s390/scsi/zfcp_ccw.c

23 	struct zfcp_adapter *adapter;
27 	adapter = dev_get_drvdata(&cdev->dev);
28 	if (adapter)
29 		kref_get(&adapter->ref);
31 	return adapter;
34 void zfcp_ccw_adapter_put(struct zfcp_adapter *adapter)
39 	kref_put(&adapter->ref, zfcp_adapter_release);
44  * zfcp_ccw_activate - activate adapter and wait for it to finish
51 	struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
53 	if (!adapter)
56 	zfcp_erp_clear_adapter_status(adapter, clear);
57 	zfcp_erp_set_adapter_status(adapter, ZFCP_STATUS_COMMON_RUNNING);
58 	zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED,
74 	zfcp_erp_wait(adapter);
75 	flush_delayed_work(&adapter->scan_work);
77 	zfcp_ccw_adapter_put(adapter);
95  * work: To only allocate adapter resources for devices actually used,
107  * This function gets called by the common i/o layer and removes an adapter
109  * ports that belong to this adapter. And in addition all resources of this
110  * adapter will be freed too.
114 	struct zfcp_adapter *adapter;
122 	adapter = zfcp_ccw_adapter_by_cdev(cdev);
123 	if (!adapter)
126 	write_lock_irq(&adapter->port_list_lock);
127 	list_for_each_entry(port, &adapter->port_list, list) {
132 	list_splice_init(&adapter->port_list, &port_remove_lh);
133 	write_unlock_irq(&adapter->port_list_lock);
134 	zfcp_ccw_adapter_put(adapter); /* put from zfcp_ccw_adapter_by_cdev */
142 	zfcp_adapter_unregister(adapter);
150  * adapter into state online.  The first call will allocate all
151  * adapter resources that will be retained until the device is removed
156  * adapter will be opened.
160 	struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
162 	if (!adapter) {
163 		adapter = zfcp_adapter_enqueue(cdev);
165 		if (IS_ERR(adapter)) {
168 				"FCP adapter failed\n");
169 			return PTR_ERR(adapter);
171 		kref_get(&adapter->ref);
175 	BUG_ON(!zfcp_reqlist_isempty(adapter->req_list));
176 	adapter->req_no = 0;
190 	zfcp_fc_inverse_conditional_port_scan(adapter);
191 	flush_delayed_work(&adapter->scan_work);
192 	zfcp_ccw_adapter_put(adapter);
200  * This function gets called by the common i/o layer and sets an adapter
205 	struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
207 	if (!adapter)
210 	zfcp_erp_set_adapter_status(adapter, 0);
211 	zfcp_erp_adapter_shutdown(adapter, 0, "ccsoff1");
212 	zfcp_erp_wait(adapter);
214 	zfcp_ccw_adapter_put(adapter);
221  * @event: indicates if adapter was detached or attached
223  * This function gets called by the common i/o layer if an adapter has gone
228 	struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
230 	if (!adapter)
236 		zfcp_erp_adapter_shutdown(adapter, 0, "ccnoti1");
241 		zfcp_erp_adapter_shutdown(adapter, 0, "ccnoti2");
245 		zfcp_erp_set_adapter_status(adapter,
247 		zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED,
253 		zfcp_erp_adapter_shutdown(adapter, 0, "ccnoti5");
257 	zfcp_ccw_adapter_put(adapter);
263  * @cdev: device for adapter to shutdown.
267 	struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
269 	if (!adapter)
272 	zfcp_erp_adapter_shutdown(adapter, 0, "ccshut1");
273 	zfcp_erp_wait(adapter);
274 	zfcp_erp_thread_kill(adapter);
276 	zfcp_ccw_adapter_put(adapter);