From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755263AbcBVNuS (ORCPT ); Mon, 22 Feb 2016 08:50:18 -0500 Received: from mga01.intel.com ([192.55.52.88]:9504 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755121AbcBVNuO (ORCPT ); Mon, 22 Feb 2016 08:50:14 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.22,484,1449561600"; d="scan'208";a="750927916" Message-ID: <1456148952.24303.273.camel@linux.intel.com> Subject: Re: [PATCH] kernel/resource.c: fix muxed resource handling in __request_region() From: Alan Cox To: Jesse Barnes , Linus Torvalds Cc: Vincent Pelletier , Simon Guinot , Giel van Schijndel , linux-gpio@vger.kernel.org, Linux Kernel Mailing List , Vincent Donnefort , Yoann Sculo Date: Mon, 22 Feb 2016 13:49:12 +0000 In-Reply-To: <15300c0ce08.2710.f266623ac48c822f02e65082a71b2734@virtuousgeek.org> References: <20150909220140.GD9892@kw.sim.vm.gnt> <1441836918-24159-1-git-send-email-simon.guinot@sequanux.org> <20160219221056.23487da2@x2> <56C7A459.1090801@virtuousgeek.org> <15300c0ce08.2710.f266623ac48c822f02e65082a71b2734@virtuousgeek.org> Organization: Intel Corporation Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.16.5 (3.16.5-3.fc22) Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > we have some good alternatives in the form of bus and platform > drivers that > can manage the appropriate serialization and keep things from > stomping > on one another. It's not used much, especially nowdays. The use case is basically multi I/O chips on the ISA/LPC bus with magic shared config register ports. We have sufficiently few of those we could give muxed the boot and special case them if preferred. Alan