[075/151] powerpc: Fix usage of 64-bit instruction in 32-bit altivec code

Greg KH
2009-12-17T04:32:14Z

From: Benjamin Herrenschmidt <benh@kernel.crashing.org>

commit e090aa80321b64c3b793f3b047e31ecf1af9538d upstream.

e821ea70f3b4873b50056a1e0f74befed1014c09 introduced a bug by copying
some 64-bit originated code as-is to be used by both 32 and 64-bit
but this code contains a 64-bit ony "cmpdi" instruction.

This changes it to cmpwi, which is fine since VRSAVE can only contains
a 32-bit value anyway.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
arch/powerpc/kernel/vector.S | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/powerpc/kernel/vector.S
+++ b/arch/powerpc/kernel/vector.S
@@ -58,7 +58,7 @@ _GLOBAL(load_up_altivec)
* all 1's
*/
mfspr r4,SPRN_VRSAVE
- cmpdi 0,r4,0
+ cmpwi 0,r4,0
bne+ 1f
li r4,-1
mtspr SPRN_VRSAVE,r4