#include <linux/pci.h> #include <linux/module.h> #include "pci.h" static void pci_free_resources(struct pci_dev *dev) { int i; msi_remove_pci_irq_vectors(dev); pci_cleanup_rom(dev); for (i = 0; i < PCI_NUM_RESOURCES; i++) { struct resource *res = dev->resource + i; if (res->parent) release_resource(res); } } static void pci_destroy_dev(struct pci_dev *dev) { if (!list_empty(&dev->global_list)) { 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); } /* Remove the device from the device lists, and prevent any further * list accesses from this device */ spin_lock(&pci_bus_lock); list_del(&dev->bus_list); dev->bus_list.next = dev->bus_list.prev = NULL; spin_unlock(&pci_bus_lock); pci_free_resources(dev); pci_dev_put(dev); } /** * pci_remove_device_safe - remove an unused hotplug device * @dev: the device to remove * * Delete the device structure from the device lists and * notify userspace (/sbin/hotplug), but only if the device * in question is not being used by a driver. * Returns 0 on success. */ int pci_remove_device_safe(struct pci_dev *dev) { if (pci_dev_driver(dev)) return -EBUSY; pci_destroy_dev(dev); return 0; } EXPORT_SYMBOL(pci_remove_device_safe); void pci_remove_bus(struct pci_bus *pci_bus) { pci_proc_detach_bus(pci_bus); spin_lock(&pci_bus_lock); list_del(&pci_bus->node); spin_unlock(&pci_bus_lock); 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); } EXPORT_SYMBOL(pci_remove_bus); /** * pci_remove_bus_device - remove a PCI device and any children * @dev: the device to remove * * Remove a PCI device from the device lists, informing the drivers * that the device has been removed. We also remove any subordinate * buses and children in a depth-first manner. * * For each device we remove, delete the device structure from the * device lists, remove the /proc entry, and notify userspace * (/sbin/hotplug). */ void pci_remove_bus_device(struct pci_dev *dev) { if (dev->subordinate) { struct pci_bus *b = dev->subordinate; pci_remove_behind_bridge(dev); pci_remove_bus(b); dev->subordinate = NULL; } pci_destroy_dev(dev); } /** * pci_remove_behind_bridge - remove all devices behind a PCI bridge * @dev: PCI bridge device * * Remove all devices on the bus, except for the parent bridge. * This also removes any child buses, and any devices they may * contain in a depth-first manner. */ void pci_remove_behind_bridge(struct pci_dev *dev) { 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); pci_remove_bus_device(dev); } } } EXPORT_SYMBOL(pci_remove_bus_device); EXPORT_SYMBOL(pci_remove_behind_bridge);