202 static void xen_snd_drv_fini(struct xen_snd_front_info *front_info)  in xen_snd_drv_fini()  argument
204 	xen_snd_front_alsa_fini(front_info);  in xen_snd_drv_fini()
205 	xen_snd_front_evtchnl_free_all(front_info);  in xen_snd_drv_fini()
208 static int sndback_initwait(struct xen_snd_front_info *front_info)  in sndback_initwait()  argument
213 	ret = xen_snd_front_cfg_card(front_info, &num_streams);  in sndback_initwait()
218 	ret = xen_snd_front_evtchnl_create_all(front_info, num_streams);  in sndback_initwait()
222 	return xen_snd_front_evtchnl_publish_all(front_info);  in sndback_initwait()
225 static int sndback_connect(struct xen_snd_front_info *front_info)  in sndback_connect()  argument
227 	return xen_snd_front_alsa_init(front_info);  in sndback_connect()
230 static void sndback_disconnect(struct xen_snd_front_info *front_info)  in sndback_disconnect()  argument
232 	xen_snd_drv_fini(front_info);  in sndback_disconnect()
233 	xenbus_switch_state(front_info->xb_dev, XenbusStateInitialising);  in sndback_disconnect()
239 	struct xen_snd_front_info *front_info = dev_get_drvdata(&xb_dev->dev);  in sndback_changed()  local
257 		sndback_disconnect(front_info);  in sndback_changed()
262 		sndback_disconnect(front_info);  in sndback_changed()
264 		ret = sndback_initwait(front_info);  in sndback_changed()
275 		ret = sndback_connect(front_info);  in sndback_changed()
296 		sndback_disconnect(front_info);  in sndback_changed()
304 	struct xen_snd_front_info *front_info;  in xen_drv_probe()  local
306 	front_info = devm_kzalloc(&xb_dev->dev,  in xen_drv_probe()
307 				  sizeof(*front_info), GFP_KERNEL);  in xen_drv_probe()
308 	if (!front_info)  in xen_drv_probe()
311 	front_info->xb_dev = xb_dev;  in xen_drv_probe()
312 	dev_set_drvdata(&xb_dev->dev, front_info);  in xen_drv_probe()
319 	struct xen_snd_front_info *front_info = dev_get_drvdata(&dev->dev);  in xen_drv_remove()  local
335 	while ((xenbus_read_unsigned(front_info->xb_dev->otherend, "state",  in xen_drv_remove()
343 		state = xenbus_read_unsigned(front_info->xb_dev->otherend,  in xen_drv_remove()
349 	xen_snd_drv_fini(front_info);  in xen_drv_remove()