--- zzzz-none-000/linux-4.1.38/include/net/checksum.h	2017-01-18 18:48:06.000000000 +0000
+++ bcm63-7582-715/linux-4.1.38/include/net/checksum.h	2020-11-25 10:06:48.000000000 +0000
@@ -94,7 +94,7 @@
 }
 
 static inline __wsum
-csum_block_add_ext(__wsum csum, __wsum csum2, int offset, int len)
+csum_block_add_ext(__wsum csum, __wsum csum2, int offset, int len __maybe_unused)
 {
 	return csum_block_add(csum, csum2, offset);
 }