From: Hans de Goede hdegoede@redhat.com
[ Upstream commit 2d11eae42d52a131f06061015e49dc0f085c5bfc ]
Multiple Ideapad Z570 variants need acpi_backlight=native to force native use on these pre Windows 8 machines since acpi_video backlight control does not work here.
The original DMI quirk matches on a product_name of "102434U" but other variants may have different product_name-s such as e.g. "1024D9U".
Move to checking product_version instead as is more or less standard for Lenovo DMI quirks for similar reasons.
Signed-off-by: Hans de Goede hdegoede@redhat.com Signed-off-by: Rafael J. Wysocki rafael.j.wysocki@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/acpi/video_detect.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c index b48f85c3791e9..7f0ed845cd6ad 100644 --- a/drivers/acpi/video_detect.c +++ b/drivers/acpi/video_detect.c @@ -432,7 +432,7 @@ static const struct dmi_system_id video_detect_dmi_table[] = { /* Lenovo Ideapad Z570 */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), - DMI_MATCH(DMI_PRODUCT_NAME, "102434U"), + DMI_MATCH(DMI_PRODUCT_VERSION, "Ideapad Z570"), }, }, {