mtd: nand_bbt: kill NAND_BBT_SCANALLPAGES

Now that the last user of NAND_BBT_SCANALLPAGES has been removed, let's
kill this peculiar BBT feature flag.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Reviewed-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>

1 files changed, 3 insertions, 34 deletions

diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c
index c75b6a7c6ea4..c0615d1526f9 100644
--- a/drivers/mtd/nand/nand_bbt.c
+++ b/drivers/mtd/nand/nand_bbt.c
@@ -412,25 +412,6 @@ static void read_abs_bbts(struct mtd_info *mtd, uint8_t *buf,
         }
 }
 
-/* Scan a given block full */
-static int scan_block_full(struct mtd_info *mtd, struct nand_bbt_descr *bd,
-                           loff_t offs, uint8_t *buf, size_t readlen,
-                           int scanlen, int numpages)
-{
-        int ret, j;
-
-        ret = scan_read_oob(mtd, buf, offs, readlen);
-        /* Ignore ECC errors when checking for BBM */
-        if (ret && !mtd_is_bitflip_or_eccerr(ret))
-                return ret;
-
-        for (j = 0; j < numpages; j++, buf += scanlen) {
-                if (check_pattern(buf, scanlen, mtd->writesize, bd))
-                        return 1;
-        }
-        return 0;
-}
-
 /* Scan a given block partially */
 static int scan_block_fast(struct mtd_info *mtd, struct nand_bbt_descr *bd,
                            loff_t offs, uint8_t *buf, int numpages)
@@ -477,24 +458,17 @@ static int create_bbt(struct mtd_info *mtd, uint8_t *buf,
         struct nand_bbt_descr *bd, int chip)
 {
         struct nand_chip *this = mtd->priv;
-        int i, numblocks, numpages, scanlen;
+        int i, numblocks, numpages;
         int startblock;
         loff_t from;
-        size_t readlen;
 
         pr_info("Scanning device for bad blocks\n");
 
-        if (bd->options & NAND_BBT_SCANALLPAGES)
-                numpages = 1 << (this->bbt_erase_shift - this->page_shift);
-        else if (bd->options & NAND_BBT_SCAN2NDPAGE)
+        if (bd->options & NAND_BBT_SCAN2NDPAGE)
                 numpages = 2;
         else
                 numpages = 1;
 
-        /* We need only read few bytes from the OOB area */
-        scanlen = 0;
-        readlen = bd->len;
-
         if (chip == -1) {
                 numblocks = mtd->size >> this->bbt_erase_shift;
                 startblock = 0;
@@ -519,12 +493,7 @@ static int create_bbt(struct mtd_info *mtd, uint8_t *buf,
 
                 BUG_ON(bd->options & NAND_BBT_NO_OOB);
 
-                if (bd->options & NAND_BBT_SCANALLPAGES)
-                        ret = scan_block_full(mtd, bd, from, buf, readlen,
-                                              scanlen, numpages);
-                else
-                        ret = scan_block_fast(mtd, bd, from, buf, numpages);
-
+                ret = scan_block_fast(mtd, bd, from, buf, numpages);
                 if (ret < 0)
                         return ret;