TP_NVRAM_ADDR_BRIGHTNESS 2444 drivers/platform/x86/thinkpad_acpi.c d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS); TP_NVRAM_ADDR_BRIGHTNESS 6660 drivers/platform/x86/thinkpad_acpi.c lnvram = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS) TP_NVRAM_ADDR_BRIGHTNESS 6685 drivers/platform/x86/thinkpad_acpi.c b_nvram = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS); TP_NVRAM_ADDR_BRIGHTNESS 6693 drivers/platform/x86/thinkpad_acpi.c nvram_write_byte(b_nvram, TP_NVRAM_ADDR_BRIGHTNESS);