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path: root/drivers/base/bus.c
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Diffstat (limited to 'drivers/base/bus.c')
-rw-r--r--drivers/base/bus.c28
1 files changed, 19 insertions, 9 deletions
diff --git a/drivers/base/bus.c b/drivers/base/bus.c
index 76656acd00d4..050d86d0b872 100644
--- a/drivers/base/bus.c
+++ b/drivers/base/bus.c
@@ -362,8 +362,7 @@ static void device_remove_attrs(struct bus_type * bus, struct device * dev)
362 * @dev: device being added 362 * @dev: device being added
363 * 363 *
364 * - Add the device to its bus's list of devices. 364 * - Add the device to its bus's list of devices.
365 * - Try to attach to driver. 365 * - Create link to device's bus.
366 * - Create link to device's physical location.
367 */ 366 */
368int bus_add_device(struct device * dev) 367int bus_add_device(struct device * dev)
369{ 368{
@@ -372,11 +371,10 @@ int bus_add_device(struct device * dev)
372 371
373 if (bus) { 372 if (bus) {
374 pr_debug("bus %s: add device %s\n", bus->name, dev->bus_id); 373 pr_debug("bus %s: add device %s\n", bus->name, dev->bus_id);
375 device_attach(dev);
376 klist_add_tail(&dev->knode_bus, &bus->klist_devices);
377 error = device_add_attrs(bus, dev); 374 error = device_add_attrs(bus, dev);
378 if (!error) { 375 if (!error) {
379 sysfs_create_link(&bus->devices.kobj, &dev->kobj, dev->bus_id); 376 sysfs_create_link(&bus->devices.kobj, &dev->kobj, dev->bus_id);
377 sysfs_create_link(&dev->kobj, &dev->bus->subsys.kset.kobj, "subsystem");
380 sysfs_create_link(&dev->kobj, &dev->bus->subsys.kset.kobj, "bus"); 378 sysfs_create_link(&dev->kobj, &dev->bus->subsys.kset.kobj, "bus");
381 } 379 }
382 } 380 }
@@ -384,6 +382,22 @@ int bus_add_device(struct device * dev)
384} 382}
385 383
386/** 384/**
385 * bus_attach_device - add device to bus
386 * @dev: device tried to attach to a driver
387 *
388 * - Try to attach to driver.
389 */
390void bus_attach_device(struct device * dev)
391{
392 struct bus_type * bus = dev->bus;
393
394 if (bus) {
395 device_attach(dev);
396 klist_add_tail(&dev->knode_bus, &bus->klist_devices);
397 }
398}
399
400/**
387 * bus_remove_device - remove device from bus 401 * bus_remove_device - remove device from bus
388 * @dev: device to be removed 402 * @dev: device to be removed
389 * 403 *
@@ -395,6 +409,7 @@ int bus_add_device(struct device * dev)
395void bus_remove_device(struct device * dev) 409void bus_remove_device(struct device * dev)
396{ 410{
397 if (dev->bus) { 411 if (dev->bus) {
412 sysfs_remove_link(&dev->kobj, "subsystem");
398 sysfs_remove_link(&dev->kobj, "bus"); 413 sysfs_remove_link(&dev->kobj, "bus");
399 sysfs_remove_link(&dev->bus->devices.kobj, dev->bus_id); 414 sysfs_remove_link(&dev->bus->devices.kobj, dev->bus_id);
400 device_remove_attrs(dev->bus, dev); 415 device_remove_attrs(dev->bus, dev);
@@ -732,14 +747,9 @@ EXPORT_SYMBOL_GPL(bus_for_each_dev);
732EXPORT_SYMBOL_GPL(bus_find_device); 747EXPORT_SYMBOL_GPL(bus_find_device);
733EXPORT_SYMBOL_GPL(bus_for_each_drv); 748EXPORT_SYMBOL_GPL(bus_for_each_drv);
734 749
735EXPORT_SYMBOL_GPL(bus_add_device);
736EXPORT_SYMBOL_GPL(bus_remove_device);
737EXPORT_SYMBOL_GPL(bus_register); 750EXPORT_SYMBOL_GPL(bus_register);
738EXPORT_SYMBOL_GPL(bus_unregister); 751EXPORT_SYMBOL_GPL(bus_unregister);
739EXPORT_SYMBOL_GPL(bus_rescan_devices); 752EXPORT_SYMBOL_GPL(bus_rescan_devices);
740EXPORT_SYMBOL_GPL(get_bus);
741EXPORT_SYMBOL_GPL(put_bus);
742EXPORT_SYMBOL_GPL(find_bus);
743 753
744EXPORT_SYMBOL_GPL(bus_create_file); 754EXPORT_SYMBOL_GPL(bus_create_file);
745EXPORT_SYMBOL_GPL(bus_remove_file); 755EXPORT_SYMBOL_GPL(bus_remove_file);