--- /home/alphaone/sysmocom/scm/backports-3.17.1-1/compat/crypto-ccm.c	2014-10-25 15:39:13.000000000 +0200
+++ ./compat/crypto-ccm.c	2015-01-29 00:34:06.584003696 +0100
@@ -247,12 +247,12 @@
 			scatterwalk_start(&walk, sg_next(walk.sg));
 			n = scatterwalk_clamp(&walk, len);
 		}
-		data_src = scatterwalk_map(&walk);
+		data_src = scatterwalk_map(&walk, 0);
 
 		compute_mac(tfm, data_src, n, pctx);
 		len -= n;
 
-		scatterwalk_unmap(data_src);
+		scatterwalk_unmap(data_src, 0);
 		scatterwalk_advance(&walk, n);
 		scatterwalk_done(&walk, 0, len);
 		if (len)