_fini() Example

The following example demonstrates the _fini() routine.

int
_fini(void)
{
    int error;
    error = mod_remove(&modlinkage);
    if (error != 0) {
        return (error);
    }
    /*
     * Cleanup resources allocated in _init()
     */
    ddi_soft_state_fini(&xxstatep);
    return (0);
}

Similarly, in _fini(), the driver should release any resources that were allocated in _init(). The driver must remove itself from the system module list.

_fini() might be called when the driver is attached to hardware instances. In this case, mod_remove(9F) returns failure. Therefore, driver resources should not be released until mod_remove() returns success.