APPLIED Re: [SRU] [OEM-5.6] [PATCH 0/3] Prevent thermal shutdown during boot process

[Timo Aaltonen]

On 29.11.2020 19.35, Kai-Heng Feng wrote:
> BugLink: https://bugs.launchpad.net/bugs/1906168
> 
> [Impact]
> Surprising thermal shutdown at boot on Intel based mobile workstations.
> 
> [Fix]
> Since these thermal devcies are not in ACPI ThermalZone, OS shouldn't
> shutdown the system.
> 
> These critial temperatures are for usespace to handle, so let kernel
> know it shouldn't handle it.
> 
> SRU for stable kernels will be sent after the fix is in upstream.
> 
> [Test]
> Use reboot stress as a reproducer. 5% chance to see a surprising
> shutdown at boot.
> 
> With the fix applied, the thermal shutdown is no longer reproducible.
> 
> [Where problems could occur]
> For ACPI based platforms, we still have "acpitz" to protect systems from
> overheating. If these acpitz sensors don't work, then the system could
> face real overheating issue.
> 
> Kai-Heng Feng (3):
>    UBUNTU: SAUCE: thermal: core: Add indication for userspace usage
>    UBUNTU: SAUCE: thermal: int340x: Indicate userspace usage
>    UBUNTU: SAUCE: thermal: intel: intel_pch_thermal: Indicate userspace
>      usage
> 
>   drivers/thermal/intel/int340x_thermal/int3400_thermal.c     | 1 +
>   .../thermal/intel/int340x_thermal/int340x_thermal_zone.c    | 1 +
>   drivers/thermal/intel/intel_pch_thermal.c                   | 6 +++++-
>   drivers/thermal/thermal_core.c                              | 3 +++
>   include/linux/thermal.h                                     | 2 ++
>   5 files changed, 12 insertions(+), 1 deletion(-)
> 

applied to oem-5.6, thanks

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