[PATCH] ACPI: video: Add backlight=native DMI quirk for Acer Aspire 4810T

[Rafael J. Wysocki]

On Fri, Jan 13, 2023 at 12:41 PM Hans de Goede <hdegoede at redhat.com> wrote:
>
> The Acer Aspire 4810T predates Windows 8, so it defaults to using
> acpi_video# for backlight control, but this is non functional on
> this model.
>
> Add a DMI quirk to use the native backlight interface which does
> work properly.
>
> Signed-off-by: Hans de Goede <hdegoede at redhat.com>
> ---
>  drivers/acpi/video_detect.c | 8 ++++++++
>  1 file changed, 8 insertions(+)
>
> diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c
> index d4edd64dcc2f..fb526ba8825b 100644
> --- a/drivers/acpi/video_detect.c
> +++ b/drivers/acpi/video_detect.c
> @@ -515,6 +515,14 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
>                 DMI_MATCH(DMI_PRODUCT_NAME, "Precision 7510"),
>                 },
>         },
> +       {
> +        .callback = video_detect_force_native,
> +        /* Acer Aspire 4810T */
> +        .matches = {
> +               DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
> +               DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 4810T"),
> +               },
> +       },
>         {
>          .callback = video_detect_force_native,
>          /* Acer Aspire 5738z */
> --

Applied as 6.2-rc material, thanks!