diff options
| author |   Murali Karicheri <m-karicheri2@ti.com> | 2015-03-03 12:52:11 -0500 |
|---|---|---|
| committer |   Bjorn Helgaas <bhelgaas@google.com> | 2015-03-03 14:42:57 -0600 |
| commit | 6675a601d72be408025e675599702e30a99188aa (patch) | |
| tree | 3eeb9457aba240725c97f1aff5eb944b9ef1a8c2 /drivers/pci | |
| parent | of: Fix size when dma-range is not used (diff) | |
| download | linux-dev-6675a601d72be408025e675599702e30a99188aa.tar.xz linux-dev-6675a601d72be408025e675599702e30a99188aa.zip | |
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')
| -rw-r--r-- | drivers/pci/host-bridge.c | 14 |
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) |