From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sinan Kaya Subject: Re: [PATCH V3 1/2] PCI: Add Extended Tags quirk for Broadcom HT2100 Root Port Date: Tue, 11 Jul 2017 16:16:23 -0400 Message-ID: References: <1499786735-25782-1-git-send-email-okaya@codeaurora.org> <20170711195853.GA14614@bhelgaas-glaptop.roam.corp.google.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Return-path: 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 In-Reply-To: <20170711195853.GA14614@bhelgaas-glaptop.roam.corp.google.com> Content-Language: en-US Sender: linux-arm-msm-owner@vger.kernel.org List-Id: linux-arm-msm@vger.kernel.org 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 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.