[PATCH v2 0/3] Fix proposal for the Micron shallow erase issue

[Miquel Raynal <miquel.raynal@xxxxxxxxxxx>]

Hello,

After a first proposal by Thomas Gleixner and then another proposal by
Bean Huo (Micron), this is an attempt to mainline the fix for Micron's
"shallow erase" issue. IMHO this is a "pretty way", not so invasive,
with a limited performance penalty.

It has only be *compile-tested* and this is just to know if the
approach is fine or not, then I will optimize, maybe rewrite a bit and
forcibly (ask to) test it.

Changes in v2 (v1 was an RFC):
* Fixed the written pattern: should have been 0x00 instead of 0xFF.
* Removed files that I added in my commit by mistake.
* Reworded a little bit the comment about writing only odd pages.
* I am still waiting for Bean to comment of the need to write main
  area vs OOB and also the need to write pages starting from 0 or
  starting from the middle of the bloc. Anyway if I do not get more
  information, and people agree (or even test it), I will merge this
  set.

Miquel Raynal (3):
  mtd: rawnand: Add the nand_chip->erase hook
  mtd: rawnand: Add the nand_chip->write_oob hook
  mtd: rawnand: micron: Address the shallow erase issue

 drivers/mtd/nand/raw/internals.h   |   2 +
 drivers/mtd/nand/raw/nand_base.c   |  14 +++-
 drivers/mtd/nand/raw/nand_micron.c | 121 +++++++++++++++++++++++++++++
 include/linux/mtd/rawnand.h        |   6 ++
 4 files changed, 142 insertions(+), 1 deletion(-)

-- 
2.20.1


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