diff --git a/sys/arm/include/pmap-v6.h b/sys/arm/include/pmap-v6.h
index 10296db2ccbf..9c586155c121 100644
--- a/sys/arm/include/pmap-v6.h
+++ b/sys/arm/include/pmap-v6.h
@@ -166,7 +166,6 @@ extern ttb_entry_t pmap_kern_ttb; 	/* TTB for kernel pmap */
 void pmap_bootstrap(vm_offset_t);
 void pmap_kenter(vm_offset_t, vm_paddr_t);
 void pmap_kremove(vm_offset_t);
-void *pmap_mapdev_attr(vm_paddr_t, vm_size_t, int);
 boolean_t pmap_page_is_mapped(vm_page_t);
 
 void pmap_tlb_flush(pmap_t, vm_offset_t);
diff --git a/sys/arm/include/pmap.h b/sys/arm/include/pmap.h
index 044483ddace7..5debffcef51c 100644
--- a/sys/arm/include/pmap.h
+++ b/sys/arm/include/pmap.h
@@ -53,6 +53,12 @@ void pmap_page_set_memattr(vm_page_t, vm_memattr_t);
 void *pmap_mapdev(vm_paddr_t, vm_size_t);
 void pmap_unmapdev(vm_offset_t, vm_size_t);
 
+static inline void *
+pmap_mapdev_attr(vm_paddr_t addr, vm_size_t size, int attr)
+{
+	panic("%s is not implemented yet!\n", __func__);
+}
+
 struct pcb;
 void pmap_set_pcb_pagedir(pmap_t, struct pcb *);