diff --git a/drivers/staging/media/rkvdec/rkvdec-h264.c b/drivers/staging/media/rkvdec/rkvdec-h264.c
index 7cc3b478a5f4940419b888d9e9c82bad22f9e1ea..5487f6d0bcb63542fb6b6decb0677bea852e4758 100644
--- a/drivers/staging/media/rkvdec/rkvdec-h264.c
+++ b/drivers/staging/media/rkvdec/rkvdec-h264.c
@@ -1015,8 +1015,9 @@ static int rkvdec_h264_adjust_fmt(struct rkvdec_ctx *ctx,
 	struct v4l2_pix_format_mplane *fmt = &f->fmt.pix_mp;
 
 	fmt->num_planes = 1;
-	fmt->plane_fmt[0].sizeimage = fmt->width * fmt->height *
-				      RKVDEC_H264_MAX_DEPTH_IN_BYTES;
+	if (!fmt->plane_fmt[0].sizeimage)
+		fmt->plane_fmt[0].sizeimage = fmt->width * fmt->height *
+					      RKVDEC_H264_MAX_DEPTH_IN_BYTES;
 	return 0;
 }