linux-kernel - Re: [PATCH v1] mtd: spinand: Add support for 5-byte IDs

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Date: Fri, 5 Apr 2024 08:37:48 +0200
From: Greg KH <gregkh@...uxfoundation.org>
To: Dmitry Rokosov <ddrokosov@...utedevices.com>
Cc: quic_sridsn@...cinc.com, quic_mdalam@...cinc.com, ezra@...yb.ch,
	gch981213@...il.com, miquel.raynal@...tlin.com, richard@....at,
	sashal@...nel.org, vigneshr@...com, kernel@...utedevices.com,
	rockosov@...il.com, linux-kernel@...r.kernel.org,
	linux-mtd@...ts.infradead.org,
	Ezra Buehler <ezra.buehler@...qvarnagroup.com>,
	stable@...r.kernel.org,
	Martin Kurbanov <mmkurbanov@...utedevices.com>
Subject: Re: [PATCH v1] mtd: spinand: Add support for 5-byte IDs

On Thu, Apr 04, 2024 at 03:15:21PM +0300, Dmitry Rokosov wrote:
> From: Ezra Buehler <ezra.buehler@...qvarnagroup.com>
> 
> [ Upstream commit 34a956739d295de6010cdaafeed698ccbba87ea4 ]

This commit is already in the following releases:
	6.6.24 6.7.12 6.8.3 6.9-rc1

> E.g. ESMT chips will return an identification code with a length of 5
> bytes. In order to prevent ambiguity, flash chips would actually need to
> return IDs that are up to 17 or more bytes long due to JEDEC's
> continuation scheme. I understand that if a manufacturer ID is located
> in bank N of JEDEC's database (there are currently 16 banks), N - 1
> continuation codes (7Fh) need to be added to the identification code
> (comprising of manufacturer ID and device ID). However, most flash chip
> manufacturers don't seem to implement this (correctly).
> 
> Cc: <stable@...r.kernel.org> # 6.6.23
> Cc: <stable@...r.kernel.org> # 6.7.11
> Cc: <stable@...r.kernel.org> # 6.8.2
> Signed-off-by: Ezra Buehler <ezra.buehler@...qvarnagroup.com>
> Reviewed-by: Martin Kurbanov <mmkurbanov@...utedevices.com>
> Tested-by: Martin Kurbanov <mmkurbanov@...utedevices.com>
> Signed-off-by: Miquel Raynal <miquel.raynal@...tlin.com>
> Link: https://lore.kernel.org/linux-mtd/20240125200108.24374-2-ezra@easyb.ch
> Signed-off-by: Dmitry Rokosov <ddrokosov@...utedevices.com>
> ---
> 
> In the patch series [1] only one patch was marked with Fixes tag, that's
> why the secon patch was not applied to 6.6.y, 6.7.y and 6.8y. It breaks
> ESMT detection flow with logs:
> 
> [    0.770730] spi-nand spi0.0: unknown raw ID c8017f7f
> [    0.772688] spi-nand: probe of spi0.0 failed with error -524
> 
> Please cherry-pick the second patch from the series to 6.6.y, 6.7.y and
> 6.8.y.

What commit id is "the second patch" here?  The one referenced above?
If so, again, this is already in a released kernel, so I'm confused as
to what to do here.

thanks,

greg k-h