Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753860AbaGNIse (ORCPT ); Mon, 14 Jul 2014 04:48:34 -0400 Received: from smtp-out-079.synserver.de ([212.40.185.79]:1116 "EHLO smtp-out-074.synserver.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753653AbaGNIsP (ORCPT ); Mon, 14 Jul 2014 04:48:15 -0400 X-SynServer-TrustedSrc: 1 X-SynServer-AuthUser: lars@metafoo.de X-SynServer-PPID: 26817 Message-ID: <53C3994C.1010309@metafoo.de> Date: Mon, 14 Jul 2014 10:48:12 +0200 From: Lars-Peter Clausen User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Icedove/24.6.0 MIME-Version: 1.0 To: Richard Weinberger , Greg Kroah-Hartman CC: dmitry.torokhov@gmail.com, linux-iio@vger.kernel.org, Benjamin Herrenschmidt , teg@jklm.no, thierry.reding@gmail.com, Lennox Wu , Chen Gang , 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 Subject: Re: [PATCH] drivers: Let several drivers depends on HAS_IOMEM for 'devm_ioremap_resource' References: <201407130545.23004.marex@denx.de> <53C25551.1050909@nod.at> <53C288F0.3070001@metafoo.de> <53C28C4A.70907@nod.at> <53C29015.5070607@metafoo.de> <53C291C8.6050303@nod.at> <53C296C2.30304@metafoo.de> <20140713192202.GA19090@kroah.com> <53C2DF12.6040507@nod.at> <20140713201753.GA29955@kroah.com> <53C39569.9020802@nod.at> In-Reply-To: <53C39569.9020802@nod.at> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 07/14/2014 10:31 AM, Richard Weinberger wrote: > Am 13.07.2014 22:17, schrieb Greg Kroah-Hartman: >> On Sun, Jul 13, 2014 at 09:33:38PM +0200, Richard Weinberger wrote: >>> Maybe we could add COMPILE_TEST to the version string too? >>> Just to detect such kernels fast in user bug reports... >> >> What kind of bug report are you going to get? > > User manages to enable CONFIG_FOO by selecting COMPILE_TEST and > complains that it does not work. :) These drivers are typically drivers for some SoC peripheral and the device will simply physically not exist on a platform that does not provide HAS_IOMEM. This is not really any different from making the driver selectable via COMPILE_TEST for any other platform. To hit the issue you'd have to instantiate a device driver instance for a device that physically does not exist. This will always result in a failure. - Lars -- 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/