Re: [PATCH][v6] ACPI / PM: Introduce efi poweroff for HW-full platforms without _S5

[Rafael J. Wysocki]

On Tuesday, March 22, 2016 08:51:10 AM Chen Yu wrote:
> The problem is Linux registers pm_power_off = efi_power_off only if
> we are in hardware reduced mode. Actually, what we also want is to do
> this when ACPI S5 is simply not supported on non-legacy platforms.
> Since some future Intel platforms are HW-full mode where the DSDT
> fails to supply an _S5 object(without SLP_TYP), we should let such
> kind of platform to leverage efi runtime service to poweroff.
> 
> This patch uses efi power off as first choice when S5 is unavailable,
> even if there is a customized poweroff(driver provided, eg).
> Meanwhile, the legacy platforms will not be affected because there is
> no path for them to overwrite the pm_power_off to efi power off.
> 
> Suggested-by: Len Brown <len.brown@xxxxxxxxx>
> Reviewed-by: Matt Fleming <matt@xxxxxxxxxxxxxxxxxxx>
> Signed-off-by: Chen Yu <yu.c.chen@xxxxxxxxx>

Applied, thanks!