diff --git a/drivers/gpu/drm/i915/gem/i915_gem_mman.c b/drivers/gpu/drm/i915/gem/i915_gem_mman.c
index 7c2650cfb070f..b23368529a409 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_mman.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_mman.c
@@ -507,19 +507,6 @@ void i915_gem_object_release_mmap_offset(struct drm_i915_gem_object *obj)
 	spin_unlock(&obj->mmo.lock);
 }
 
-/**
- * i915_gem_object_release_mmap - remove physical page mappings
- * @obj: obj in question
- *
- * Preserve the reservation of the mmapping with the DRM core code, but
- * relinquish ownership of the pages back to the system.
- */
-void i915_gem_object_release_mmap(struct drm_i915_gem_object *obj)
-{
-	i915_gem_object_release_mmap_gtt(obj);
-	i915_gem_object_release_mmap_offset(obj);
-}
-
 static struct i915_mmap_offset *
 lookup_mmo(struct drm_i915_gem_object *obj,
 	   enum i915_mmap_type mmap_type)
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_mman.h b/drivers/gpu/drm/i915/gem/i915_gem_mman.h
index 7c5ccdf593594..efee9e0d25086 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_mman.h
+++ b/drivers/gpu/drm/i915/gem/i915_gem_mman.h
@@ -24,8 +24,6 @@ int i915_gem_dumb_mmap_offset(struct drm_file *file_priv,
 			      struct drm_device *dev,
 			      u32 handle, u64 *offset);
 
-void i915_gem_object_release_mmap(struct drm_i915_gem_object *obj);
-
 void __i915_gem_object_release_mmap_gtt(struct drm_i915_gem_object *obj);
 void i915_gem_object_release_mmap_gtt(struct drm_i915_gem_object *obj);
 
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object.c b/drivers/gpu/drm/i915/gem/i915_gem_object.c
index 6b69191c55436..eb35bdd10c096 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_object.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_object.c
@@ -171,14 +171,35 @@ static void __i915_gem_free_object_rcu(struct rcu_head *head)
 	atomic_dec(&i915->mm.free_count);
 }
 
+static void __i915_gem_object_free_mmaps(struct drm_i915_gem_object *obj)
+{
+	/* Skip serialisation and waking the device if known to be not used. */
+
+	if (obj->userfault_count)
+		i915_gem_object_release_mmap_gtt(obj);
+
+	if (!RB_EMPTY_ROOT(&obj->mmo.offsets)) {
+		struct i915_mmap_offset *mmo, *mn;
+
+		i915_gem_object_release_mmap_offset(obj);
+
+		rbtree_postorder_for_each_entry_safe(mmo, mn,
+						     &obj->mmo.offsets,
+						     offset) {
+			drm_vma_offset_remove(obj->base.dev->vma_offset_manager,
+					      &mmo->vma_node);
+			kfree(mmo);
+		}
+		obj->mmo.offsets = RB_ROOT;
+	}
+}
+
 static void __i915_gem_free_objects(struct drm_i915_private *i915,
 				    struct llist_node *freed)
 {
 	struct drm_i915_gem_object *obj, *on;
 
 	llist_for_each_entry_safe(obj, on, freed, freed) {
-		struct i915_mmap_offset *mmo, *mn;
-
 		trace_i915_gem_object_destroy(obj);
 
 		if (!list_empty(&obj->vma.list)) {
@@ -204,18 +225,8 @@ static void __i915_gem_free_objects(struct drm_i915_private *i915,
 			spin_unlock(&obj->vma.lock);
 		}
 
-		i915_gem_object_release_mmap(obj);
-
-		rbtree_postorder_for_each_entry_safe(mmo, mn,
-						     &obj->mmo.offsets,
-						     offset) {
-			drm_vma_offset_remove(obj->base.dev->vma_offset_manager,
-					      &mmo->vma_node);
-			kfree(mmo);
-		}
-		obj->mmo.offsets = RB_ROOT;
+		__i915_gem_object_free_mmaps(obj);
 
-		GEM_BUG_ON(obj->userfault_count);
 		GEM_BUG_ON(!list_empty(&obj->lut_list));
 
 		atomic_set(&obj->mm.pages_pin_count, 0);