linux-kernel - [PATCH] [59/106] mca.c: Fix cast from integer to pointer warning

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Date:	Tue, 26 Apr 2011 14:13:39 -0700 (PDT)
From:	Andi Kleen <andi@...stfloor.org>
To:	jeffm@...e.com, tony.luck@...el.com, gregkh@...e.de,
	ak@...ux.intel.com, linux-kernel@...r.kernel.org,
	stable@...nel.org, tim.bird@...sony.com
Subject: [PATCH] [59/106] mca.c: Fix cast from integer to pointer warning

2.6.35-longterm review patch.  If anyone has any objections, please let me know.

------------------
From: Jeff Mahoney <jeffm@...e.com>

commit c1d036c4d1cb00b7e8473a2ad0a78f13e13a8183 upstream.

ia64_mca_cpu_init has a void *data local variable that is assigned
the value from either __get_free_pages() or mca_bootmem(). The problem
is that __get_free_pages returns an unsigned long and mca_bootmem, via
alloc_bootmem(), returns a void *. format_mca_init_stack takes the void *,
and it's also used with __pa(), but that casts it to long anyway.

This results in the following build warning:

arch/ia64/kernel/mca.c:1898: warning: assignment makes pointer from
integer without a cast

Cast the return of __get_free_pages to a void * to avoid
the warning.

Signed-off-by: Jeff Mahoney <jeffm@...e.com>
Signed-off-by: Tony Luck <tony.luck@...el.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>
Signed-off-by: Andi Kleen <ak@...ux.intel.com>

---
 arch/ia64/kernel/mca.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

Index: linux-2.6.35.y/arch/ia64/kernel/mca.c
===================================================================
--- linux-2.6.35.y.orig/arch/ia64/kernel/mca.c
+++ linux-2.6.35.y/arch/ia64/kernel/mca.c
@@ -1859,7 +1859,8 @@ ia64_mca_cpu_init(void *cpu_data)
 			data = mca_bootmem();
 			first_time = 0;
 		} else
-			data = __get_free_pages(GFP_KERNEL, get_order(sz));
+			data = (void *)__get_free_pages(GFP_KERNEL,
+							get_order(sz));
 		if (!data)
 			panic("Could not allocate MCA memory for cpu %d\n",
 					cpu);
--
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