--- zzzz-none-000/linux-3.10.107/drivers/iommu/of_iommu.c	2017-06-27 09:49:32.000000000 +0000
+++ vr9-7490-729/linux-3.10.107/drivers/iommu/of_iommu.c	2021-11-10 11:53:55.000000000 +0000
@@ -20,6 +20,7 @@
 #include <linux/export.h>
 #include <linux/limits.h>
 #include <linux/of.h>
+#include <linux/of_iommu.h>
 
 /**
  * of_get_dma_window - Parse *dma-window property and returns 0 if found.