On Thu, Jul 14, 2022 at 9:16 PM Hans de Goede <hdegoede@xxxxxxxxxx> wrote: > > 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@xxxxxxxxxxxxxx/ > Reported-and-tested-by: Ben Greening <bgreening@xxxxxxxxx> > Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx> > --- > 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 */ > -- Applied as 5.20 material, thanks!
