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authorMurali Karicheri <m-karicheri2@ti.com>2015-03-03 20:52:11 +0300
committerBjorn Helgaas <bhelgaas@google.com>2015-03-03 23:42:57 +0300
commit6675a601d72be408025e675599702e30a99188aa (patch)
tree3eeb9457aba240725c97f1aff5eb944b9ef1a8c2 /drivers/pci/host-bridge.c
parent0c79c81c779fe54e67c0ce8c1fda551ca57d8a35 (diff)
downloadlinux-6675a601d72be408025e675599702e30a99188aa.tar.xz
PCI: Add helper functions pci_get[put]_host_bridge_device()
Add helper functions to get/put the root bus's host bridge device. Tested-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com> (AMD Seattle) Signed-off-by: Murali Karicheri <m-karicheri2@ti.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Will Deacon <will.deacon@arm.com> CC: Joerg Roedel <joro@8bytes.org> CC: Grant Likely <grant.likely@linaro.org> CC: Rob Herring <robh+dt@kernel.org> CC: Russell King <linux@arm.linux.org.uk> CC: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'drivers/pci/host-bridge.c')
-rw-r--r--drivers/pci/host-bridge.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/pci/host-bridge.c b/drivers/pci/host-bridge.c
index 39b2dbe585aa..3e5bbf9e8889 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)