linux-kernel - Re: [PATCH] arch: xtensa: include: asm: compiling issue, need cmpxchg64() defined.

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Date:	Tue, 28 May 2013 12:57:15 +0800
From:	Chen Gang <gang.chen@...anux.com>
To:	Max Filippov <jcmvbkbc@...il.com>
CC:	chris@...kel.net, linux-xtensa@...ux-xtensa.org,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Linux-Arch <linux-arch@...r.kernel.org>
Subject: Re: [PATCH] arch: xtensa: include: asm: compiling issue, need cmpxchg64()
 defined.

On 05/28/2013 12:19 AM, Max Filippov wrote:
> On Mon, May 27, 2013 at 3:57 PM, Chen Gang <gang.chen@...anux.com> wrote:
>>
>> When compiling with 'allmodconfig', some of drivers need cmpxchg64(),
>> xtensa does not supply 64-bit implementation for 'xchg', so use the
>> 'generic' implementation.
>>
>> e.g. (for next-20130527 tree):
>>   drivers/block/blockconsole.c:164:2: error: implicit declaration of function ‘cmpxchg64’ [-Werror=implicit-function-declaration]
>>
>> Signed-off-by: Chen Gang <gang.chen@...anux.com>
>> ---
>>  arch/xtensa/include/asm/cmpxchg.h |    1 +
>>  1 files changed, 1 insertions(+), 0 deletions(-)
> 
> Taken to the xtensa-fixes tree. Thanks.
> 

Thank you too.

-- 
Chen Gang

Asianux Corporation
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