--- zzzz-none-000/linux-3.10.107/arch/arm/lib/memcpy.S	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/arch/arm/lib/memcpy.S	2021-02-04 17:41:59.000000000 +0000
@@ -12,6 +12,7 @@
 
 #include <linux/linkage.h>
 #include <asm/assembler.h>
+#include <asm/unwind.h>
 
 #define LDR1W_SHIFT	0
 #define STR1W_SHIFT	0
@@ -48,6 +49,10 @@
 	stmdb sp!, {r0, \reg1, \reg2}
 	.endm
 
+	.macro usave reg1 reg2
+	UNWIND(	.save	{r0, \reg1, \reg2}	)
+	.endm
+
 	.macro exit reg1 reg2
 	ldmfd sp!, {r0, \reg1, \reg2}
 	.endm
@@ -55,9 +60,13 @@
 	.text
 
 /* Prototype: void *memcpy(void *dest, const void *src, size_t n); */
-
+ENTRY(mmiocpy)
+.weak memcpy
+ENTRY(__memcpy)
 ENTRY(memcpy)
 
 #include "copy_template.S"
 
 ENDPROC(memcpy)
+ENDPROC(mmiocpy)
+ENDPROC(__memcpy)