linux-kernel - Re: [PATCH v1] LoongArch: Remove CONFIG_ACPI_TABLE_UPGRADE in platform

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Date: Wed, 29 May 2024 16:49:30 +0800
From: Huacai Chen <chenhuacai@...nel.org>
To: Tiezhu Yang <yangtiezhu@...ngson.cn>
Cc: rafael@...nel.org, loongarch@...ts.linux.dev, linux-acpi@...r.kernel.org, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1] LoongArch: Remove CONFIG_ACPI_TABLE_UPGRADE in platform_init()

Applied, thank you.

Huacai

On Wed, May 29, 2024 at 2:32 PM Tiezhu Yang <yangtiezhu@...ngson.cn> wrote:
>
> acpi_table_upgrade() and acpi_boot_table_init() are defined as
> empty function under !CONFIG_ACPI_TABLE_UPGRADE and !CONFIG_ACPI
> in include/linux/acpi.h, there are no implicit declaration errors
> with various configs.
>
> As Huacai suggested, CONFIG_ACPI_TABLE_UPGRADE is ugly and not
> necessary here, just remove it. At the same time, just keep
> CONFIG_ACPI to prevent build error and give a signal to tell
> us the code is ACPI-specific, and also put acpi_table_upgrade()
> under CONFIG_ACPI.
>
>   #ifdef CONFIG_ACPI_TABLE_UPGRADE
>   void acpi_table_upgrade(void);
>   #else
>   static inline void acpi_table_upgrade(void) { }
>   #endif
>
>   #ifdef        CONFIG_ACPI
>   ...
>   void acpi_boot_table_init (void);
>   ...
>   #else /* !CONFIG_ACPI */
>   ...
>   static inline void acpi_boot_table_init(void)
>   {
>   }
>   ...
>   #endif        /* !CONFIG_ACPI */
>
> Signed-off-by: Tiezhu Yang <yangtiezhu@...ngson.cn>
> ---
>  arch/loongarch/kernel/setup.c | 4 +---
>  1 file changed, 1 insertion(+), 3 deletions(-)
>
> diff --git a/arch/loongarch/kernel/setup.c b/arch/loongarch/kernel/setup.c
> index ea6d5db6c878..08a077e4efd7 100644
> --- a/arch/loongarch/kernel/setup.c
> +++ b/arch/loongarch/kernel/setup.c
> @@ -353,10 +353,8 @@ void __init platform_init(void)
>         arch_reserve_vmcore();
>         arch_reserve_crashkernel();
>
> -#ifdef CONFIG_ACPI_TABLE_UPGRADE
> -       acpi_table_upgrade();
> -#endif
>  #ifdef CONFIG_ACPI
> +       acpi_table_upgrade();
>         acpi_gbl_use_default_register_widths = false;
>         acpi_boot_table_init();
>  #endif
> --
> 2.42.0
>