2 * drivers/pci/pci-driver.c
4 * (C) Copyright 2002-2004, 2007 Greg Kroah-Hartman <greg@kroah.com>
5 * (C) Copyright 2007 Novell Inc.
7 * Released under the GPL v2 only.
11 #include <linux/pci.h>
12 #include <linux/module.h>
13 #include <linux/init.h>
14 #include <linux/device.h>
15 #include <linux/mempolicy.h>
16 #include <linux/string.h>
17 #include <linux/slab.h>
18 #include <linux/sched.h>
19 #include <linux/cpu.h>
23 * Dynamic device IDs are disabled for !CONFIG_HOTPLUG
27 struct list_head node;
28 struct pci_device_id id;
34 * store_new_id - add a new PCI device ID to this driver and re-probe devices
35 * @driver: target device driver
36 * @buf: buffer for scanning device ID data
39 * Adds a new dynamic pci device ID to this driver,
40 * and causes the driver to probe for all devices again.
43 store_new_id(struct device_driver *driver, const char *buf, size_t count)
45 struct pci_dynid *dynid;
46 struct pci_driver *pdrv = to_pci_driver(driver);
47 const struct pci_device_id *ids = pdrv->id_table;
48 __u32 vendor, device, subvendor=PCI_ANY_ID,
49 subdevice=PCI_ANY_ID, class=0, class_mask=0;
50 unsigned long driver_data=0;
54 fields = sscanf(buf, "%x %x %x %x %x %x %lx",
55 &vendor, &device, &subvendor, &subdevice,
56 &class, &class_mask, &driver_data);
60 /* Only accept driver_data values that match an existing id_table
64 while (ids->vendor || ids->subvendor || ids->class_mask) {
65 if (driver_data == ids->driver_data) {
71 if (retval) /* No match */
75 dynid = kzalloc(sizeof(*dynid), GFP_KERNEL);
79 dynid->id.vendor = vendor;
80 dynid->id.device = device;
81 dynid->id.subvendor = subvendor;
82 dynid->id.subdevice = subdevice;
83 dynid->id.class = class;
84 dynid->id.class_mask = class_mask;
85 dynid->id.driver_data = driver_data;
87 spin_lock(&pdrv->dynids.lock);
88 list_add_tail(&dynid->node, &pdrv->dynids.list);
89 spin_unlock(&pdrv->dynids.lock);
91 if (get_driver(&pdrv->driver)) {
92 retval = driver_attach(&pdrv->driver);
93 put_driver(&pdrv->driver);
100 static DRIVER_ATTR(new_id, S_IWUSR, NULL, store_new_id);
103 pci_free_dynids(struct pci_driver *drv)
105 struct pci_dynid *dynid, *n;
107 spin_lock(&drv->dynids.lock);
108 list_for_each_entry_safe(dynid, n, &drv->dynids.list, node) {
109 list_del(&dynid->node);
112 spin_unlock(&drv->dynids.lock);
116 pci_create_newid_file(struct pci_driver *drv)
119 if (drv->probe != NULL)
120 error = driver_create_file(&drv->driver, &driver_attr_new_id);
124 static void pci_remove_newid_file(struct pci_driver *drv)
126 driver_remove_file(&drv->driver, &driver_attr_new_id);
128 #else /* !CONFIG_HOTPLUG */
129 static inline void pci_free_dynids(struct pci_driver *drv) {}
130 static inline int pci_create_newid_file(struct pci_driver *drv)
134 static inline void pci_remove_newid_file(struct pci_driver *drv) {}
138 * pci_match_id - See if a pci device matches a given pci_id table
139 * @ids: array of PCI device id structures to search in
140 * @dev: the PCI device structure to match against.
142 * Used by a driver to check whether a PCI device present in the
143 * system is in its list of supported devices. Returns the matching
144 * pci_device_id structure or %NULL if there is no match.
146 * Deprecated, don't use this as it will not catch any dynamic ids
147 * that a driver might want to check for.
149 const struct pci_device_id *pci_match_id(const struct pci_device_id *ids,
153 while (ids->vendor || ids->subvendor || ids->class_mask) {
154 if (pci_match_one_device(ids, dev))
163 * pci_match_device - Tell if a PCI device structure has a matching PCI device id structure
164 * @drv: the PCI driver to match against
165 * @dev: the PCI device structure to match against
167 * Used by a driver to check whether a PCI device present in the
168 * system is in its list of supported devices. Returns the matching
169 * pci_device_id structure or %NULL if there is no match.
