RE: [v5.5] Fix up eSDHC issue on P2020

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> -----Original Message-----
> From: Yangbo Lu <yangbo.lu@xxxxxxx>
> Sent: Wednesday, April 15, 2020 11:52 AM
> To: stable@xxxxxxxxxxxxxxx
> Cc: Y.b. Lu <yangbo.lu@xxxxxxx>; Greg Kroah-Hartman
> <gregkh@xxxxxxxxxxxxxxxxxxx>; Sasha Levin <sashal@xxxxxxxxxx>; Daniel
> Walker <danielwa@xxxxxxxxx>; Ulf Hansson <ulf.hansson@xxxxxxxxxx>
> Subject: [v5.5] Fix up eSDHC issue on P2020
> 
> The upstream commit broke P2020 eSDHC.
> fe0acab mmc: sdhci-of-esdhc: fix P2020 errata handling
> 
> While the issue was fixed by later commit.
> 2aa3d82 mmc: sdhci-of-esdhc: fix esdhc_reset() for different controller
> versions
> 
> The commit fe0acab had been applied to stable kernel 5.5, 5.4,
> 4.19, 4.14, 4.9, and 4.4 without that fix-up.
> 
> To fix up P2020 eSDHC on the stable kernels, backport the fix-up 2aa3d82
> kernel 5.4 and 5.5.
> 
> Please help to revert fe0acab on 4.19, 4.14, 4.9 and 4.4, since there are
> many conflicts to cherry-pick the fix-up, and fe0acab is actually not strongly
> required for handling errata which is hardly triggered.
> 
> The email thread for the issue discussion.
> https://www.spinics.net/lists/stable/msg375823.html
> 
> Yangbo Lu (4):
>   mmc: sdhci-of-esdhc: fix esdhc_reset() for different controller
>     versions
>   mmc: sdhci-of-esdhc: fix clock setting for different controller
>     versions
>   mmc: sdhci-of-esdhc: fix transfer mode register reading
>   mmc: sdhci-of-esdhc: fix serious issue clock is always disabled
> 
>  drivers/mmc/host/sdhci-of-esdhc.c | 174
> +++++++++++++++++++++++++-------------
>  1 file changed, 114 insertions(+), 60 deletions(-)

Sorry, please ignore the wrong patch list and changes here in cover letter.
It is to backport only fix-up 2aa3d82.

> 
> --
> 2.7.4





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