linux-kernel - Re: [PATCH] include/asm-generic/io.h: add dummy fuctions to support 'COMPILE

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Date:	Wed, 3 Jul 2013 23:12:04 -0700
From:	Greg KH <gregkh@...uxfoundation.org>
To:	Chen Gang <gang.chen@...anux.com>
Cc:	Chen Gang F T <chen.gang.flying.transformer@...il.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Arnd Bergmann <arnd@...db.de>,
	Geert Uytterhoeven <geert@...ux-m68k.org>,
	Richard Weinberger <richard@....at>,
	Jeff Dike <jdike@...toit.com>,
	David Sharp <dhsharp@...gle.com>,
	"sfr@...b.auug.org.au" <sfr@...b.auug.org.au>,
	Ingo Molnar <mingo@...nel.org>,
	uml-devel <user-mode-linux-devel@...ts.sourceforge.net>,
	uml-user <user-mode-linux-user@...ts.sourceforge.net>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Linux-Arch <linux-arch@...r.kernel.org>,
	Mark Brown <broonie@...nel.org>,
	David Miller <davem@...emloft.net>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jiri Kosina <trivial@...nel.org>, Jiri Slaby <jslaby@...e.cz>
Subject: Re: [PATCH] include/asm-generic/io.h: add dummy fuctions to support
 'COMPILE_TEST' in 'asm-generic'.

On Thu, Jul 04, 2013 at 12:50:31PM +0800, Chen Gang wrote:
> On 07/04/2013 12:08 PM, Greg KH wrote:
> >> > config COMPILE_TEST
> >> >        bool "Compile also drivers which will not load"
> >> >        default n
> > This has _nothing_ to do with asm-generic, sorry.  Please don't confuse
> > the issue.
> 
> But when I choose allmodconfig, then "COMPILE_TEST=y". this may allow a
> module to compile under the architectures which no related HW support.
> 
> When cause compiling issue (HW not support), it is not module's issue,
> we can not 'fix' module by force, and it is not architecture's issue,
> either.
> 
> So we have to look for who has duty for this issue. At least now, it
> seems only 'asm-generic' can be qualified to play this unlucky role.

You seem to not understand what asm-generic is, or does, or I still do
not understand what you are proposing.

Please send a patch showing what you are trying to do here, so that we
can properly understand.

greg k-h
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