Man page 9 : ccw_device_set_online

ccw_device_set_online - enable a ccw device for I/O

int ccw_device_set_online(struct ccw_device *  cdev );

cdev
    target ccw device

This function first enables cdev and then calls the driverAqs set_online function for cdev, if given. If set_online returns an error, cdev is disabled again.

0 on success and a negative error value on failure.

enabled, ccw device lock not held

Cornelia Huck <>
    Author.