NVBIOS_THERM_FAN_LINEAR
fan->fan_mode = NVBIOS_THERM_FAN_LINEAR;
if (fan->fan_mode > NVBIOS_THERM_FAN_LINEAR)
fan->fan_mode = NVBIOS_THERM_FAN_LINEAR;
fan->fan_mode = NVBIOS_THERM_FAN_LINEAR;
case NVBIOS_THERM_FAN_LINEAR: