[U-Boot] [PATCH 3/3] nand: arasan_nfc: Use the calculated ecc address for updating ecc register

[Siva Durga Prasad Paladugu]

From: Siva Durga Prasad Paladugu <siva.durga.paladugu at xilinx.com>

This patch corrects the ecc address calculation before updating
to ecc register. The ecc address has to be calculated based on
page, oob and ecc sizes of the device.

Signed-off-by: Siva Durga Prasad Paladugu <sivadur at xilinx.com>
Signed-off-by: Michal Simek <michal.simek at xilinx.com>
---
 drivers/mtd/nand/arasan_nfc.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/mtd/nand/arasan_nfc.c b/drivers/mtd/nand/arasan_nfc.c
index 70cb00e..3c9a021 100644
--- a/drivers/mtd/nand/arasan_nfc.c
+++ b/drivers/mtd/nand/arasan_nfc.c
@@ -1133,7 +1133,7 @@ static void arasan_check_ondie(struct mtd_info *mtd)
 static int arasan_nand_ecc_init(struct mtd_info *mtd)
 {
 	int found = -1;
-	u32 regval, eccpos_start, i;
+	u32 regval, eccpos_start, i, eccaddr;
 	struct nand_chip *nand_chip = mtd_to_nand(mtd);
 
 	for (i = 0; i < ARRAY_SIZE(ecc_matrix); i++) {
@@ -1152,7 +1152,10 @@ static int arasan_nand_ecc_init(struct mtd_info *mtd)
 	if (found < 0)
 		return 1;
 
-	regval = ecc_matrix[found].eccaddr |
+	eccaddr = mtd->writesize + mtd->oobsize -
+		  ecc_matrix[found].eccsize;
+
+	regval = eccaddr |
 		 (ecc_matrix[found].eccsize << ARASAN_NAND_ECC_SIZE_SHIFT) |
 		 (ecc_matrix[found].bch << ARASAN_NAND_ECC_BCH_SHIFT);
 	writel(regval, &arasan_nand_base->ecc_reg);
-- 
2.7.4