Subject: [PATCH] mm/ARM: fix ARMs __ffs() to conform to avoid warning with NO_BOOTMEM

From: [email-masked] (Santosh Shilimkar)
Date: Fri, 20 Dec 2013 18:05:15 -0500

On Friday 20 December 2013 05:55 PM, Russell King - ARM Linux wrote:
> On Fri, Dec 20, 2013 at 05:39:25PM -0500, Santosh Shilimkar wrote:
>> Russell,
>>
>> On Friday 13 December 2013 07:38 PM, Santosh Shilimkar wrote:
>>> Building ARM with NO_BOOTMEM generates below warning.
>>>
>>> mm/nobootmem.c: In function _____free_pages_memory___:
>>> mm/nobootmem.c:88:11: warning: comparison of distinct pointer types lacks a cast
>>>
>>> 	order = min(MAX_ORDER - 1UL, __ffs(start));
>>>
>>> ARM's __ffs() differs from other architectures in that it ends up being
>>> an int, whereas almost everyone else is unsigned long.
>>>
>>> So fix ARMs __ffs() to conform to other architectures. Suggested by
>>> Russell King <[email-masked]>
>>>
>>> Some more details in below thread -
>>> 	https://lkml.org/lkml/2013/12/9/807
>>>
>>> Cc: Andrew Morton <[email-masked]>
>>> Cc: Russell King <[email-masked]>
>>> Signed-off-by: Santosh Shilimkar <[email-masked]>
>>> ---
>> Is this patch inline with what we discussed off-list ?
> 
> It is.
> 
>> If you ack it, it can go into the Andrews tree to kill that one last
>> warning with the memblock series. Thanks
> 
> Acked-by: Russell King <[email-masked]>
>
Great !!
 
Andrew,
Can you please pick the $subject patch as well in your
mm tree ? Thanks

regards,
Santosh