diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index 9599dd1..f588def 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -878,7 +878,7 @@
 	struct mmc_data *data = req->data;
 
 	/* Sanity check: all the SG entries must be aligned by block size. */
-	for (i = 0; i < host->dma_len; i++) {
+	for (i = 0; i < data->sg_len; i++) {
 		struct scatterlist *sgl;
 
 		sgl = data->sg + i;
@@ -1021,10 +1021,20 @@
 static void omap_mmc_request(struct mmc_host *mmc, struct mmc_request *req)
 {
 	struct mmc_omap_host *host = mmc_priv(mmc);
+	int err;
 
 	WARN_ON(host->mrq != NULL);
 	host->mrq = req;
-	mmc_omap_prepare_data(host, req);
+	err = mmc_omap_prepare_data(host, req);
+	if (err) {
+		req->cmd->error = err;
+		if (req->data)
+			req->data->error = err;
+		host->mrq = NULL;
+		mmc_request_done(mmc, req);
+		return;
+	}
+
 	mmc_omap_start_command(host, req->cmd, req->data);
 }