Re: [PATCH v3 2/7] ACPI: Enable PPTT support on ARM64

[Lorenzo Pieralisi]

On Thu, Oct 12, 2017 at 02:48:51PM -0500, Jeremy Linton wrote:
> Now that we have a PPTT parser, in preparation for its use
> on arm64, lets build it.
> 
> Signed-off-by: Jeremy Linton <jeremy.linton@xxxxxxx>
> ---
>  arch/arm64/Kconfig         | 1 +
>  drivers/acpi/Makefile      | 1 +
>  drivers/acpi/arm64/Kconfig | 3 +++
>  3 files changed, 5 insertions(+)
> 
> diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
> index 0df64a6a56d4..68c9d1289735 100644
> --- a/arch/arm64/Kconfig
> +++ b/arch/arm64/Kconfig
> @@ -7,6 +7,7 @@ config ARM64
>  	select ACPI_REDUCED_HARDWARE_ONLY if ACPI
>  	select ACPI_MCFG if ACPI
>  	select ACPI_SPCR_TABLE if ACPI
> +	select ACPI_PPTT if ACPI
>  	select ARCH_CLOCKSOURCE_DATA
>  	select ARCH_HAS_DEBUG_VIRTUAL
>  	select ARCH_HAS_DEVMEM_IS_ALLOWED
> diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile
> index 90265ab4437a..c92a0c937551 100644
> --- a/drivers/acpi/Makefile
> +++ b/drivers/acpi/Makefile
> @@ -85,6 +85,7 @@ obj-$(CONFIG_ACPI_BGRT)		+= bgrt.o
>  obj-$(CONFIG_ACPI_CPPC_LIB)	+= cppc_acpi.o
>  obj-$(CONFIG_ACPI_SPCR_TABLE)	+= spcr.o
>  obj-$(CONFIG_ACPI_DEBUGGER_USER) += acpi_dbg.o
> +obj-$(CONFIG_ACPI_PPTT) 	+= pptt.o
>  
>  # processor has its own "processor." module_param namespace
>  processor-y			:= processor_driver.o
> diff --git a/drivers/acpi/arm64/Kconfig b/drivers/acpi/arm64/Kconfig
> index 5a6f80fce0d6..74b855a669ea 100644
> --- a/drivers/acpi/arm64/Kconfig
> +++ b/drivers/acpi/arm64/Kconfig
> @@ -7,3 +7,6 @@ config ACPI_IORT
>  
>  config ACPI_GTDT
>  	bool
> +
> +config ACPI_PPTT
> +	bool
> \ No newline at end of file

I do not understand the logic. Why should we have a Kconfig option
in drivers/acpi/arm64 for code in drivers/acpi ?

AFAIK PPTT is not an ACPI ARM64 specific binding.

Lorenzo