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When writes begin at odd addresses, a single byte is programmed first using byte program command, which clears the Write Enable Latch. The driver fails to re-enable writes before the AAI sequence. 2. When the SPI controller lacks direct mapping support, the fallback path uses a probe-time operation template with standard page program opcodes instead of AAI opcodes. Changes in v4: - Resent as new thread (v3 was incorrectly sent as reply to v2) - Patch 2/2: Added Fixes tag Changes in v3: - Patch 1/2: Use local boolean 'needs_write_enable' for clarity as suggested by Michael Walle - Patch 1/2: Improved comment explaining the fix - Patch 1/2: Added Fixes tag Changes in v2: - Split fixes into separate patches - Added detailed commit messages Sanjaikumar V S (2): mtd: spi-nor: sst: Fix write enable before AAI sequence mtd: spi-nor: core: Fix AAI mode when dirmap is not available drivers/mtd/spi-nor/core.c | 2 +- drivers/mtd/spi-nor/sst.c | 13 +++++++++++++ 2 files changed, 14 insertions(+), 1 deletion(-) -- 2.43.0