171 static const struct pci_device_id *pci_match_device(struct pci_driver *drv,
174 struct pci_dynid *dynid;
176 /* Look at the dynamic ids first, before the static ones */
177 spin_lock(&drv->dynids.lock);
178 list_for_each_entry(dynid, &drv->dynids.list, node) {
179 if (pci_match_one_device(&dynid->id, dev)) {
180 spin_unlock(&drv->dynids.lock);
184 spin_unlock(&drv->dynids.lock);
186 return pci_match_id(drv->id_table, dev);
189 struct drv_dev_and_id {
190 struct pci_driver *drv;
192 const struct pci_device_id *id;
195 static long local_pci_probe(void *_ddi)
197 struct drv_dev_and_id *ddi = _ddi;
199 return ddi->drv->probe(ddi->dev, ddi->id);
202 static int pci_call_probe(struct pci_driver *drv, struct pci_dev *dev,
203 const struct pci_device_id *id)
206 struct drv_dev_and_id ddi = { drv, dev, id };
208 /* Execute driver initialization on node where the device's
209 bus is attached to. This way the driver likely allocates
210 its local memory on the right node without any need to
212 node = dev_to_node(&dev->dev);
217 cpu = cpumask_any_and(cpumask_of_node(node), cpu_online_mask);
218 if (cpu < nr_cpu_ids)
219 error = work_on_cpu(cpu, local_pci_probe, &ddi);
221 error = local_pci_probe(&ddi);
224 error = local_pci_probe(&ddi);
229 * __pci_device_probe()
230 * @drv: driver to call to check if it wants the PCI device
231 * @pci_dev: PCI device being probed
233 * returns 0 on success, else error.
234 * side-effect: pci_dev->driver is set to drv when drv claims pci_dev.
237 __pci_device_probe(struct pci_driver *drv, struct pci_dev *pci_dev)
239 const struct pci_device_id *id;
242 if (!pci_dev->driver && drv->probe) {
245 id = pci_match_device(drv, pci_dev);
247 error = pci_call_probe(drv, pci_dev, id);
249 pci_dev->driver = drv;
256 static int pci_device_probe(struct device * dev)
259 struct pci_driver *drv;
260 struct pci_dev *pci_dev;
262 drv = to_pci_driver(dev->driver);
263 pci_dev = to_pci_dev(dev);
264 pci_dev_get(pci_dev);
265 error = __pci_device_probe(drv, pci_dev);
267 pci_dev_put(pci_dev);
272 static int pci_device_remove(struct device * dev)
274 struct pci_dev * pci_dev = to_pci_dev(dev);
275 struct pci_driver * drv = pci_dev->driver;
279 drv->remove(pci_dev);
280 pci_dev->driver = NULL;
284 * If the device is still on, set the power state as "unknown",
285 * since it might change by the next time we load the driver.
287 if (pci_dev->current_state == PCI_D0)
288 pci_dev->current_state = PCI_UNKNOWN;
291 * We would love to complain here if pci_dev->is_enabled is set, that
292 * the driver should have called pci_disable_device(), but the
293 * unfortunate fact is there are too many odd BIOS and bridge setups
294 * that don't like drivers doing that all of the time.
295 * Oh well, we can dream of sane hardware when we sleep, no matter how
296 * horrible the crap we have to deal with is when we are awake...
299 pci_dev_put(pci_dev);
303 static void pci_device_shutdown(struct device *dev)
305 struct pci_dev *pci_dev = to_pci_dev(dev);
306 struct pci_driver *drv = pci_dev->driver;
308 if (drv && drv->shutdown)
309 drv->shutdown(pci_dev);
310 pci_msi_shutdown(pci_dev);
311 pci_msix_shutdown(pci_dev);
314 #ifdef CONFIG_PM_SLEEP
317 * Default "suspend" method for devices that have no driver provided suspend,
318 * or not even a driver at all (second part).
320 static void pci_pm_set_unknown_state(struct pci_dev *pci_dev)
323 * mark its power state as "unknown", since we don't know if
324 * e.g. the BIOS will change its device state when we suspend.
