mtd: vf610_nfc: use in-band bad block table

Use in-band bad block table (NAND_BBT_NO_OOB) which allows to
use the full OOB for hardare ECC purposes. Since there is no
ECC correction on the OOB it is also safer to use in-band area
to store the bad block table marker.

Signed-off-by: Stefan Agner <stefan@agner.ch>

diff --git a/drivers/mtd/nand/vf610_nfc.c b/drivers/mtd/nand/vf610_nfc.c
index c6218a09c44a597e7f649a884ce23704f88281b2..e1105945b4c92693b477701c047b5553d296eb74 100644 (file)
--- a/drivers/mtd/nand/vf610_nfc.c
+++ b/drivers/mtd/nand/vf610_nfc.c
@@ -155,29 +155,6 @@ struct vf610_nfc {
 #define mtd_to_nfc(_mtd) \
        (struct vf610_nfc *)((struct nand_chip *)_mtd->priv)->priv
 
-static u8 bbt_pattern[] = {'B', 'b', 't', '0' };
-static u8 mirror_pattern[] = {'1', 't', 'b', 'B' };
-
-static struct nand_bbt_descr bbt_main_descr = {
-       .options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE | NAND_BBT_WRITE |
-                  NAND_BBT_2BIT | NAND_BBT_VERSION,
-       .offs = 11,
-       .len = 4,
-       .veroffs = 15,
-       .maxblocks = 4,
-       .pattern = bbt_pattern,
-};
-
-static struct nand_bbt_descr bbt_mirror_descr = {
-       .options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE | NAND_BBT_WRITE |
-                  NAND_BBT_2BIT | NAND_BBT_VERSION,
-       .offs = 11,
-       .len = 4,
-       .veroffs = 15,
-       .maxblocks = 4,
-       .pattern = mirror_pattern,
-};
-
 static struct nand_ecclayout vf610_nfc_ecc45 = {
        .eccbytes = 45,
        .eccpos = {19, 20, 21, 22, 23,
@@ -624,10 +601,8 @@ static int vf610_nfc_nand_init(int devnum, void __iomem *addr)
 
        /* Bad block options. */
        if (cfg.flash_bbt)
-               chip->bbt_options = NAND_BBT_USE_FLASH | NAND_BBT_CREATE;
-
-       chip->bbt_td = &bbt_main_descr;
-       chip->bbt_md = &bbt_mirror_descr;
+               chip->bbt_options = NAND_BBT_USE_FLASH | NAND_BBT_NO_OOB |
+                                   NAND_BBT_CREATE;
 
        /* Set configuration register. */
        vf610_nfc_clear(mtd, NFC_FLASH_CONFIG, CONFIG_ADDR_AUTO_INCR_BIT);