From 4de282f4913555082443ef95746a789e3df20fbe Mon Sep 17 00:00:00 2001 From: "Jiri Slaby (SUSE)" Date: Tue, 18 Apr 2023 08:42:00 +0200 Subject: [PATCH] ACPI: video: Add backlight=native DMI quirk for Lenovo Ideapad Z470 [ Upstream commit 96b709be183c56293933ef45b8b75f8af268c6de ] The Lenovo Ideapad Z470 predates Windows 8, so it defaults to using acpi_video for backlight control. But this is not functional on this model. Add a DMI quirk to use the native backlight interface which works. Link: https://bugzilla.suse.com/show_bug.cgi?id=1208724 Signed-off-by: Jiri Slaby (SUSE) Reviewed-by: Hans de Goede Signed-off-by: Rafael J. Wysocki Signed-off-by: Sasha Levin --- 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 ef40cd7f36eb..be9c70806b62 100644 --- a/drivers/acpi/video_detect.c +++ b/drivers/acpi/video_detect.c @@ -310,6 +310,15 @@ static const struct dmi_system_id video_detect_dmi_table[] = { DMI_MATCH(DMI_BOARD_NAME, "Lenovo IdeaPad S405"), }, }, + { + /* https://bugzilla.suse.com/show_bug.cgi?id=1208724 */ + .callback = video_detect_force_native, + /* Lenovo Ideapad Z470 */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "IdeaPad Z470"), + }, + }, { /* https://bugzilla.redhat.com/show_bug.cgi?id=1187004 */ .callback = video_detect_force_native,