Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759322Ab2ERSHI (ORCPT ); Fri, 18 May 2012 14:07:08 -0400 Received: from mail-lpp01m010-f46.google.com ([209.85.215.46]:58762 "EHLO mail-lpp01m010-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759246Ab2ERSHE convert rfc822-to-8bit (ORCPT ); Fri, 18 May 2012 14:07:04 -0400 MIME-Version: 1.0 In-Reply-To: References: <1336422606-4244-1-git-send-email-yinghai@kernel.org> <1336422606-4244-6-git-send-email-yinghai@kernel.org> From: Bjorn Helgaas Date: Fri, 18 May 2012 12:06:42 -0600 Message-ID: Subject: Re: [PATCH 05/21] resource: adjust_resource handle resource without parent To: Yinghai Lu Cc: Benjamin Herrenschmidt , Tony Luck , David Miller , x86 , Dominik Brodowski , Andrew Morton , Linus Torvalds , Greg Kroah-Hartman , linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8BIT X-System-Of-Record: true Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1004 Lines: 20 On Fri, May 18, 2012 at 11:54 AM, Yinghai Lu wrote: > On Fri, May 18, 2012 at 10:12 AM, Bjorn Helgaas wrote: >> On Mon, May 7, 2012 at 2:29 PM, Yinghai Lu wrote: > >> Where does this case occur? ?When do you need to adjust a resource >> that has no parent? > > for unassigned pci bridge from BIOS, before scan busn_res.end is 0xff, > so you can not insert them, because the bridge could in the middle. > Have to update the busn_res.end and insert after the bridge is scanned Does the resource have children in this case? If it has no parent, it's not in the resource tree at all, is it? Is there any reason to use adjust_resource() rather than just updating res->start and res->end directly? -- 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/