diff --git a/drivers/memstick/host/r592.c b/drivers/memstick/host/r592.c
index ef09ba0289d7..d5cfb503b9d6 100644
--- a/drivers/memstick/host/r592.c
+++ b/drivers/memstick/host/r592.c
@@ -298,8 +298,7 @@ static int r592_transfer_fifo_dma(struct r592_device *dev)
 	sg_count = dma_map_sg(&dev->pci_dev->dev, &dev->req->sg, 1, is_write ?
 		PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE);
 
-	if (sg_count != 1 ||
-			(sg_dma_len(&dev->req->sg) < dev->req->sg.length)) {
+	if (sg_count != 1 || sg_dma_len(&dev->req->sg) < R592_LFIFO_SIZE) {
 		message("problem in dma_map_sg");
 		return -EIO;
 	}