From patchwork Tue Apr 21 11:34:24 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yijing Wang X-Patchwork-Id: 6247541 X-Patchwork-Delegate: bhelgaas@google.com Return-Path: X-Original-To: patchwork-linux-pci@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 07853BF4A6 for ; Tue, 21 Apr 2015 11:49:11 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id DA40A202B8 for ; Tue, 21 Apr 2015 11:49:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9629D202B4 for ; Tue, 21 Apr 2015 11:49:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754749AbbDULiT (ORCPT ); Tue, 21 Apr 2015 07:38:19 -0400 Received: from szxga01-in.huawei.com ([58.251.152.64]:4561 "EHLO szxga01-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751773AbbDULiK (ORCPT ); Tue, 21 Apr 2015 07:38:10 -0400 Received: from 172.24.2.119 (EHLO szxeml431-hub.china.huawei.com) ([172.24.2.119]) by szxrg01-dlp.huawei.com (MOS 4.3.7-GA FastPath queued) with ESMTP id CML53585; Tue, 21 Apr 2015 19:37:54 +0800 (CST) Received: from localhost.localdomain (10.175.100.166) by szxeml431-hub.china.huawei.com (10.82.67.208) with Microsoft SMTP Server id 14.3.158.1; Tue, 21 Apr 2015 19:37:44 +0800 From: Yijing Wang To: Bjorn Helgaas CC: Jiang Liu , , Yinghai Lu , , Marc Zyngier , , Russell King , , , Thomas Gleixner , Benjamin Herrenschmidt , Rusty Russell , Tony Luck , , "David S. Miller" , "Guan Xuetao" , , , Liviu Dudau , "Arnd Bergmann" , Geert Uytterhoeven , "Yijing Wang" Subject: [PATCH v10 05/29] PCI: Remove argument bus for pci_create_root_bus() Date: Tue, 21 Apr 2015 19:34:24 +0800 Message-ID: <1429616088-10249-6-git-send-email-wangyijing@huawei.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1429616088-10249-1-git-send-email-wangyijing@huawei.com> References: <1429616088-10249-1-git-send-email-wangyijing@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.175.100.166] X-CFilter-Loop: Reflected Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@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 All pci_create_root_bus() callers have supplied busn resource, the argument bus is equal to busn_res->start, clean up the redundant argument bus for simplicity. Signed-off-by: Yijing Wang --- arch/ia64/pci/pci.c | 3 +-- arch/powerpc/kernel/pci-common.c | 2 +- arch/sparc/kernel/pci.c | 2 +- arch/x86/pci/acpi.c | 4 ++-- drivers/parisc/dino.c | 2 +- drivers/parisc/lba_pci.c | 3 +-- drivers/pci/host/pci-mvebu.c | 2 +- drivers/pci/host/pci-tegra.c | 2 +- drivers/pci/host/pci-xgene.c | 2 +- drivers/pci/host/pcie-designware.c | 4 ++-- drivers/pci/probe.c | 26 ++++++++++++++++++++------ include/linux/pci.h | 2 +- 12 files changed, 33 insertions(+), 21 deletions(-) diff --git a/arch/ia64/pci/pci.c b/arch/ia64/pci/pci.c index c642bc8..84f1eb8 100644 --- a/arch/ia64/pci/pci.c +++ b/arch/ia64/pci/pci.c @@ -424,7 +424,6 @@ struct pci_bus *pci_acpi_scan_root(struct acpi_pci_root *root) { struct acpi_device *device = root->device; int domain = root->segment; - int bus = root->secondary.start; struct pci_controller *controller; struct pci_root_info *info = NULL; int busnum = root->secondary.start; @@ -465,7 +464,7 @@ struct pci_bus *pci_acpi_scan_root(struct acpi_pci_root *root) * should handle the case here, but it appears that IA64 hasn't * such quirk. So we just ignore the case now. */ - pbus = pci_create_root_bus(NULL, domain, bus, &pci_root_ops, + pbus = pci_create_root_bus(NULL, domain, &pci_root_ops, controller, &info->resources); if (!pbus) { pci_free_resource_list(&info->resources); diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c