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    Subject[PATCH AUTOSEL 5.18 47/53] ACPI: video: Use native backlight on Dell Inspiron N4010
    Date
    From: Hans de Goede <hdegoede@redhat.com>

    [ Upstream commit 03c440a26cba6cfa540d65924e9db86fcea362b2 ]

    The Dell Inspiron N4010 does not have ACPI backlight control,
    so acpi_video_get_backlight_type()'s heuristics return vendor as
    the type to use.

    But the vendor interface is broken, where as the native (intel_backlight)
    works well, add a quirk to use native.

    Link: https://lore.kernel.org/regressions/CALF=6jEe5G8+r1Wo0vvz4GjNQQhdkLT5p8uCHn6ZXhg4nsOWow@mail.gmail.com/
    Reported-and-tested-by: Ben Greening <bgreening@gmail.com>
    Signed-off-by: Hans de Goede <hdegoede@redhat.com>
    Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    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 becc198e4c22..4099140bbd5f 100644
    --- a/drivers/acpi/video_detect.c
    +++ b/drivers/acpi/video_detect.c
    @@ -347,6 +347,14 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
    DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro12,1"),
    },
    },
    + {
    + .callback = video_detect_force_native,
    + /* Dell Inspiron N4010 */
    + .matches = {
    + DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
    + DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron N4010"),
    + },
    + },
    {
    .callback = video_detect_force_native,
    /* Dell Vostro V131 */
    --
    2.35.1
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