[PATCH RESEND v2 0/4] mtd: spinand: fix continuous reading mode support

From: Mikhail Kshevetskiy
Date: Thu Aug 14 2025 - 02:55:42 EST


Continuous reading mode is broken for some spi controllers. This may lead
to errors during reading of more than one flash page at once. This patch
series improve continuous mode support and add a fallback to regular
reading method if continuous reading is not supported by spi controller.

Changes v2:
* added helper to create reading dirmap descriptor
* fix spelling
* error code is not used for regular reading fallback anymore
* it's possible (but very unlucky) that someone will do raw reading
of the flash in continuous mode (i.e. without OOB), so fix dirmap
creation for that case as well.

Mikhail Kshevetskiy (4):
mtd: spinand: fix direct mapping creation sizes.
mtd: spinand: try a regular dirmap if creating a dirmap for continuous
reading fails
mtd: spinand: repeat reading in regular mode if continuous reading
fails
spi: spi-airoha-snfi: return an error for continuous mode dirmap
creation cases

drivers/mtd/nand/spi/core.c | 88 +++++++++++++++++++++++++++--------
drivers/spi/spi-airoha-snfi.c | 4 ++
2 files changed, 72 insertions(+), 20 deletions(-)

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2.50.1