linux-kernel - Re: [PATCH] drivers: Let several drivers depends on HAS_IOMEM for 'devm_ioremap

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Date:	Fri, 18 Jul 2014 09:35:53 +0200
From:	Richard Weinberger <richard@....at>
To:	Chen Gang <gang.chen.5i5j@...il.com>,
	Arnd Bergmann <arnd@...db.de>,
	Lars-Peter Clausen <lars@...afoo.de>
CC:	Guenter Roeck <linux@...ck-us.net>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	dmitry.torokhov@...il.com, linux-iio@...r.kernel.org,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>, teg@...m.no,
	Thierry Reding <thierry.reding@...il.com>,
	Lennox Wu <lennox.wu@...il.com>, Marek Vasut <marex@...x.de>,
	Liqin Chen <liqin.linux@...il.com>, msalter@...hat.com,
	linux-pwm@...r.kernel.org, devel@...verdev.osuosl.org,
	linux-watchdog@...r.kernel.org, linux-input@...r.kernel.org,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	knaack.h@....de, Martin Schwidefsky <schwidefsky@...ibm.com>,
	Mischa.Jonker@...opsys.com, jic23@...nel.org,
	Geert Uytterhoeven <geert@...ux-m68k.org>
Subject: Re: [PATCH] drivers: Let several drivers depends on HAS_IOMEM for
 'devm_ioremap_resource'

Am 18.07.2014 02:36, schrieb Chen Gang:
> 
> On 07/18/2014 02:09 AM, Richard Weinberger wrote:
>> Am 17.07.2014 12:48, schrieb Arnd Bergmann:
>>> AFAICT, NO_IOMEM only has a real purpose on UML these days. Could we take
>>> a shortcut here and make COMPILE_TEST depend on !UML? Getting random stuff
>>> to build on UML seems pointless to me and we special-case it in a number of
>>> places already.
>>
>> If UML is the only arch without io memory the dependency on !UML seems
>> reasonable to me. :-)
>>
> 
> For me, if only uml left, I suggest to implement dummy functions within
> uml instead of let CONFIG_UML appear in generic include directory. And
> then remove all HAS_IOMEM and NO_IOMEM from kernel.

Erm, this is something completely different.
I thought we're focusing on COMPILE_TEST?

Thanks,
//richard
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