From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pz0-f52.google.com ([209.85.210.52]:37352 "EHLO mail-pz0-f52.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752677Ab2DPQcP (ORCPT ); Mon, 16 Apr 2012 12:32:15 -0400 Received: by mail-pz0-f52.google.com with SMTP id e40so7132053dak.11 for ; Mon, 16 Apr 2012 09:32:15 -0700 (PDT) From: Jiang Liu To: Yinghai Lu , Kenji Kaneshige , Bjorn Helgaas Cc: Jiang Liu , Jiang Liu , Keping Chen , linux-pci@vger.kernel.org Subject: [PATCH RFC 01/17] PCI: introduce pci_bus_get()/pci_bus_put() to hide PCI implementation details Date: Tue, 17 Apr 2012 00:28:55 +0800 Message-Id: <1334593751-5916-2-git-send-email-jiang.liu@huawei.com> In-Reply-To: <1334593751-5916-1-git-send-email-jiang.liu@huawei.com> References: <1334593751-5916-1-git-send-email-jiang.liu@huawei.com> Sender: linux-pci-owner@vger.kernel.org List-ID: Introduce pci_bus_get()/pci_bus_put() to hide PCI implementation details. Signed-off-by: Jiang Liu --- drivers/pci/bus.c | 15 +++++++++++++++ include/linux/pci.h | 2 ++ 2 files changed, 17 insertions(+), 0 deletions(-) diff --git a/drivers/pci/bus.c b/drivers/pci/bus.c index 4ce5ef2..50f9c5d 100644 --- a/drivers/pci/bus.c +++ b/drivers/pci/bus.c @@ -35,6 +35,21 @@ void pci_add_resource_offset(struct list_head *resources, struct resource *res, } EXPORT_SYMBOL(pci_add_resource_offset); +struct pci_bus *pci_bus_get(struct pci_bus *bus) +{ + if (bus) + get_device(&bus->dev); + return bus; +} +EXPORT_SYMBOL(pci_bus_get); + +void pci_bus_put(struct pci_bus *bus) +{ + if (bus) + put_device(&bus->dev); +} +EXPORT_SYMBOL(pci_bus_put); + void pci_add_resource(struct list_head *resources, struct resource *res) { pci_add_resource_offset(resources, res, 0); diff --git a/include/linux/pci.h b/include/linux/pci.h index e444f5b..0603a60 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -912,6 +912,8 @@ int pci_request_selected_regions_exclusive(struct pci_dev *, int, const char *); void pci_release_selected_regions(struct pci_dev *, int); /* drivers/pci/bus.c */ +struct pci_bus *pci_bus_get(struct pci_bus *bus); +void pci_bus_put(struct pci_bus *bus); void pci_add_resource(struct list_head *resources, struct resource *res); void pci_add_resource_offset(struct list_head *resources, struct resource *res, resource_size_t offset); -- 1.7.5.4