linux-kernel - [PATCH] lib/atomic64_test: do not build on non-atomic64 systems

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Message-Id: <1287250035-30404-1-git-send-email-vapier@gentoo.org>
Date:	Sat, 16 Oct 2010 13:27:15 -0400
From:	Mike Frysinger <vapier@...too.org>
To:	Luca Barbieri <luca@...a-barbieri.com>
Cc:	linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: [PATCH] lib/atomic64_test: do not build on non-atomic64 systems

If the arch doesn't provide atomic64 functionality (there are quite a
few), then don't bother trying to build this test.

Signed-off-by: Mike Frysinger <vapier@...too.org>
---
 lib/atomic64_test.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/lib/atomic64_test.c b/lib/atomic64_test.c
index 250ed11..0ac1a66 100644
--- a/lib/atomic64_test.c
+++ b/lib/atomic64_test.c
@@ -12,6 +12,8 @@
 #include <linux/kernel.h>
 #include <asm/atomic.h>
 
+#ifdef ATOMIC64_INIT
+
 #define INIT(c) do { atomic64_set(&v, c); r = c; } while (0)
 static __init int test_atomic64(void)
 {
@@ -164,3 +166,5 @@ static __init int test_atomic64(void)
 }
 
 core_initcall(test_atomic64);
+
+#endif
-- 
1.7.3.1

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