Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761484AbaGRKoZ (ORCPT ); Fri, 18 Jul 2014 06:44:25 -0400 Received: from mail-pa0-f42.google.com ([209.85.220.42]:62228 "EHLO mail-pa0-f42.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1761271AbaGRKoW (ORCPT ); Fri, 18 Jul 2014 06:44:22 -0400 Message-ID: <53C8FA78.1020501@gmail.com> Date: Fri, 18 Jul 2014 18:44:08 +0800 From: Chen Gang User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: Richard Weinberger , Arnd Bergmann , Lars-Peter Clausen CC: Guenter Roeck , Greg Kroah-Hartman , dmitry.torokhov@gmail.com, linux-iio@vger.kernel.org, Benjamin Herrenschmidt , teg@jklm.no, Thierry Reding , Lennox Wu , Marek Vasut , Liqin Chen , msalter@redhat.com, linux-pwm@vger.kernel.org, devel@driverdev.osuosl.org, linux-watchdog@vger.kernel.org, linux-input@vger.kernel.org, "linux-kernel@vger.kernel.org" , knaack.h@gmx.de, Martin Schwidefsky , Mischa.Jonker@synopsys.com, jic23@kernel.org, Geert Uytterhoeven Subject: Re: [PATCH] drivers: Let several drivers depends on HAS_IOMEM for 'devm_ioremap_resource' References: <201407130545.23004.marex@denx.de> <6823014.2plXDE9VA9@wuerfel> <53C7A819.40403@metafoo.de> <6485666.LVFO2YCEQx@wuerfel> <53C8114D.30601@nod.at> <53C86C10.2000608@gmail.com> <53C8CE59.3060103@nod.at> In-Reply-To: <53C8CE59.3060103@nod.at> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 07/18/2014 03:35 PM, Richard Weinberger wrote: > 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? > COMPILE_TEST is none-architecture specific, but UML is. So in generic include folder, if we're focusing on choosing whether COMPILE_TEST or UML, for me, I will choose COMPILE_TEST. If we're not only focusing on COMPILE_TEST, for me, if something only depend on one architecture, I'd like to put them under "arch/*/" folder. Especially, after that, we can remove all HAS_IOMEM and NO_IOMEM, nobody has to think of them again. :-) Thanks. -- Chen Gang Open, share, and attitude like air, water, and life which God blessed -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/