--- zzzz-none-000/linux-3.10.107/lib/raid6/avx2.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/lib/raid6/avx2.c	2021-02-04 17:41:59.000000000 +0000
@@ -89,6 +89,7 @@
 
 const struct raid6_calls raid6_avx2x1 = {
 	raid6_avx21_gen_syndrome,
+	NULL,			/* XOR not yet implemented */
 	raid6_have_avx2,
 	"avx2x1",
 	1			/* Has cache hints */
@@ -150,6 +151,7 @@
 
 const struct raid6_calls raid6_avx2x2 = {
 	raid6_avx22_gen_syndrome,
+	NULL,			/* XOR not yet implemented */
 	raid6_have_avx2,
 	"avx2x2",
 	1			/* Has cache hints */
@@ -242,6 +244,7 @@
 
 const struct raid6_calls raid6_avx2x4 = {
 	raid6_avx24_gen_syndrome,
+	NULL,			/* XOR not yet implemented */
 	raid6_have_avx2,
 	"avx2x4",
 	1			/* Has cache hints */