From patchwork Fri Jan 16 01:44:00 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yijing Wang X-Patchwork-Id: 5644791 X-Patchwork-Delegate: horms@verge.net.au Return-Path: X-Original-To: patchwork-linux-sh@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 8986C9F358 for ; Fri, 16 Jan 2015 03:49:43 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 4F3E32015A for ; Fri, 16 Jan 2015 03:49:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 839C120172 for ; Fri, 16 Jan 2015 03:49:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932635AbbAPDtS (ORCPT ); Thu, 15 Jan 2015 22:49:18 -0500 Received: from szxga03-in.huawei.com ([119.145.14.66]:24266 "EHLO szxga03-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932540AbbAPDtM (ORCPT ); Thu, 15 Jan 2015 22:49:12 -0500 Received: from 172.24.2.119 (EHLO szxeml407-hub.china.huawei.com) ([172.24.2.119]) by szxrg03-dlp.huawei.com (MOS 4.4.3-GA FastPath queued) with ESMTP id BAL07399; Fri, 16 Jan 2015 11:47:11 +0800 (CST) Received: from localhost.localdomain (10.175.100.166) by szxeml407-hub.china.huawei.com (10.82.67.94) with Microsoft SMTP Server id 14.3.158.1; Fri, 16 Jan 2015 11:46:53 +0800 From: Yijing Wang To: Bjorn Helgaas CC: Jiang Liu , , Yinghai Lu , , Marc Zyngier , , Russell King , , Thomas Gleixner , Tony Luck , , "David S. Miller" , "Guan Xuetao" , , , Liviu Dudau , "Arnd Bergmann" , Geert Uytterhoeven , "Yijing Wang" , David Howells , "Michal Simek" , Ralf Baechle , Koichi Yasutake , Sebastian Ott , Chris Metcalf , "Chris Zankel" , , , , , , Subject: [PATCH 02/28] PCI: Rip out pci_bus_add_devices() from pci_scan_root_bus() Date: Fri, 16 Jan 2015 09:44:00 +0800 Message-ID: <1421372666-12288-3-git-send-email-wangyijing@huawei.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1421372666-12288-1-git-send-email-wangyijing@huawei.com> References: <1421372666-12288-1-git-send-email-wangyijing@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.175.100.166] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A020206.54B889C2.0138, ss=1, re=0.001, recu=0.000, reip=0.000, cl=1, cld=1, fgs=0, ip=0.0.0.0, so=2013-05-26 15:14:31, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: 806736200eca051b9b2bdac3f130f77b Sender: linux-sh-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-sh@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Just like pci_scan_bus(), we also should rip out pci_bus_add_devices() from pci_scan_root_bus(). Lots platforms first call pci_scan_root_bus(), but after that, they call pci_bus_size_bridges() and pci_bus_assign_resources(). Place pci_bus_add_devices() in pci_scan_root_bus() hurts PCI scan logic. For arm hw_pci->scan() functions which call pci_scan_root_bus(), it's no need to change anything, because pci_bus_add_devices() will be called later in pci_common_init_dev(). Signed-off-by: Yijing Wang CC: David Howells CC: Tony Luck CC: Michal Simek CC: Ralf Baechle CC: Koichi Yasutake CC: Sebastian Ott CC: Thomas Gleixner CC: Chris Metcalf CC: Chris Zankel CC: linux-alpha@vger.kernel.org CC: linux-kernel@vger.kernel.org CC: linux-mips@linux-mips.org CC: linux-am33-list@redhat.com CC: linux-s390@vger.kernel.org CC: linux-sh@vger.kernel.org CC: sparclinux@vger.kernel.org CC: linux-pci@vger.kernel.org CC: linux-xtensa@linux-xtensa.org --- arch/alpha/kernel/pci.c | 2 ++ arch/frv/mb93090-mb00/pci-vdk.c | 6 ++++-- arch/ia64/sn/kernel/io_init.c | 1 + arch/microblaze/pci/pci-common.c | 1 + arch/mips/pci/pci.c | 1 + arch/mn10300/unit-asb2305/pci.c | 5 ++++- arch/s390/pci/pci.c | 2 +- arch/sh/drivers/pci/pci.c | 1 + arch/sparc/kernel/leon_pci.c | 1 + arch/tile/kernel/pci.c | 2 ++ arch/tile/kernel/pci_gx.c | 2 ++ arch/x86/pci/common.c | 1 + arch/xtensa/kernel/pci.c | 2 ++ drivers/pci/probe.c | 1 - 14 files changed, 23 insertions(+), 5 deletions(-) diff --git a/arch/alpha/kernel/pci.c b/arch/alpha/kernel/pci.c index 076c35c..97f9730 100644 --- a/arch/alpha/kernel/pci.c +++ b/arch/alpha/kernel/pci.c @@ -334,6 +334,8 @@ common_init_pci(void) bus = pci_scan_root_bus(NULL, next_busno, alpha_mv.pci_ops, hose, &resources); + if (bus) + pci_bus_add_devices(bus); hose->bus = bus; hose->need_domain_info = need_domain_info; next_busno = bus->busn_res.end + 1; diff --git a/arch/frv/mb93090-mb00/pci-vdk.c b/arch/frv/mb93090-mb00/pci-vdk.c index efa5d65..2b36044 100644 --- a/arch/frv/mb93090-mb00/pci-vdk.c +++ b/arch/frv/mb93090-mb00/pci-vdk.c @@ -316,6 +316,7 @@ void pcibios_fixup_bus(struct pci_bus *bus) int __init pcibios_init(void) { + struct pci_bus *bus; struct pci_ops *dir = NULL; LIST_HEAD(resources); @@ -383,12 +384,13 @@ int __init pcibios_init(void) printk("PCI: Probing PCI hardware\n"); pci_add_resource(&resources, &pci_ioport_resource); pci_add_resource(&resources, &pci_iomem_resource); - pci_scan_root_bus(NULL, 0, pci_root_ops, NULL, &resources); + bus = pci_scan_root_bus(NULL, 0, pci_root_ops, NULL, &resources); pcibios_irq_init(); pcibios_fixup_irqs(); pcibios_resource_survey(); - + if (bus) + pci_bus_add_devices(bus); return 0; } diff --git a/arch/ia64/sn/kernel/io_init.c b/arch/ia64/sn/kernel/io_init.c index 0b5ce82..63b43a6 100644 --- a/arch/ia64/sn/kernel/io_init.c +++ b/arch/ia64/sn/kernel/io_init.c @@ -272,6 +272,7 @@ sn_pci_controller_fixup(int segment, int busnum, struct pci_bus *bus) kfree(res); kfree(controller); } + pci_bus_add_devices(bus); } /* diff --git a/arch/microblaze/pci/pci-common.c b/arch/microblaze/pci/pci-common.c index b30e41c..009b271 100644 --- a/arch/microblaze/pci/pci-common.c +++ b/arch/microblaze/pci/pci-common.c @@ -1351,6 +1351,7 @@ static void pcibios_scan_phb(struct pci_controller *hose) hose->bus = bus; hose->last_busno = bus->busn_res.end; + pci_bus_add_devices(bus); } static int __init pcibios_init(void) diff --git a/arch/mips/pci/pci.c b/arch/mips/pci/pci.c index 1bf60b1..9eb54b5 100644 --- a/arch/mips/pci/pci.c +++ b/arch/mips/pci/pci.c @@ -114,6 +114,7 @@ static void pcibios_scanbus(struct pci_controller *hose) pci_bus_size_bridges(bus); pci_bus_assign_resources(bus); } + pci_bus_add_devices(bus); } } diff --git a/arch/mn10300/unit-asb2305/pci.c b/arch/mn10300/unit-asb2305/pci.c index 6b4339f..860aa35 100644 --- a/arch/mn10300/unit-asb2305/pci.c +++ b/arch/mn10300/unit-asb2305/pci.c @@ -345,6 +345,7 @@ void pcibios_fixup_bus(struct pci_bus *bus) */ static int __init pcibios_init(void) { + struct pci_bus *bus; resource_size_t io_offset, mem_offset; LIST_HEAD(resources); @@ -376,11 +377,13 @@ static int __init pcibios_init(void) pci_add_resource_offset(&resources, &pci_ioport_resource, io_offset); pci_add_resource_offset(&resources, &pci_iomem_resource, mem_offset); - pci_scan_root_bus(NULL, 0, &pci_direct_ampci, NULL, &resources); + bus = pci_scan_root_bus(NULL, 0, &pci_direct_ampci, NULL, &resources); pcibios_irq_init(); pcibios_fixup_irqs(); pcibios_resource_survey(); + if (bus) + pci_bus_add_devices(bus); return 0; } diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c index 3290f11..0b32769 100644 --- a/arch/s390/pci/pci.c +++ b/arch/s390/pci/pci.c @@ -756,7 +756,7 @@ static int zpci_scan_bus(struct zpci_dev *zdev) zpci_cleanup_bus_resources(zdev); return -EIO; } - + pci_bus_add_devices(zdev->bus); zdev->bus->max_bus_speed = zdev->max_bus_speed; return 0; } diff --git a/arch/sh/drivers/pci/pci.c b/arch/sh/drivers/pci/pci.c index 1bc09ee..efc1051 100644 --- a/arch/sh/drivers/pci/pci.c +++ b/arch/sh/drivers/pci/pci.c @@ -69,6 +69,7 @@ static void pcibios_scanbus(struct pci_channel *hose) pci_bus_size_bridges(bus); pci_bus_assign_resources(bus); + pci_bus_add_devices(bus); } else { pci_free_resource_list(&resources); } diff --git a/arch/sparc/kernel/leon_pci.c b/arch/sparc/kernel/leon_pci.c index 899b720..2971076 100644 --- a/arch/sparc/kernel/leon_pci.c +++ b/arch/sparc/kernel/leon_pci.c @@ -40,6 +40,7 @@ void leon_pci_init(struct platform_device *ofdev, struct leon_pci_info *info) /* Assign devices with resources */ pci_assign_unassigned_resources(); + pci_bus_add_devices(root_bus); } else { pci_free_resource_list(&resources); } diff --git a/arch/tile/kernel/pci.c b/arch/tile/kernel/pci.c index f70c789..83d3e30 100644 --- a/arch/tile/kernel/pci.c +++ b/arch/tile/kernel/pci.c @@ -339,6 +339,8 @@ int __init pcibios_init(void) struct pci_bus *next_bus; struct pci_dev *dev; + pci_bus_add_devices(root_bus); + list_for_each_entry(dev, &root_bus->devices, bus_list) { /* * Find the PCI host controller, ie. the 1st diff --git a/arch/tile/kernel/pci_gx.c b/arch/tile/kernel/pci_gx.c index 2c95f37..d7a0729 100644 --- a/arch/tile/kernel/pci_gx.c +++ b/arch/tile/kernel/pci_gx.c @@ -916,6 +916,8 @@ int __init pcibios_init(void) /* Configure the max_payload_size values for this domain. */ fixup_read_and_payload_sizes(controller); + pci_bus_add_devices(root_bus); + /* Alloc a PIO region for PCI memory access for each RC port. */ ret = gxio_trio_alloc_pio_regions(trio_context, 1, 0, 0); if (ret < 0) { diff --git a/arch/x86/pci/common.c b/arch/x86/pci/common.c index 7b20bcc..300d39e 100644 --- a/arch/x86/pci/common.c +++ b/arch/x86/pci/common.c @@ -475,6 +475,7 @@ void pcibios_scan_root(int busnum) pci_free_resource_list(&resources); kfree(sd); } + pci_bus_add_devices(bus); } void __init pcibios_set_cache_line_size(void) diff --git a/arch/xtensa/kernel/pci.c b/arch/xtensa/kernel/pci.c index 5b34033..f2ae64e 100644 --- a/arch/xtensa/kernel/pci.c +++ b/arch/xtensa/kernel/pci.c @@ -185,6 +185,8 @@ static int __init pcibios_init(void) pci_controller_apertures(pci_ctrl, &resources); bus = pci_scan_root_bus(NULL, pci_ctrl->first_busno, pci_ctrl->ops, pci_ctrl, &resources); + if (bus) + pci_bus_add_devices(bus); pci_ctrl->bus = bus; pci_ctrl->last_busno = bus->busn_res.end; if (next_busno <= pci_ctrl->last_busno) diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index 053c0f4..7cf577f 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -2087,7 +2087,6 @@ struct pci_bus *pci_scan_root_bus(struct device *parent, int bus, if (!found) pci_bus_update_busn_res_end(b, max); - pci_bus_add_devices(b); return b; } EXPORT_SYMBOL(pci_scan_root_bus);