[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 #100 from Rong Zhang (i@rong.moe) ---
(In reply to Avraham Hollander from comment #99)
> Hmm. I'm still getting a little bit of spam from ucsi_acpi. I got the same
> "ucsi_acpi USBC000:00: GET_CONNECTOR_STATUS failed (-5)" as well as
> "ucsi_acpi USBC000:00: unknown error 0." I did re-enable the ucsi_acpi
> driver though. I'm inclined to just disable it. I don't think it really
> provides anything for me other than knowing which port the charger is
> plugged into. Charger state is already handled by ACPI_AC.

Thanks for the tag!

My series aims to reduce the pressure on the broken mutex and hence reduce the
probability of triggering the mutex bug. It cannot miraculously fix all dmesg
spamming. As long as it reduces some dmesg messages and/or system freeze, it
works as expected. A proper fix will be a BIOS update, but unfortunately we
haven't heard good news about it.

And it seems that whether seeing the ucsi_acpi spamming depends on models. Some
folks in the thread rarely see it while others see it more frequently, IIRC.

I actually tried to submit a patch to disable ucsi_acpi on devices with the
mutex bug. It is never merged as Mark wanted some more time for the FW team to
investigate the issue.

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