linux-kernel - Re: [PATCH] ACPI: save NVS memory for Lenovo G40-45

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Date:   Wed, 29 Jun 2022 19:53:07 +0200
From:   "Rafael J. Wysocki" <rafael@...nel.org>
To:     Manyi Li <limanyi@...ontech.com>
Cc:     "Rafael J. Wysocki" <rafael@...nel.org>,
        Len Brown <lenb@...nel.org>,
        ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ACPI: save NVS memory for Lenovo G40-45

On Wed, Jun 22, 2022 at 9:43 AM Manyi Li <limanyi@...ontech.com> wrote:
>
> [821d6f0359b0614792ab8e2fb93b503e25a65079] is to make machines
> produced from 2012 to now not saving NVS region to accelerate S3.
>
> But, Lenovo G40-45, a platform released in 2015, still needs NVS memory
> saving during S3. A quirk is introduced for this platform.
>
> Signed-off-by: Manyi Li <limanyi@...ontech.com>
> ---
>  drivers/acpi/sleep.c | 8 ++++++++
>  1 file changed, 8 insertions(+)
>
> diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
> index 04ea1569df78..974746e6e59d 100644
> --- a/drivers/acpi/sleep.c
> +++ b/drivers/acpi/sleep.c
> @@ -360,6 +360,14 @@ static const struct dmi_system_id acpisleep_dmi_table[] __initconst = {
>                 DMI_MATCH(DMI_PRODUCT_NAME, "80E3"),
>                 },
>         },
> +       {
> +       .callback = init_nvs_save_s3,
> +       .ident = "Lenovo G40-45",
> +       .matches = {
> +               DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
> +               DMI_MATCH(DMI_PRODUCT_NAME, "80E1"),
> +               },
> +       },
>         /*
>          * ThinkPad X1 Tablet(2016) cannot do suspend-to-idle using
>          * the Low Power S0 Idle firmware interface (see
> --

Applied as 5.20 material, thanks!