linux-kernel - Re: [RFC part1 PATCH 4/7] ARM64 / ACPI: Introduce the skeleton of

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Date:	Wed, 04 Dec 2013 22:30:06 +0800
From:	Hanjun Guo <hanjun.guo@...aro.org>
To:	Rob Herring <robherring2@...il.com>
CC:	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will.deacon@....com>,
	Russell King - ARM Linux <linux@....linux.org.uk>,
	Daniel Lezcano <daniel.lezcano@...aro.org>,
	Mark Rutland <mark.rutland@....com>,
	Matthew Garrett <mjg59@...f.ucam.org>,
	"linaro-kernel@...ts.linaro.org" <linaro-kernel@...ts.linaro.org>,
	Graeme Gregory <graeme.gregory@...aro.org>,
	Al Stone <al.stone@...aro.org>,
	Linaro Patches <patches@...aro.org>,
	Olof Johansson <olof@...om.net>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Rob Herring <rob.herring@...xeda.com>,
	linaro-acpi@...ts.linaro.org, linux-acpi@...r.kernel.org,
	Grant Likely <grant.likely@...aro.org>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [RFC part1 PATCH 4/7] ARM64 / ACPI: Introduce the skeleton of
 _PDC related for ARM64

On 2013年12月04日 01:12, Rob Herring wrote:
> On Tue, Dec 3, 2013 at 10:36 AM, Hanjun Guo <hanjun.guo@...aro.org> wrote:
[...]
> +#ifndef _ASM_ARM_ACPI_H
> +#define _ASM_ARM_ACPI_H
> +
> +static inline bool arch_has_acpi_pdc(void)
> +{
> +       return false;   /* always false for now */
> +}
> +
> +static inline void arch_acpi_set_pdc_bits(u32 *buf)
> +{
> +       return;
> +}
> +
> +#endif /*_ASM_ARM_ACPI_H*/
> diff --git a/arch/arm64/include/asm/processor.h b/arch/arm64/include/asm/processor.h
> index 45b20cd..73b1d3a 100644
> --- a/arch/arm64/include/asm/processor.h
> +++ b/arch/arm64/include/asm/processor.h
> @@ -162,6 +162,17 @@ static inline void spin_lock_prefetch(const void *x)
>
>   #define HAVE_ARCH_PICK_MMAP_LAYOUT
>
> +#ifdef CONFIG_ACPI
> The ifdef is not necessary.

Good catch, will fix it in next version.

Thanks for the comments.

Hanjun

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