1 files changed, 4 insertions, 0 deletions
diff --git a/dma-helpers.c b/dma-helpers.c
index 712ed897f..d4fc077c0 100644
--- a/dma-helpers.c
+++ b/dma-helpers.c
@@ -160,6 +160,10 @@ static BlockDriverAIOCB *dma_bdrv_io(
     dbs->is_write = is_write;
     dbs->bh = NULL;
     qemu_iovec_init(&dbs->iov, sg->nsg);
+    /*
+     * DMA flushing is handled in dma_bdrv_cb() calling dma_bdrv_unmap()
+     * so we don't need to do that here.
+     */
     dma_bdrv_cb(dbs, 0);
     if (!dbs->acb) {
         qemu_aio_release(dbs);