struct ccwgroup_device — ccw group device
struct ccwgroup_device {
enum state;
unsigned int count;
struct device dev;
struct work_struct ungroup_work;
struct ccw_device * cdev;
}; enum stateonline/offline state
unsigned int countnumber of attached slave devices
struct device devembedded device structure
struct work_struct ungroup_work
work to be done when a ccwgroup notifier has action
type BUS_NOTIFY_UNBIND_DRIVER
struct ccw_device * cdevvariable number of slave devices, allocated as needed