linux-kernel - Re: [PATCH] arch: m68k: include: asm: the 3rd parameter of 'insl' and 'outsl' need '<< 2'

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Date:	Mon, 03 Jun 2013 17:40:02 +0800
From:	Chen Gang <gang.chen@...anux.com>
To:	schmitz <schmitz@...phys.uni-duesseldorf.de>
CC:	Geert Uytterhoeven <geert@...ux-m68k.org>,
	Greg Ungerer <gerg@...inux.org>, schmitz@...ian.org,
	Sam Ravnborg <sam@...nborg.org>,
	Greg KH <gregkh@...uxfoundation.org>,
	linux-m68k <linux-m68k@...ts.linux-m68k.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Linux-Arch <linux-arch@...r.kernel.org>
Subject: Re: [PATCH] arch: m68k: include: asm: the 3rd parameter of 'insl'
 and 'outsl' need '<< 2'

On 06/01/2013 08:38 AM, schmitz wrote:
> All,
>> Geert ,
>>>>
>>>> The related git number:
>>>>   for parport.h: "4914802 m68k,m68knommu: merge header files" in 2009
>>>>   for io_mm.h: "84b16b7 m68k/atari: ROM port ISA adapter support" in
>>>> Apr 6 2013
>>>>
>>>> The related warning (make EXTRA_CFLAG=-W ARCH=m68k allmodconfig):
>>>>   arch/m68k/include/asm/parport.h:14:0: warning: "insl" redefined
>>>> [enabled by default]
>>>>   arch/m68k/include/asm/io_mm.h:403:0: note: this is the location of
>>>> the previous definition
>>>>   arch/m68k/include/asm/parport.h:15:0: warning: "outsl" redefined
>>>> [enabled by default]
>>>>   arch/m68k/include/asm/io_mm.h:406:0: note: this is the location of
>>>> the previous definition
>>>>     
>> Is that the same problem Thorsten reported recently? parport.h should
>> either use what the arch io.h include defined, or (in the case of Q40
>> on m68k) undef and redefine as needed.
> It appears this is the same issue, see message ID
> loom.20130511T171757-995@...t.gmane.org to linux-m68k (May 12th, by
> Thorsten Glaser).
> 
> This _only_ applies to use of insl/outsl macros in parport_pc.h, which
> is only used by Q40 on m68k. I see no reason to change anything in io.h
> to cope with this warning.

It sounds reasonable.

And excuse me, could you provide the related link directly ?  I don't
know how to see the detail of 'loom.20130511T171757-995@...t.gmane.org'.


Thanks.
-- 
Chen Gang

Asianux Corporation
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