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mtd: nand: move NAND_CREATE_EMPTY_BBT flag

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The NAND_CREATE_EMPTY_BBT flag was added by commit:
  453281a973
  mtd: nand: introduce NAND_CREATE_EMPTY_BBT
This flag is not used within the kernel and not explained well, so I
took the liberty to edit its comments.

Also, this is a BBT-related flag (and closely tied with NAND_BBT_CREATE)
so I'm moving it to bbm.h next to NAND_BBT_CREATE, thus requiring that
we use the flag in nand_chip.bbt_options, *not* in nand_chip.options.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
This commit is contained in:
Brian Norris 2011-05-31 16:31:24 -07:00 committed by Artem Bityutskiy
parent bb9ebd4e71
commit b8f8068405
3 changed files with 8 additions and 3 deletions
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2
drivers/mtd/nand/nand_bbt.c
View file

@ -970,7 +970,7 @@ static int check_create(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_desc
continue;
/* Create the table in memory by scanning the chip(s) */
if (!(this->options & NAND_CREATE_EMPTY_BBT))
if (!(this->bbt_options & NAND_CREATE_EMPTY_BBT))
create_bbt(mtd, buf, bd, chipsel);
td->version[i] = 1;

7
include/linux/mtd/bbm.h
View file

@ -86,6 +86,13 @@ struct nand_bbt_descr {
#define NAND_BBT_VERSION 0x00000100
/* Create a bbt if none exists */
#define NAND_BBT_CREATE 0x00000200
/*
* Create an empty BBT with no vendor information. Vendor's information may be
* unavailable, for example, if the NAND controller has a different data and OOB
* layout or if this information is already purged. Must be used in conjunction
* with NAND_BBT_CREATE.
*/
#define NAND_CREATE_EMPTY_BBT 0x01000000
/* Search good / bad pattern through all pages of a block */
#define NAND_BBT_SCANALLPAGES 0x00000400
/* Scan block empty during good / bad block scan */

2
include/linux/mtd/nand.h
View file

@ -228,8 +228,6 @@ typedef enum {
#define NAND_OWN_BUFFERS 0x00040000
/* Chip may not exist, so silence any errors in scan */
#define NAND_SCAN_SILENT_NODEV 0x00080000
/* Create an empty BBT with no vendor information if the BBT is available */
#define NAND_CREATE_EMPTY_BBT 0x01000000
/* Options set by nand scan */
/* Nand scan has allocated controller struct */