326 if (pci_dev->current_state == PCI_D0)
327 pci_dev->current_state = PCI_UNKNOWN;
331 * Default "resume" method for devices that have no driver provided resume,
332 * or not even a driver at all (second part).
334 static int pci_pm_reenable_device(struct pci_dev *pci_dev)
338 /* if the device was enabled before suspend, reenable */
339 retval = pci_reenable_device(pci_dev);
341 * if the device was busmaster before the suspend, make it busmaster
344 if (pci_dev->is_busmaster)
345 pci_set_master(pci_dev);
350 static int pci_legacy_suspend(struct device *dev, pm_message_t state)
352 struct pci_dev * pci_dev = to_pci_dev(dev);
353 struct pci_driver * drv = pci_dev->driver;
356 if (drv && drv->suspend) {
357 pci_power_t prev = pci_dev->current_state;
359 pci_dev->state_saved = false;
361 i = drv->suspend(pci_dev, state);
362 suspend_report_result(drv->suspend, i);
366 if (pci_dev->state_saved)
369 if (pci_dev->current_state != PCI_D0
370 && pci_dev->current_state != PCI_UNKNOWN) {
371 WARN_ONCE(pci_dev->current_state != prev,
372 "PCI PM: Device state not saved by %pF\n",
378 pci_save_state(pci_dev);
380 * This is for compatibility with existing code with legacy PM support.
382 pci_pm_set_unknown_state(pci_dev);
385 pci_fixup_device(pci_fixup_suspend, pci_dev);
390 static int pci_legacy_suspend_late(struct device *dev, pm_message_t state)
392 struct pci_dev * pci_dev = to_pci_dev(dev);
393 struct pci_driver * drv = pci_dev->driver;
396 if (drv && drv->suspend_late) {
397 i = drv->suspend_late(pci_dev, state);
398 suspend_report_result(drv->suspend_late, i);
403 static int pci_legacy_resume_early(struct device *dev)
405 struct pci_dev * pci_dev = to_pci_dev(dev);
406 struct pci_driver * drv = pci_dev->driver;
408 return drv && drv->resume_early ?
409 drv->resume_early(pci_dev) : 0;
412 static int pci_legacy_resume(struct device *dev)
414 struct pci_dev * pci_dev = to_pci_dev(dev);
415 struct pci_driver * drv = pci_dev->driver;
417 pci_fixup_device(pci_fixup_resume, pci_dev);
419 return drv && drv->resume ?
420 drv->resume(pci_dev) : pci_pm_reenable_device(pci_dev);
423 /* Auxiliary functions used by the new power management framework */
425 static void pci_pm_default_resume_noirq(struct pci_dev *pci_dev)
427 pci_restore_standard_config(pci_dev);
428 pci_dev->state_saved = false;
429 pci_fixup_device(pci_fixup_resume_early, pci_dev);
432 static void pci_pm_default_resume(struct pci_dev *pci_dev)
434 pci_fixup_device(pci_fixup_resume, pci_dev);
436 if (!pci_is_bridge(pci_dev))
437 pci_enable_wake(pci_dev, PCI_D0, false);
440 static void pci_pm_default_suspend(struct pci_dev *pci_dev)
442 /* Disable non-bridge devices without PM support */
443 if (!pci_is_bridge(pci_dev))
444 pci_disable_enabled_device(pci_dev);
445 pci_save_state(pci_dev);
448 static bool pci_has_legacy_pm_support(struct pci_dev *pci_dev)
450 struct pci_driver *drv = pci_dev->driver;
451 bool ret = drv && (drv->suspend || drv->suspend_late || drv->resume
452 || drv->resume_early);
455 * Legacy PM support is used by default, so warn if the new framework is
456 * supported as well. Drivers are supposed to support either the
457 * former, or the latter, but not both at the same time.
