From 61a179a8fa701a2f5e9cd92b78ccc98f96b9f1d4 Mon Sep 17 00:00:00 2001
From: Jens Axboe <jens.axboe@oracle.com>
Date: Fri, 13 Jun 2008 08:38:20 +0200
Subject: [PATCH] Revert "Remove unused define"

This reverts commit edf2c6cf5adc82ee43c81e033cf2215eb9ffdb16.
---
 arch/arch-alpha.h  | 2 ++
 arch/arch-ia64.h   | 2 ++
 arch/arch-x86.h    | 2 ++
 arch/arch-x86_64.h | 2 ++
 4 files changed, 8 insertions(+)

diff --git a/arch/arch-alpha.h b/arch/arch-alpha.h
index e2043683..a5e3801c 100644
--- a/arch/arch-alpha.h
+++ b/arch/arch-alpha.h
@@ -51,4 +51,6 @@ static inline void spin_unlock(spinlock_t *lock)
 	lock->lock = 0;
 }
 
+#define __SPIN_LOCK_UNLOCKED	{ 0 }
+
 #endif
diff --git a/arch/arch-ia64.h b/arch/arch-ia64.h
index 37284b15..d9afc32e 100644
--- a/arch/arch-ia64.h
+++ b/arch/arch-ia64.h
@@ -67,4 +67,6 @@ static inline void spin_unlock(spinlock_t *lock)
 	__asm__ __volatile__("st4.rel.nta [%0] = r0\n\t" :: "r" (lock));
 }
 
+#define __SPIN_LOCK_UNLOCKED	{ 0 }
+
 #endif
diff --git a/arch/arch-x86.h b/arch/arch-x86.h
index 51d7d967..b9249eae 100644
--- a/arch/arch-x86.h
+++ b/arch/arch-x86.h
@@ -69,4 +69,6 @@ static inline void spin_unlock(spinlock_t *lock)
 			: "memory", "cc");
 }
 
+#define __SPIN_LOCK_UNLOCKED	{ 0 }
+
 #endif
diff --git a/arch/arch-x86_64.h b/arch/arch-x86_64.h
index c8c3d182..71ba2240 100644
--- a/arch/arch-x86_64.h
+++ b/arch/arch-x86_64.h
@@ -69,4 +69,6 @@ static inline void spin_unlock(spinlock_t *lock)
 			: "memory", "cc");
 }
 
+#define __SPIN_LOCK_UNLOCKED	{ 0 }
+
 #endif
-- 
2.25.1