diff --git a/sys/compat/linuxkpi/common/include/linux/io.h b/sys/compat/linuxkpi/common/include/linux/io.h
index 598ff8e0376..4690653cfc8 100644
--- a/sys/compat/linuxkpi/common/include/linux/io.h
+++ b/sys/compat/linuxkpi/common/include/linux/io.h
@@ -403,6 +403,13 @@ _ioremap_attr(vm_paddr_t _phys_addr, unsigned long _size, int _attr)
 }
 #endif
 
+struct device;
+static inline void *
+devm_ioremap(struct device *dev, resource_size_t offset, resource_size_t size)
+{
+	return (NULL);
+}
+
 #ifdef VM_MEMATTR_DEVICE
 #define	ioremap_nocache(addr, size)					\
     _ioremap_attr((addr), (size), VM_MEMATTR_DEVICE)