459 WARN_ON(ret && drv->driver.pm);
464 /* New power management framework */
466 static int pci_pm_prepare(struct device *dev)
468 struct device_driver *drv = dev->driver;
471 if (drv && drv->pm && drv->pm->prepare)
472 error = drv->pm->prepare(dev);
477 static void pci_pm_complete(struct device *dev)
479 struct device_driver *drv = dev->driver;
481 if (drv && drv->pm && drv->pm->complete)
482 drv->pm->complete(dev);
485 #ifdef CONFIG_SUSPEND
487 static int pci_pm_suspend(struct device *dev)
489 struct pci_dev *pci_dev = to_pci_dev(dev);
490 struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
492 if (pci_has_legacy_pm_support(pci_dev))
493 return pci_legacy_suspend(dev, PMSG_SUSPEND);
496 pci_pm_default_suspend(pci_dev);
500 pci_dev->state_saved = false;
503 pci_power_t prev = pci_dev->current_state;
506 error = pm->suspend(dev);
507 suspend_report_result(pm->suspend, error);
511 if (pci_dev->state_saved)
514 if (pci_dev->current_state != PCI_D0
515 && pci_dev->current_state != PCI_UNKNOWN) {
516 WARN_ONCE(pci_dev->current_state != prev,
517 "PCI PM: State of device not saved by %pF\n",
523 if (!pci_dev->state_saved) {
524 pci_save_state(pci_dev);
525 if (!pci_is_bridge(pci_dev))
526 pci_prepare_to_sleep(pci_dev);
530 pci_fixup_device(pci_fixup_suspend, pci_dev);
535 static int pci_pm_suspend_noirq(struct device *dev)
537 struct pci_dev *pci_dev = to_pci_dev(dev);
538 struct device_driver *drv = dev->driver;
541 if (pci_has_legacy_pm_support(pci_dev))
542 return pci_legacy_suspend_late(dev, PMSG_SUSPEND);
544 if (drv && drv->pm && drv->pm->suspend_noirq) {
545 error = drv->pm->suspend_noirq(dev);
546 suspend_report_result(drv->pm->suspend_noirq, error);
550 pci_pm_set_unknown_state(pci_dev);
555 static int pci_pm_resume_noirq(struct device *dev)
557 struct pci_dev *pci_dev = to_pci_dev(dev);
558 struct device_driver *drv = dev->driver;
561 pci_pm_default_resume_noirq(pci_dev);
563 if (pci_has_legacy_pm_support(pci_dev))
564 return pci_legacy_resume_early(dev);
566 if (drv && drv->pm && drv->pm->resume_noirq)
567 error = drv->pm->resume_noirq(dev);
572 static int pci_pm_resume(struct device *dev)
574 struct pci_dev *pci_dev = to_pci_dev(dev);
575 struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
579 * This is necessary for the suspend error path in which resume is
580 * called without restoring the standard config registers of the device.
582 if (pci_dev->state_saved)
583 pci_restore_standard_config(pci_dev);
585 if (pci_has_legacy_pm_support(pci_dev))
586 return pci_legacy_resume(dev);
588 pci_pm_default_resume(pci_dev);
592 error = pm->resume(dev);
594 pci_pm_reenable_device(pci_dev);
600 #else /* !CONFIG_SUSPEND */
602 #define pci_pm_suspend NULL
603 #define pci_pm_suspend_noirq NULL
604 #define pci_pm_resume NULL
605 #define pci_pm_resume_noirq NULL
607 #endif /* !CONFIG_SUSPEND */
609 #ifdef CONFIG_HIBERNATION
611 static int pci_pm_freeze(struct device *dev)
613 struct pci_dev *pci_dev = to_pci_dev(dev);
614 struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
616 if (pci_has_legacy_pm_support(pci_dev))
617 return pci_legacy_suspend(dev, PMSG_FREEZE);
620 pci_pm_default_suspend(pci_dev);
624 pci_dev->state_saved = false;
629 error = pm->freeze(dev);
630 suspend_report_result(pm->freeze, error);
635 if (!pci_dev->state_saved)
636 pci_save_state(pci_dev);
641 static int pci_pm_freeze_noirq(struct device *dev)
643 struct pci_dev *pci_dev = to_pci_dev(dev);
644 struct device_driver *drv = dev->driver;
647 if (pci_has_legacy_pm_support(pci_dev))
648 return pci_legacy_suspend_late(dev, PMSG_FREEZE);
650 if (drv && drv->pm && drv->pm->freeze_noirq) {
651 error = drv->pm->freeze_noirq(dev);
652 suspend_report_result(drv->pm->freeze_noirq, error);
656 pci_pm_set_unknown_state(pci_dev);
