--- zzzz-none-000/linux-3.10.107/drivers/isdn/hisax/isdnl1.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/isdn/hisax/isdnl1.c	2021-02-04 17:41:59.000000000 +0000
@@ -867,7 +867,7 @@
 			break;
 		default:
 			if (cs->debug)
-				debugl1(cs, "l1msg %04X unhandled", pr);
+				debugl1(cs, "%s %04X unhandled", __func__, pr);
 			break;
 		}
 		st = st->next;