linux-kernel - Fix compile breakage with kref.h

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Date:	Tue, 17 Jan 2012 21:14:05 +0000
From:	James Bottomley <jbottomley@...allels.com>
To:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Greg Kroah-Hartman <greg@...ah.com>
CC:	Parisc List <linux-parisc@...r.kernel.org>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Fix compile breakage with kref.h

This set of build failures just started appearing on parisc:

In file included from drivers/input/serio/serio_raw.c:12:
include/linux/kref.h: In function 'kref_get':
include/linux/kref.h:40: error: 'TAINT_WARN' undeclared (first use in this function)
include/linux/kref.h:40: error: (Each undeclared identifier is reported only once
include/linux/kref.h:40: error: for each function it appears in.)
include/linux/kref.h: In function 'kref_sub':
include/linux/kref.h:65: error: 'TAINT_WARN' undeclared (first use in this function)

It happens because TAINT_WARN is defined in kernel.h and this particular
compile doesn't seem to include it (no idea why it's just
manifesting ... probably some #include file untangling exposed it).  Fix
by adding #include <linux/kernel.h> to linux/kref.h

Signed-off-by: James Bottomley <JBottomley@...allels.com>

---

diff --git a/include/linux/kref.h b/include/linux/kref.h
index abc0120..9c07dce 100644
--- a/include/linux/kref.h
+++ b/include/linux/kref.h
@@ -17,6 +17,7 @@
 
 #include <linux/bug.h>
 #include <linux/atomic.h>
+#include <linux/kernel.h>
 
 struct kref {
 	atomic_t refcount;