2 #include <linux/module.h>
3 #include <linux/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)
22 if (!dev->global_list.next)
25 if (!list_empty(&dev->global_list)) {
26 pci_proc_detach_device(dev);
27 pci_remove_sysfs_dev_files(dev);
28 device_unregister(&dev->dev);
29 down_write(&pci_bus_sem);
30 list_del(&dev->global_list);
31 dev->global_list.next = dev->global_list.prev = NULL;
32 up_write(&pci_bus_sem);
36 pcie_aspm_exit_link_state(dev);
39 static void pci_destroy_dev(struct pci_dev *dev)
43 /* Remove the device from the device lists, and prevent any further
44 * list accesses from this device */
45 down_write(&pci_bus_sem);
46 list_del(&dev->bus_list);
47 dev->bus_list.next = dev->bus_list.prev = NULL;
48 up_write(&pci_bus_sem);
50 pci_free_resources(dev);
55 * pci_remove_device_safe - remove an unused hotplug device
56 * @dev: the device to remove
58 * Delete the device structure from the device lists and
59 * notify userspace (/sbin/hotplug), but only if the device
60 * in question is not being used by a driver.
61 * Returns 0 on success.
64 int pci_remove_device_safe(struct pci_dev *dev)
66 if (pci_dev_driver(dev))
73 void pci_remove_bus(struct pci_bus *pci_bus)
75 pci_proc_detach_bus(pci_bus);
77 down_write(&pci_bus_sem);
78 list_del(&pci_bus->node);
79 up_write(&pci_bus_sem);
80 pci_remove_legacy_files(pci_bus);
81 class_device_remove_file(&pci_bus->class_dev,
82 &class_device_attr_cpuaffinity);
83 sysfs_remove_link(&pci_bus->class_dev.kobj, "bridge");
84 class_device_unregister(&pci_bus->class_dev);
86 EXPORT_SYMBOL(pci_remove_bus);
89 * pci_remove_bus_device - remove a PCI device and any children
90 * @dev: the device to remove
92 * Remove a PCI device from the device lists, informing the drivers
93 * that the device has been removed. We also remove any subordinate
94 * buses and children in a depth-first manner.
96 * For each device we remove, delete the device structure from the
97 * device lists, remove the /proc entry, and notify userspace
100 void pci_remove_bus_device(struct pci_dev *dev)
102 if (dev->subordinate) {
103 struct pci_bus *b = dev->subordinate;
105 pci_remove_behind_bridge(dev);
107 dev->subordinate = NULL;
110 pci_destroy_dev(dev);
114 * pci_remove_behind_bridge - remove all devices behind a PCI bridge
115 * @dev: PCI bridge device
117 * Remove all devices on the bus, except for the parent bridge.
118 * This also removes any child buses, and any devices they may
119 * contain in a depth-first manner.
121 void pci_remove_behind_bridge(struct pci_dev *dev)
123 struct list_head *l, *n;
125 if (dev->subordinate) {
126 list_for_each_safe(l, n, &dev->subordinate->devices) {
127 struct pci_dev *dev = pci_dev_b(l);
129 pci_remove_bus_device(dev);
134 static void pci_stop_bus_devices(struct pci_bus *bus)
136 struct list_head *l, *n;
138 list_for_each_safe(l, n, &bus->devices) {
139 struct pci_dev *dev = pci_dev_b(l);
140 pci_stop_bus_device(dev);
145 * pci_stop_bus_device - stop a PCI device and any children
146 * @dev: the device to stop
148 * Stop a PCI device (detach the driver, remove from the global list
149 * and so on). This also stop any subordinate buses and children in a
150 * depth-first manner.
152 void pci_stop_bus_device(struct pci_dev *dev)
154 if (dev->subordinate)
155 pci_stop_bus_devices(dev->subordinate);
160 EXPORT_SYMBOL(pci_remove_bus_device);
161 EXPORT_SYMBOL(pci_remove_behind_bridge);
162 EXPORT_SYMBOL_GPL(pci_stop_bus_device);