2 #include <linux/module.h>
3 #include <linux/pci-aspm.h>
6 static void pci_free_resources(struct pci_dev *dev)
10 msi_remove_pci_irq_vectors(dev);
13 for (i = 0; i < PCI_NUM_RESOURCES; i++) {
14 struct resource *res = dev->resource + i;
16 release_resource(res);
20 static void pci_stop_dev(struct pci_dev *dev)
23 pci_proc_detach_device(dev);
24 pci_remove_sysfs_dev_files(dev);
25 device_unregister(&dev->dev);
30 pcie_aspm_exit_link_state(dev);
33 static void pci_destroy_dev(struct pci_dev *dev)
35 down_write(&pci_bus_sem);
36 list_del(&dev->bus_list);
37 up_write(&pci_bus_sem);
39 pci_free_resources(dev);
43 void pci_remove_bus(struct pci_bus *bus)
45 pci_proc_detach_bus(bus);
47 down_write(&pci_bus_sem);
49 pci_bus_release_busn_res(bus);
50 up_write(&pci_bus_sem);
54 pci_remove_legacy_files(bus);
55 device_unregister(&bus->dev);
57 EXPORT_SYMBOL(pci_remove_bus);
59 static void pci_stop_bus_device(struct pci_dev *dev)
61 struct pci_bus *bus = dev->subordinate;
62 struct pci_dev *child, *tmp;
65 * Stopping an SR-IOV PF device removes all the associated VFs,
66 * which will update the bus->devices list and confuse the
67 * iterator. Therefore, iterate in reverse so we remove the VFs
71 list_for_each_entry_safe_reverse(child, tmp,
72 &bus->devices, bus_list)
73 pci_stop_bus_device(child);
79 static void pci_remove_bus_device(struct pci_dev *dev)
81 struct pci_bus *bus = dev->subordinate;
82 struct pci_dev *child, *tmp;
85 list_for_each_entry_safe(child, tmp,
86 &bus->devices, bus_list)
87 pci_remove_bus_device(child);
90 dev->subordinate = NULL;
97 * pci_stop_and_remove_bus_device - remove a PCI device and any children
98 * @dev: the device to remove
100 * Remove a PCI device from the device lists, informing the drivers
101 * that the device has been removed. We also remove any subordinate
102 * buses and children in a depth-first manner.
104 * For each device we remove, delete the device structure from the
105 * device lists, remove the /proc entry, and notify userspace
108 void pci_stop_and_remove_bus_device(struct pci_dev *dev)
110 pci_stop_bus_device(dev);
111 pci_remove_bus_device(dev);
113 EXPORT_SYMBOL(pci_stop_and_remove_bus_device);