55 device_handler_match_function(struct scsi_device *sdev)  in device_handler_match_function()  argument
61 		if (tmp_dh->match && tmp_dh->match(sdev)) {  in device_handler_match_function()
81 		     struct scsi_device *sdev)  in device_handler_match()  argument
85 	found_dh = device_handler_match_function(sdev);  in device_handler_match()
98 static int scsi_dh_handler_attach(struct scsi_device *sdev,  in scsi_dh_handler_attach()  argument
103 	if (sdev->scsi_dh_data) {  in scsi_dh_handler_attach()
104 		if (sdev->scsi_dh_data->scsi_dh != scsi_dh)  in scsi_dh_handler_attach()
107 		kref_get(&sdev->scsi_dh_data->kref);  in scsi_dh_handler_attach()
114 	d = scsi_dh->attach(sdev);  in scsi_dh_handler_attach()
116 		sdev_printk(KERN_ERR, sdev, "%s: Attach failed (%ld)\n",  in scsi_dh_handler_attach()
124 	d->sdev = sdev;  in scsi_dh_handler_attach()
126 	spin_lock_irq(sdev->request_queue->queue_lock);  in scsi_dh_handler_attach()
127 	sdev->scsi_dh_data = d;  in scsi_dh_handler_attach()
128 	spin_unlock_irq(sdev->request_queue->queue_lock);  in scsi_dh_handler_attach()
137 	struct scsi_device *sdev = scsi_dh_data->sdev;  in __detach_handler()  local
139 	scsi_dh->detach(sdev);  in __detach_handler()
141 	spin_lock_irq(sdev->request_queue->queue_lock);  in __detach_handler()
142 	sdev->scsi_dh_data = NULL;  in __detach_handler()
143 	spin_unlock_irq(sdev->request_queue->queue_lock);  in __detach_handler()
145 	sdev_printk(KERN_NOTICE, sdev, "%s: Detached\n", scsi_dh->name);  in __detach_handler()
157 static void scsi_dh_handler_detach(struct scsi_device *sdev,  in scsi_dh_handler_detach()  argument
160 	if (!sdev->scsi_dh_data)  in scsi_dh_handler_detach()
163 	if (scsi_dh && scsi_dh != sdev->scsi_dh_data->scsi_dh)  in scsi_dh_handler_detach()
167 		scsi_dh = sdev->scsi_dh_data->scsi_dh;  in scsi_dh_handler_detach()
170 		kref_put(&sdev->scsi_dh_data->kref, __detach_handler);  in scsi_dh_handler_detach()
180 	struct scsi_device *sdev = to_scsi_device(dev);  in store_dh_state()  local
184 	if (sdev->sdev_state == SDEV_CANCEL ||  in store_dh_state()
185 	    sdev->sdev_state == SDEV_DEL)  in store_dh_state()
188 	if (!sdev->scsi_dh_data) {  in store_dh_state()
194 		err = scsi_dh_handler_attach(sdev, scsi_dh);  in store_dh_state()
196 		scsi_dh = sdev->scsi_dh_data->scsi_dh;  in store_dh_state()
201 			scsi_dh_handler_detach(sdev, scsi_dh);  in store_dh_state()
208 				err = scsi_dh->activate(sdev, NULL, NULL);  in store_dh_state()
220 	struct scsi_device *sdev = to_scsi_device(dev);  in show_dh_state()  local
222 	if (!sdev->scsi_dh_data)  in show_dh_state()
225 	return snprintf(buf, 20, "%s\n", sdev->scsi_dh_data->scsi_dh->name);  in show_dh_state()
237 	struct scsi_device *sdev;  in scsi_dh_sysfs_attr_add()  local
243 	sdev = to_scsi_device(dev);  in scsi_dh_sysfs_attr_add()
245 	err = device_create_file(&sdev->sdev_gendev,  in scsi_dh_sysfs_attr_add()
256 	struct scsi_device *sdev;  in scsi_dh_sysfs_attr_remove()  local
261 	sdev = to_scsi_device(dev);  in scsi_dh_sysfs_attr_remove()
263 	device_remove_file(&sdev->sdev_gendev,  in scsi_dh_sysfs_attr_remove()
276 	struct scsi_device *sdev;  in scsi_dh_notifier()  local
