diff --git a/drivers/mtd/nand/omap2.c b/drivers/mtd/nand/omap2.c
index c719b86..a313e83 100644
--- a/drivers/mtd/nand/omap2.c
+++ b/drivers/mtd/nand/omap2.c
@@ -441,7 +441,7 @@ out_copy:
  */
 static void omap_read_buf_dma_pref(struct mtd_info *mtd, u_char *buf, int len)
 {
-	if (len <= mtd->oobsize)
+	if (len <= mtd->oobsize || !IS_ALIGNED((unsigned long)buf, 4))
 		omap_read_buf_pref(mtd, buf, len);
 	else
 		/* start transfer in DMA mode */
@@ -457,7 +457,7 @@ static void omap_read_buf_dma_pref(struct mtd_info *mtd, u_char *buf, int len)
 static void omap_write_buf_dma_pref(struct mtd_info *mtd,
 					const u_char *buf, int len)
 {
-	if (len <= mtd->oobsize)
+	if (len <= mtd->oobsize || !IS_ALIGNED((unsigned long)buf, 4))
 		omap_write_buf_pref(mtd, buf, len);
 	else
 		/* start transfer in DMA mode */