[PATCH 0/4] mtd: rawnand: restore SmartMedia setup in r852

[James Hilliard]

r852 installs its own NAND controller, but the shared SmartMedia setup is
still attached to the unused legacy dummy controller. Run that setup from
r852's attach_chip callback so the media-specific OOB layout, bad-block
handling and page-size checks take effect. Restore the hardware-ECC
default during probe so the PCI path selects a valid engine without a
NAND device-tree node.

Before restoring the shared setup, correct the first ECC region's offset,
remove recursive NAND locking from the bad-block marking path, and select
the standard OOB writer for r852's contiguous spare area. These keep ECC
bytes away from the metadata and bad-block writes within the spare area.

Assisted-by: Codex:gpt-6-astra
Signed-off-by: James Hilliard <james.hilliard1 at gmail.com>

---
James Hilliard (4):
      mtd: rawnand: sm_common: restore the first ECC region offset
      mtd: rawnand: sm_common: avoid recursive locking when marking bad blocks
      mtd: rawnand: r852: use the standard OOB write operation
      mtd: rawnand: r852: restore SmartMedia and ECC initialization

 drivers/mtd/nand/raw/r852.c      |  9 +++++++
 drivers/mtd/nand/raw/sm_common.c | 55 ++++++++++++++++++++++------------------
 drivers/mtd/nand/raw/sm_common.h |  3 +++
 3 files changed, 42 insertions(+), 25 deletions(-)
---
base-commit: 30daaf3e7897b4a8d9b72e5b0c86dd6e2a4d7d85
change-id: 20261108-submit-r852-smartmedia-attach-v1-290991aae0aa

Best regards,
--  
James Hilliard <james.hilliard1 at gmail.com>