mtd: nand: rename create_bbt()'s 'len' variable to 'numpages'

Rename 'len' variable of create_bbt/scan_block_fast/scan_block_full to
'numpages', since it really means number of pages to scan when
searching for the BBM (and not the byte length of the scan).

Signed-off-by: Shmulik Ladkani <shmulik.ladkani@gmail.com>
Reviewed-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c
index 9a5402e..24b0a4c 100644 (file)
--- a/drivers/mtd/nand/nand_bbt.c
+++ b/drivers/mtd/nand/nand_bbt.c
@@ -401,7 +401,7 @@ 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 len)
+                          int scanlen, int numpages)
 {
        int ret, j;
 
@@ -410,7 +410,7 @@ static int scan_block_full(struct mtd_info *mtd, struct nand_bbt_descr *bd,
        if (ret && !mtd_is_bitflip_or_eccerr(ret))
                return ret;
 
-       for (j = 0; j < len; j++, buf += scanlen) {
+       for (j = 0; j < numpages; j++, buf += scanlen) {
                if (check_pattern(buf, scanlen, mtd->writesize, bd))
                        return 1;
        }
@@ -419,7 +419,7 @@ static int scan_block_full(struct mtd_info *mtd, struct nand_bbt_descr *bd,
 
 /* 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 len)
+                          loff_t offs, uint8_t *buf, int numpages)
 {
        struct mtd_oob_ops ops;
        int j, ret;
@@ -430,7 +430,7 @@ static int scan_block_fast(struct mtd_info *mtd, struct nand_bbt_descr *bd,
        ops.datbuf = NULL;
        ops.mode = MTD_OPS_PLACE_OOB;
 
-       for (j = 0; j < len; j++) {
+       for (j = 0; j < numpages; j++) {
                /*
                 * Read the full oob until read_oob is fixed to handle single
                 * byte reads for 16 bit buswidth.
@@ -463,7 +463,7 @@ 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, len, scanlen;
+       int i, numblocks, numpages, scanlen;
        int startblock;
        loff_t from;
        size_t readlen;
@@ -471,11 +471,11 @@ static int create_bbt(struct mtd_info *mtd, uint8_t *buf,
        pr_info("Scanning device for bad blocks\n");
 
        if (bd->options & NAND_BBT_SCANALLPAGES)
-               len = 1 << (this->bbt_erase_shift - this->page_shift);
+               numpages = 1 << (this->bbt_erase_shift - this->page_shift);
        else if (bd->options & NAND_BBT_SCAN2NDPAGE)
-               len = 2;
+               numpages = 2;
        else
-               len = 1;
+               numpages = 1;
 
        if (!(bd->options & NAND_BBT_SCANEMPTY)) {
                /* We need only read few bytes from the OOB area */
@@ -484,7 +484,7 @@ static int create_bbt(struct mtd_info *mtd, uint8_t *buf,
        } else {
                /* Full page content should be read */
                scanlen = mtd->writesize + mtd->oobsize;
-               readlen = len * mtd->writesize;
+               readlen = numpages * mtd->writesize;
        }
 
        if (chip == -1) {
@@ -508,7 +508,7 @@ static int create_bbt(struct mtd_info *mtd, uint8_t *buf,
        }
 
        if (this->bbt_options & NAND_BBT_SCANLASTPAGE)
-               from += mtd->erasesize - (mtd->writesize * len);
+               from += mtd->erasesize - (mtd->writesize * numpages);
 
        for (i = startblock; i < numblocks;) {
                int ret;
@@ -517,9 +517,9 @@ static int create_bbt(struct mtd_info *mtd, uint8_t *buf,
 
                if (bd->options & NAND_BBT_SCANALLPAGES)
                        ret = scan_block_full(mtd, bd, from, buf, readlen,
-                                             scanlen, len);
+                                             scanlen, numpages);
                else
-                       ret = scan_block_fast(mtd, bd, from, buf, len);
+                       ret = scan_block_fast(mtd, bd, from, buf, numpages);
 
                if (ret < 0)
                        return ret;