/** * 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 = device_add_groups(dev, bus->dev_groups); if (error) goto out_id; error = sysfs_create_link(&bus->p->devices_kset->kobj, &dev->kobj, dev_name(dev)); if (error) goto out_groups; error = sysfs_create_link(&dev->kobj, &dev->bus->p->subsys.kobj, "subsystem"); if (error) goto out_subsys; klist_add_tail(&dev->p->knode_bus, &bus->p->klist_devices); } return 0;
out_subsys: sysfs_remove_link(&bus->p->devices_kset->kobj, dev_name(dev)); out_groups: device_remove_groups(dev, bus->dev_groups); out_id: device_remove_attrs(bus, dev); out_put: bus_put(dev->bus); return error; }
