Subject: Re: [RFC PATCH] acpi/arm64: ignore 5.1 FADTs that are reported as 5.0

From: Lee Jones <[email-masked]>
Date: Thu, 20 Jun 2019 08:57:32 +0100

On Wed, 19 Jun 2019, Sudeep Holla wrote:

> On Wed, Jun 19, 2019 at 02:18:31PM +0200, Ard Biesheuvel wrote:
> > Some Qualcomm Snapdragon based laptops built to run Microsoft Windows
> > are clearly ACPI 5.1 based, given that that is the first ACPI revision
> > that supports ARM, and introduced the FADT 'arm_boot_flags' field,
> > which has a non-zero field on those systems.
> > 
> > So in these cases, infer from the ARM boot flags that the FADT must be
> > 5.1 or later, and treat it as 5.1.
> > 
> 
> Makes sense and looks simple to me.
> 
> Acked-by: Sudeep Holla <[email-masked]>

Could we pleeeeease have this in for v5.3?

We have available, consumer-level platforms that rely on this change.

-- 
Lee Jones [李琼斯]
Linaro Services Technical Lead
Linaro.org │ Open source software for ARM SoCs
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