[PATCH 1/2] asm-generic: add __WARN() to bug.h

[Randy Dunlap]

From: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>

Add __WARN() macro for the case of CONFIG_BUG is not enabled.
This fixes a build error in mm/balloon_compaction.c.

Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Cc: linux-arch@xxxxxxxxxxxxxxx
Cc: Rafael Aquini <aquini@xxxxxxxxxx>
Cc: linux-mm@xxxxxxxxx
---
 include/asm-generic/bug.h |    4 ++++
 1 file changed, 4 insertions(+)

--- linux-next-20121114.orig/include/asm-generic/bug.h
+++ linux-next-20121114/include/asm-generic/bug.h
@@ -129,6 +129,10 @@ extern void warn_slowpath_null(const cha
 })
 #endif
 
+#ifndef __WARN
+#define __WARN()	do {} while (0)
+#endif
+
 #define WARN_TAINT(condition, taint, format...) WARN_ON(condition)
 
 #endif
--
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