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 pci_remove_legacy_files(pci_bus
);
75 device_remove_file(&pci_bus
->dev
, &dev_attr_cpuaffinity
);
76 device_remove_file(&pci_bus
->dev
, &dev_attr_cpulistaffinity
);
77 device_unregister(&pci_bus
->dev
);
79 EXPORT_SYMBOL(pci_remove_bus
);
82 * pci_remove_bus_device - remove a PCI device and any children
83 * @dev: the device to remove
85 * Remove a PCI device from the device lists, informing the drivers
86 * that the device has been removed. We also remove any subordinate
87 * buses and children in a depth-first manner.
89 * For each device we remove, delete the device structure from the
90 * device lists, remove the /proc entry, and notify userspace
93 void pci_remove_bus_device(struct pci_dev
*dev
)
95 if (dev
->subordinate
) {
96 struct pci_bus
*b
= dev
->subordinate
;
98 pci_remove_behind_bridge(dev
);
100 dev
->subordinate
= NULL
;
103 pci_destroy_dev(dev
);
107 * pci_remove_behind_bridge - remove all devices behind a PCI bridge
108 * @dev: PCI bridge device
110 * Remove all devices on the bus, except for the parent bridge.
111 * This also removes any child buses, and any devices they may
112 * contain in a depth-first manner.
114 void pci_remove_behind_bridge(struct pci_dev
*dev
)
116 struct list_head
*l
, *n
;
118 if (dev
->subordinate
)
119 list_for_each_safe(l
, n
, &dev
->subordinate
->devices
)
120 pci_remove_bus_device(pci_dev_b(l
));
123 static void pci_stop_bus_devices(struct pci_bus
*bus
)
125 struct list_head
*l
, *n
;
127 list_for_each_safe(l
, n
, &bus
->devices
) {
128 struct pci_dev
*dev
= pci_dev_b(l
);
129 pci_stop_bus_device(dev
);
134 * pci_stop_bus_device - stop a PCI device and any children
135 * @dev: the device to stop
137 * Stop a PCI device (detach the driver, remove from the global list
138 * and so on). This also stop any subordinate buses and children in a
139 * depth-first manner.
141 void pci_stop_bus_device(struct pci_dev
*dev
)
143 if (dev
->subordinate
)
144 pci_stop_bus_devices(dev
->subordinate
);
149 EXPORT_SYMBOL(pci_remove_bus_device
);
150 EXPORT_SYMBOL(pci_remove_behind_bridge
);
151 EXPORT_SYMBOL_GPL(pci_stop_bus_device
);
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