diff --git a/drivers/media/platform/rockchip/cif/capture.c b/drivers/media/platform/rockchip/cif/capture.c
index 86cecfb83957..d9f29f6a6dc7 100644
--- a/drivers/media/platform/rockchip/cif/capture.c
+++ b/drivers/media/platform/rockchip/cif/capture.c
@@ -6494,7 +6494,7 @@ static const struct v4l2_ioctl_ops rkcif_v4l2_ioctl_ops = {
 	.vidioc_default = rkcif_ioctl_default,
 };
 
-void rkcif_vb_done_oneframe(struct rkcif_stream *stream,
+static void rkcif_vb_done_oneframe(struct rkcif_stream *stream,
 				   struct vb2_v4l2_buffer *vb_done)
 {
 	const struct cif_output_fmt *fmt = stream->cif_fmt_out;