linux-kernel - Re: [PATCH] ACPI: Parse entire table as a term_list for Dell XPS 9570 and Precision M5530

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Message-ID: <CAHp75VfQH6ssvp14HSLNGPL=eUVQCnrC-ifoKMuKoCkR1s=3YA@mail.gmail.com>
Date:   Mon, 29 Jan 2018 14:56:45 +0200
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Kai-Heng Feng <kai.heng.feng@...onical.com>
Cc:     "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Len Brown <lenb@...nel.org>,
        ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Mario Limonciello <mario.limonciello@...l.com>
Subject: Re: [PATCH] ACPI: Parse entire table as a term_list for Dell XPS 9570
 and Precision M5530

On Mon, Jan 29, 2018 at 8:10 AM, Kai-Heng Feng
<kai.heng.feng@...onical.com> wrote:
> The i2c touchpad on Dell XPS 9570 and Precision M5530 doesn't work out
> of box.
>
> The touchpad relies on its _INI method to update its _HID value from
> XXXX0000 to SYNA2393.
> Also, the _STA relies on value of I2CN to report correct status.
>
> Set acpi_gbl_parse_table_as_term_list so the value of I2CN can be
> correctly set up, and _INI can get run. The ACPI table in this machine
> is designed to get parsed this way.

> +#ifdef CONFIG_X86

Why do you need separate #ifdef?

> +static const struct dmi_system_id gbl_term_list_dmi_table[] __initconst = {

I think you can just add new items to the existing table, while renaming it like

dsdt_dmi_table -> acpi_quirks_dmi_table

-- 
With Best Regards,
Andy Shevchenko