m68k: apollo core - Kill warn_unused_result warnings

[karo-tx-linux.git] / arch / powerpc / lib / copyuser_64.S

diff --git a/arch/powerpc/lib/copyuser_64.S b/arch/powerpc/lib/copyuser_64.S
index 25ec5378afa454232704d48c604e968efdd33cc0..70693a5c12a113d36d55a0dd1800a255589e73a0 100644 (file)
--- a/arch/powerpc/lib/copyuser_64.S
+++ b/arch/powerpc/lib/copyuser_64.S
@@ -26,11 +26,24 @@ _GLOBAL(__copy_tofrom_user)
        andi.   r6,r6,7
        PPC_MTOCRF      0x01,r5
        blt     cr1,.Lshort_copy
+/* Below we want to nop out the bne if we're on a CPU that has the
+ * CPU_FTR_UNALIGNED_LD_STD bit set and the CPU_FTR_CP_USE_DCBTZ bit
+ * cleared.
+ * At the time of writing the only CPU that has this combination of bits
+ * set is Power6.
+ */
+BEGIN_FTR_SECTION
+       nop
+FTR_SECTION_ELSE
        bne     .Ldst_unaligned
+ALT_FTR_SECTION_END(CPU_FTR_UNALIGNED_LD_STD | CPU_FTR_CP_USE_DCBTZ, \
+                   CPU_FTR_UNALIGNED_LD_STD)
 .Ldst_aligned:
-       andi.   r0,r4,7
        addi    r3,r3,-16
+BEGIN_FTR_SECTION
+       andi.   r0,r4,7
        bne     .Lsrc_unaligned
+END_FTR_SECTION_IFCLR(CPU_FTR_UNALIGNED_LD_STD)
        srdi    r7,r5,4
 20:    ld      r9,0(r4)
        addi    r4,r4,-8
@@ -138,7 +151,7 @@ _GLOBAL(__copy_tofrom_user)
        PPC_MTOCRF      0x01,r6         /* put #bytes to 8B bdry into cr7 */
        subf    r5,r6,r5
        li      r7,0
-       cmpldi  r1,r5,16
+       cmpldi  cr1,r5,16
        bf      cr7*4+3,1f
 35:    lbz     r0,0(r4)
 81:    stb     r0,0(r3)