CLASS_ATTR       2443 net/bluetooth/l2cap.c static CLASS_ATTR(l2cap, S_IRUGO, l2cap_sysfs_show, NULL);
CLASS_ATTR       2062 net/bluetooth/rfcomm/core.c static CLASS_ATTR(rfcomm_dlc, S_IRUGO, rfcomm_dlc_sysfs_show, NULL);
CLASS_ATTR        918 net/bluetooth/rfcomm/sock.c static CLASS_ATTR(rfcomm, S_IRUGO, rfcomm_sock_sysfs_show, NULL);
CLASS_ATTR        915 net/bluetooth/sco.c static CLASS_ATTR(sco, S_IRUGO, sco_sysfs_show, NULL);