From mboxrd@z Thu Jan  1 00:00:00 1970
From: Will Deacon <will.deacon@arm.com>
Subject: Re: [PATCH 04/20] ARM64 / ACPI: Introduce arm_core.c and its related
 head file
Date: Fri, 17 Jan 2014 14:12:41 +0000
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References: <1389961514-13562-1-git-send-email-hanjun.guo@linaro.org>
 <1389961514-13562-5-git-send-email-hanjun.guo@linaro.org>
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To: Hanjun Guo <hanjun.guo@linaro.org>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>, Catalin Marinas <Catalin.Marinas@arm.com>, Russell King - ARM Linux <linux@arm.linux.org.uk>, "linux-acpi@vger.kernel.org" <linux-acpi@vger.kernel.org>, "linux-arm-kernel@lists.infradead.org" <linux-arm-kernel@lists.infradead.org>, "grant.likely@linaro.org" <grant.likely@linaro.org>, Matthew Garrett <mjg59@srcf.ucam.org>, Olof Johansson <olof@lixom.net>, Linus Walleij <linus.walleij@linaro.org>, Bjorn Helgaas <bhelgaas@google.com>, Rob Herring <robh@kernel.org>, Mark Rutland <Mark.Rutland@arm.com>, Arnd Bergmann <arnd@arndb.de>, "patches@linaro.org" <patches@linaro.org>, "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>, "linaro-kernel@lists.linaro.org" <linaro-kernel@lists.linaro.org>, "linaro-acpi@lists.linaro.org" <linaro-acpi@lists.linaro.org>, Charles Garcia-Tobin <Charles.Garcia-Tobin@arm.com>Al Stone <a>

On Fri, Jan 17, 2014 at 12:24:58PM +0000, Hanjun Guo wrote:
> Introduce arm_core.c and its related head file, after this patch,
> we can get ACPI tables from firmware on ARM64 now.
> 
> Signed-off-by: Al Stone <al.stone@linaro.org>
> Signed-off-by: Graeme Gregory <graeme.gregory@linaro.org>
> Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>

[...]

> diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c
> index bd9bbd0..2210353 100644
> --- a/arch/arm64/kernel/setup.c
> +++ b/arch/arm64/kernel/setup.c
> @@ -41,6 +41,7 @@
>  #include <linux/memblock.h>
>  #include <linux/of_fdt.h>
>  #include <linux/of_platform.h>
> +#include <linux/acpi.h>
>  
>  #include <asm/cputype.h>
>  #include <asm/elf.h>
> @@ -225,6 +226,11 @@ void __init setup_arch(char **cmdline_p)
>  
>  	arm64_memblock_init();
>  
> +	/* Parse the ACPI tables for possible boot-time configuration */
> +	acpi_boot_table_init();
> +	early_acpi_boot_init();
> +	acpi_boot_init();

Do we really need *three* back-to-back calls for ACPI to initialise?

Will