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

From: Randy Dunlap <[email-masked]>
Date: Wed, 14 Nov 2012 16:59:10 -0800

From: Randy Dunlap <[email-masked]>

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 <[email-masked]>
Cc: Arnd Bergmann <[email-masked]>
Cc: [email-masked]
Cc: Rafael Aquini <[email-masked]>
Cc: [email-masked]
---
 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