From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932729AbdGKUQ3 (ORCPT ); Tue, 11 Jul 2017 16:16:29 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:58978 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754028AbdGKUQ1 (ORCPT ); Tue, 11 Jul 2017 16:16:27 -0400 DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org E1B6B60723 Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=okaya@codeaurora.org Subject: Re: [PATCH V3 1/2] PCI: Add Extended Tags quirk for Broadcom HT2100 Root Port To: Bjorn Helgaas Cc: linux-pci@vger.kernel.org, timur@codeaurora.org, wim.ten.have@oracle.com, linux-arm-msm@vger.kernel.org, Bjorn Helgaas , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org References: <1499786735-25782-1-git-send-email-okaya@codeaurora.org> <20170711195853.GA14614@bhelgaas-glaptop.roam.corp.google.com> From: Sinan Kaya Message-ID: Date: Tue, 11 Jul 2017 16:16:23 -0400 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.2.1 MIME-Version: 1.0 In-Reply-To: <20170711195853.GA14614@bhelgaas-glaptop.roam.corp.google.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 7/11/2017 3:58 PM, Bjorn Helgaas wrote: > I'm trying to avoid pci_walk_bus() because it's such a minefield as > far as hot-added devices. I don't think we can avoid one in the > quirk, to turn off extended tags for any devices we've already found, > but I think we *can* avoid adding more i Jike Song asked what if you attach a PCIe endpoint that has an extended tags quirk to think about the reverse direction. That's why, I was walking the entire bus. We can maybe hold onto putting such a generic code until such a device with quirk actually shows up. I'll pull your suggestion into a patch, give it a try and then post the next version. -- Sinan Kaya Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm Technologies, Inc. Qualcomm Technologies, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project.