From patchwork Thu Jun 8 14:13:17 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lorenzo Pieralisi X-Patchwork-Id: 9775515 X-Patchwork-Delegate: bhelgaas@google.com Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 3489E60350 for ; Thu, 8 Jun 2017 14:13:57 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 25A2A20855 for ; Thu, 8 Jun 2017 14:13:57 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 19BC42855A; Thu, 8 Jun 2017 14:13:57 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7E1AF20855 for ; Thu, 8 Jun 2017 14:13:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751567AbdFHONz (ORCPT ); Thu, 8 Jun 2017 10:13:55 -0400 Received: from foss.arm.com ([217.140.101.70]:50566 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751541AbdFHONz (ORCPT ); Thu, 8 Jun 2017 10:13:55 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id C484E169E; Thu, 8 Jun 2017 07:13:54 -0700 (PDT) Received: from red-moon.cambridge.arm.com (red-moon.cambridge.arm.com [10.1.206.55]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 4A18A3F3E1; Thu, 8 Jun 2017 07:13:50 -0700 (PDT) From: Lorenzo Pieralisi To: linux-pci@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org, Lorenzo Pieralisi , Bjorn Helgaas , Ley Foon Tan , Arnd Bergmann , Will Deacon , Russell King , Pratyush Anand , Jingoo Han , Rob Herring , Simon Horman , Mingkai Hu , Tanmay Inamdar , Murali Karicheri , Bharat Kumar Gogada , Wenrui Li , Shawn Lin , Minghuan Lian , Gabriele Paoloni , Thomas Petazzoni , Joao Pinto , Thierry Reding , Michal Simek , Stanimir Varbanov , Zhou Wang , Roy Zang , Matthew Minter , Linus Walleij Subject: [RFT PATCH v2 17/42] PCI: altera: Convert PCI scan API to pci_scan_root_bus_bridge() Date: Thu, 8 Jun 2017 15:13:17 +0100 Message-Id: <20170608141342.2018-18-lorenzo.pieralisi@arm.com> X-Mailer: git-send-email 2.10.0 In-Reply-To: <20170608141342.2018-1-lorenzo.pieralisi@arm.com> References: <20170608141342.2018-1-lorenzo.pieralisi@arm.com> Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The introduction of pci_scan_root_bus_bridge() provides a PCI core API to scan a PCI root bus backed by an already initialized struct pci_host_bridge object, which simplifies the bus scan interface and makes the PCI scan root bus interface easier to generalize as members are added to the struct pci_host_bridge. Convert PCI altera host code to pci_scan_root_bus_bridge() to improve the PCI root bus scanning interface. Signed-off-by: Lorenzo Pieralisi Cc: Bjorn Helgaas Cc: Ley Foon Tan --- drivers/pci/host/pcie-altera.c | 22 ++++++++++++++++------ 1 file changed, 16 insertions(+), 6 deletions(-) diff --git a/drivers/pci/host/pcie-altera.c b/drivers/pci/host/pcie-altera.c index 75ec5ce..7f023b2 100644 --- a/drivers/pci/host/pcie-altera.c +++ b/drivers/pci/host/pcie-altera.c @@ -579,12 +579,14 @@ static int altera_pcie_probe(struct platform_device *pdev) struct altera_pcie *pcie; struct pci_bus *bus; struct pci_bus *child; + struct pci_host_bridge *bridge; int ret; - pcie = devm_kzalloc(dev, sizeof(*pcie), GFP_KERNEL); - if (!pcie) + bridge = devm_pci_alloc_host_bridge(dev, sizeof(*pcie)); + if (!bridge) return -ENOMEM; + pcie = pci_host_bridge_priv(bridge); pcie->pdev = pdev; ret = altera_pcie_parse_dt(pcie); @@ -613,12 +615,20 @@ static int altera_pcie_probe(struct platform_device *pdev) cra_writel(pcie, P2A_INT_ENA_ALL, P2A_INT_ENABLE); altera_pcie_host_init(pcie); - bus = pci_scan_root_bus(dev, pcie->root_bus_nr, &altera_pcie_ops, - pcie, &pcie->resources); - if (!bus) - return -ENOMEM; + list_splice_init(&pcie->resources, &bridge->windows); + bridge->dev.parent = dev; + bridge->sysdata = pcie; + bridge->busnr = pcie->root_bus_nr; + bridge->ops = &altera_pcie_ops; + + ret = pci_scan_root_bus_bridge(bridge); + if (ret < 0) + return ret; + + bus = bridge->bus; pci_fixup_irqs(pci_common_swizzle, of_irq_parse_and_map_pci); + pci_assign_unassigned_bus_resources(bus); /* Configure PCI Express setting. */