index 9913f6c..9acc08d 100644 --- a/arch/powerpc/kernel/pci-common.c +++ b/arch/powerpc/kernel/pci-common.c @@ -1613,7 +1613,7 @@ void pcibios_scan_phb(struct pci_controller *hose) /* Create an empty bus for the toplevel */ bus = pci_create_root_bus(hose->parent, hose->global_number, - hose->first_busno, hose->ops, hose, &resources); + hose->ops, hose, &resources); if (bus == NULL) { pr_err("Failed to create bus for PCI domain %04x\n", hose->global_number); diff --git a/arch/sparc/kernel/pci.c b/arch/sparc/kernel/pci.c index e40e456..6ff363c 100644 --- a/arch/sparc/kernel/pci.c +++ b/arch/sparc/kernel/pci.c @@ -667,7 +667,7 @@ struct pci_bus *pci_scan_one_pbm(struct pci_pbm_info *pbm, pbm->busn.end = pbm->pci_last_busno; pbm->busn.flags = IORESOURCE_BUS; pci_add_resource(&resources, &pbm->busn); - bus = pci_create_root_bus(parent, pbm->index, pbm->pci_first_busno, + bus = pci_create_root_bus(parent, pbm->index, pbm->pci_ops, pbm, &resources); if (!bus) { printk(KERN_ERR "Failed to create bus for %s\n", diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c index 7563855..d6aab1c 100644 --- a/arch/x86/pci/acpi.c +++ b/arch/x86/pci/acpi.c @@ -430,8 +430,8 @@ struct pci_bus *pci_acpi_scan_root(struct acpi_pci_root *root) if (!setup_mcfg_map(info, domain, (u8)root->secondary.start, (u8)root->secondary.end, root->mcfg_addr)) - bus = pci_create_root_bus(NULL, domain, busnum, - &pci_root_ops, sd, &resources); + bus = pci_create_root_bus(NULL, domain, &pci_root_ops, + sd, &resources); if (bus) { pci_scan_child_bus(bus); diff --git a/drivers/parisc/dino.c b/drivers/parisc/dino.c index f375252..56abc43 100644 --- a/drivers/parisc/dino.c +++ b/drivers/parisc/dino.c @@ -986,7 +986,7 @@ static int __init dino_probe(struct parisc_device *dev) ** with configuration accessor functions. */ dino_dev->hba.hba_bus = bus = pci_create_root_bus(&dev->dev, - 0, dino_current_bus, &dino_cfg_ops, NULL, &resources); + 0, &dino_cfg_ops, NULL, &resources); if (!bus) { printk(KERN_ERR "ERROR: failed to scan PCI bus on %s (duplicate bus number %d?)\n", dev_name(&dev->dev), dino_current_bus); diff --git a/drivers/parisc/lba_pci.c b/drivers/parisc/lba_pci.c index 2949030..0b9ed96 100644 --- a/drivers/parisc/lba_pci.c +++ b/drivers/parisc/lba_pci.c @@ -1563,8 +1563,7 @@ lba_driver_probe(struct parisc_device *dev) dev->dev.platform_data = lba_dev; lba_bus = lba_dev->hba.hba_bus = - pci_create_root_bus(&dev->dev, 0, lba_dev->hba.bus_num.start, - cfg_ops, NULL, &resources); + pci_create_root_bus(&dev->dev, 0, cfg_ops, NULL, &resources); if (!lba_bus) { pci_free_resource_list(&resources); return 0; diff --git a/drivers/pci/host/pci-mvebu.c b/drivers/pci/host/pci-mvebu.c index bc4c6c0..c91a8b4 100644 --- a/drivers/pci/host/pci-mvebu.c +++ b/drivers/pci/host/pci-mvebu.c @@ -756,7 +756,7 @@ static struct pci_bus *mvebu_pcie_scan_bus(int nr, struct pci_sys_data *sys) struct mvebu_pcie *pcie = sys_to_pcie(sys); struct pci_bus *bus; - bus = pci_create_root_bus(&pcie->pdev->dev, -1, sys->busnr, + bus = pci_create_root_bus(&pcie->pdev->dev, -1, &mvebu_pcie_ops, sys, &sys->resources); if (!bus) return NULL; diff --git a/drivers/pci/host/pci-tegra.c b/drivers/pci/host/pci-tegra.c index 94e9362..3e45142 100644 --- a/drivers/pci/host/pci-tegra.c +++ b/drivers/pci/host/pci-tegra.c @@ -635,7 +635,7 @@ static struct pci_bus *tegra_pcie_scan_bus(int nr, struct pci_sys_data *sys) struct tegra_pcie *pcie = sys_to_pcie(sys); struct pci_bus *bus; - bus = pci_create_root_bus(pcie->dev, -1, sys->busnr, &tegra_pcie_ops, + bus = pci_create_root_bus(pcie->dev, -1, &tegra_pcie_ops, sys, &sys->resources); if (!bus) return NULL; diff --git a/drivers/pci/host/pci-xgene.c b/drivers/pci/host/pci-xgene.c index c048e03..f11e77b 100644 --- a/drivers/pci/host/pci-xgene.c +++ b/drivers/pci/host/pci-xgene.c @@ -499,7 +499,7 @@ static int xgene_pcie_probe_bridge(struct platform_device *pdev) if (ret) return ret; - bus = pci_create_root_bus(&pdev->dev, -1, 0, + bus = pci_create_root_bus(&pdev->dev, -1, &xgene_pcie_ops, port, &res); if (!bus) return -ENOMEM; diff --git a/drivers/pci/host/pcie-designware.c b/drivers/pci/host/pcie-designware.c index 93778b9..8854d25 100644 --- a/drivers/pci/host/pcie-designware.c +++ b/drivers/pci/host/pcie-designware.c @@ -728,8 +728,8 @@ static struct pci_bus *dw_pcie_scan_bus(int nr, struct pci_sys_data *sys) struct pcie_port *pp = sys_to_pcie(sys); pp->root_bus_nr = sys->busnr; - bus = pci_create_root_bus(pp->dev, -1, sys->busnr, - &dw_pcie_ops, sys, &sys->resources); + bus = pci_create_root_bus(pp->dev, -1, &dw_pcie_ops, sys, + &sys->resources); if (!bus) return NULL; diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index 9f9445e..52b9257 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -59,6 +59,17 @@ static struct resource *get_pci_domain_busn_res(int domain_nr) return &r->res; } +static struct resource_entry *pci_busn_resource( + struct list_head *resources) +{ + struct resource_entry *entry; + + resource_list_for_each_entry(entry, resources) + if (entry->res->flags & IORESOURCE_BUS) + return entry; + return NULL; +} + static int find_anything(struct device *dev, void *data) { return 1; @@ -1892,18 +1903,21 @@ void __weak pcibios_remove_bus(struct pci_bus *bus) } struct pci_bus *pci_create_root_bus(struct device *parent, int domain, - int bus, struct pci_ops *ops, void *sysdata, - struct list_head *resources) + struct pci_ops *ops, void *sysdata, struct list_head *resources) { - int error; + int error, bus; struct pci_host_bridge *bridge; struct pci_bus *b, *b2; - struct resource_entry *window, *n; + struct resource_entry *window, *n, *busn_res; struct resource *res; resource_size_t offset; char bus_addr[64]; char *fmt; + busn_res = pci_busn_resource(resources); + if (!busn_res) + return NULL; + bus = busn_res->res->start; b = pci_alloc_bus(NULL); if (!b) return NULL; @@ -2077,7 +2091,7 @@ struct pci_bus *pci_scan_root_bus(struct device *parent, int domain, break; } - b = pci_create_root_bus(parent, domain, bus, ops, + b = pci_create_root_bus(parent, domain, ops, sysdata, resources); if (!b) return NULL; @@ -2107,7 +2121,7 @@ struct pci_bus *pci_scan_bus(int domain, int bus, pci_add_resource(&resources, &ioport_resource); pci_add_resource(&resources, &iomem_resource); pci_add_resource(&resources, &busn_resource); - b = pci_create_root_bus(NULL, domain, bus, ops, sysdata, + b = pci_create_root_bus(NULL, domain, ops, sysdata, &resources); if (b) { pci_scan_child_bus(b); diff --git a/include/linux/pci.h b/include/linux/pci.h index 0bdc639..df77a62 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -776,7 +776,7 @@ struct pci_bus *pci_find_bus(int domain, int busnr); void pci_bus_add_devices(const struct pci_bus *bus); struct pci_bus *pci_scan_bus(int domain, int bus, struct pci_ops *ops, void *sysdata); -struct pci_bus *pci_create_root_bus(struct device *parent, int domain, int bus, +struct pci_bus *pci_create_root_bus(struct device *parent, int domain, struct pci_ops *ops, void *sysdata, struct list_head *resources); int pci_bus_insert_busn_res(struct pci_bus *b, int bus, int busmax);