Re: dmesg: ACPI Warning: Firmware issue warning spaming

What do you think opening a review about this fix/tweak to stop this
spamming that blinds dmesg?

Masachika ISHIZUKA <ish@amail.plala.or.jp> escreveu no dia domingo,
12/06/2022 à(s) 09:03:

> > I'm running CURRENT 8d95f500521 and I'm receiving loads of dmesg
> warnings:
> > ---
> > ACPI Warning: Firmware issue: Excessive sleep time (0x0000000000000010
> ms >
> > 10 ms) in ACPI Control Method (20220331/exsystem-347)
> > ---
> > Is there a way to silence it?
>
>   Hi.
>
>   I think these messages are only informational and make them easier
> to miss more important messages.
>   My old machine's ACPI bios is worked at 20msec, so I did patch to
> /usr/src/sys/contrib/dev/acpica/components/executer/exsystem.c like below.
>
> % diff -ruN exsystem.c.orig exsystem.c
> --- exsystem.c.orig     2022-04-03 07:18:33.339997000 +0900
> +++ exsystem.c  2022-04-26 19:13:06.814856000 +0900
> @@ -342,10 +342,10 @@
>       * Warn users about excessive sleep times, so ASL code can be
> improved to
>       * use polling or similar techniques.
>       */
> -    if (HowLongMs > 10)
> +    if (HowLongMs > 20)
>      {
>         ACPI_WARNING ((AE_INFO,
> -            "Firmware issue: Excessive sleep time (0x%8.8X%8.8X ms > 10
> ms)"
> +            "Firmware issue: Excessive sleep time (0x%8.8X%8.8X ms > 20
> ms)"
>              " in ACPI Control Method",
>              ACPI_FORMAT_UINT64 (HowLongMs)));
>      }
> --
> Masachika ISHIZUKA
>
>