[POWERPC] Fix return value from memcpy

As pointed out by Herbert Xu <herbert@gondor.apana.org.au>, our
memcpy implementation didn't return the destination pointer as its
return value, and there is code in the kernel that expects that.
This fixes it.

Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 7 insertions, 4 deletions

diff --git a/arch/powerpc/lib/memcpy_64.S b/arch/powerpc/lib/memcpy_64.S
index fd66acfd3e3e..7173ba98f427 100644
--- a/arch/powerpc/lib/memcpy_64.S
+++ b/arch/powerpc/lib/memcpy_64.S
@@ -11,6 +11,7 @@
 
         .align  7
 _GLOBAL(memcpy)
+        std     r3,48(r1)       /* save destination pointer for return value */
         mtcrf   0x01,r5
         cmpldi  cr1,r5,16
         neg     r6,r3           # LS 3 bits = # bytes to 8-byte dest bdry
@@ -38,7 +39,7 @@ _GLOBAL(memcpy)
         stdu    r9,16(r3)
         bdnz    1b
 3:      std     r8,8(r3)
-        beqlr
+        beq     3f
         addi    r3,r3,16
         ld      r9,8(r4)
 .Ldo_tail:
@@ -53,7 +54,8 @@ _GLOBAL(memcpy)
 2:      bf      cr7*4+3,3f
         rotldi  r9,r9,8
         stb     r9,0(r3)
-3:      blr
+3:      ld      r3,48(r1)       /* return dest pointer */
+        blr
 
 .Lsrc_unaligned:
         srdi    r6,r5,3
@@ -115,7 +117,7 @@ _GLOBAL(memcpy)
 5:      srd     r12,r9,r11
         or      r12,r8,r12
         std     r12,24(r3)
-        beqlr
+        beq     4f
         cmpwi   cr1,r5,8
         addi    r3,r3,32
         sld     r9,r9,r10
@@ -167,4 +169,5 @@ _GLOBAL(memcpy)
 3:      bf      cr7*4+3,4f
         lbz     r0,0(r4)
         stb     r0,0(r3)
-4:      blr
+4:      ld      r3,48(r1)       /* return dest pointer */
+        blr