diff --git a/src/include/device/device.h b/src/include/device/device.h
index a200de0..007c51f 100644
--- a/src/include/device/device.h
+++ b/src/include/device/device.h
@@ -288,6 +288,7 @@
 DEVTREE_CONST struct device *pcidev_path_behind(const struct bus *parent,
 		pci_devfn_t devfn);
 DEVTREE_CONST struct device *pcidev_path_on_root(pci_devfn_t devfn);
+DEVTREE_CONST struct device *pcidev_path_on_bus(unsigned int bus, pci_devfn_t devfn);
 DEVTREE_CONST struct device *pcidev_on_root(uint8_t dev, uint8_t fn);
 DEVTREE_CONST struct bus *pci_root_bus(void);