661 static int pci_pm_thaw_noirq(struct device *dev)
663 struct pci_dev *pci_dev = to_pci_dev(dev);
664 struct device_driver *drv = dev->driver;
667 if (pci_has_legacy_pm_support(pci_dev))
668 return pci_legacy_resume_early(dev);
670 pci_update_current_state(pci_dev, PCI_D0);
672 if (drv && drv->pm && drv->pm->thaw_noirq)
673 error = drv->pm->thaw_noirq(dev);
678 static int pci_pm_thaw(struct device *dev)
680 struct pci_dev *pci_dev = to_pci_dev(dev);
681 struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
684 if (pci_has_legacy_pm_support(pci_dev))
685 return pci_legacy_resume(dev);
689 error = pm->thaw(dev);
691 pci_pm_reenable_device(pci_dev);
697 static int pci_pm_poweroff(struct device *dev)
699 struct pci_dev *pci_dev = to_pci_dev(dev);
700 struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
703 if (pci_has_legacy_pm_support(pci_dev))
704 return pci_legacy_suspend(dev, PMSG_HIBERNATE);
707 pci_pm_default_suspend(pci_dev);
711 pci_dev->state_saved = false;
714 error = pm->poweroff(dev);
715 suspend_report_result(pm->poweroff, error);
718 if (!pci_dev->state_saved && !pci_is_bridge(pci_dev))
719 pci_prepare_to_sleep(pci_dev);
722 pci_fixup_device(pci_fixup_suspend, pci_dev);
727 static int pci_pm_poweroff_noirq(struct device *dev)
729 struct device_driver *drv = dev->driver;
732 if (pci_has_legacy_pm_support(to_pci_dev(dev)))
733 return pci_legacy_suspend_late(dev, PMSG_HIBERNATE);
735 if (drv && drv->pm && drv->pm->poweroff_noirq) {
736 error = drv->pm->poweroff_noirq(dev);
737 suspend_report_result(drv->pm->poweroff_noirq, error);
743 static int pci_pm_restore_noirq(struct device *dev)
745 struct pci_dev *pci_dev = to_pci_dev(dev);
746 struct device_driver *drv = dev->driver;
749 pci_pm_default_resume_noirq(pci_dev);
751 if (pci_has_legacy_pm_support(pci_dev))
752 return pci_legacy_resume_early(dev);
754 if (drv && drv->pm && drv->pm->restore_noirq)
755 error = drv->pm->restore_noirq(dev);
760 static int pci_pm_restore(struct device *dev)
762 struct pci_dev *pci_dev = to_pci_dev(dev);
763 struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
767 * This is necessary for the hibernation error path in which restore is
768 * called without restoring the standard config registers of the device.
770 if (pci_dev->state_saved)
771 pci_restore_standard_config(pci_dev);
773 if (pci_has_legacy_pm_support(pci_dev))
774 return pci_legacy_resume(dev);
776 pci_pm_default_resume(pci_dev);
780 error = pm->restore(dev);
782 pci_pm_reenable_device(pci_dev);
788 #else /* !CONFIG_HIBERNATION */
790 #define pci_pm_freeze NULL
791 #define pci_pm_freeze_noirq NULL
792 #define pci_pm_thaw NULL
793 #define pci_pm_thaw_noirq NULL
794 #define pci_pm_poweroff NULL
795 #define pci_pm_poweroff_noirq NULL
796 #define pci_pm_restore NULL
797 #define pci_pm_restore_noirq NULL
799 #endif /* !CONFIG_HIBERNATION */
801 struct dev_pm_ops pci_dev_pm_ops = {
802 .prepare = pci_pm_prepare,
803 .complete = pci_pm_complete,
804 .suspend = pci_pm_suspend,
805 .resume = pci_pm_resume,
806 .freeze = pci_pm_freeze,
808 .poweroff = pci_pm_poweroff,
809 .restore = pci_pm_restore,
810 .suspend_noirq = pci_pm_suspend_noirq,
811 .resume_noirq = pci_pm_resume_noirq,
812 .freeze_noirq = pci_pm_freeze_noirq,
813 .thaw_noirq = pci_pm_thaw_noirq,
814 .poweroff_noirq = pci_pm_poweroff_noirq,
815 .restore_noirq = pci_pm_restore_noirq,
818 #define PCI_PM_OPS_PTR (&pci_dev_pm_ops)
820 #else /* !CONFIG_PM_SLEEP */
822 #define PCI_PM_OPS_PTR NULL
824 #endif /* !CONFIG_PM_SLEEP */
827 * __pci_register_driver - register a new pci driver
828 * @drv: the driver structure to register
829 * @owner: owner module of drv
830 * @mod_name: module name string
832 * Adds the driver structure to the list of registered drivers.
