[PATCH v4 0/3] mtd: cfi_cmdset_0002: Use chip_ready() for write on S29GL064N

[Tokunori Ikegami]

As pointed out by this bug report [1], buffered writes are now broken on
S29GL064N. This issue comes from a rework which switched from using chip_good()
to chip_ready(), because DQ true data 0xFF is read on S29GL064N and an error
returned by chip_good(). One way to solve the issue is to revert the change
partially to use chip_ready for S29GL064N.

[1] https://lore.kernel.org/r/b687c259-6413-26c9-d4c9-b3afa69ea124@pengutronix.de/

Fixes: dfeae1073583("mtd: cfi_cmdset_0002: Change write buffer to check correct value")
Signed-off-by: Tokunori Ikegami <ikegami.t at gmail.com>
Tested-by: Ahmad Fatoum <a.fatoum at pengutronix.de>
Cc: stable at vger.kernel.org

Tokunori Ikegami (3):
  mtd: cfi_cmdset_0002: Move and rename
    chip_check/chip_ready/chip_good_for_write
  mtd: cfi_cmdset_0002: Use chip_ready() for write on S29GL064N
  mtd: cfi_cmdset_0002: Add S29GL064N ID definition

 drivers/mtd/chips/cfi_cmdset_0002.c | 93 +++++++++++++++--------------
 1 file changed, 49 insertions(+), 44 deletions(-)

-- 
2.32.0