sysfs_get_ulong
sysfs_get_ulong(path, "cur_state", &cdi->cur_state);
sysfs_get_ulong(tz_name, d_name, &temp_ulong);
sysfs_get_ulong(tz_name, cdev_trip_name,
sysfs_get_ulong(tz_name, "temp",
sysfs_get_ulong(ctrl_cdev_path, "cur_state", state);
sysfs_get_ulong(path, "max_state", &cdi->max_state);