Re: [PATCH][V2] ACPI: video: use ACPI backlight for HP 635 Notebook

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On Mon, Sep 14, 2020 at 12:34 AM Alex Hung <alex.hung@xxxxxxxxxxxxx> wrote:
>
> Default backlight interface is AMD's radeon_bl0 which does not work on
> this system. As a result, let's for ACPI backlight interface for this
> system.
>
> BugLink: https://bugs.launchpad.net/bugs/1894667
>
> Cc: stable@xxxxxxxxxxxxxxx
> Signed-off-by: Alex Hung <alex.hung@xxxxxxxxxxxxx>
> ---
>
> V2: correct Cc to stable
>
>  drivers/acpi/video_detect.c | 9 +++++++++
>  1 file changed, 9 insertions(+)
>
> diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c
> index 2499d7e..05047a3 100644
> --- a/drivers/acpi/video_detect.c
> +++ b/drivers/acpi/video_detect.c
> @@ -282,6 +282,15 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
>                 DMI_MATCH(DMI_PRODUCT_NAME, "530U4E/540U4E"),
>                 },
>         },
> +       /* https://bugs.launchpad.net/bugs/1894667 */
> +       {
> +        .callback = video_detect_force_video,
> +        .ident = "HP 635 Notebook",
> +        .matches = {
> +               DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
> +               DMI_MATCH(DMI_PRODUCT_NAME, "HP 635 Notebook PC"),
> +               },
> +       },
>
>         /* Non win8 machines which need native backlight nevertheless */
>         {
> --

Applied as 5.10 material, thanks!



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