From patchwork Tue Mar 3 17:52:11 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Murali Karicheri X-Patchwork-Id: 5925161 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 72E31BF440 for ; Tue, 3 Mar 2015 17:55:54 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 99A7F2046F for ; Tue, 3 Mar 2015 17:55:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B486820457 for ; Tue, 3 Mar 2015 17:55:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932495AbbCCRw7 (ORCPT ); Tue, 3 Mar 2015 12:52:59 -0500 Received: from bear.ext.ti.com ([192.94.94.41]:43274 "EHLO bear.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757465AbbCCRw4 (ORCPT ); Tue, 3 Mar 2015 12:52:56 -0500 Received: from dflxv15.itg.ti.com ([128.247.5.124]) by bear.ext.ti.com (8.13.7/8.13.7) with ESMTP id t23HqBw2013208; Tue, 3 Mar 2015 11:52:11 -0600 Received: from DFLE73.ent.ti.com (dfle73.ent.ti.com [128.247.5.110]) by dflxv15.itg.ti.com (8.14.3/8.13.8) with ESMTP id t23HqAQK018101; Tue, 3 Mar 2015 11:52:10 -0600 Received: from dlep33.itg.ti.com (157.170.170.75) by DFLE73.ent.ti.com (128.247.5.110) with Microsoft SMTP Server id 14.3.224.2; Tue, 3 Mar 2015 11:52:10 -0600 Received: from localhost.localdomain (ileax41-snat.itg.ti.com [10.172.224.153]) by dlep33.itg.ti.com (8.14.3/8.13.8) with ESMTP id t23Hq60V005094; Tue, 3 Mar 2015 11:52:09 -0600 From: Murali Karicheri To: , , , , CC: Murali Karicheri , Bjorn Helgaas , Joerg Roedel , Grant Likely , Rob Herring , Russell King , Arnd Bergmann Subject: [PATCH v8 4/7] PCI: Add helper functions pci_get[put]_host_bridge_device() Date: Tue, 3 Mar 2015 12:52:11 -0500 Message-ID: <1425405134-24707-5-git-send-email-m-karicheri2@ti.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1425405134-24707-1-git-send-email-m-karicheri2@ti.com> References: <1425405134-24707-1-git-send-email-m-karicheri2@ti.com> MIME-Version: 1.0 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 Add helper functions to get/put the root bus's host bridge device. Tested-by: Suravee Suthikulpanit (AMD Seattle) Signed-off-by: Murali Karicheri Signed-off-by: Bjorn Helgaas Reviewed-by: Catalin Marinas Acked-by: Will Deacon CC: Joerg Roedel CC: Grant Likely CC: Rob Herring CC: Russell King CC: Arnd Bergmann --- drivers/pci/host-bridge.c | 14 ++++++++++++++ include/linux/pci.h | 3 +++ 2 files changed, 17 insertions(+) diff --git a/drivers/pci/host-bridge.c b/drivers/pci/host-bridge.c index 39b2dbe..3e5bbf9 100644 --- a/drivers/pci/host-bridge.c +++ b/drivers/pci/host-bridge.c @@ -23,6 +23,20 @@ static struct pci_host_bridge *find_pci_host_bridge(struct pci_bus *bus) return to_pci_host_bridge(root_bus->bridge); } +struct device *pci_get_host_bridge_device(struct pci_dev *dev) +{ + struct pci_bus *root_bus = find_pci_root_bus(dev->bus); + struct device *bridge = root_bus->bridge; + + kobject_get(&bridge->kobj); + return bridge; +} + +void pci_put_host_bridge_device(struct device *dev) +{ + kobject_put(&dev->kobj); +} + void pci_set_host_bridge_release(struct pci_host_bridge *bridge, void (*release_fn)(struct pci_host_bridge *), void *release_data) diff --git a/include/linux/pci.h b/include/linux/pci.h index 211e9da..a379513 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -510,6 +510,9 @@ static inline struct pci_dev *pci_upstream_bridge(struct pci_dev *dev) return dev->bus->self; } +struct device *pci_get_host_bridge_device(struct pci_dev *dev); +void pci_put_host_bridge_device(struct device *dev); + #ifdef CONFIG_PCI_MSI static inline bool pci_dev_msi_enabled(struct pci_dev *pci_dev) {