PCI/ACPI: Remove support of ACPI PCI subdrivers
Both sub-drivers of the "PCI Root Bridge ("pci_bridge")" driver, "acpiphp"
and "pci_slot", have been converted to hook directly into the PCI core.
With the conversions there are no remaining usages of the 'struct
acpi_pci_driver' list based infrastructure. This patch removes it.
Signed-off-by: Myron Stowe <myron.stowe@redhat.com>
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Yinghai Lu <yinghai@kernel.org>
Cc: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
Cc: Toshi Kani <toshi.kani@hp.com>diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c
index 0ac546d..b80e06e 100644
--- a/drivers/acpi/pci_root.c
+++ b/drivers/acpi/pci_root.c
@@ -65,44 +65,12 @@
.detach = acpi_pci_root_remove,
};
-/* Lock to protect both acpi_pci_roots and acpi_pci_drivers lists */
+/* Lock to protect both acpi_pci_roots lists */
static DEFINE_MUTEX(acpi_pci_root_lock);
static LIST_HEAD(acpi_pci_roots);
-static LIST_HEAD(acpi_pci_drivers);
static DEFINE_MUTEX(osc_lock);
-int acpi_pci_register_driver(struct acpi_pci_driver *driver)
-{
- int n = 0;
- struct acpi_pci_root *root;
-
- mutex_lock(&acpi_pci_root_lock);
- list_add_tail(&driver->node, &acpi_pci_drivers);
- if (driver->add)
- list_for_each_entry(root, &acpi_pci_roots, node) {
- driver->add(root);
- n++;
- }
- mutex_unlock(&acpi_pci_root_lock);
-
- return n;
-}
-EXPORT_SYMBOL(acpi_pci_register_driver);
-
-void acpi_pci_unregister_driver(struct acpi_pci_driver *driver)
-{
- struct acpi_pci_root *root;
-
- mutex_lock(&acpi_pci_root_lock);
- list_del(&driver->node);
- if (driver->remove)
- list_for_each_entry(root, &acpi_pci_roots, node)
- driver->remove(root);
- mutex_unlock(&acpi_pci_root_lock);
-}
-EXPORT_SYMBOL(acpi_pci_unregister_driver);
-
/**
* acpi_is_root_bridge - determine whether an ACPI CA node is a PCI root bridge
* @handle - the ACPI CA node in question.
@@ -413,7 +381,6 @@
acpi_status status;
int result;
struct acpi_pci_root *root;
- struct acpi_pci_driver *driver;
u32 flags, base_flags;
bool is_osc_granted = false;
@@ -573,12 +540,6 @@
pci_assign_unassigned_bus_resources(root->bus);
}
- mutex_lock(&acpi_pci_root_lock);
- list_for_each_entry(driver, &acpi_pci_drivers, node)
- if (driver->add)
- driver->add(root);
- mutex_unlock(&acpi_pci_root_lock);
-
/* need to after hot-added ioapic is registered */
if (system_state != SYSTEM_BOOTING)
pci_enable_bridges(root->bus);
@@ -599,16 +560,9 @@
static void acpi_pci_root_remove(struct acpi_device *device)
{
struct acpi_pci_root *root = acpi_driver_data(device);
- struct acpi_pci_driver *driver;
pci_stop_root_bus(root->bus);
- mutex_lock(&acpi_pci_root_lock);
- list_for_each_entry_reverse(driver, &acpi_pci_drivers, node)
- if (driver->remove)
- driver->remove(root);
- mutex_unlock(&acpi_pci_root_lock);
-
device_set_run_wake(root->bus->bridge, false);
pci_acpi_remove_bus_pm_notifier(device);
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index bcbdd74..03053ac 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -152,15 +152,6 @@
void acpi_pci_irq_disable (struct pci_dev *dev);
-struct acpi_pci_driver {
- struct list_head node;
- int (*add)(struct acpi_pci_root *root);
- void (*remove)(struct acpi_pci_root *root);
-};
-
-int acpi_pci_register_driver(struct acpi_pci_driver *driver);
-void acpi_pci_unregister_driver(struct acpi_pci_driver *driver);
-
extern int ec_read(u8 addr, u8 *val);
extern int ec_write(u8 addr, u8 val);
extern int ec_transaction(u8 command,