C++ (Cpp) make_deprecated_bus_links Examples

Example #1

/**
 * bus_add_device - add device to bus
 * @dev: device being added
 *
 * - Add device's bus attributes.
 * - Create links to device's bus.
 * - Add the device to its bus's list of devices.
 */
int bus_add_device(struct device *dev)
{
	struct bus_type *bus = bus_get(dev->bus);
	int error = 0;

	if (bus) {
		pr_debug("bus: '%s': add device %s\n", bus->name, dev_name(dev));
		error = device_add_attrs(bus, dev);
		if (error)
			goto out_put;
		error = sysfs_create_link(&bus->p->devices_kset->kobj,
						&dev->kobj, dev_name(dev));
		if (error)
			goto out_id;
		error = sysfs_create_link(&dev->kobj,
				&dev->bus->p->subsys.kobj, "subsystem");
		if (error)
			goto out_subsys;
		error = make_deprecated_bus_links(dev);
		if (error)
			goto out_deprecated;
		klist_add_tail(&dev->p->knode_bus, &bus->p->klist_devices);
	}
	return 0;

out_deprecated:
	sysfs_remove_link(&dev->kobj, "subsystem");
out_subsys:
	sysfs_remove_link(&bus->p->devices_kset->kobj, dev_name(dev));
out_id:
	device_remove_attrs(bus, dev);
out_put:
	bus_put(dev->bus);
	return error;
}

Example #2

File: bus.c Project: B-Rich/linux_drivers

/**
 *	bus_add_device - add device to bus
 *	@dev:	device being added
 *
 *	- Add the device to its bus's list of devices.
 *	- Create link to device's bus.
 */
int bus_add_device(struct device * dev)
{
	struct bus_type * bus = get_bus(dev->bus);
	int error = 0;

	if (bus) {
		pr_debug("bus %s: add device %s\n", bus->name, dev->bus_id);
		error = device_add_attrs(bus, dev);
		if (error)
			goto out_put;
		error = sysfs_create_link(&bus->devices.kobj,
						&dev->kobj, dev->bus_id);
		if (error)
			goto out_id;
		error = sysfs_create_link(&dev->kobj,
				&dev->bus->subsys.kset.kobj, "subsystem");
		if (error)
			goto out_subsys;
		error = make_deprecated_bus_links(dev);
		if (error)
			goto out_deprecated;
	}
	return 0;

out_deprecated:
	sysfs_remove_link(&dev->kobj, "subsystem");
out_subsys:
	sysfs_remove_link(&bus->devices.kobj, dev->bus_id);
out_id:
	device_remove_attrs(bus, dev);
out_put:
	put_bus(dev->bus);
	return error;
}

Example #3

File: bus.c Project: yl849646685/linux-2.6.32

/**
 * bus_add_device :设备dev和其所在的bus之间创建符号链接
 * @dev:待加入设备 
 */
int bus_add_device(struct device *dev)
{
	struct bus_type *bus = bus_get(dev->bus);
	int error = 0;

	if (bus) {
		pr_debug("bus: '%s': add device %s\n", bus->name, dev_name(dev));
		/*在dev->kobj目录下创建设备的属性文件，属性文件为bus的属性文件*/
		error = device_add_attrs(bus, dev);
		if (error)
			goto out_put;
		/*在dev所属bus的device目录下创建指向dev->kobj目录的符号链接，
		 *名字为dev_name(dev)*/
		error = sysfs_create_link(&bus->p->devices_kset->kobj,
						&dev->kobj, dev_name(dev));
		if (error)
			goto out_id;
		/*在dev->kobj目录下创建指向其所在bus目录的符号链接，
		 * 符号名称为subsystem*/
		error = sysfs_create_link(&dev->kobj,
				&dev->bus->p->subsys.kobj, "subsystem");
		if (error)
			goto out_subsys;
		error = make_deprecated_bus_links(dev);
		if (error)
			goto out_deprecated;
		/*dev链入的bus的设备链表中*/
		klist_add_tail(&dev->p->knode_bus, &bus->p->klist_devices);
	}
	return 0;

out_deprecated:
	sysfs_remove_link(&dev->kobj, "subsystem");
out_subsys:
	sysfs_remove_link(&bus->p->devices_kset->kobj, dev_name(dev));
out_id:
	device_remove_attrs(bus, dev);
out_put:
	bus_put(dev->bus);
	return error;
}