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Date:   Wed, 15 Sep 2021 07:42:20 +0200
From:   Lino Sanfilippo <>
To:     Vladimir Oltean <>
Cc:     Andrew Lunn <>,
        Florian Fainelli <>,
        Saravana Kannan <>,
        "Rafael J. Wysocki" <>,,,,,,,,
Subject: Re: [PATCH 0/3] Fix for KSZ DSA switch shutdown


On 14.09.21 at 20:48, Vladimir Oltean wrote:
> On Mon, Sep 13, 2021 at 01:01:20PM +0200, Lino Sanfilippo wrote:
>>>>> Could you post the full kernel output? The picture you've posted is
>>>>> truncated and only shows a WARN_ON in rpi_firmware_transaction and is
>>>>> probably a symptom and not the issue (which is above and not shown).
>>>> Unfortunately I dont see anything in the kernel log. The console output is all I get,
>>>> thats why I made the photo.
>>> To clarify, are you saying nothing above this line gets printed? Because
>>> the part of the log you've posted in the picture is pretty much
>>> unworkable:
>>> [   99.375389] [<bf0dc56c>] (bcm2835_spi_shutdown [spi_bcm2835]) from [<c0863ca0>] (platform_drv_shutdown+0x2c/0x30)
>>> How do you access the device's serial console? Use a program with a
>>> scrollback buffer like GNU screen or something.
>> Ah no, this is not over a serial console. This is what I see via hdmi. I do not have a working serial connection yet.
>> Sorry I know this trace part is not very useful, I will try to get a full dump.
> Lino, are you going to provide a kernel output so I could look at your new breakage?
> If you could set up a pstore logger with a ramoops region, you could
> dump the log after the fact. Or if HDMI is all you have, you could use
> an HDMI capture card to record it. Or just record the screen you're
> looking at, as long as you don't have very shaky hands, whatever...

Yes, I will try to get something useful. I have already set up a serial connection
now. I still see the shutdown stopping with your patch but I have not seen the
kernel dump any more. I will try further and provide a dump as soon as I am successful.


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