diff --git a/src/include/device/device.h b/src/include/device/device.h
index 64add5d..1c8f1db 100644
--- a/src/include/device/device.h
+++ b/src/include/device/device.h
@@ -1,4 +1,5 @@
 #ifndef DEVICE_H
+
 #define DEVICE_H
 
 /*
@@ -275,6 +276,8 @@
 DEVTREE_CONST struct device *dev_find_slot_on_smbus(unsigned int bus,
 							unsigned int addr);
 DEVTREE_CONST struct device *dev_find_slot_pnp(u16 port, u16 device);
+DEVTREE_CONST struct device *dev_bus_each_child(const struct bus *parent,
+				DEVTREE_CONST struct device *prev_child);
 
 void scan_smbus(struct device *bus);
 void scan_generic_bus(struct device *bus);