Re: [PATCH v2 3/5] ACPI: Execute platform _OSC also with query bit clear

[joeyli <jlee@suse.com>]

Hi Mika,

On Mon, Jun 07, 2021 at 07:10:59PM +0300, Mika Westerberg wrote:
> Hi,
> 
> On Mon, Jun 07, 2021 at 08:31:10PM +0800, joeyli wrote:
> > Hi Mika,
> > 
> > There have some machines be found on openSUSE Tumbleweed that this patch
> > causes that SSDT tables can not be dynamic loaded. The symptom is that
> > dmesg shows '_CPC not found' because SSDT table did not dynamic load.
> > 
> > [    1.149107] ACPI BIOS Error (bug): Could not resolve symbol [\_PR.PR00._CPC], AE_NOT_FOUND (20210105/psargs-330)
> > 
> > Looks that the firmware didn't response OSC_SB_CPCV2_SUPPORT after
> > kernel changed to new behavior. The openSUSE bug is here:
> > 
> > Bug 1185513 - ACPI BIOS Error after upgrade to 5.12.0-1-default 
> > https://bugzilla.suse.com/show_bug.cgi?id=1185513
> > 
> > Could you please help to give any suggestion?
> 
> There is another one that Red Hat reported here:
> 
> https://bugzilla.kernel.org/show_bug.cgi?id=213023
> 
> The Bugzilla entry also has a patch attached [1] from Hans, can you try it
> out and see if that fixes the issue?
> 
> [1] https://bugzilla.kernel.org/attachment.cgi?id=297195
>

Thanks for your information! Hans's patch looks reasonable.

I will backport to openSUSE TW and let bug reporter helps to test it. We will
add comment on kernel.org bugzilla.

Thanks a lot!
Joey Lee