283 	sdev = to_scsi_device(dev);  in scsi_dh_notifier()
288 		devinfo = device_handler_match(NULL, sdev);  in scsi_dh_notifier()
290 			err = scsi_dh_handler_attach(sdev, devinfo);  in scsi_dh_notifier()
293 		scsi_dh_handler_detach(sdev, NULL);  in scsi_dh_notifier()
304 	struct scsi_device *sdev;  in scsi_dh_notifier_add()  local
312 	sdev = to_scsi_device(dev);  in scsi_dh_notifier_add()
314 	if (device_handler_match(scsi_dh, sdev))  in scsi_dh_notifier_add()
315 		scsi_dh_handler_attach(sdev, scsi_dh);  in scsi_dh_notifier_add()
328 	struct scsi_device *sdev;  in scsi_dh_notifier_remove()  local
336 	sdev = to_scsi_device(dev);  in scsi_dh_notifier_remove()
338 	scsi_dh_handler_detach(sdev, scsi_dh);  in scsi_dh_notifier_remove()
414 	struct scsi_device *sdev;  in scsi_dh_activate()  local
419 	sdev = q->queuedata;  in scsi_dh_activate()
420 	if (!sdev) {  in scsi_dh_activate()
428 	if (sdev->scsi_dh_data)  in scsi_dh_activate()
429 		scsi_dh = sdev->scsi_dh_data->scsi_dh;  in scsi_dh_activate()
430 	dev = get_device(&sdev->sdev_gendev);  in scsi_dh_activate()
432 	    sdev->sdev_state == SDEV_CANCEL ||  in scsi_dh_activate()
433 	    sdev->sdev_state == SDEV_DEL)  in scsi_dh_activate()
435 	if (sdev->sdev_state == SDEV_OFFLINE)  in scsi_dh_activate()
446 		err = scsi_dh->activate(sdev, fn, data);  in scsi_dh_activate()
467 	struct scsi_device *sdev;  in scsi_dh_set_params()  local
471 	sdev = q->queuedata;  in scsi_dh_set_params()
472 	if (sdev && sdev->scsi_dh_data)  in scsi_dh_set_params()
473 		scsi_dh = sdev->scsi_dh_data->scsi_dh;  in scsi_dh_set_params()
474 	if (scsi_dh && scsi_dh->set_params && get_device(&sdev->sdev_gendev))  in scsi_dh_set_params()
480 	err = scsi_dh->set_params(sdev, params);  in scsi_dh_set_params()
481 	put_device(&sdev->sdev_gendev);  in scsi_dh_set_params()
506 	struct scsi_device *sdev;  in scsi_dh_attach()  local
515 	sdev = q->queuedata;  in scsi_dh_attach()
516 	if (!sdev || !get_device(&sdev->sdev_gendev))  in scsi_dh_attach()
521 		err = scsi_dh_handler_attach(sdev, scsi_dh);  in scsi_dh_attach()
522 		put_device(&sdev->sdev_gendev);  in scsi_dh_attach()
540 	struct scsi_device *sdev;  in scsi_dh_detach()  local
544 	sdev = q->queuedata;  in scsi_dh_detach()
545 	if (!sdev || !get_device(&sdev->sdev_gendev))  in scsi_dh_detach()
546 		sdev = NULL;  in scsi_dh_detach()
549 	if (!sdev)  in scsi_dh_detach()
552 	if (sdev->scsi_dh_data) {  in scsi_dh_detach()
553 		scsi_dh = sdev->scsi_dh_data->scsi_dh;  in scsi_dh_detach()
554 		scsi_dh_handler_detach(sdev, scsi_dh);  in scsi_dh_detach()
556 	put_device(&sdev->sdev_gendev);  in scsi_dh_detach()
572 	struct scsi_device *sdev;  in scsi_dh_attached_handler_name()  local
576 	sdev = q->queuedata;  in scsi_dh_attached_handler_name()
577 	if (!sdev || !get_device(&sdev->sdev_gendev))  in scsi_dh_attached_handler_name()
578 		sdev = NULL;  in scsi_dh_attached_handler_name()
581 	if (!sdev)  in scsi_dh_attached_handler_name()
584 	if (sdev->scsi_dh_data)  in scsi_dh_attached_handler_name()
585 		handler_name = kstrdup(sdev->scsi_dh_data->scsi_dh->name, gfp);  in scsi_dh_attached_handler_name()
587 	put_device(&sdev->sdev_gendev);  in scsi_dh_attached_handler_name()