diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c
index 906b8cd94bc4b4b865e87f0dad59210d0703527b..7dc7889f84b4d6ac7c82f317ed17e52a741df76c 100644
--- a/drivers/mtd/nand/raw/nand_base.c
+++ b/drivers/mtd/nand/raw/nand_base.c
@@ -3279,7 +3279,10 @@ static int nand_do_read_ops(struct nand_chip *chip, loff_t from,
 				break;
 			}
 
-			/* Transfer not aligned data */
+			/*
+			 * Copy back the data in the initial buffer when reading
+			 * partial pages or when a bounce buffer is required.
+			 */
 			if (use_bufpoi) {
 				if (!NAND_HAS_SUBPAGE_READ(chip) && !oob &&
 				    !(mtd->ecc_stats.failed - ecc_failures) &&
@@ -4074,7 +4077,10 @@ static int nand_do_write_ops(struct nand_chip *chip, loff_t to,
 		else
 			use_bufpoi = 0;
 
-		/* Partial page write?, or need to use bounce buffer */
+		/*
+		 * Copy the data from the initial buffer when doing partial page
+		 * writes or when a bounce buffer is required.
+		 */
 		if (use_bufpoi) {
 			pr_debug("%s: using write bounce buffer for buf@%p\n",
 					 __func__, buf);