linux-kernel - [PATCH] ACPI: video: Add backlight=native DMI quirk for Dell Vostro 15 3535

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Message-Id: <20230302093300.62098-1-acelan.kao@canonical.com>
Date:   Thu,  2 Mar 2023 17:33:00 +0800
From:   AceLan Kao <acelan.kao@...onical.com>
To:     "Rafael J. Wysocki" <rafael@...nel.org>,
        Len Brown <lenb@...nel.org>, linux-acpi@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] ACPI: video: Add backlight=native DMI quirk for Dell Vostro 15 3535

From: "Chia-Lin Kao (AceLan)" <acelan.kao@...onical.com>

Sometimes the system boots up with a acpi_video0 backlight interface
which doesn't work. So add Dell Vostro 15 3535 into the
video_detect_dmi_table to set it to native explicitly.

Signed-off-by: Chia-Lin Kao (AceLan) <acelan.kao@...onical.com>
---
 drivers/acpi/video_detect.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c
index 710ac640267d..14d6d81e536f 100644
--- a/drivers/acpi/video_detect.c
+++ b/drivers/acpi/video_detect.c
@@ -716,6 +716,13 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
 		DMI_MATCH(DMI_PRODUCT_NAME, "Dell G15 5515"),
 		},
 	},
+	{
+	 .callback = video_detect_force_native,
+	 .matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+		DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 15 3535"),
+		},
+	},
 
 	/*
 	 * Desktops which falsely report a backlight and which our heuristics
-- 
2.34.1