drm/sis: track user->memblock mapping with idr

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/sis/sis_drv.c

@@ -48,6 +48,7 @@ static int sis_driver_load(struct drm_device *dev, unsigned long chipset)
 
 	dev->dev_private = (void *)dev_priv;
 	dev_priv->chipset = chipset;
+	idr_init(&dev->object_name_idr);
 	ret = drm_sman_init(&dev_priv->sman, 2, 12, 8);
 	if (ret)
 		kfree(dev_priv);
@@ -60,6 +61,9 @@ static int sis_driver_unload(struct drm_device *dev)
 	drm_sis_private_t *dev_priv = dev->dev_private;
 
 	drm_sman_takedown(&dev_priv->sman);
+	idr_remove_all(&dev_priv->object_idr);
+	idr_destroy(&dev_priv->object_idr);
+
 	kfree(dev_priv);
 
 	return 0;