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From: Tokunori Ikegami <ikegami.t@gmail.com>
To: miquel.raynal@bootlin.com
Cc: linux-mtd@lists.infradead.org,
	Tokunori Ikegami <ikegami.t@gmail.com>,
	Ahmad Fatoum <a.fatoum@pengutronix.de>,
	stable@vger.kernel.org
Subject: [PATCH v4 0/3] mtd: cfi_cmdset_0002: Use chip_ready() for write on S29GL064N
Date: Thu, 17 Mar 2022 00:54:52 +0900	[thread overview]
Message-ID: <20220316155455.162362-1-ikegami.t@gmail.com> (raw)

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@gmail.com>
Tested-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Cc: stable@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


             reply	other threads:[~2022-03-16 15:55 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-03-16 15:54 Tokunori Ikegami [this message]
2022-03-16 15:54 ` [PATCH v4 1/3] mtd: cfi_cmdset_0002: Move and rename chip_check/chip_ready/chip_good_for_write Tokunori Ikegami
2022-03-16 17:15   ` Miquel Raynal
2022-03-22  2:35     ` Tokunori Ikegami
2022-03-16 15:54 ` [PATCH v4 2/3] mtd: cfi_cmdset_0002: Use chip_ready() for write on S29GL064N Tokunori Ikegami
2022-03-16 17:21   ` Miquel Raynal
2022-03-17 10:01     ` Vignesh Raghavendra
2022-03-17 14:16       ` Ahmad Fatoum
2022-03-22  2:49         ` Tokunori Ikegami
2022-03-28 10:49           ` Ahmad Fatoum
2022-03-28 15:27             ` Tokunori Ikegami
2022-03-22  2:42       ` Tokunori Ikegami
2022-03-22  2:39     ` Tokunori Ikegami
2022-03-21 11:48   ` Thorsten Leemhuis
2022-03-21 12:35     ` Miquel Raynal
2022-03-21 12:51       ` Thorsten Leemhuis
2022-03-21 13:41         ` Miquel Raynal
2022-03-21 14:17           ` Thorsten Leemhuis
2022-03-21 14:56             ` Miquel Raynal
2022-03-21 15:16               ` Thorsten Leemhuis
2022-03-22  2:51                 ` Tokunori Ikegami
2022-03-16 17:27 ` [PATCH v4 0/3] " Miquel Raynal

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