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authorBrian Norris <computersforpeace@gmail.com>2011-06-01 03:31:20 +0400
committerArtem Bityutskiy <artem.bityutskiy@intel.com>2011-09-11 16:01:46 +0400
commita0dc552951dcbb2b28a8a2ffb5fa966613e8c025 (patch)
tree62c71971d00f60fedcb5b265614c8925493877ad /include/linux/mtd
parent1c3bd14bb0e10ce69761662d575d454f12070838 (diff)
downloadlinux-a0dc552951dcbb2b28a8a2ffb5fa966613e8c025.tar.xz
mtd: nand: remove NAND_BBT_SCANBYTE1AND6 option
This patch reverts most of: commit 58373ff0afff4cc8ac40608872995f4d87eb72ec mtd: nand: more BB Detection refactoring and dynamic scan options According to the discussion at: http://lists.infradead.org/pipermail/linux-mtd/2011-May/035696.html the NAND_BBT_SCANBYTE1AND6 flag, although technically valid, can break some existing ECC layouts that use the 6th byte in the OOB for ECC data. Furthermore, we apparently do not need to scan both bytes 1 and 6 in the OOB region of the devices under consideration; instead, we only need to scan one or the other. Thus, the NAND_BBT_SCANBYTE1AND6 flag is at best unnecessary and at worst a regression. Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Diffstat (limited to 'include/linux/mtd')
-rw-r--r--include/linux/mtd/bbm.h2
1 files changed, 0 insertions, 2 deletions
diff --git a/include/linux/mtd/bbm.h b/include/linux/mtd/bbm.h
index 57cc0e63714f..08ffa2193c07 100644
--- a/include/linux/mtd/bbm.h
+++ b/include/linux/mtd/bbm.h
@@ -98,8 +98,6 @@ struct nand_bbt_descr {
#define NAND_BBT_SCAN2NDPAGE 0x00004000
/* Search good / bad pattern on the last page of the eraseblock */
#define NAND_BBT_SCANLASTPAGE 0x00008000
-/* Chip stores bad block marker on BOTH 1st and 6th bytes of OOB */
-#define NAND_BBT_SCANBYTE1AND6 0x00100000
/* The nand_bbt_descr was created dynamicaly and must be freed */
#define NAND_BBT_DYNAMICSTRUCT 0x00200000
/* The bad block table does not OOB for marker */