833 * Returns a negative value on error, otherwise 0.
834 * If no error occurred, the driver remains registered even if
835 * no device was claimed during registration.
837 int __pci_register_driver(struct pci_driver *drv, struct module *owner,
838 const char *mod_name)
842 /* initialize common driver fields */
843 drv->driver.name = drv->name;
844 drv->driver.bus = &pci_bus_type;
845 drv->driver.owner = owner;
846 drv->driver.mod_name = mod_name;
848 spin_lock_init(&drv->dynids.lock);
849 INIT_LIST_HEAD(&drv->dynids.list);
851 /* register with core */
852 error = driver_register(&drv->driver);
856 error = pci_create_newid_file(drv);
858 driver_unregister(&drv->driver);
864 * pci_unregister_driver - unregister a pci driver
865 * @drv: the driver structure to unregister
867 * Deletes the driver structure from the list of registered PCI drivers,
868 * gives it a chance to clean up by calling its remove() function for
869 * each device it was responsible for, and marks those devices as
874 pci_unregister_driver(struct pci_driver *drv)
876 pci_remove_newid_file(drv);
877 driver_unregister(&drv->driver);
878 pci_free_dynids(drv);
881 static struct pci_driver pci_compat_driver = {
886 * pci_dev_driver - get the pci_driver of a device
887 * @dev: the device to query
889 * Returns the appropriate pci_driver structure or %NULL if there is no
890 * registered driver for the device.
893 pci_dev_driver(const struct pci_dev *dev)
899 for(i=0; i<=PCI_ROM_RESOURCE; i++)
900 if (dev->resource[i].flags & IORESOURCE_BUSY)
901 return &pci_compat_driver;
907 * pci_bus_match - Tell if a PCI device structure has a matching PCI device id structure
908 * @dev: the PCI device structure to match against
909 * @drv: the device driver to search for matching PCI device id structures
911 * Used by a driver to check whether a PCI device present in the
912 * system is in its list of supported devices. Returns the matching
913 * pci_device_id structure or %NULL if there is no match.
915 static int pci_bus_match(struct device *dev, struct device_driver *drv)
917 struct pci_dev *pci_dev = to_pci_dev(dev);
918 struct pci_driver *pci_drv = to_pci_driver(drv);
919 const struct pci_device_id *found_id;
921 found_id = pci_match_device(pci_drv, pci_dev);
929 * pci_dev_get - increments the reference count of the pci device structure
930 * @dev: the device being referenced
932 * Each live reference to a device should be refcounted.
934 * Drivers for PCI devices should normally record such references in
935 * their probe() methods, when they bind to a device, and release
936 * them by calling pci_dev_put(), in their disconnect() methods.
938 * A pointer to the device with the incremented reference counter is returned.
940 struct pci_dev *pci_dev_get(struct pci_dev *dev)
943 get_device(&dev->dev);
948 * pci_dev_put - release a use of the pci device structure
949 * @dev: device that's been disconnected
951 * Must be called when a user of a device is finished with it. When the last
952 * user of the device calls this function, the memory of the device is freed.
954 void pci_dev_put(struct pci_dev *dev)
957 put_device(&dev->dev);
960 #ifndef CONFIG_HOTPLUG
961 int pci_uevent(struct device *dev, struct kobj_uevent_env *env)
967 struct bus_type pci_bus_type = {
969 .match = pci_bus_match,
970 .uevent = pci_uevent,
971 .probe = pci_device_probe,
972 .remove = pci_device_remove,
973 .shutdown = pci_device_shutdown,
974 .dev_attrs = pci_dev_attrs,
975 .pm = PCI_PM_OPS_PTR,
978 static int __init pci_driver_init(void)
980 return bus_register(&pci_bus_type);
983 postcore_initcall(pci_driver_init);
985 EXPORT_SYMBOL(pci_match_id);
986 EXPORT_SYMBOL(__pci_register_driver);
987 EXPORT_SYMBOL(pci_unregister_driver);
988 EXPORT_SYMBOL(pci_dev_driver);
989 EXPORT_SYMBOL(pci_bus_type);
990 EXPORT_SYMBOL(pci_dev_get);
991 EXPORT_SYMBOL(pci_dev_put);