Re: power-off delay/hang due to commit 6d25be57 (mainline)

[Stephen Berman]

On Thu, 31 Dec 2020 21:46:11 +0100 "Rafael J. Wysocki" <rjw@xxxxxxxxxxxxx> wrote:

> ATM, I'm tempted to do something like the patch below (with the rationale
> that it shouldn't be necessary to read the temperature right after updating
> the trip points if polling is in use, because the next update through polling
> will cause it to be read anyway and it will trigger trip point actions as
> needed).
>
> Stephen, can you give it a go, please?

On Sat, 02 Jan 2021 12:03:17 +0100 "Rafael J. Wysocki" <rjw@xxxxxxxxxxxxx> wrote:

> There is one more way to address this, probably better: instead of checking the
> temperature right away in acpi_thermal_notify(), queue that on acpi_thermal_pm_queue
> and so only if another thermal check is not pending.
>
> This way there will be at most one temperature check coming from
> acpi_thermal_notify() queued up at any time which should prevent the
> build-up of work items from taking place.
>
> So something like this:

Thanks for the patches.  I'll try them as soon as I can.

Steve Berman