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Message-ID: <b622dbe4-9b18-4406-b82d-942e3ec01ff2@sapience.com>
Date:   Thu, 24 Aug 2023 07:29:10 -0400
From:   Genes Lists <lists@...ience.com>
To:     Keith Busch <kbusch@...nel.org>
Cc:     linux-kernel@...r.kernel.org, axboe@...nel.dk, sagi@...mberg.me,
        linux-nvme@...ts.infradead.org, hch@....de, arnd@...db.de,
        ricky_wu@...ltek.com, gregkh@...uxfoundation.org
Subject: Re: Possible nvme regression in 6.4.11

On 8/23/23 13:41, Keith Busch wrote:
> On Thu, Aug 17, 2023 at 05:16:01AM -0400, Genes Lists wrote:
>>> ----------------------------------------------------------------
>>> 69304c8d285b77c9a56d68f5ddb2558f27abf406 is the first bad commit
>>> commit 69304c8d285b77c9a56d68f5ddb2558f27abf406
>>> Author: Ricky WU <ricky_wu@...ltek.com>
>>> Date:   Tue Jul 25 09:10:54 2023 +0000
>>>
>>>       misc: rtsx: judge ASPM Mode to set PETXCFG Reg
>>>
>>>       commit 101bd907b4244a726980ee67f95ed9cafab6ff7a upstream.
>>>
>>>       ASPM Mode is ASPM_MODE_CFG need to judge the value of clkreq_0
>>>       to set HIGH or LOW, if the ASPM Mode is ASPM_MODE_REG
>>>       always set to HIGH during the initialization.
>>>
>>>       Cc: stable@...r.kernel.org
>>>       Signed-off-by: Ricky Wu <ricky_wu@...ltek.com>
>>>       Link:
>>> https://lore.kernel.org/r/52906c6836374c8cb068225954c5543a@realtek.com
>>>       Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
>>>
>>>    drivers/misc/cardreader/rts5227.c  |  2 +-
>>>    drivers/misc/cardreader/rts5228.c  | 18 ------------------
>>>    drivers/misc/cardreader/rts5249.c  |  3 +--
>>>    drivers/misc/cardreader/rts5260.c  | 18 ------------------
>>>    drivers/misc/cardreader/rts5261.c  | 18 ------------------
>>>    drivers/misc/cardreader/rtsx_pcr.c |  5 ++++-
>>>    6 files changed, 6 insertions(+), 58 deletions(-)
>>>
>>> ------------------------------------------------------
>>>
>>> And the machine does have this hardware:
>>>
>>> 03:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS525A
>>> PCI Express Card Reader (rev 01)
>>>           Subsystem: Dell RTS525A PCI Express Card Reader
>>>           Physical Slot: 1
>>>           Flags: bus master, fast devsel, latency 0, IRQ 141
>>>           Memory at ed100000 (32-bit, non-prefetchable) [size=4K]
>>>           Capabilities: [80] Power Management version 3
>>>           Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit+
>>>           Capabilities: [b0] Express Endpoint, MSI 00
>>>           Kernel driver in use: rtsx_pci
>>>           Kernel modules: rtsx_pci
>>>
>>>
>>>
>>
>>
>> Adding to CC list since bisect landed on
>>
>>     drivers/misc/cardreader/rtsx_pcr.c
>>
>> Thread starts here: https://lkml.org/lkml/2023/8/16/1154
> 
> I realize you can work around this by blacklisting the rtsx_pci, but
> that's not a pleasant solution. With only a few days left in 6.5, should
> the commit just be reverted?


Looks like here are more people having same problem than I was aware of 
earlier [1].

My recommendation now is to revert this.

thanks

gene

[1] https://bugs.archlinux.org/task/79439#comment221262


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