bright_acpimode 315 drivers/platform/x86/thinkpad_acpi.c u32 bright_acpimode:1; bright_acpimode 6897 drivers/platform/x86/thinkpad_acpi.c tp_features.bright_acpimode = (bcl_levels > 0); bright_acpimode 7000 drivers/platform/x86/thinkpad_acpi.c } else if (tp_features.bright_acpimode && brightness_enable > 1) {