From: Brian Norris <norris@broadcom.com>
Date: Wed, 23 Jun 2010 20:36:02 +0000 (-0700)
Subject: mtd: nand: edit macro flag for BBT scan of last page in block
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=30fe8115b55223cb84530ce04c4a20ba9d6dcf0b;p=GitHub%2Fmt8127%2Fandroid_kernel_alcatel_ttab.git

mtd: nand: edit macro flag for BBT scan of last page in block

NAND_BB_LAST_PAGE used to be in nand.h, but it pertained to bad block
management and so belongs next to NAND_BBT_SCAN2NDPAGE in bbm.h. Also,
its previous flag value (0x00000400) conflicted with NAND_BBT_SCANALLPAGES
so I changed its value to 0x00008000. All uses of the name were modified to
provide consistency with other "NAND_BBT_*" flags.

Signed-off-by: Brian Norris <norris@broadcom.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
---

diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index 4a7b86423ee9..e6cf9aefef13 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -347,7 +347,7 @@ static int nand_block_bad(struct mtd_info *mtd, loff_t ofs, int getchip)
 	struct nand_chip *chip = mtd->priv;
 	u16 bad;
 
-	if (chip->options & NAND_BB_LAST_PAGE)
+	if (chip->options & NAND_BBT_SCANLASTPAGE)
 		ofs += mtd->erasesize - mtd->writesize;
 
 	page = (int)(ofs >> chip->page_shift) & chip->pagemask;
@@ -399,7 +399,7 @@ static int nand_default_block_markbad(struct mtd_info *mtd, loff_t ofs)
 	uint8_t buf[2] = { 0, 0 };
 	int block, ret;
 
-	if (chip->options & NAND_BB_LAST_PAGE)
+	if (chip->options & NAND_BBT_SCANLASTPAGE)
 		ofs += mtd->erasesize - mtd->writesize;
 
 	/* Get block number */
@@ -2946,7 +2946,7 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd,
 	if ((chip->cellinfo & NAND_CI_CELLTYPE_MSK) &&
 			(*maf_id == NAND_MFR_SAMSUNG ||
 			 *maf_id == NAND_MFR_HYNIX))
-		chip->options |= NAND_BB_LAST_PAGE;
+		chip->options |= NAND_BBT_SCANLASTPAGE;
 
 	/* Check for AND chips with 4 page planes */
 	if (chip->options & NAND_4PAGE_ARRAY)
diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c
index ad97c0ce73b2..71d83be24ff6 100644
--- a/drivers/mtd/nand/nand_bbt.c
+++ b/drivers/mtd/nand/nand_bbt.c
@@ -432,7 +432,7 @@ static int create_bbt(struct mtd_info *mtd, uint8_t *buf,
 		from = (loff_t)startblock << (this->bbt_erase_shift - 1);
 	}
 
-	if (this->options & NAND_BB_LAST_PAGE)
+	if (this->options & NAND_BBT_SCANLASTPAGE)
 		from += mtd->erasesize - (mtd->writesize * len);
 
 	for (i = startblock; i < numblocks;) {
diff --git a/include/linux/mtd/bbm.h b/include/linux/mtd/bbm.h
index 9c3757c5759d..8ad0b8629c3f 100644
--- a/include/linux/mtd/bbm.h
+++ b/include/linux/mtd/bbm.h
@@ -82,6 +82,8 @@ struct nand_bbt_descr {
 #define NAND_BBT_SAVECONTENT	0x00002000
 /* Search good / bad pattern on the first and the second page */
 #define NAND_BBT_SCAN2NDPAGE	0x00004000
+/* Search good / bad pattern on the last page of the eraseblock */
+#define NAND_BBT_SCANLASTPAGE	0x00008000
 
 /* The maximum number of blocks to scan for a bbt */
 #define NAND_BBT_SCAN_MAXBLOCKS	4
diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
index a81b185e23a7..50f3aa00a452 100644
--- a/include/linux/mtd/nand.h
+++ b/include/linux/mtd/nand.h
@@ -181,8 +181,6 @@ typedef enum {
 #define NAND_NO_READRDY		0x00000100
 /* Chip does not allow subpage writes */
 #define NAND_NO_SUBPAGE_WRITE	0x00000200
-/* Chip stores bad block marker on the last page of the eraseblock */
-#define NAND_BB_LAST_PAGE	0x00000400
 
 /* Device is one of 'new' xD cards that expose fake nand command set */
 #define NAND_BROKEN_XD		0x00000400