From: Mario Limonciello (AMD) <superm1@kernel.org>
Date: Wed, 20 Aug 2025 17:09:26 +0000 (-0500)
Subject: ACPI: video: force native for Lenovo 82K8
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=f144bc21befdcf8e54d2f19b23b4e84f13be01f9;p=thirdparty%2Fkernel%2Fstable.git

ACPI: video: force native for Lenovo 82K8

Lenovo 82K8 has a broken brightness control provided by nvidia_wmi_ec.
Add a quirk to prevent using it.

Reported-by: Wilson Alvarez <wilson.e.alvarez@rubonnek.com>
Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/4512
Tested-by: Wilson Alvarez <wilson.e.alvarez@rubonnek.com>
Signed-off-by: Mario Limonciello (AMD) <superm1@kernel.org>
Link: https://patch.msgid.link/20250820170927.895573-1-superm1@kernel.org
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---

diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c
index d507d5e084354..4cf74f173c785 100644
--- a/drivers/acpi/video_detect.c
+++ b/drivers/acpi/video_detect.c
@@ -948,6 +948,14 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
 		DMI_MATCH(DMI_PRODUCT_NAME, "Mipad2"),
 		},
 	},
+	/* https://gitlab.freedesktop.org/drm/amd/-/issues/4512 */
+	{
+	 .callback = video_detect_force_native,
+	 .matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+		DMI_MATCH(DMI_PRODUCT_NAME, "82K8"),
+		},
+	},
 	{ },
 };