linux-kernel - [PATCH 4.19 156/170] MIPS: Fix a R10000_LLSC

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Date:   Mon,  7 Jan 2019 13:33:03 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Huacai Chen <chenhc@...ote.com>,
        Paul Burton <paul.burton@...s.com>,
        Joshua Kinard <kumba@...too.org>,
        Ralf Baechle <ralf@...ux-mips.org>,
        "Steven J . Hill" <Steven.Hill@...ium.com>,
        Fuxin Zhang <zhangfx@...ote.com>,
        Zhangjin Wu <wuzhangjin@...il.com>, linux-mips@...ux-mips.org
Subject: [PATCH 4.19 156/170] MIPS: Fix a R10000_LLSC_WAR logic in atomic.h

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Huacai Chen <chenhc@...ote.com>

commit db1ce3f5d01d2d6d5714aefba0159d2cb5167a0b upstream.

Commit 4936084c2ee2 ("MIPS: Cleanup R10000_LLSC_WAR logic in atomic.h")
introduce a mistake in atomic64_fetch_##op##_relaxed(), because it
forget to delete R10000_LLSC_WAR in the if-condition. So fix it.

Fixes: 4936084c2ee2 ("MIPS: Cleanup R10000_LLSC_WAR logic in atomic.h")
Signed-off-by: Huacai Chen <chenhc@...ote.com>
Signed-off-by: Paul Burton <paul.burton@...s.com>
Cc: Joshua Kinard <kumba@...too.org>
Cc: Ralf Baechle <ralf@...ux-mips.org>
Cc: Steven J . Hill <Steven.Hill@...ium.com>
Cc: Fuxin Zhang <zhangfx@...ote.com>
Cc: Zhangjin Wu <wuzhangjin@...il.com>
Cc: linux-mips@...ux-mips.org
Cc: stable@...r.kernel.org # 4.19+
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 arch/mips/include/asm/atomic.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/mips/include/asm/atomic.h
+++ b/arch/mips/include/asm/atomic.h
@@ -306,7 +306,7 @@ static __inline__ long atomic64_fetch_##
 {									      \
 	long result;							      \
 									      \
-	if (kernel_uses_llsc && R10000_LLSC_WAR) {			      \
+	if (kernel_uses_llsc) {						      \
 		long temp;						      \
 									      \
 		__asm__ __volatile__(					      \