linux-kernel - Re: [PATCH] mwifiex: Add quirk resetting the PCI bridge on MS Surface devices

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Date:   Tue, 12 Oct 2021 11:00:37 +0200
From:   Pali Rohár <pali@...nel.org>
To:     Jonas Dreßler <verdre@...d.nl>
Cc:     Bjorn Helgaas <helgaas@...nel.org>,
        Amitkumar Karwar <amitkarwar@...il.com>,
        Ganapathi Bhat <ganapathi017@...il.com>,
        Xinming Hu <huxinming820@...il.com>,
        Kalle Valo <kvalo@...eaurora.org>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Tsuchiya Yuto <kitakar@...il.com>,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
        Maximilian Luz <luzmaximilian@...il.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Johannes Berg <johannes@...solutions.net>,
        Brian Norris <briannorris@...omium.org>,
        David Laight <David.Laight@...LAB.COM>,
        Alex Williamson <alex.williamson@...hat.com>
Subject: Re: [PATCH] mwifiex: Add quirk resetting the PCI bridge on MS
 Surface devices

On Tuesday 12 October 2021 10:48:49 Jonas Dreßler wrote:
> 1) Revert the cards firmware in linux-firmware back to the second-latest
> version. That firmware didn't report a fixed LTR value and also doesn't
> have any other obvious issues I know of compared to the latest one.

FYI, there are new bugs with new firmware versions for 8997 sent by NXP
to linux-firmware repository... and questions what to do with it. Seems
that NXP again do not respond to any questions after new version was
merged into linux-firmware repo.

https://lore.kernel.org/linux-firmware/edeb34bc-7c85-7f1d-79e4-e3e21df86334@gk2.net/

So firmware revert also for other ex-Marvell / NXP chips is not
something which could not happen.