From: Bean Huo <bean...@micron.com>

Signed-off-by: BeanHuo <bean...@micron.com>
---
 drivers/mtd/ubi/Kconfig  | 15 +++++++++++++++
 drivers/mtd/ubi/Makefile |  2 +-
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/drivers/mtd/ubi/Kconfig b/drivers/mtd/ubi/Kconfig
index f0855ce..d9f01fa 100644
--- a/drivers/mtd/ubi/Kconfig
+++ b/drivers/mtd/ubi/Kconfig
@@ -77,6 +77,21 @@ config MTD_UBI_FASTMAP
 
           If in doubt, say "N".
 
+config MTD_UBI_MLC_NAND_BAKVOL
+       bool "UBI solution for NAND pair page (Experimental feature)"
+       default n
+       help
+          This used for MLC NAND paired page power-cut protection.
+
+          MLC NAND paired page power loss is a known issue so far.
+          Namely, MLC NAND pages are coupled in a sense that if you cut
+          power while writing to a page, you corrupt not only this page,
+          but also one of the previous pages which is paired with the current
+          one. More detail information,please refer to follwoing link:
+          http://www.linux-mtd.infradead.org/doc/ubifs.html
+
+          If in doubt, say "N".
+
 config MTD_UBI_GLUEBI
        tristate "MTD devices emulation driver (gluebi)"
        help
diff --git a/drivers/mtd/ubi/Makefile b/drivers/mtd/ubi/Makefile
index 4e3c3d7..6bd78aa 100644
--- a/drivers/mtd/ubi/Makefile
+++ b/drivers/mtd/ubi/Makefile
@@ -1,6 +1,6 @@
 obj-$(CONFIG_MTD_UBI) += ubi.o
 
-ubi-y += vtbl.o vmt.o upd.o build.o cdev.o kapi.o eba.o io.o wl.o attach.o
+ubi-y += vtbl.o vmt.o upd.o build.o cdev.o kapi.o eba.o io.o wl.o attach.o 
bakvol.o
 ubi-y += misc.o debug.o
 ubi-$(CONFIG_MTD_UBI_FASTMAP) += fastmap.o
 ubi-$(CONFIG_MTD_UBI_BLOCK) += block.o
-- 
1.9.1

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