Man page 9 : rio_get_device

rio_get_device - Begin or continue searching for a RIO device by vid/did

struct rio_dev * rio_get_device(u16  vid , u16  did , struct rio_dev *  from );

vid
    RIO vid to match or RIO_ANY_ID to match all vids

did
    RIO did to match or RIO_ANY_ID to match all dids

from
    Previous RIO device found in search, or NULL for new search

Iterates through the list of known RIO devices. If a RIO device is found with a matching vid and did, the reference count to the device is incrememted and a pointer to its device structure is returned. Otherwise, NULL is returned. A new search is initiated by passing NULL to the from argument. Otherwise, if from is not NULL, searches continue from next device on the global list. The reference count for from is always decremented if it is not NULL.

Matt Porter <>, <>
    Author.