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Date:	Fri, 19 Sep 2014 10:36:08 +0200 (CEST)
From:	Christophe Leroy <>
To:	Benjamin Herrenschmidt <>,
	Paul Mackerras <>
	Joakim Tjernlund <>,
Subject: [PATCH v4 08/21] powerpc/8xx: No need to restore registers and save them again.

In DTLBError handler there is not need to restore r10, r11 and cr registers
after fixing DAR as they are saved again to the same place just after.

Signed-off-by: Christophe Leroy <>

Changes in v2:
- None

Changes in v3:
- None

Changes in v4:
- None

 arch/powerpc/kernel/head_8xx.S |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/powerpc/kernel/head_8xx.S b/arch/powerpc/kernel/head_8xx.S
index 5f04d5f..e5a250c 100644
--- a/arch/powerpc/kernel/head_8xx.S
+++ b/arch/powerpc/kernel/head_8xx.S
@@ -478,8 +478,8 @@ DataTLBError:
 	cmpwi	cr0, r11, 0x00f0
 	beq-	FixupDAR	/* must be a buggy dcbX, icbi insn. */
 DARFixed:/* Return from dcbx instruction bug workaround */
 	mfspr	r10,SPRN_DSISR
 	stw	r10,_DSISR(r11)
 	mr	r5,r10

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