@@ -994,7 +994,8 @@ 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) */
- create_bbt(mtd, buf, bd, chipsel);
+ if (!(this->options & NAND_CREATE_EMPTY_BBT))
+ create_bbt(mtd, buf, bd, chipsel);
td->version[i] = 1;
if (md)
@@ -84,7 +84,7 @@ struct nand_bbt_descr {
#define NAND_BBT_PERCHIP 0x00000080
/* bbt has a version counter at offset veroffs */
#define NAND_BBT_VERSION 0x00000100
-/* Create a bbt if none axists */
+/* Create a bbt if none exists */
#define NAND_BBT_CREATE 0x00000200
/* Search good / bad pattern through all pages of a block */
#define NAND_BBT_SCANALLPAGES 0x00000400
@@ -218,6 +218,8 @@ typedef enum {
/* If passed additionally to NAND_USE_FLASH_BBT then BBT code will not touch
* the OOB area */
#define NAND_USE_FLASH_BBT_NO_OOB 0x00100000
+/* Create an empty BBT with no vendor information if the BBT is available */
+#define NAND_CREATE_EMPTY_BBT 0x00200000
/* Options set by nand scan */
/* Nand scan has allocated controller struct */
it will create an empty BBT table without considering vendor's BBT information. Vendor's information may be unavailable if the NAND controller has a different DATA & OOB layout or if this information is allready purged. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> --- drivers/mtd/nand/nand_bbt.c | 3 ++- include/linux/mtd/bbm.h | 2 +- include/linux/mtd/nand.h | 2 ++ 3 files changed, 5 insertions(+), 2 deletions(-)