ACPI: video: Fix Lenovo Ideapad Z570 DMI match

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>

diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c
index a8c02608dde4530ff3df98d610aba3a9927f7ecb..710ac640267dd301da56d7e504b1f3435fe91b42 100644 (file)
--- a/drivers/acpi/video_detect.c
+++ b/drivers/acpi/video_detect.c
@@ -434,7 +434,7 @@ 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"),
                },
        },
        {