struct thermal_zone_device *tz;
        struct thermal_cooling_device *cdev;
 
-       if (!strncmp(dev->bus_id, "thermal_zone", sizeof "thermal_zone" - 1)) {
+       if (!strncmp(dev_name(dev), "thermal_zone", sizeof "thermal_zone" - 1)) {
                tz = to_thermal_zone(dev);
                kfree(tz);
        } else {
        cdev->ops = ops;
        cdev->device.class = &thermal_class;
        cdev->devdata = devdata;
-       sprintf(cdev->device.bus_id, "cooling_device%d", cdev->id);
+       dev_set_name(&cdev->device, "cooling_device%d", cdev->id);
        result = device_register(&cdev->device);
        if (result) {
                release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id);
        tz->device.class = &thermal_class;
        tz->devdata = devdata;
        tz->trips = trips;
-       sprintf(tz->device.bus_id, "thermal_zone%d", tz->id);
+       dev_set_name(&tz->device, "thermal_zone%d", tz->id);
        result = device_register(&tz->device);
        if (result) {
                release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);