[Bug 217947] WARNING at drivers/acpi/platform_profile.c:74 in platform_profile_show()

[bugzilla-daemon@kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=217947

--- Comment #3 from Jiri Slaby (jirislaby@gmail.com) ---
(In reply to Mark Pearson from comment #2)
> Can I confirm this is on a T14s G3 AMD platform?

Yes.

> It looks like this line is causing problems on this platform:
> funcmode = (output >> DYTC_GET_FUNCTION_BIT) & 0xF;
> 
> Normally that should return PSC mode (in this case - unless you have AMT
> mode, which you don't on that gen platform). 
> But it's saying it is in standard mode instead....which is peculiar. The FW
> is doing something non-standard to other platforms.

Interestingly, it happens only initially and during suspend. Other than that,
it's in PSC mode likely.

> Do you still get the warning when:
>  - you're in performance or low-power modes?

I am on always in low-power mode. This notebook is crap, it's noisy and very
hot in balanced or performance modes even when idling.

>  - you're in lap mode?

What is that?

> As a quick test could you try adding:
> 
>  /* Check if we are PSC mode, or have AMT enabled */
>  funcmode = (output >> DYTC_GET_FUNCTION_BIT) & 0xF;
> +if (funcmode == DYTC_FUNCTION_STD)
> +  funcmode = DYTC_FUNCTION_PSC;
> 
> To see if it behaves correctly please?

Will try.

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