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+r1Wo0vvz4GjNQQhdkLT5p8uCHn6... 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 6615f59ab7fd..5d7f38016a24 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 */