diff --git a/drivers/video/rockchip/vcodec/vcodec_service.c b/drivers/video/rockchip/vcodec/vcodec_service.c
index d4156bf16804..979dab150465 100644
--- a/drivers/video/rockchip/vcodec/vcodec_service.c
+++ b/drivers/video/rockchip/vcodec/vcodec_service.c
@@ -1045,12 +1045,6 @@ static int vcodec_bufid_to_iova(struct vpu_subdev_data *data,
 		if (usr_fd == 0)
 			continue;
 
-		/*
-		 * for avoiding cache sync issue, we need to map/unmap
-		 * input buffer every time. FIX ME, if it is unnecessary
-		 */
-		if (task->reg_rlc == tbl[i])
-			vcodec_iommu_free_fd(data->iommu_info, session, usr_fd);
 		/*
 		 * special offset scale case
 		 *