Re: [PATCH 04/20] ARM64 / ACPI: Introduce arm_core.c and its relatedhead file

From: Will Deacon
Date: Fri Jan 17 2014 - 09:12:55 EST


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@xxxxxxxxxx>
> Signed-off-by: Graeme Gregory <graeme.gregory@xxxxxxxxxx>
> Signed-off-by: Hanjun Guo <hanjun.guo@xxxxxxxxxx>

[...]

> 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
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