[PATCH 4.19 156/170] MIPS: Fix a R10000_LLSC_WAR logic in atomic.h

From: Greg Kroah-Hartman
Date: Mon Jan 07 2019 - 07:58:37 EST


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

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

From: Huacai Chen <chenhc@xxxxxxxxxx>

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@xxxxxxxxxx>
Signed-off-by: Paul Burton <paul.burton@xxxxxxxx>
Cc: Joshua Kinard <kumba@xxxxxxxxxx>
Cc: Ralf Baechle <ralf@xxxxxxxxxxxxxx>
Cc: Steven J . Hill <Steven.Hill@xxxxxxxxxx>
Cc: Fuxin Zhang <zhangfx@xxxxxxxxxx>
Cc: Zhangjin Wu <wuzhangjin@xxxxxxxxx>
Cc: linux-mips@xxxxxxxxxxxxxx
Cc: stable@xxxxxxxxxxxxxxx # 4.19+
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
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__( \