[MTD] [NAND] Fix missing kernel-doc

[Reported by Randy Dunlap]

Signed-off-by: Alexey Korolev <akorolev@infradead.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
diff --git a/drivers/mtd/nand/nand_ecc.c b/drivers/mtd/nand/nand_ecc.c
index d99e569..fd19787 100644
--- a/drivers/mtd/nand/nand_ecc.c
+++ b/drivers/mtd/nand/nand_ecc.c
@@ -150,8 +150,8 @@
 /**
  * nand_calculate_ecc - [NAND Interface] Calculate 3-byte ECC for 256-byte block
  * @mtd:	MTD block structure (unused)
- * @dat:	raw data
- * @ecc_code:	buffer for ECC
+ * @buf:	input buffer with raw data
+ * @code:	output buffer with ECC
  */
 int nand_calculate_ecc(struct mtd_info *mtd, const unsigned char *buf,
 		       unsigned char *code)
@@ -390,7 +390,7 @@
 /**
  * nand_correct_data - [NAND Interface] Detect and correct bit error(s)
  * @mtd:	MTD block structure (unused)
- * @dat:	raw data read from the chip
+ * @buf:	raw data read from the chip
  * @read_ecc:	ECC from the chip
  * @calc_ecc:	the ECC calculated from raw data
  *