linux-kernel - [PATCH x86 for review III] [1/29] i386: avoid gcc extension

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Message-Id: <20070212551.664370000@suse.de>
Date:	Mon, 12 Feb 2007 17:51:20 +0100 (CET)
From:	Andi Kleen <ak@...e.de>
To:	Randy Dunlap <randy.dunlap@...cle.com>, Andi Kleen <ak@...e.de>,
	Christoph Hellwig <hch@...radead.org>,
	Segher Boessenkool <segher@...nel.crashing.org>,
	patches@...-64.org, linux-kernel@...r.kernel.org
Subject: [PATCH x86 for review III] [1/29] i386: avoid gcc extension


From: Randy Dunlap <randy.dunlap@...cle.com>

setcc() in math-emu is written as a gcc extension statement expression
macro that returns a value.  However, it's not used that way and it's not
needed like that, so just make it a do-while non-extension macro so that we
don't use an extension when it's not needed.

Signed-off-by: Randy Dunlap <randy.dunlap@...cle.com>
Signed-off-by: Andi Kleen <ak@...e.de>
Cc: Andi Kleen <ak@...e.de>
Cc: Christoph Hellwig <hch@...radead.org>
Cc: Segher Boessenkool <segher@...nel.crashing.org>
Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
---

 arch/i386/math-emu/status_w.h |    8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

Index: linux/arch/i386/math-emu/status_w.h
===================================================================
--- linux.orig/arch/i386/math-emu/status_w.h
+++ linux/arch/i386/math-emu/status_w.h
@@ -48,9 +48,11 @@
 
 #define status_word() \
   ((partial_status & ~SW_Top & 0xffff) | ((top << SW_Top_Shift) & SW_Top))
-#define setcc(cc) ({ \
-  partial_status &= ~(SW_C0|SW_C1|SW_C2|SW_C3); \
-  partial_status |= (cc) & (SW_C0|SW_C1|SW_C2|SW_C3); })
+static inline void setcc(int cc)
+{
+	partial_status &= ~(SW_C0|SW_C1|SW_C2|SW_C3);
+	partial_status |= (cc) & (SW_C0|SW_C1|SW_C2|SW_C3);
+}
 
 #ifdef PECULIAR_486
    /* Default, this conveys no information, but an 80486 does it. */
-
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