From 1b72691ce35812ff865d778f303779e774d2b098 Mon Sep 17 00:00:00 2001
From: Andi Kleen <ak@linux.intel.com>
Date: Mon, 18 Aug 2008 09:06:01 +0200
Subject: [PATCH] x86: fix build warnings in real mode code
This recent patch
commit c3965bd15118742d72b4bc1a290d37b3f081eb98
Author: Paul Jackson <pj@sgi.com>
Date: Wed May 14 08:15:34 2008 -0700
x86 boot: proper use of ARRAY_SIZE instead of repeated E820MAX constant
caused these new warnings during a normal build:
In file included from linux-2.6/arch/x86/boot/memory.c:17:
linux-2.6/include/linux/log2.h: In function '__ilog2_u32':
linux-2.6/include/linux/log2.h:34: warning: implicit declaration of function 'fls'
linux-2.6/include/linux/log2.h: In function '__ilog2_u64':
linux-2.6/include/linux/log2.h:42: warning: implicit declaration of function 'fls64'
linux-2.6/include/linux/log2.h: In function '__roundup_pow_of_two ':
linux-2.6/include/linux/log2.h:63: warning: implicit declaration of function 'fls_long'
I tried to fix them in log2.h, but it's difficult because the real mode
environment is completely different from a normal kernel environment. Instead
define an own ARRAY_SIZE macro in boot.h, similar to the other private
macros there.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
arch/x86/boot/boot.h | 2 ++
arch/x86/boot/memory.c | 1 -
2 files changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/x86/boot/boot.h b/arch/x86/boot/boot.h
index 616b804a22952..cc0ef13fba7a6 100644
--- a/arch/x86/boot/boot.h
+++ b/arch/x86/boot/boot.h
@@ -30,6 +30,8 @@
/* Useful macros */
#define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)]))
+#define ARRAY_SIZE(x) (sizeof(x) / sizeof(*(x)))
+
extern struct setup_header hdr;
extern struct boot_params boot_params;
diff --git a/arch/x86/boot/memory.c b/arch/x86/boot/memory.c
index 53165c97336b2..8c3c25f35578a 100644
--- a/arch/x86/boot/memory.c
+++ b/arch/x86/boot/memory.c
@@ -13,7 +13,6 @@
*/
#include "boot.h"
-#include <linux/kernel.h>
#define SMAP 0x534d4150 /* ASCII "SMAP" */
--
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