struct drm_atomic_state *state = NULL, *restore_state = NULL;
        struct drm_connector_state *connector_state;
        struct intel_crtc_state *crtc_state;
-       int ret, i = -1;
+       int ret;
 
        drm_dbg_kms(&dev_priv->drm, "[CONNECTOR:%d:%s], [ENCODER:%d:%s]\n",
                    connector->base.id, connector->name,
 
        /* Find an unused one (if possible) */
        for_each_crtc(dev, possible_crtc) {
-               i++;
-               if (!(encoder->possible_crtcs & (1 << i)))
+               if (!(encoder->possible_crtcs & drm_crtc_mask(possible_crtc)))
                        continue;
 
                ret = drm_modeset_lock(&possible_crtc->mutex, ctx);