[PATCH] powerpc/40x: Clear MSR_DR in one insn instead of two

[Christophe Leroy]

Signed-off-by: Christophe Leroy <christophe.leroy at c-s.fr>
---
 arch/powerpc/kernel/misc_32.S | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/arch/powerpc/kernel/misc_32.S b/arch/powerpc/kernel/misc_32.S
index d9c912b..e025230 100644
--- a/arch/powerpc/kernel/misc_32.S
+++ b/arch/powerpc/kernel/misc_32.S
@@ -243,8 +243,7 @@ _GLOBAL(_nmask_and_or_msr)
  */
 _GLOBAL(real_readb)
 	mfmsr	r7
-	ori	r0,r7,MSR_DR
-	xori	r0,r0,MSR_DR
+	rlwinm	r0,r7,0,~MSR_DR
 	sync
 	mtmsr	r0
 	sync
@@ -261,8 +260,7 @@ _GLOBAL(real_readb)
  */
 _GLOBAL(real_writeb)
 	mfmsr	r7
-	ori	r0,r7,MSR_DR
-	xori	r0,r0,MSR_DR
+	rlwinm	r0,r7,0,~MSR_DR
 	sync
 	mtmsr	r0
 	sync
-- 
2.1.0