diff --git a/drivers/acpi/osi.c b/drivers/acpi/osi.c index df9328c850bd..956f7fe403a3 100644 --- a/drivers/acpi/osi.c +++ b/drivers/acpi/osi.c @@ -443,6 +443,77 @@ static const struct dmi_system_id acpi_osi_dmi_table[] __initconst = { }, }, + /* + * The following Lenovo models have a broken workaround in the + * acpi_video backlight implementation to meet the Windows 8 + * requirement of 101 backlight levels. Reverting to pre-Win8 + * behavior fixes the problem. + */ + { + .callback = dmi_disable_osi_win8, + .ident = "Lenovo ThinkPad L430", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad L430"), + }, + }, + { + .callback = dmi_disable_osi_win8, + .ident = "Lenovo ThinkPad T430", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T430"), + }, + }, + { + .callback = dmi_disable_osi_win8, + .ident = "Lenovo ThinkPad T430s", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T430s"), + }, + }, + { + .callback = dmi_disable_osi_win8, + .ident = "Lenovo ThinkPad T530", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T530"), + }, + }, + { + .callback = dmi_disable_osi_win8, + .ident = "Lenovo ThinkPad W530", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad W530"), + }, + }, + { + .callback = dmi_disable_osi_win8, + .ident = "Lenovo ThinkPad X1 Carbon", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X1 Carbon"), + }, + }, + { + .callback = dmi_disable_osi_win8, + .ident = "Lenovo ThinkPad X230", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X230"), + }, + }, + { + .callback = dmi_disable_osi_win8, + .ident = "Lenovo ThinkPad Edge E330", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad Edge E330"), + }, + }, + /* * BIOS invocation of _OSI(Linux) is almost always a BIOS bug. * Linux ignores it, except for the machines enumerated below.