diff --git a/io/dma.c b/io/dma.c
index cf8b42f..3b219d5 100644
--- a/io/dma.c
+++ b/io/dma.c
@@ -248,3 +248,14 @@ void gb_dma_update (GBDMA *dma, RIO *io, ut32 cycles, bool pre_exec) {
 		dma->seek &= (~GB_DMA_ACTIVE);
 	}
 }
+
+void gb_dma_close (GBDMA *dma, RIO *io) {
+	if (!dma || !io) {
+		return;
+	}
+	r_io_bank_use (io, dma->default_bank_id);
+	r_io_bank_del (io, dma->dma_bank_id);
+	r_io_fd_close (io, dma->dma_bus_fd);
+	r_io_fd_close (io, dma->dma_fd);
+	free (dma);
+}