lght             5531 drivers/platform/x86/thinkpad_acpi.c TPACPI_HANDLE(lght, root, "\\LGHT");	/* A21e, A2xm/p, T20-22, X20-21 */
lght             5595 drivers/platform/x86/thinkpad_acpi.c 		TPACPI_ACPIHANDLE_INIT(lght);