Controller and control method for a controller

A controller that is a module that intervenes between an application and a device driver, relays a request from the application to the device driver, and relays a response to the request from the device driver to the application, comprising:

• a request reception unit that receives the request from the application;
• an initialization request evaluation unit that determines if a received initialization request is the first initialization request received after the application started when the received request is an initialization request;
• an initialization request processing unit that sends the first initialization request to the device driver if the initialization request evaluation unit determines that the initialization request is the first initialization request;
• an initialization settings information acquisition unit that acquires from the device driver initialization settings information describing the status of the device driver after the initialization process based on the first initialization request;
• an initialization settings information storage unit that stores the acquired initialization settings information;
• a status detection unit that detects the status of the device driver;
• a recovery process unit that executes a recovery process based on the device driver status if the status detection unit detects that an error occurred in the device driver;
• and
• a set initialization settings request unit that sends a request to the device driver to set the device driver to the state based on the stored initialization settings information when the device driver recovers from an error as a result of the recovery process.