diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c
index a85c7cc8328e..e20b340855e7 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c
@@ -388,7 +388,7 @@ static void mtk_vdec_worker(struct work_struct *work)
 	}
 	buf.va = vb2_plane_vaddr(&src_buf->vb2_buf, 0);
 	buf.dma_addr = vb2_dma_contig_plane_dma_addr(&src_buf->vb2_buf, 0);
-	buf.size = (size_t)src_buf->planes[0].bytesused;
+	buf.size = (size_t)src_buf->vb2_buf.planes[0].bytesused;
 	if (!buf.va) {
 		v4l2_m2m_job_finish(dev->m2m_dev_dec, ctx->m2m_ctx);
 		mtk_v4l2_err("[%d] id=%d src_addr is NULL!!",
@@ -1155,7 +1155,7 @@ static void vb2ops_vdec_buf_queue(struct vb2_buffer *vb)
 
 	src_mem.va = vb2_plane_vaddr(&src_buf->vb2_buf, 0);
 	src_mem.dma_addr = vb2_dma_contig_plane_dma_addr(&src_buf->vb2_buf, 0);
-	src_mem.size = (size_t)src_buf->planes[0].bytesused;
+	src_mem.size = (size_t)src_buf->vb2_buf.planes[0].bytesused;
 	mtk_v4l2_debug(2,
 			"[%d] buf id=%d va=%p dma=%pad size=%zx",
 			ctx->id, src_buf->vb2_buf.index,
diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc.c
index c6b48b5925fb..50351adafc47 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc.c
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc.c
@@ -894,7 +894,7 @@ static void vb2ops_venc_stop_streaming(struct vb2_queue *q)
 
 	if (q->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
 		while ((dst_buf = v4l2_m2m_dst_buf_remove(ctx->m2m_ctx))) {
-			dst_buf->planes[0].bytesused = 0;
+			dst_buf->vb2_buf.planes[0].bytesused = 0;
 			v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_ERROR);
 		}
 	} else {
@@ -947,7 +947,7 @@ static int mtk_venc_encode_header(void *priv)
 
 	bs_buf.va = vb2_plane_vaddr(&dst_buf->vb2_buf, 0);
 	bs_buf.dma_addr = vb2_dma_contig_plane_dma_addr(&dst_buf->vb2_buf, 0);
-	bs_buf.size = (size_t)dst_buf->planes[0].length;
+	bs_buf.size = (size_t)dst_buf->vb2_buf.planes[0].length;
 
 	mtk_v4l2_debug(1,
 			"[%d] buf id=%d va=0x%p dma_addr=0x%llx size=%zu",
@@ -976,7 +976,7 @@ static int mtk_venc_encode_header(void *priv)
 	}
 
 	ctx->state = MTK_STATE_HEADER;
-	dst_buf->planes[0].bytesused = enc_result.bs_size;
+	dst_buf->vb2_buf.planes[0].bytesused = enc_result.bs_size;
 	v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_DONE);
 
 	return 0;
@@ -1107,12 +1107,12 @@ static void mtk_venc_worker(struct work_struct *work)
 
 	if (ret) {
 		v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_ERROR);
-		dst_buf->planes[0].bytesused = 0;
+		dst_buf->vb2_buf.planes[0].bytesused = 0;
 		v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_ERROR);
 		mtk_v4l2_err("venc_if_encode failed=%d", ret);
 	} else {
 		v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_DONE);
-		dst_buf->planes[0].bytesused = enc_result.bs_size;
+		dst_buf->vb2_buf.planes[0].bytesused = enc_result.bs_size;
 		v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_DONE);
 		mtk_v4l2_debug(2, "venc_if_encode bs size=%d",
 				 enc_result.bs_size);