[Bug 221065] ideapad_acpi: unexpected charge_types spam on Yoga Pro 7 14ASP9

[bugzilla-daemon@kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=221065

--- Comment #89 from Rick (rickk1166@gmail.com) ---
(In reply to Rong Zhang from comment #85)

> Please execute
> 
>   echo 'file drivers/acpi/ec.c +p' | sudo tee /proc/dynamic_debug/control
> 
> beforehand, so that I can see which EC queries arrive before the pause event.
> 
> Please also spam magic sysrq until the pause finishes, so that I can see
> more samples during the pause. In detail, you can press Alt (keep it
> pressed), press Fn+S once (no need to keep them pressed), and quickly spam l
> and w alternately. You can do some practice beforehand.
> 
> With these changes, your dmesg dump will be extremely long, so please upload
> it as an attachment.
> 
> Thanks for being willing to investigate the issue together!

I appreciate that you have been keeping things relatively simple and breaking
the information gathering into reasonable chunks.

It took me embarrassingly long to figure out how to attach the files - but at
least they appear to be there now!

Before starting I opened one terminal with
   dmesg -w
And in another terminal I did 
   sudo sysctl kernel.sysrq=1
   echo 'file drivers/acpi/ec.c +p' | sudo tee /proc/dynamic_debug/control

As there is now more output into the dmesg window I decided to capture just the
system sitting alone through two pause events and captured that in my first
upload #310145

Next I did the spamming requested (both l and w alternating until the pause
ended)
This is contained in attachment #310146

I noticed with the first spamming attempt that the new output ACPI messages
happen in the dmesg window before the system actually pauses.  So I did another
spamming attempt but this time I tried to start spamming as soon as I saw the
dmesg window start displaying the new ACPI messages.  It is likely this file
has data that starts earlier and personally I would start looking at this one
first.
This is contained in attachment #310147

As always - let me know if you want more.

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