From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 79118C43382 for ; Thu, 27 Sep 2018 09:24:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 39D9C2156B for ; Thu, 27 Sep 2018 09:24:46 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 39D9C2156B Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linuxfoundation.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728906AbeI0PmD (ORCPT ); Thu, 27 Sep 2018 11:42:03 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:56708 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727380AbeI0PmC (ORCPT ); Thu, 27 Sep 2018 11:42:02 -0400 Received: from localhost (ip-213-127-77-73.ip.prioritytelecom.net [213.127.77.73]) by mail.linuxfoundation.org (Postfix) with ESMTPSA id 4ECB6111C; Thu, 27 Sep 2018 09:24:42 +0000 (UTC) From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Zachary Zhang , Thomas Petazzoni , Lorenzo Pieralisi Subject: [PATCH 4.14 60/64] PCI: aardvark: Size bridges before resources allocation Date: Thu, 27 Sep 2018 11:04:17 +0200 Message-Id: <20180927090258.134872556@linuxfoundation.org> X-Mailer: git-send-email 2.19.0 In-Reply-To: <20180927090249.801943776@linuxfoundation.org> References: <20180927090249.801943776@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 4.14-stable review patch. If anyone has any objections, please let me know. ------------------ From: Zachary Zhang commit 91a2968e245d6ba616db37001fa1a043078b1a65 upstream. The PCIE I/O and MEM resource allocation mechanism is that root bus goes through the following steps: 1. Check PCI bridges' range and computes I/O and Mem base/limits. 2. Sort all subordinate devices I/O and MEM resource requirements and allocate the resources and writes/updates subordinate devices' requirements to PCI bridges I/O and Mem MEM/limits registers. Currently, PCI Aardvark driver only handles the second step and lacks the first step, so there is an I/O and MEM resource allocation failure when using a PCI switch. This commit fixes that by sizing bridges before doing the resource allocation. Fixes: 8c39d710363c1 ("PCI: aardvark: Add Aardvark PCI host controller driver") Signed-off-by: Zachary Zhang [Thomas: edit commit log.] Signed-off-by: Thomas Petazzoni Signed-off-by: Lorenzo Pieralisi Cc: Signed-off-by: Greg Kroah-Hartman --- drivers/pci/host/pci-aardvark.c | 1 + 1 file changed, 1 insertion(+) --- a/drivers/pci/host/pci-aardvark.c +++ b/drivers/pci/host/pci-aardvark.c @@ -954,6 +954,7 @@ static int advk_pcie_probe(struct platfo bus = bridge->bus; + pci_bus_size_bridges(bus); pci_bus_assign_resources(bus); list_for_each_entry(child, &bus->children, node)