byzantium: Revert "drm: etnaviv: Unmap gems on gem_close"

This will be fixed in mesa (patch there forthcoming)

This reverts commit 695c9204.

drivers/gpu/drm/etnaviv/etnaviv_gem.c

@@ -512,38 +512,6 @@ static const struct etnaviv_gem_ops etnaviv_gem_shmem_ops = {
 	.mmap = etnaviv_gem_mmap_obj,
 };
 
-void etnaviv_gem_close_object(struct drm_gem_object *obj, struct drm_file *unused)
-{
-	struct etnaviv_gem_object *etnaviv_obj = to_etnaviv_bo(obj);
-	struct etnaviv_vram_mapping *mapping, *tmp;
-
-	/* Handle this via etnaviv_gem_free_object */
-	if (obj->handle_count == 1)
-		return;
-
-	WARN_ON(is_active(etnaviv_obj));
-
-	/*
-	 * userspace wants to release the handle so we need to remove
-	 * the mapping from the gpu's virtual address space to stay
-	 * in sync.
-	 */
-	list_for_each_entry_safe(mapping, tmp, &etnaviv_obj->vram_list,
-				 obj_node) {
-		struct etnaviv_iommu_context *context = mapping->context;
-
-		WARN_ON(mapping->use);
-
-		if (context) {
-			etnaviv_iommu_unmap_gem(context, mapping);
-			etnaviv_iommu_context_put(context);
-		}
-
-		list_del(&mapping->obj_node);
-		kfree(mapping);
-	}
-}
-
 void etnaviv_gem_free_object(struct drm_gem_object *obj)
 {
 	struct etnaviv_gem_object *etnaviv_obj = to_etnaviv_bo(obj);
@@ -602,7 +570,6 @@ static const struct drm_gem_object_funcs etnaviv_gem_object_funcs = {
 	.get_sg_table = etnaviv_gem_prime_get_sg_table,
 	.vmap = etnaviv_gem_prime_vmap,
 	.vm_ops = &vm_ops,
-	.close = etnaviv_gem_close_object,
 };
 
 static int etnaviv_gem_new_impl(struct drm_device *dev, u32 size, u32 flags,