diff options
author | Brian Norris <computersforpeace@gmail.com> | 2011-08-30 18:45:38 -0700 |
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committer | Artem Bityutskiy <artem.bityutskiy@intel.com> | 2011-09-11 15:13:38 +0300 |
commit | c46f6483d21e93400e4a110de7902830173d53b0 (patch) | |
tree | bac45575c58963f4bc35d13b188c8ff5a32c9823 /drivers/mtd/onenand/onenand_base.c | |
parent | e9195edc59f33e9cabdd32a2959e927806670f45 (diff) |
mtd: support reading OOB without ECC
This fixes issues with `nanddump -n' and the MEMREADOOB[64] ioctls on
hardware that performs error correction when reading only OOB data. A
driver for such hardware needs to know when we're doing a RAW vs. a
normal write, but mtd_do_read_oob does not pass such information to the
lower layers (e.g., NAND). We should pass MTD_OOB_RAW or MTD_OOB_PLACE
based on the MTD file mode.
For now, most drivers can get away with just setting:
chip->ecc.read_oob_raw = chip->ecc.read_oob
This is done by default; but for systems that behave as described above,
you must supply your own replacement function.
This was tested with nandsim as well as on actual SLC NAND.
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Cc: Jim Quinlan <jim2101024@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@intel.com>
Diffstat (limited to 'drivers/mtd/onenand/onenand_base.c')
0 files changed, 0 insertions, 0 deletions