linux-kernel - [ 19/85] alpha: fix fpu.h usage in userspace

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Message-Id: <20120912233543.748601289@linuxfoundation.org>
Date:	Wed, 12 Sep 2012 16:36:02 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	Greg KH <gregkh@...uxfoundation.org>,
	Matt Turner <mattst88@...too.org>,
	Mike Frysinger <vapier@...too.org>,
	Michael Cree <mcree@...on.net.nz>,
	Matt Turner <mattst88@...il.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: [ 19/85] alpha: fix fpu.h usage in userspace

From: Greg KH <gregkh@...uxfoundation.org>

3.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Mike Frysinger <vapier@...too.org>

commit 0be421862b857e61964435ffcaa7499cf77a5e5a upstream.

After commit ec2212088c42 ("Disintegrate asm/system.h for Alpha"), the
fpu.h header which we install for userland started depending on
special_insns.h which is not installed.

However, fpu.h only uses that for __KERNEL__ code, so protect the
inclusion the same way to avoid build breakage in glibc:

  /usr/include/asm/fpu.h:4:31: fatal error: asm/special_insns.h: No such file or directory

Reported-by: Matt Turner <mattst88@...too.org>
Signed-off-by: Mike Frysinger <vapier@...too.org>
Signed-off-by: Michael Cree <mcree@...on.net.nz>
Acked-by: Matt Turner <mattst88@...il.com>
Signed-off-by: Linus Torvalds <torvalds@...ux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 arch/alpha/include/asm/fpu.h |    2 ++
 1 file changed, 2 insertions(+)

--- a/arch/alpha/include/asm/fpu.h
+++ b/arch/alpha/include/asm/fpu.h
@@ -1,7 +1,9 @@
 #ifndef __ASM_ALPHA_FPU_H
 #define __ASM_ALPHA_FPU_H
 
+#ifdef __KERNEL__
 #include <asm/special_insns.h>
+#endif
 
 /*
  * Alpha floating-point control register defines:


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