From: Martin Kepplinger <martink@posteo.de>
Date: Wed, 21 Oct 2015 22:03:51 +0000 (+1100)
Subject: arch/sh/kernel/cpu/sh5/unwind.c: use sign_extend64() for sign extension
X-Git-Tag: KARO-TX6UL-2015-11-03~14^2~53
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=13bad8da90ee2bb2f0e027400505cbe8dabe6226;p=karo-tx-linux.git

arch/sh/kernel/cpu/sh5/unwind.c: use sign_extend64() for sign extension

Signed-off-by: Martin Kepplinger <martin.kepplinger@theobroma-system
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: George Spelvin <linux@horizon.com>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Maxime Coquelin <maxime.coquelin@st.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Yury Norov <yury.norov@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>s.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

diff --git a/arch/sh/kernel/cpu/sh5/unwind.c b/arch/sh/kernel/cpu/sh5/unwind.c
index 10aed41757fc..3a4fed406fc6 100644
--- a/arch/sh/kernel/cpu/sh5/unwind.c
+++ b/arch/sh/kernel/cpu/sh5/unwind.c
@@ -159,7 +159,7 @@ static int lookup_prev_stack_frame(unsigned long fp, unsigned long pc,
 
 			/* Sign extend */
 			regcache[dest] =
-				((((s64)(u64)op >> 10) & 0xffff) << 54) >> 54;
+				sign_extend64((((u64)op >> 10) & 0xffff), 9);
 			break;
 		case (0xd0 >> 2): /* addi */
 		case (0xd4 >> 2): /* addi.l */