[PATCH v5 0/2] mtd: nand: fix writing incorrect ECC parity data in OOB region

[RogerCC Lin]

From: RogerCC Lin <rogercc.lin at mediatek.com>

This series fix chances to write incorrect ECC data which may cause uncorrectable ECC error when reading.

change since v4:
- use (i / 4) instead of (i >> 2) to make code more clear.

changes since v3:
- use macro for function arguments.

changes since v2:
- use macro for shift operation.

changes since v1:
- separate patches into 2.
- use shift operator with byte access to avoid endianness conversion problems.
- follow linux coding style.

The patch passed the test of UBIFS file-system read/write on Mediatek's RFB. The tested driver is checked-out from LEDE OpenWRT project's upstream driver, which is pretty much same as nand/next branch upstream driver(git clone https://git.lede-project.org/source.git).


RogerCC Lin (2):
  mtd: nand: fix generating over-boundary ECC data when writing
  mtd: nand: fix chances to create incomplete ECC data when writing

 drivers/mtd/nand/mtk_ecc.c  |   12 ++++++++----
 drivers/mtd/nand/mtk_nand.c |    7 +++++--
 2 files changed, 13 insertions(+), 6 deletions(-)