linux-kernel - [PATCH AUTOSEL 5.10 3/5] ACPI: video: Add backlight=native DMI quirk for Lenovo ThinkPad X131e (3371 AMD version)

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Message-Id: <20230702195247.1788860-3-sashal@kernel.org>
Date:   Sun,  2 Jul 2023 15:52:45 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Hans de Goede <hdegoede@...hat.com>,
        "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>,
        Sasha Levin <sashal@...nel.org>, rafael@...nel.org,
        linux-acpi@...r.kernel.org
Subject: [PATCH AUTOSEL 5.10 3/5] ACPI: video: Add backlight=native DMI quirk for Lenovo ThinkPad X131e (3371 AMD version)

From: Hans de Goede <hdegoede@...hat.com>

[ Upstream commit bd5d93df86a7ddf98a2a37e9c3751e3cb334a66c ]

Linux defaults to picking the non-working ACPI video backlight interface
on the Lenovo ThinkPad X131e (3371 AMD version).

Add a DMI quirk to pick the working native radeon_bl0 interface instead.

Signed-off-by: Hans de Goede <hdegoede@...hat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
Signed-off-by: Sasha Levin <sashal@...nel.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 872b5351f0d8f..b02d381e78483 100644
--- a/drivers/acpi/video_detect.c
+++ b/drivers/acpi/video_detect.c
@@ -332,6 +332,14 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
 		DMI_MATCH(DMI_PRODUCT_NAME, "82BK"),
 		},
 	},
+	{
+	 .callback = video_detect_force_native,
+	 /* Lenovo ThinkPad X131e (3371 AMD version) */
+	 .matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+		DMI_MATCH(DMI_PRODUCT_NAME, "3371"),
+		},
+	},
 	{
 	 .callback = video_detect_force_native,
 	 /* Apple iMac11,3 */
-- 
2.39.2