+ intel_fb_obj_invalidate(ifbdev->fb->obj, ORIGIN_GTT);
+ mutex_unlock(&fb_helper->dev->struct_mutex);
+ }
+
+ return ret;
+}
+
+static int intel_fbdev_pan_display(struct fb_var_screeninfo *var,
+ struct fb_info *info)
+{
+ struct drm_fb_helper *fb_helper = info->par;
+ struct intel_fbdev *ifbdev =
+ container_of(fb_helper, struct intel_fbdev, helper);
+
+ int ret;
+ ret = drm_fb_helper_pan_display(var, info);
+
+ if (ret == 0) {
+ mutex_lock(&fb_helper->dev->struct_mutex);
+ intel_fb_obj_invalidate(ifbdev->fb->obj, ORIGIN_GTT);