76 scsi_dh_find_driver(struct scsi_device *sdev)  in scsi_dh_find_driver()  argument
80 	if (scsi_device_tpgs(sdev))  in scsi_dh_find_driver()
84 		if (!strncmp(sdev->vendor, b->vendor, strlen(b->vendor)) &&  in scsi_dh_find_driver()
85 		    !strncmp(sdev->model, b->model, strlen(b->model))) {  in scsi_dh_find_driver()
126 static int scsi_dh_handler_attach(struct scsi_device *sdev,  in scsi_dh_handler_attach()  argument
134 	error = scsi_dh->attach(sdev);  in scsi_dh_handler_attach()
136 		sdev_printk(KERN_ERR, sdev, "%s: Attach failed (%d)\n",  in scsi_dh_handler_attach()
140 		sdev->handler = scsi_dh;  in scsi_dh_handler_attach()
149 static void scsi_dh_handler_detach(struct scsi_device *sdev)  in scsi_dh_handler_detach()  argument
151 	sdev->handler->detach(sdev);  in scsi_dh_handler_detach()
152 	sdev_printk(KERN_NOTICE, sdev, "%s: Detached\n", sdev->handler->name);  in scsi_dh_handler_detach()
153 	module_put(sdev->handler->module);  in scsi_dh_handler_detach()
163 	struct scsi_device *sdev = to_scsi_device(dev);  in store_dh_state()  local
167 	if (sdev->sdev_state == SDEV_CANCEL ||  in store_dh_state()
168 	    sdev->sdev_state == SDEV_DEL)  in store_dh_state()
171 	if (!sdev->handler) {  in store_dh_state()
178 		err = scsi_dh_handler_attach(sdev, scsi_dh);  in store_dh_state()
184 			sdev_printk(KERN_WARNING, sdev,  in store_dh_state()
186 				    sdev->handler->name);  in store_dh_state()
192 			if (sdev->handler->activate)  in store_dh_state()
193 				err = sdev->handler->activate(sdev, NULL, NULL);  in store_dh_state()
205 	struct scsi_device *sdev = to_scsi_device(dev);  in show_dh_state()  local
207 	if (!sdev->handler)  in show_dh_state()
210 	return snprintf(buf, 20, "%s\n", sdev->handler->name);  in show_dh_state()
217 int scsi_dh_add_device(struct scsi_device *sdev)  in scsi_dh_add_device()  argument
223 	err = device_create_file(&sdev->sdev_gendev, &scsi_dh_state_attr);  in scsi_dh_add_device()
227 	drv = scsi_dh_find_driver(sdev);  in scsi_dh_add_device()
231 		err = scsi_dh_handler_attach(sdev, devinfo);  in scsi_dh_add_device()
235 void scsi_dh_release_device(struct scsi_device *sdev)  in scsi_dh_release_device()  argument
237 	if (sdev->handler)  in scsi_dh_release_device()
238 		scsi_dh_handler_detach(sdev);  in scsi_dh_release_device()
241 void scsi_dh_remove_device(struct scsi_device *sdev)  in scsi_dh_remove_device()  argument
243 	device_remove_file(&sdev->sdev_gendev, &scsi_dh_state_attr);  in scsi_dh_remove_device()
294 	struct scsi_device *sdev;  in get_sdev_from_queue()  local
298 	sdev = q->queuedata;  in get_sdev_from_queue()
299 	if (!sdev || !get_device(&sdev->sdev_gendev))  in get_sdev_from_queue()
300 		sdev = NULL;  in get_sdev_from_queue()
303 	return sdev;  in get_sdev_from_queue()
321 	struct scsi_device *sdev;  in scsi_dh_activate()  local
324 	sdev = get_sdev_from_queue(q);  in scsi_dh_activate()
325 	if (!sdev) {  in scsi_dh_activate()
331 	if (!sdev->handler)  in scsi_dh_activate()
334 	if (sdev->sdev_state == SDEV_CANCEL ||  in scsi_dh_activate()
335 	    sdev->sdev_state == SDEV_DEL)  in scsi_dh_activate()
339 	if (sdev->sdev_state == SDEV_OFFLINE)  in scsi_dh_activate()
342 	if (sdev->handler->activate)  in scsi_dh_activate()
343 		err = sdev->handler->activate(sdev, fn, data);  in scsi_dh_activate()
346 	put_device(&sdev->sdev_gendev);  in scsi_dh_activate()
368 	struct scsi_device *sdev;  in scsi_dh_set_params()  local
371 	sdev = get_sdev_from_queue(q);  in scsi_dh_set_params()
372 	if (!sdev)  in scsi_dh_set_params()
375 	if (sdev->handler && sdev->handler->set_params)  in scsi_dh_set_params()
376 		err = sdev->handler->set_params(sdev, params);  in scsi_dh_set_params()
377 	put_device(&sdev->sdev_gendev);  in scsi_dh_set_params()
390 	struct scsi_device *sdev;  in scsi_dh_attach()  local
394 	sdev = get_sdev_from_queue(q);  in scsi_dh_attach()
395 	if (!sdev)  in scsi_dh_attach()
404 	if (sdev->handler) {  in scsi_dh_attach()
405 		if (sdev->handler != scsi_dh)  in scsi_dh_attach()
410 	err = scsi_dh_handler_attach(sdev, scsi_dh);  in scsi_dh_attach()
413 	put_device(&sdev->sdev_gendev);  in scsi_dh_attach()
429 	struct scsi_device *sdev;  in scsi_dh_attached_handler_name()  local
432 	sdev = get_sdev_from_queue(q);  in scsi_dh_attached_handler_name()
433 	if (!sdev)  in scsi_dh_attached_handler_name()
436 	if (sdev->handler)  in scsi_dh_attached_handler_name()
437 		handler_name = kstrdup(sdev->handler->name, gfp);  in scsi_dh_attached_handler_name()
438 	put_device(&sdev->sdev_gendev);  in scsi_dh_attached_handler_name()