Currently there's no PCI-related clean-up code
in acpi_pci_root_remove() function.
This patch introduces function for hostbridge removal.
Signed-off-by: Taku Izumi <izumi.taku@xxxxxxxxxxxxxx>
---
drivers/acpi/pci_bind.c | 7 +++++++
drivers/acpi/pci_root.c | 8 ++++++++
drivers/pci/remove.c | 18 +++++++++++++++++-
include/acpi/acpi_drivers.h | 1 +
include/linux/pci.h | 2 ++
5 files changed, 35 insertions(+), 1 deletion(-)
Index: Bjorn-next-0718/drivers/pci/remove.c
===================================================================
--- Bjorn-next-0718.orig/drivers/pci/remove.c
+++ Bjorn-next-0718/drivers/pci/remove.c
@@ -143,7 +143,7 @@ void pci_stop_and_remove_behind_bridge(s
__pci_remove_behind_bridge(dev);
}
-static void pci_stop_bus_devices(struct pci_bus *bus)
+void pci_stop_bus_devices(struct pci_bus *bus)
{
struct list_head *l, *n;
@@ -179,4 +179,20 @@ void pci_stop_bus_device(struct pci_dev
EXPORT_SYMBOL(pci_stop_and_remove_bus_device);
EXPORT_SYMBOL(pci_stop_and_remove_behind_bridge);
+EXPORT_SYMBOL(pci_stop_bus_devices);
EXPORT_SYMBOL_GPL(pci_stop_bus_device);
+
+void pci_remove_host_bridge(struct pci_host_bridge *bridge)
+{
+ struct list_head *l, *n;
+ struct pci_bus *root = bridge->bus;
+
+ list_for_each_safe(l, n, &root->devices)
+ __pci_remove_bus_device(pci_dev_b(l));
+
+ pci_remove_bus(root);
+
+ device_unregister(&bridge->dev);
+}
+EXPORT_SYMBOL(pci_remove_host_bridge);
+
Index: Bjorn-next-0718/drivers/acpi/pci_root.c
===================================================================
--- Bjorn-next-0718.orig/drivers/acpi/pci_root.c
+++ Bjorn-next-0718/drivers/acpi/pci_root.c
@@ -656,9 +656,12 @@ static int acpi_pci_root_remove(struct a
{
struct acpi_pci_root *root = acpi_driver_data(device);
struct acpi_pci_driver *driver;
+ struct pci_host_bridge *bridge = to_pci_host_bridge(root->bus->bridge);
mutex_lock(&acpi_pci_root_lock);
+ pci_stop_bus_devices(root->bus);
+
list_for_each_entry(driver, &acpi_pci_drivers, node)
if (driver->remove)
driver->remove(root->device->handle);
@@ -666,6 +669,11 @@ static int acpi_pci_root_remove(struct a
device_set_run_wake(root->bus->bridge, false);
pci_acpi_remove_bus_pm_notifier(device);
+ acpi_pci_irq_del_prt(root->bus);
+ acpi_pci_unbind_root(device);
+
+ pci_remove_host_bridge(bridge);
+
list_del_rcu(&root->node);
mutex_unlock(&acpi_pci_root_lock);
synchronize_rcu();
Index: Bjorn-next-0718/include/linux/pci.h
===================================================================
--- Bjorn-next-0718.orig/include/linux/pci.h
+++ Bjorn-next-0718/include/linux/pci.h
@@ -736,7 +736,9 @@ extern void pci_dev_put(struct pci_dev *
extern void pci_remove_bus(struct pci_bus *b);
extern void __pci_remove_bus_device(struct pci_dev *dev);
extern void pci_stop_and_remove_bus_device(struct pci_dev *dev);
+extern void pci_stop_bus_devices(struct pci_bus *bus);
extern void pci_stop_bus_device(struct pci_dev *dev);
+extern void pci_remove_host_bridge(struct pci_host_bridge *bridge);
void pci_setup_cardbus(struct pci_bus *bus);
extern void pci_sort_breadthfirst(void);
#define dev_is_pci(d) ((d)->bus == &pci_bus_type)
Index: Bjorn-next-0718/drivers/acpi/pci_bind.c
===================================================================
--- Bjorn-next-0718.orig/drivers/acpi/pci_bind.c
+++ Bjorn-next-0718/drivers/acpi/pci_bind.c
@@ -118,3 +118,10 @@ int acpi_pci_bind_root(struct acpi_devic
return 0;
}
+
+void acpi_pci_unbind_root(struct acpi_device *device)
+{
+ device->ops.bind = NULL;
+ device->ops.unbind = NULL;
+}
+
Index: Bjorn-next-0718/include/acpi/acpi_drivers.h
===================================================================
--- Bjorn-next-0718.orig/include/acpi/acpi_drivers.h
+++ Bjorn-next-0718/include/acpi/acpi_drivers.h
@@ -101,6 +101,7 @@ struct pci_bus;
struct pci_dev *acpi_get_pci_dev(acpi_handle);
int acpi_pci_bind_root(struct acpi_device *device);
+void acpi_pci_unbind_root(struct acpi_device *device);
/* Arch-defined function to add a bus to the system */
--
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