--- zzzz-none-000/linux-3.10.107/arch/powerpc/lib/checksum_64.S	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/arch/powerpc/lib/checksum_64.S	2021-02-04 17:41:59.000000000 +0000
@@ -45,27 +45,6 @@
 	blr
 
 /*
- * Compute checksum of TCP or UDP pseudo-header:
- *   csum_tcpudp_magic(r3=saddr, r4=daddr, r5=len, r6=proto, r7=sum)
- * No real gain trying to do this specially for 64 bit, but
- * the 32 bit addition may spill into the upper bits of
- * the doubleword so we still must fold it down from 64.
- */	
-_GLOBAL(csum_tcpudp_magic)
-	rlwimi	r5,r6,16,0,15	/* put proto in upper half of len */
-	addc	r0,r3,r4	/* add 4 32-bit words together */
-	adde	r0,r0,r5
-	adde	r0,r0,r7
-        rldicl  r4,r0,32,0      /* fold 64 bit value */
-        add     r0,r4,r0
-        srdi    r0,r0,32
-	rlwinm	r3,r0,16,0,31	/* fold two halves together */
-	add	r3,r0,r3
-	not	r3,r3
-	srwi	r3,r3,16
-	blr
-
-/*
  * Computes the checksum of a memory block at buff, length len,
  * and adds in "sum" (32-bit).
  *