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From:   "Rafael J. Wysocki" <rafael@kernel.org>
Date:   Wed, 6 Dec 2023 20:49:30 +0100
Message-ID: <CAJZ5v0h-7mhSP5BAig6fj-pax6V_m=u2ygjYU4DxMypJfqv5Cg@mail.gmail.com>
Subject: Re: [PATCH] ACPICA: Remove unused struct field and incorrect comments
To:     Yuntao Wang <ytcoode@gmail.com>
Cc:     Robert Moore <robert.moore@intel.com>,
        "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>,
        Len Brown <lenb@kernel.org>, linux-acpi@vger.kernel.org,
        acpica-devel@lists.linux.dev, linux-kernel@vger.kernel.org
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On Mon, Nov 27, 2023 at 6:59 AM Yuntao Wang <ytcoode@gmail.com> wrote:
>
> The return_object_type field in `struct acpi_evaluate_info` is unused,
> so remove it.
>
> There are also some issues in the comments of acpi_ps_execute_method().
> First, the parameter_type field has already been removed from
> `struct acpi_evaluate_info`, so the corresponding field description in
> the comments should also be removed. Second, the return_object field
> description in the comments is duplicated. Remove these incorrect comments.
>
> Signed-off-by: Yuntao Wang <ytcoode@gmail.com>
> ---
>  drivers/acpi/acpica/acstruct.h | 1 -
>  drivers/acpi/acpica/psxface.c  | 3 ---
>  2 files changed, 4 deletions(-)

This is ACPICA code which comes from a separate project.

The way to change it is to submit a pull request with the desired change
to the upstream ACPICA project on GitHub and add a Link tag pointing
to the upstream PR to the corresponding Linux patch.  Then, the Linux
patch can only be applied after the corresponding upstream PR has been
merged.

Thanks!

> diff --git a/drivers/acpi/acpica/acstruct.h b/drivers/acpi/acpica/acstruct.h
> index f8fee94ba708..fe57c3a16e59 100644
> --- a/drivers/acpi/acpica/acstruct.h
> +++ b/drivers/acpi/acpica/acstruct.h
> @@ -169,7 +169,6 @@ struct acpi_evaluate_info {
>         u16 param_count;        /* Count of the input argument list */
>         u16 node_flags;         /* Same as Node->Flags */
>         u8 pass_number;         /* Parser pass number */
> -       u8 return_object_type;  /* Object type of the returned object */
>         u8 flags;               /* General flags */
>  };
>
> diff --git a/drivers/acpi/acpica/psxface.c b/drivers/acpi/acpica/psxface.c
> index 6f4eace0ba69..df5679bbc510 100644
> --- a/drivers/acpi/acpica/psxface.c
> +++ b/drivers/acpi/acpica/psxface.c
> @@ -70,9 +70,6 @@ acpi_debug_trace(const char *name, u32 debug_level, u32 debug_layer, u32 flags)
>   *                                    NULL if no parameters are being passed.
>   *                  return_object   - Where to put method's return value (if
>   *                                    any). If NULL, no value is returned.
> - *                  parameter_type  - Type of Parameter list
> - *                  return_object   - Where to put method's return value (if
> - *                                    any). If NULL, no value is returned.
>   *                  pass_number     - Parse or execute pass
>   *
>   * RETURN:      Status
> --
> 2.43.0
>
>