From patchwork Tue Jan 27 21:00:01 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Murali Karicheri X-Patchwork-Id: 5720551 Return-Path: X-Original-To: patchwork-linux-arm@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 8F7C39F2ED for ; Tue, 27 Jan 2015 21:04:02 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id B562E20218 for ; Tue, 27 Jan 2015 21:04:01 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id D099620221 for ; Tue, 27 Jan 2015 21:04:00 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1YGDH3-00047q-Qz; Tue, 27 Jan 2015 21:02:13 +0000 Received: from devils.ext.ti.com ([198.47.26.153]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1YGDFv-0003R4-0Z for linux-arm-kernel@lists.infradead.org; Tue, 27 Jan 2015 21:01:05 +0000 Received: from dlelxv90.itg.ti.com ([172.17.2.17]) by devils.ext.ti.com (8.13.7/8.13.7) with ESMTP id t0RL0BPZ005236; Tue, 27 Jan 2015 15:00:11 -0600 Received: from DFLE72.ent.ti.com (dfle72.ent.ti.com [128.247.5.109]) by dlelxv90.itg.ti.com (8.14.3/8.13.8) with ESMTP id t0RL09Qn017180; Tue, 27 Jan 2015 15:00:10 -0600 Received: from dflp32.itg.ti.com (10.64.6.15) by DFLE72.ent.ti.com (128.247.5.109) with Microsoft SMTP Server id 14.3.224.2; Tue, 27 Jan 2015 15:00:09 -0600 Received: from ula0868495.itg.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by dflp32.itg.ti.com (8.14.3/8.13.8) with ESMTP id t0RL05dr012736; Tue, 27 Jan 2015 15:00:09 -0600 From: Murali Karicheri To: , , , , Subject: [PATCH v5 4/8] PCI: add helper functions pci_get[put]_host_bridge_device() Date: Tue, 27 Jan 2015 16:00:01 -0500 Message-ID: <1422392405-32196-5-git-send-email-m-karicheri2@ti.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1422392405-32196-1-git-send-email-m-karicheri2@ti.com> References: <1422392405-32196-1-git-send-email-m-karicheri2@ti.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150127_130103_186140_5E1FAED0 X-CRM114-Status: UNSURE ( 7.75 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -5.0 (-----) Cc: Russell King , Arnd Bergmann , Joerg Roedel , Will Deacon , Rob Herring , Murali Karicheri , Suravee Suthikulpanit , Grant Likely X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, 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 a helper function to get/put the root bus's host bridge device. Cc: Joerg Roedel Cc: Grant Likely Cc: Rob Herring Cc: Will Deacon Cc: Russell King Cc: Arnd Bergmann Cc: Suravee Suthikulpanit Acked-by: Bjorn Helgaas Signed-off-by: Murali Karicheri --- 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 0e5f3c9..f58e05b 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 9603094..d677c66 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -513,6 +513,9 @@ 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) {