Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753149AbbDCJ3t (ORCPT ); Fri, 3 Apr 2015 05:29:49 -0400 Received: from szxga01-in.huawei.com ([58.251.152.64]:55218 "EHLO szxga01-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752591AbbDCJ3K (ORCPT ); Fri, 3 Apr 2015 05:29:10 -0400 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 v9 21/30] sparc/PCI: Use pci_scan_host_bridge() for simplicity Date: Fri, 3 Apr 2015 17:25:55 +0800 Message-ID: <1428053164-28277-23-git-send-email-wangyijing@huawei.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1428053164-28277-1-git-send-email-wangyijing@huawei.com> References: <1428053164-28277-1-git-send-email-wangyijing@huawei.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.175.100.166] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2396 Lines: 74 Now we could use pci_scan_host_bridge() to scan pci buses, provide sparc specific pci_host_bridge_ops. Signed-off-by: Yijing Wang CC: "David S. Miller" CC: sparclinux@vger.kernel.org --- arch/sparc/kernel/pci.c | 28 ++++++++++++++++++++++------ 1 files changed, 22 insertions(+), 6 deletions(-) diff --git a/arch/sparc/kernel/pci.c b/arch/sparc/kernel/pci.c index e40e456..fa95a1d 100644 --- a/arch/sparc/kernel/pci.c +++ b/arch/sparc/kernel/pci.c @@ -650,12 +650,27 @@ static void pci_claim_bus_resources(struct pci_bus *bus) pci_claim_bus_resources(child_bus); } +static int pci_host_of_scan_bus( + struct pci_host_bridge *host) +{ + struct pci_pbm_info *pbm = dev_get_drvdata(&host->dev); + struct device_node *node = pbm->op->dev.of_node; + + pci_of_scan_bus(pbm, node, host->bus); + return pci_bus_child_max_busnr(host->bus); +} + +static struct pci_host_bridge_ops pci_host_ops = { + .scan_bus = pci_host_of_scan_bus, +}; + struct pci_bus *pci_scan_one_pbm(struct pci_pbm_info *pbm, struct device *parent) { LIST_HEAD(resources); struct device_node *node = pbm->op->dev.of_node; struct pci_bus *bus; + struct pci_host_bridge *host; printk("PCI: Scanning PBM %s\n", node->full_name); @@ -667,16 +682,17 @@ 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, - pbm->pci_ops, pbm, &resources); - if (!bus) { - printk(KERN_ERR "Failed to create bus for %s\n", - node->full_name); + pci_host_ops.pci_ops = pbm->pci_ops; + host = pci_scan_host_bridge(parent, pbm->index, pbm->pci_first_busno, + pbm, &resources, &pci_host_ops); + if (!host) { + pr_err("Failed to create host bridge pci%04x:%02x for %s\n", + pbm->index, pbm->pci_first_busno, node->full_name); pci_free_resource_list(&resources); return NULL; } - pci_of_scan_bus(pbm, node, bus); + bus = host->bus; pci_bus_register_of_sysfs(bus); pci_claim_bus_resources(bus); -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/