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)
37 /* Remove the device from the device lists, and prevent any further
38 * list accesses from this device */
39 down_write(&pci_bus_sem);
40 list_del(&dev->bus_list);
41 dev->bus_list.next = dev->bus_list.prev = NULL;
42 up_write(&pci_bus_sem);
44 pci_free_resources(dev);
49 * pci_remove_device_safe - remove an unused hotplug device
50 * @dev: the device to remove
52 * Delete the device structure from the device lists and
53 * notify userspace (/sbin/hotplug), but only if the device
54 * in question is not being used by a driver.
55 * Returns 0 on success.
58 int pci_remove_device_safe(struct pci_dev *dev)
60 if (pci_dev_driver(dev))
67 void pci_remove_bus(struct pci_bus *pci_bus)
69 pci_proc_detach_bus(pci_bus);
71 down_write(&pci_bus_sem);
72 list_del(&pci_bus->node);
73 up_write(&pci_bus_sem);
74 if (!pci_bus->is_added)
77 pci_remove_legacy_files(pci_bus);
78 device_remove_file(&pci_bus->dev, &dev_attr_cpuaffinity);
79 device_remove_file(&pci_bus->dev, &dev_attr_cpulistaffinity);
80 device_unregister(&pci_bus->dev);
82 EXPORT_SYMBOL(pci_remove_bus);
85 * pci_remove_bus_device - remove a PCI device and any children
86 * @dev: the device to remove
88 * Remove a PCI device from the device lists, informing the drivers
89 * that the device has been removed. We also remove any subordinate
90 * buses and children in a depth-first manner.
92 * For each device we remove, delete the device structure from the
93 * device lists, remove the /proc entry, and notify userspace
96 void pci_remove_bus_device(struct pci_dev *dev)
98 pci_stop_bus_device(dev);
99 if (dev->subordinate) {
100 struct pci_bus *b = dev->subordinate;
102 pci_remove_behind_bridge(dev);
104 dev->subordinate = NULL;
107 pci_destroy_dev(dev);
111 * pci_remove_behind_bridge - remove all devices behind a PCI bridge
112 * @dev: PCI bridge device
114 * Remove all devices on the bus, except for the parent bridge.
115 * This also removes any child buses, and any devices they may
116 * contain in a depth-first manner.
118 void pci_remove_behind_bridge(struct pci_dev *dev)
120 struct list_head *l, *n;
122 if (dev->subordinate)
123 list_for_each_safe(l, n, &dev->subordinate->devices)
124 pci_remove_bus_device(pci_dev_b(l));
127 static void pci_stop_bus_devices(struct pci_bus *bus)
129 struct list_head *l, *n;
131 list_for_each_safe(l, n, &bus->devices) {
132 struct pci_dev *dev = pci_dev_b(l);
133 pci_stop_bus_device(dev);
138 * pci_stop_bus_device - stop a PCI device and any children
139 * @dev: the device to stop
141 * Stop a PCI device (detach the driver, remove from the global list
142 * and so on). This also stop any subordinate buses and children in a
143 * depth-first manner.
145 void pci_stop_bus_device(struct pci_dev *dev)
147 if (dev->subordinate)
148 pci_stop_bus_devices(dev->subordinate);
153 EXPORT_SYMBOL(pci_remove_bus_device);
154 EXPORT_SYMBOL(pci_remove_behind_bridge);
155 EXPORT_SYMBOL_GPL(pci_stop_bus_device);