--- zzzz-none-000/linux-3.10.107/include/drm/ttm/ttm_page_alloc.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/include/drm/ttm/ttm_page_alloc.h	2021-02-04 17:41:59.000000000 +0000
@@ -29,6 +29,8 @@
 #include <drm/ttm/ttm_bo_driver.h>
 #include <drm/ttm/ttm_memory.h>
 
+struct device;
+
 /**
  * Initialize pool allocator.
  */
@@ -62,7 +64,7 @@
 extern int ttm_page_alloc_debugfs(struct seq_file *m, void *data);
 
 
-#ifdef CONFIG_SWIOTLB
+#if defined(CONFIG_SWIOTLB) || defined(CONFIG_INTEL_IOMMU)
 /**
  * Initialize pool allocator.
  */
@@ -94,6 +96,15 @@
 {
 	return 0;
 }
+static inline int ttm_dma_populate(struct ttm_dma_tt *ttm_dma,
+				   struct device *dev)
+{
+	return -ENOMEM;
+}
+static inline void ttm_dma_unpopulate(struct ttm_dma_tt *ttm_dma,
+				      struct device *dev)
+{
+}
 #endif
 
 #endif