linux-kernel - [PATCH] x86: Fix warning about cast from pointer to integer of different size

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Message-ID: <20121119171043.2965.8482.stgit@ahduyck-cp1.jf.intel.com>
Date:	Mon, 19 Nov 2012 09:10:43 -0800
From:	Alexander Duyck <alexander.h.duyck@...el.com>
To:	tglx@...utronix.de, mingo@...hat.com, andi@...stfloor.org,
	hpa@...or.com
Cc:	x86@...nel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] x86: Fix warning about cast from pointer to integer of
 different size

This patch fixes a warning reported by the kbuild test robot where we were
casting a pointer to a physical address which represents an integer of a
different size.  Per the suggestion of Peter Anvin I am replacing it and one
other spot where I made a similar cast with an unsigned long.

Cc: H. Peter Anvin <hpa@...ux.intel.com>
Signed-off-by: Alexander Duyck <alexander.h.duyck@...el.com>
---
 arch/x86/kernel/head32.c |    2 +-
 arch/x86/kernel/head64.c |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kernel/head32.c b/arch/x86/kernel/head32.c
index f15db0c..e175548 100644
--- a/arch/x86/kernel/head32.c
+++ b/arch/x86/kernel/head32.c
@@ -31,7 +31,7 @@ static void __init i386_default_early_setup(void)
 void __init i386_start_kernel(void)
 {
 	memblock_reserve(__pa_symbol(_text),
-			 (phys_addr_t)__bss_stop - (phys_addr_t)_text);
+			 (unsigned long)__bss_stop - (unsigned long)_text);
 
 #ifdef CONFIG_BLK_DEV_INITRD
 	/* Reserve INITRD */
diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c
index 42f5df1..7b215a5 100644
--- a/arch/x86/kernel/head64.c
+++ b/arch/x86/kernel/head64.c
@@ -98,7 +98,7 @@ void __init x86_64_start_reservations(char *real_mode_data)
 	copy_bootdata(__va(real_mode_data));
 
 	memblock_reserve(__pa_symbol(_text),
-			 (phys_addr_t)__bss_stop - (phys_addr_t)_text);
+			 (unsigned long)__bss_stop - (unsigned long)_text);
 
 #ifdef CONFIG_BLK_DEV_INITRD
 	/* Reserve INITRD */

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