Information processing apparatus and control method of information processing apparatus

An information processing apparatus which is shifted to a first power state and a second power state in which electric power consumption is smaller than that in the first power state, comprising:

• a shift unit configured to shift the information processing apparatus from the first power state to the second power state in the case where a shift event for shifting to the second power state occurs in the first power state;
• a return unit configured to return the information processing apparatus from the second power state to the first power state in the case where a return event for returning to the first power state occurs in the second power state;
• and
• a reservation unit configured to make a reservation for returning the information processing apparatus from the second power state to the first power state in the case where the return event occurs while the information processing apparatus is being shifted from the first power state to the second power state by the shift unit,
• wherein in the case where the return event occurs while the information processing apparatus is being shifted from the first power state to the second power state by the shift unit, the shift unit shifts the information processing apparatus to the second power state, and in the case where the reservation is made by the reservation unit, the return unit returns the information processing apparatus from the second power state to the first power state without the occurrence of the return event.