Man page 9 : __pci_register_driver

__pci_register_driver - register a new pci driver

int __pci_register_driver(struct pci_driver *  drv , struct module *  owner , const char *  mod_name );

drv
    the driver structure to register

owner
    owner module of drv

mod_name
    module name string

Adds the driver structure to the list of registered drivers. Returns a negative value on error, otherwise 0. If no error occurred, the driver remains registered even if no device was claimed during registration.