diff --git a/include/net/sctp/sctp.h b/include/net/sctp/sctp.h
index 119f5a1ed499ee5253e0a751033087aa079d0b7c..93eb708609e7ef588c3ee517ba80d106c481c140 100644
--- a/include/net/sctp/sctp.h
+++ b/include/net/sctp/sctp.h
@@ -156,7 +156,6 @@ int sctp_primitive_ASCONF(struct sctp_association *, void *arg);
 __u32 sctp_start_cksum(__u8 *ptr, __u16 count);
 __u32 sctp_update_cksum(__u8 *ptr, __u16 count, __u32 cksum);
 __u32 sctp_end_cksum(__u32 cksum);
-__u32 sctp_update_copy_cksum(__u8 *, __u8 *, __u16 count, __u32 cksum);
 
 /*
  * sctp/input.c
diff --git a/net/sctp/crc32c.c b/net/sctp/crc32c.c
index 59cf7b06d216c7450cbf1bec1f3965812d63fff8..181edabdb8ca20ddde59c43f72d263b296087198 100644
--- a/net/sctp/crc32c.c
+++ b/net/sctp/crc32c.c
@@ -170,6 +170,7 @@ __u32 sctp_update_cksum(__u8 *buffer, __u16 length, __u32 crc32)
 	return crc32;
 }
 
+#if 0
 __u32 sctp_update_copy_cksum(__u8 *to, __u8 *from, __u16 length, __u32 crc32)
 {
 	__u32 i;
@@ -186,6 +187,7 @@ __u32 sctp_update_copy_cksum(__u8 *to, __u8 *from, __u16 length, __u32 crc32)
 
 	return crc32;
 }
+#endif  /*  0  */
 
 __u32 sctp_end_cksum(__u32 crc32)
 {