From 1b59ddfcf1678de38a1f8ca9fb8ea5eebeff1843 Mon Sep 17 00:00:00 2001
From: John David Anglin <dave.anglin@bell.net>
Date: Mon, 7 Sep 2015 20:13:28 -0400
Subject: [PATCH] parisc: Use double word condition in 64bit CAS operation

The attached change fixes the condition used in the "sub" instruction.
A double word comparison is needed.  This fixes the 64-bit LWS CAS
operation on 64-bit kernels.

I can now enable 64-bit atomic support in GCC.

Cc: <stable@vger.kernel.org>
Signed-off-by: John David Anglin <dave.anglin>
Signed-off-by: Helge Deller <deller@gmx.de>
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