TP_ACPI_HKEY_BRGHTDWN_MASK 1964 drivers/platform/x86/thinkpad_acpi.c TP_ACPI_HKEY_BRGHTDWN_MASK, TP_ACPI_HKEY_BRGHTDWN_MASK 7068 drivers/platform/x86/thinkpad_acpi.c | TP_ACPI_HKEY_BRGHTDWN_MASK);