#include <linux/pci.h>
#include <linux/module.h>
+#include <linux/pci-aspm.h>
#include "pci.h"
static void pci_free_resources(struct pci_dev *dev)
}
}
-static void pci_destroy_dev(struct pci_dev *dev)
+static void pci_stop_dev(struct pci_dev *dev)
{
- if (!list_empty(&dev->global_list)) {
+ if (dev->is_added) {
pci_proc_detach_device(dev);
pci_remove_sysfs_dev_files(dev);
device_unregister(&dev->dev);
- spin_lock(&pci_bus_lock);
- list_del(&dev->global_list);
- dev->global_list.next = dev->global_list.prev = NULL;
- spin_unlock(&pci_bus_lock);
+ dev->is_added = 0;
}
+ if (dev->bus->self)
+ pcie_aspm_exit_link_state(dev);
+}
+
+static void pci_destroy_dev(struct pci_dev *dev)
+{
/* Remove the device from the device lists, and prevent any further
* list accesses from this device */
- spin_lock(&pci_bus_lock);
+ down_write(&pci_bus_sem);
list_del(&dev->bus_list);
dev->bus_list.next = dev->bus_list.prev = NULL;
- spin_unlock(&pci_bus_lock);
+ up_write(&pci_bus_sem);
pci_free_resources(dev);
pci_dev_put(dev);
* in question is not being used by a driver.
* Returns 0 on success.
*/
+#if 0
int pci_remove_device_safe(struct pci_dev *dev)
{
if (pci_dev_driver(dev))
pci_destroy_dev(dev);
return 0;
}
-EXPORT_SYMBOL(pci_remove_device_safe);
+#endif /* 0 */
void pci_remove_bus(struct pci_bus *pci_bus)
{
pci_proc_detach_bus(pci_bus);
- spin_lock(&pci_bus_lock);
+ down_write(&pci_bus_sem);
list_del(&pci_bus->node);
- spin_unlock(&pci_bus_lock);
+ up_write(&pci_bus_sem);
+ if (!pci_bus->is_added)
+ return;
+
pci_remove_legacy_files(pci_bus);
- class_device_remove_file(&pci_bus->class_dev,
- &class_device_attr_cpuaffinity);
- sysfs_remove_link(&pci_bus->class_dev.kobj, "bridge");
- class_device_unregister(&pci_bus->class_dev);
+ device_remove_file(&pci_bus->dev, &dev_attr_cpuaffinity);
+ device_remove_file(&pci_bus->dev, &dev_attr_cpulistaffinity);
+ device_unregister(&pci_bus->dev);
}
EXPORT_SYMBOL(pci_remove_bus);
*/
void pci_remove_bus_device(struct pci_dev *dev)
{
+ pci_stop_bus_device(dev);
if (dev->subordinate) {
struct pci_bus *b = dev->subordinate;
{
struct list_head *l, *n;
- if (dev->subordinate) {
- list_for_each_safe(l, n, &dev->subordinate->devices) {
- struct pci_dev *dev = pci_dev_b(l);
+ if (dev->subordinate)
+ list_for_each_safe(l, n, &dev->subordinate->devices)
+ pci_remove_bus_device(pci_dev_b(l));
+}
+
+static void pci_stop_bus_devices(struct pci_bus *bus)
+{
+ struct list_head *l, *n;
- pci_remove_bus_device(dev);
- }
+ list_for_each_safe(l, n, &bus->devices) {
+ struct pci_dev *dev = pci_dev_b(l);
+ pci_stop_bus_device(dev);
}
}
+/**
+ * pci_stop_bus_device - stop a PCI device and any children
+ * @dev: the device to stop
+ *
+ * Stop a PCI device (detach the driver, remove from the global list
+ * and so on). This also stop any subordinate buses and children in a
+ * depth-first manner.
+ */
+void pci_stop_bus_device(struct pci_dev *dev)
+{
+ if (dev->subordinate)
+ pci_stop_bus_devices(dev->subordinate);
+
+ pci_stop_dev(dev);
+}
+
EXPORT_SYMBOL(pci_remove_bus_device);
EXPORT_SYMBOL(pci_remove_behind_bridge);
+EXPORT_SYMBOL_GPL(pci_stop_bus_device);