s390/scsi/zfcp_unit.c

24 	struct fc_rport *rport = unit->port->rport;
44  * zfcp_unit_queue_scsi_scan - Register configured units on port
45  * @port: The zfcp_port where to register units
47  * After opening a port, all units configured on this port have to be
53 void zfcp_unit_queue_scsi_scan(struct zfcp_port *port)
57 	read_lock_irq(&port->unit_list_lock);
58 	list_for_each_entry(unit, &port->unit_list, list) {
60 		if (scsi_queue_work(port->adapter->scsi_host,
64 	read_unlock_irq(&port->unit_list_lock);
67 static struct zfcp_unit *_zfcp_unit_find(struct zfcp_port *port, u64 fcp_lun)
71 	list_for_each_entry(unit, &port->unit_list, list)
82  * @port: zfcp_port where to look for the unit
91 struct zfcp_unit *zfcp_unit_find(struct zfcp_port *port, u64 fcp_lun)
95 	read_lock_irq(&port->unit_list_lock);
96 	unit = _zfcp_unit_find(port, fcp_lun);
97 	read_unlock_irq(&port->unit_list_lock);
109 	atomic_dec(&unit->port->units);
114  * zfcp_unit_add - add unit to unit list of a port.
115  * @port: pointer to port where unit is added
121 int zfcp_unit_add(struct zfcp_port *port, u64 fcp_lun)
127 	if (zfcp_sysfs_port_is_removing(port)) {
128 		/* port is already gone */
133 	unit = zfcp_unit_find(port, fcp_lun);
146 	unit->port = port;
148 	unit->dev.parent = &port->dev;
166 	atomic_inc(&port->units); /* under zfcp_sysfs_port_units_mutex ! */
168 	write_lock_irq(&port->unit_list_lock);
169 	list_add_tail(&unit->list, &port->unit_list);
170 	write_unlock_irq(&port->unit_list_lock);
198 	struct zfcp_port *port;
202 	port = unit->port;
203 	shost = port->adapter->scsi_host;
204 	return scsi_device_lookup(shost, 0, port->starget_id, lun);
232  * @port: The port where to remove the unit from the configuration
238 int zfcp_unit_remove(struct zfcp_port *port, u64 fcp_lun)
243 	write_lock_irq(&port->unit_list_lock);
244 	unit = _zfcp_unit_find(port, fcp_lun);
247 	write_unlock_irq(&port->unit_list_lock);