5.15-stable review patch. If anyone has any objections, please let me know.

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From: Mario Limonciello (AMD) superm1@kernel.org

[ Upstream commit f144bc21befdcf8e54d2f19b23b4e84f13be01f9 ]

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 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 338e1f44906a9..0ecc47e273140 100644 --- a/drivers/acpi/video_detect.c +++ b/drivers/acpi/video_detect.c @@ -635,6 +635,14 @@ static const struct dmi_system_id video_detect_dmi_table[] = { DMI_MATCH(DMI_PRODUCT_NAME, "MS-7721"), }, }, + /* 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"), + }, + }, { }, };