi_pci_slot_remove(acpi_handle handle)
+acpi_pci_slot_remove(struct acpi_pci_root *root)
{
struct acpi_pci_slot *slot, *tmp;
struct pci_bus *pbus;
+ acpi_handle handle = root->device->handle;
mutex_lock(&slot_list_lock);
list_for_each_entry_safe(slot, tmp, &slot_list, list) {