From mboxrd@z Thu Jan 1 00:00:00 1970 From: Will Davis Subject: [PATCH v5 07/13] PCI: Export pci_find_host_bridge() Date: Tue, 18 Aug 2015 14:04:03 -0500 Message-ID: <1439924649-29698-8-git-send-email-wdavis@nvidia.com> References: <1439924649-29698-1-git-send-email-wdavis@nvidia.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1439924649-29698-1-git-send-email-wdavis-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Errors-To: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org To: Bjorn Helgaas Cc: Jerome Glisse , linux-pci-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Jonathan Corbet , iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org, Will Davis , John Hubbard , Terence Ripperda , "David S. Miller" List-Id: iommu@lists.linux-foundation.org Return the struct pci_host_bridge corresponding to the given struct pci_bus. Signed-off-by: Will Davis --- drivers/pci/host-bridge.c | 19 ++----------------- include/linux/pci.h | 7 +++++++ 2 files changed, 9 insertions(+), 17 deletions(-) diff --git a/drivers/pci/host-bridge.c b/drivers/pci/host-bridge.c index 5f4a2e0..6c2c82a 100644 --- a/drivers/pci/host-bridge.c +++ b/drivers/pci/host-bridge.c @@ -8,25 +8,10 @@ #include "pci.h" -static struct pci_bus *find_pci_root_bus(struct pci_bus *bus) -{ - while (bus->parent) - bus = bus->parent; - - return bus; -} - -struct pci_host_bridge *pci_find_host_bridge(struct pci_bus *bus) -{ - struct pci_bus *root_bus = find_pci_root_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; + struct pci_host_bridge *host_bridge = pci_find_host_bridge(dev->bus); + struct device *bridge = &host_bridge->dev; kobject_get(&bridge->kobj); return bridge; diff --git a/include/linux/pci.h b/include/linux/pci.h index 8a0321a..d58063e 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -512,6 +512,13 @@ static inline struct pci_dev *pci_upstream_bridge(struct pci_dev *dev) return dev->bus->self; } +static inline struct pci_host_bridge *pci_find_host_bridge(struct pci_bus *bus) +{ + while (bus->parent) + bus = bus->parent; + return to_pci_host_bridge(bus->bridge); +} + struct device *pci_get_host_bridge_device(struct pci_dev *dev); void pci_put_host_bridge_device(struct device *dev); -- 2.5.0