From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from out1-smtp.messagingengine.com ([66.111.4.25]:45237 "EHLO out1-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726382AbeHWKZG (ORCPT ); Thu, 23 Aug 2018 06:25:06 -0400 Subject: FAILED: patch "[PATCH] PCI: aardvark: Size bridges before resources allocation" failed to apply to 4.14-stable tree To: zhangzg@marvell.com, lorenzo.pieralisi@arm.com, stable@vger.kernel.org, thomas.petazzoni@bootlin.com Cc: From: Date: Thu, 23 Aug 2018 08:56:52 +0200 Message-ID: <153500741220135@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: The patch below does not apply to the 4.14-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >>From 91a2968e245d6ba616db37001fa1a043078b1a65 Mon Sep 17 00:00:00 2001 From: Zachary Zhang Date: Fri, 29 Jun 2018 11:16:19 +0200 Subject: [PATCH] PCI: aardvark: Size bridges before resources allocation 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: diff --git a/drivers/pci/controller/pci-aardvark.c b/drivers/pci/controller/pci-aardvark.c index c9c72595bd20..10543ed7b500 100644 --- a/drivers/pci/controller/pci-aardvark.c +++ b/drivers/pci/controller/pci-aardvark.c @@ -906,6 +906,7 @@ static int advk_pcie_probe(struct platform_device *pdev) bus = bridge->bus; + pci_bus_size_bridges(bus); pci_bus_assign_resources(bus); list_for_each_entry(child, &bus->children, node)