From: Vineet Gupta <vgupta@kernel.org>
Date: Wed, 20 May 2020 07:52:45 +0000 (-0700)
Subject: ARC: entry: EV_MachineCheck dont re-read ECR
X-Git-Tag: v6.6-rc1~56^2~7
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=0e93ecaeebd5d0f189d1fa50a614ac0816a8c703;p=thirdparty%2Fkernel%2Flinux.git

ARC: entry: EV_MachineCheck dont re-read ECR

Signed-off-by: Vineet Gupta <vgupta@kernel.org>
---

diff --git a/arch/arc/kernel/entry.S b/arch/arc/kernel/entry.S
index f291fc8476d7b..46582fbebcf22 100644
--- a/arch/arc/kernel/entry.S
+++ b/arch/arc/kernel/entry.S
@@ -95,16 +95,15 @@ END(instr_service)
 
 ENTRY(EV_MachineCheck)
 
-	EXCEPTION_PROLOGUE
+	EXCEPTION_PROLOGUE	; ECR returned in r10
 
-	lr  r2, [ecr]
 	lr  r0, [efa]
 	mov r1, sp
 
 	; MC excpetions disable MMU
 	ARC_MMU_REENABLE r3
 
-	lsr  	r3, r2, 8
+	lsr  	r3, r10, 8
 	bmsk 	r3, r3, 7
 	brne    r3, ECR_C_MCHK_DUP_TLB, 1f