203 static void xen_snd_drv_fini(struct xen_snd_front_info *front_info)  in xen_snd_drv_fini()  argument
205 	xen_snd_front_alsa_fini(front_info);  in xen_snd_drv_fini()
206 	xen_snd_front_evtchnl_free_all(front_info);  in xen_snd_drv_fini()
209 static int sndback_initwait(struct xen_snd_front_info *front_info)  in sndback_initwait()  argument
214 	ret = xen_snd_front_cfg_card(front_info, &num_streams);  in sndback_initwait()
219 	ret = xen_snd_front_evtchnl_create_all(front_info, num_streams);  in sndback_initwait()
223 	return xen_snd_front_evtchnl_publish_all(front_info);  in sndback_initwait()
226 static int sndback_connect(struct xen_snd_front_info *front_info)  in sndback_connect()  argument
228 	return xen_snd_front_alsa_init(front_info);  in sndback_connect()
231 static void sndback_disconnect(struct xen_snd_front_info *front_info)  in sndback_disconnect()  argument
233 	xen_snd_drv_fini(front_info);  in sndback_disconnect()
234 	xenbus_switch_state(front_info->xb_dev, XenbusStateInitialising);  in sndback_disconnect()
240 	struct xen_snd_front_info *front_info = dev_get_drvdata(&xb_dev->dev);  in sndback_changed()  local
255 		sndback_disconnect(front_info);  in sndback_changed()
260 		sndback_disconnect(front_info);  in sndback_changed()
262 		ret = sndback_initwait(front_info);  in sndback_changed()
273 		ret = sndback_connect(front_info);  in sndback_changed()
293 		sndback_disconnect(front_info);  in sndback_changed()
301 	struct xen_snd_front_info *front_info;  in xen_drv_probe()  local
303 	front_info = devm_kzalloc(&xb_dev->dev,  in xen_drv_probe()
304 				  sizeof(*front_info), GFP_KERNEL);  in xen_drv_probe()
305 	if (!front_info)  in xen_drv_probe()
308 	front_info->xb_dev = xb_dev;  in xen_drv_probe()
309 	dev_set_drvdata(&xb_dev->dev, front_info);  in xen_drv_probe()
316 	struct xen_snd_front_info *front_info = dev_get_drvdata(&dev->dev);  in xen_drv_remove()  local
332 	while ((xenbus_read_unsigned(front_info->xb_dev->otherend, "state",  in xen_drv_remove()
340 		state = xenbus_read_unsigned(front_info->xb_dev->otherend,  in xen_drv_remove()
346 	xen_snd_drv_fini(front_info);  in xen_drv_remove()