linux-kernel - [PATCH] ia64/mca: Fix cast from integer to pointer warning

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Date:	Thu, 24 Feb 2011 17:23:09 -0500
From:	Jeff Mahoney <jeffm@...e.com>
To:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Cc:	linux-ia64@...r.kernel.org, Tony Luck <tony.luck@...el.com>
Subject: [PATCH] ia64/mca: Fix cast from integer to pointer warning

 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

 This patch casts the return of __get_free_pages to a void * to avoid
 the warning.

Signed-off-by: Jeff Mahoney <jeffm@...e.com>
---
 arch/ia64/kernel/mca.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/arch/ia64/kernel/mca.c
+++ b/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);
-- 
Jeff Mahoney
SUSE Labs
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