From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Mon, 28 Oct 2013 12:19:57 +0100
Subject: wait.h: include atomic.h
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Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git
Git-commit: 52ac3e4dba3a8cedeaea9f0815693d6a1277f3bf
Patch-mainline: Queued in subsystem maintainer repository
References: SLE Realtime Extension

|  CC      init/main.o
|In file included from include/linux/mmzone.h:9:0,
|                 from include/linux/gfp.h:4,
|                 from include/linux/kmod.h:22,
|                 from include/linux/module.h:13,
|                 from init/main.c:15:
|include/linux/wait.h: In function ‘wait_on_atomic_t’:
|include/linux/wait.h:982:2: error: implicit declaration of function ‘atomic_read’ [-Werror=implicit-function-declaration]
|  if (atomic_read(val) == 0)
|  ^

This pops up on ARM. Non-RT gets its atomic.h include from spinlock.h

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Mike Galbraith <mgalbraith@suse.de>
---
 include/linux/wait.h |    1 +
 1 file changed, 1 insertion(+)

--- a/include/linux/wait.h
+++ b/include/linux/wait.h
@@ -6,6 +6,7 @@
 #include <linux/list.h>
 #include <linux/stddef.h>
 #include <linux/spinlock.h>
+#include <linux/atomic.h>
 
 #include <asm/current.h>
 #include <uapi/linux/wait.h>