Merge branch 'core-iommu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...

[pandora-kernel.git] / include / linux / pci.h

diff --git a/include/linux/pci.h b/include/linux/pci.h
index 2d29218..4e4203a 100644 (file)
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -1617,5 +1617,16 @@ static inline void pci_set_bus_of_node(struct pci_bus *bus) { }
 static inline void pci_release_bus_of_node(struct pci_bus *bus) { }
 #endif  /* CONFIG_OF */
 
+/**
+ * pci_find_upstream_pcie_bridge - find upstream PCIe-to-PCI bridge of a device
+ * @pdev: the PCI device
+ *
+ * if the device is PCIE, return NULL
+ * if the device isn't connected to a PCIe bridge (that is its parent is a
+ * legacy PCI bridge and the bridge is directly connected to bus 0), return its
+ * parent
+ */
+struct pci_dev *pci_find_upstream_pcie_bridge(struct pci_dev *pdev);
+
 #endif /* __KERNEL__ */
 #endif /* LINUX_PCI_H */