[media] dvb_usb_v2: move (struct usb_data_stream) to one level up

Move stream from the frontend to adapter. There could be only
one stream per adapter. One adapter can has multiple frontends
but only one can stream at the time.
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/dvb/dvb-usb/dvb_usb.h

@@ -314,8 +314,6 @@ struct dvb_usb_fe_adapter {
 	int (*fe_init)  (struct dvb_frontend *);
 	int (*fe_sleep) (struct dvb_frontend *);
 
-	struct usb_data_stream stream;
-
 	int pid_filtering;
 	int max_feed_count;
 
@@ -325,6 +323,7 @@ struct dvb_usb_fe_adapter {
 struct dvb_usb_adapter {
 	struct dvb_usb_device *dev;
 	struct dvb_usb_adapter_properties props;
+	struct usb_data_stream stream;
 
 #define DVB_USB_ADAP_STATE_INIT 0x000
 #define DVB_USB_ADAP_STATE_DVB  0x001

drivers/media/dvb/dvb-usb/dvb_usb_dvb.c

@@ -27,7 +27,7 @@ static int dvb_usb_ctrl_feed(struct dvb_demux_feed *dvbdmxfeed, int onoff)
 	/* stop feed before setting a new pid if there will be no pid anymore */
 	if (newfeedcount == 0) {
 		deb_ts("stop feeding\n");
-		usb_urb_kill(&adap->fe_adap[adap->active_fe].stream);
+		usb_urb_kill(&adap->stream);
 
 		if (adap->props.fe[adap->active_fe].streaming_ctrl != NULL) {
 			ret = adap->props.fe[adap->active_fe].streaming_ctrl(
@@ -70,8 +70,7 @@ static int dvb_usb_ctrl_feed(struct dvb_demux_feed *dvbdmxfeed, int onoff)
 		}
 
 		deb_ts("submitting all URBs\n");
-		usb_urb_submit(&adap->fe_adap[adap->active_fe].stream,
-				&stream_props);
+		usb_urb_submit(&adap->stream, &stream_props);
 
 		deb_ts("controlling pid parser\n");
 		if (adap->props.fe[adap->active_fe].caps & DVB_USB_ADAP_HAS_PID_FILTER &&

drivers/media/dvb/dvb-usb/dvb_usb_urb.c

@@ -93,43 +93,39 @@ static void dvb_usb_data_complete_raw(struct usb_data_stream *stream,
 
 int dvb_usb_adapter_stream_init(struct dvb_usb_adapter *adap)
 {
-	int i, ret = 0;
+	int ret;
 	struct usb_data_stream_properties stream_props;
 
-	for (i = 0; i < adap->props.num_frontends; i++) {
-		adap->fe_adap[i].stream.udev      = adap->dev->udev;
-		if (adap->props.fe[i].caps & DVB_USB_ADAP_RECEIVES_204_BYTE_TS)
-			adap->fe_adap[i].stream.complete =
-				dvb_usb_data_complete_204;
-		else
-		if (adap->props.fe[i].caps & DVB_USB_ADAP_RECEIVES_RAW_PAYLOAD)
-			adap->fe_adap[i].stream.complete =
-				dvb_usb_data_complete_raw;
-		else
-		adap->fe_adap[i].stream.complete  = dvb_usb_data_complete;
-		adap->fe_adap[i].stream.user_priv = adap;
-
-		/* resolve USB stream configuration */
-		if (adap->dev->props.get_usb_stream_config) {
-			ret = adap->dev->props.get_usb_stream_config(NULL,
-					&stream_props);
-			if (ret < 0)
-				break;
-		} else {
-			stream_props = adap->props.fe[i].stream;
-		}
+	/*
+	 * FIXME: We should config demux callback for each time streaming is
+	 * started. Same for the USB data stream config.
+	 */
+
+	adap->stream.udev = adap->dev->udev;
+	if (adap->props.fe[0].caps & DVB_USB_ADAP_RECEIVES_204_BYTE_TS)
+		adap->stream.complete = dvb_usb_data_complete_204;
+	else if (adap->props.fe[0].caps & DVB_USB_ADAP_RECEIVES_RAW_PAYLOAD)
+		adap->stream.complete = dvb_usb_data_complete_raw;
+	else
+		adap->stream.complete = dvb_usb_data_complete;
 
-		ret = usb_urb_init(&adap->fe_adap[i].stream, &stream_props);
+	adap->stream.user_priv = adap;
+
+	/* resolve USB stream configuration */
+	if (adap->dev->props.get_usb_stream_config) {
+		ret = adap->dev->props.get_usb_stream_config(NULL,
+				&stream_props);
 		if (ret < 0)
-			break;
+			return ret;
+	} else {
+		stream_props = adap->props.fe[0].stream;
 	}
-	return ret;
+
+	return usb_urb_init(&adap->stream, &stream_props);
 }
 
 int dvb_usb_adapter_stream_exit(struct dvb_usb_adapter *adap)
 {
-	int i;
-	for (i = 0; i < adap->props.num_frontends; i++)
-		usb_urb_exit(&adap->fe_adap[i].stream);
+	usb_urb_exit(&adap->stream);
 	return 0;
 }