drm_mm_debug.patch

diff --git a/drivers/gpu/drm/drm_mm.c b/drivers/gpu/drm/drm_mm.c
index 3427b11..facb5f5 100644
--- a/drivers/gpu/drm/drm_mm.c
+++ b/drivers/gpu/drm/drm_mm.c
@@ -260,6 +260,8 @@ static void drm_mm_insert_helper_range(struct drm_mm_node *hole_node,
 	u64 adj_start = hole_start;
 	u64 adj_end = hole_end;
 
+	DRM_DEBUG_DRIVER("hole_start=0x%llx, hole_end=0x%llx, adj_start=0x%llx, adj_end=0x%llx, start=0x%llx, end=0x%llx, alignment=%u\n",
+			 hole_start, hole_end, adj_start, adj_end, start, end, alignment);
 	BUG_ON(!hole_node->hole_follows || node->allocated);
 
 	if (adj_start < start)
@@ -270,6 +272,9 @@ static void drm_mm_insert_helper_range(struct drm_mm_node *hole_node,
 	if (flags & DRM_MM_CREATE_TOP)
 		adj_start = adj_end - size;
 
+	DRM_DEBUG_DRIVER("adj_start=0x%llx, adj_end=0x%llx\n",
+			 adj_start, adj_end);
+
 	if (mm->color_adjust)
 		mm->color_adjust(hole_node, color, &adj_start, &adj_end);
 
@@ -284,6 +289,9 @@ static void drm_mm_insert_helper_range(struct drm_mm_node *hole_node,
 			else
 				adj_start += alignment - rem;
 		}
+
+		DRM_DEBUG_DRIVER("rem=0x%x, adj_start=0x%llx\n",
+				 rem, adj_start);
 	}
 
 	if (adj_start == hole_start) {
@@ -338,15 +346,20 @@ int drm_mm_insert_node_in_range_generic(struct drm_mm *mm, struct drm_mm_node *n
 {
 	struct drm_mm_node *hole_node;
 
+	DRM_DEBUG_DRIVER("====\n");
+	DRM_DEBUG_DRIVER("start=0x%llx, end=0x%llx\n", start, end);
 	hole_node = drm_mm_search_free_in_range_generic(mm,
 							size, alignment, color,
 							start, end, sflags);
-	if (!hole_node)
+	if (!hole_node) {
+		DRM_DEBUG_DRIVER("!hole_node\n");
 		return -ENOSPC;
+	}
 
 	drm_mm_insert_helper_range(hole_node, node,
 				   size, alignment, color,
 				   start, end, aflags);
+	DRM_DEBUG_DRIVER("====\n");
 	return 0;
 }
 EXPORT_SYMBOL(drm_mm_insert_node_in_range_generic);
@@ -475,6 +488,8 @@ static struct drm_mm_node *drm_mm_search_free_in_range_generic(const struct drm_
 			       flags & DRM_MM_SEARCH_BELOW) {
 		u64 hole_size = adj_end - adj_start;
 
+		DRM_DEBUG_DRIVER("hole_size=0x%llx, adj_start=0x%llx, adj_end=0x%llx\n",
+				 hole_size, adj_start, adj_end);
 		if (adj_start < start)
 			adj_start = start;
 		if (adj_end > end)