drivers/scsi/scsi_dh.c

3  * SCSI device handler infrastructure.
120  * scsi_dh_handler_attach - Attach a device handler to a device
121  * @sdev - SCSI device the device handler should attach to
122  * @scsi_dh - The device handler to attach
154 		sdev->handler = scsi_dh;
160  * scsi_dh_handler_detach - Detach a device handler from a device
161  * @sdev - SCSI device the device handler should be detached from
165 	sdev->handler->detach(sdev);
166 	sdev_printk(KERN_NOTICE, sdev, "%s: Detached\n", sdev->handler->name);
167 	module_put(sdev->handler->module);
188 	if (sdev->handler)
193  * scsi_register_device_handler - register a device handler personality
195  * @scsi_dh - device handler to be registered.
197  * Returns 0 on success, -EBUSY if handler already registered.
211 	printk(KERN_INFO "%s: device handler registered\n", scsi_dh->name);
218  * scsi_unregister_device_handler - register a device handler personality
220  * @scsi_dh - device handler to be unregistered.
222  * Returns 0 on success, -ENODEV if handler not registered.
232 	printk(KERN_INFO "%s: device handler unregistered\n", scsi_dh->name);
263 	if (!sdev->handler)
274 	if (sdev->handler->activate)
275 		err = sdev->handler->activate(sdev, fn, data);
307 	if (sdev->handler && sdev->handler->set_params)
308 		err = sdev->handler->set_params(sdev, params);
315  * scsi_dh_attach - Attach device handler
317  *      the handler should be attached to
318  * @name - name of the handler to attach
336 	if (sdev->handler) {
337 		if (sdev->handler != scsi_dh)
351  * scsi_dh_attached_handler_name - Get attached device handler's name
353  *      that may have a device handler attached
356  * Returns name of attached handler, NULL if no handler is attached.
368 	if (sdev->handler)
369 		handler_name = kstrdup(sdev->handler->name, gfp);