--- zzzz-none-000/linux-3.10.107/drivers/media/usb/dvb-usb-v2/dvb_usb_core.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/media/usb/dvb-usb-v2/dvb_usb_core.c	2021-02-04 17:41:59.000000000 +0000
@@ -21,7 +21,7 @@
 
 #include "dvb_usb_common.h"
 
-int dvb_usbv2_disable_rc_polling;
+static int dvb_usbv2_disable_rc_polling;
 module_param_named(disable_rc_polling, dvb_usbv2_disable_rc_polling, int, 0644);
 MODULE_PARM_DESC(disable_rc_polling,
 		"disable remote control polling (default: 0)");
@@ -164,7 +164,7 @@
 	dev->driver_name = (char *) d->props->driver_name;
 	dev->map_name = d->rc.map_name;
 	dev->driver_type = d->rc.driver_type;
-	dev->allowed_protos = d->rc.allowed_protos;
+	dev->allowed_protocols = d->rc.allowed_protos;
 	dev->change_protocol = d->rc.change_protocol;
 	dev->priv = d;
 
@@ -253,13 +253,6 @@
 	return usb_urb_exitv2(&adap->stream);
 }
 
-static int wait_schedule(void *ptr)
-{
-	schedule();
-
-	return 0;
-}
-
 static int dvb_usb_start_feed(struct dvb_demux_feed *dvbdmxfeed)
 {
 	struct dvb_usb_adapter *adap = dvbdmxfeed->demux->priv;
@@ -273,8 +266,7 @@
 			dvbdmxfeed->pid, dvbdmxfeed->index);
 
 	/* wait init is done */
-	wait_on_bit(&adap->state_bits, ADAP_INIT, wait_schedule,
-			TASK_UNINTERRUPTIBLE);
+	wait_on_bit(&adap->state_bits, ADAP_INIT, TASK_UNINTERRUPTIBLE);
 
 	if (adap->active_fe == -1)
 		return -EINVAL;
@@ -399,7 +391,7 @@
 
 	/* clear 'streaming' status bit */
 	clear_bit(ADAP_STREAMING, &adap->state_bits);
-	smp_mb__after_clear_bit();
+	smp_mb__after_atomic();
 	wake_up_bit(&adap->state_bits, ADAP_STREAMING);
 skip_feed_stop:
 
@@ -408,10 +400,61 @@
 	return ret;
 }
 
+static void dvb_usbv2_media_device_register(struct dvb_usb_adapter *adap)
+{
+#ifdef CONFIG_MEDIA_CONTROLLER_DVB
+	struct media_device *mdev;
+	struct dvb_usb_device *d = adap_to_d(adap);
+	struct usb_device *udev = d->udev;
+	int ret;
+
+	mdev = kzalloc(sizeof(*mdev), GFP_KERNEL);
+	if (!mdev)
+		return;
+
+	mdev->dev = &udev->dev;
+	strlcpy(mdev->model, d->name, sizeof(mdev->model));
+	if (udev->serial)
+		strlcpy(mdev->serial, udev->serial, sizeof(mdev->serial));
+	strcpy(mdev->bus_info, udev->devpath);
+	mdev->hw_revision = le16_to_cpu(udev->descriptor.bcdDevice);
+	mdev->driver_version = LINUX_VERSION_CODE;
+
+	ret = media_device_register(mdev);
+	if (ret) {
+		dev_err(&d->udev->dev,
+			"Couldn't create a media device. Error: %d\n",
+			ret);
+		kfree(mdev);
+		return;
+	}
+
+	dvb_register_media_controller(&adap->dvb_adap, mdev);
+
+	dev_info(&d->udev->dev, "media controller created\n");
+
+#endif
+}
+
+static void dvb_usbv2_media_device_unregister(struct dvb_usb_adapter *adap)
+{
+#ifdef CONFIG_MEDIA_CONTROLLER_DVB
+
+	if (!adap->dvb_adap.mdev)
+		return;
+
+	media_device_unregister(adap->dvb_adap.mdev);
+	kfree(adap->dvb_adap.mdev);
+	adap->dvb_adap.mdev = NULL;
+
+#endif
+}
+
 static int dvb_usbv2_adapter_dvb_init(struct dvb_usb_adapter *adap)
 {
 	int ret;
 	struct dvb_usb_device *d = adap_to_d(adap);
+
 	dev_dbg(&d->udev->dev, "%s: adap=%d\n", __func__, adap->id);
 
 	ret = dvb_register_adapter(&adap->dvb_adap, d->name, d->props->owner,
@@ -424,6 +467,8 @@
 
 	adap->dvb_adap.priv = adap;
 
+	dvb_usbv2_media_device_register(adap);
+
 	if (d->props->read_mac_address) {
 		ret = d->props->read_mac_address(adap,
 				adap->dvb_adap.proposed_mac);
@@ -472,6 +517,7 @@
 err_dvb_dmxdev_init:
 	dvb_dmx_release(&adap->demux);
 err_dvb_dmx_init:
+	dvb_usbv2_media_device_unregister(adap);
 	dvb_unregister_adapter(&adap->dvb_adap);
 err_dvb_register_adapter:
 	adap->dvb_adap.priv = NULL;
@@ -488,6 +534,7 @@
 		adap->demux.dmx.close(&adap->demux.dmx);
 		dvb_dmxdev_release(&adap->dmxdev);
 		dvb_dmx_release(&adap->demux);
+		dvb_usbv2_media_device_unregister(adap);
 		dvb_unregister_adapter(&adap->dvb_adap);
 	}
 
@@ -550,7 +597,7 @@
 err:
 	if (!adap->suspend_resume_active) {
 		clear_bit(ADAP_INIT, &adap->state_bits);
-		smp_mb__after_clear_bit();
+		smp_mb__after_atomic();
 		wake_up_bit(&adap->state_bits, ADAP_INIT);
 	}
 
@@ -568,7 +615,7 @@
 
 	if (!adap->suspend_resume_active) {
 		set_bit(ADAP_SLEEP, &adap->state_bits);
-		wait_on_bit(&adap->state_bits, ADAP_STREAMING, wait_schedule,
+		wait_on_bit(&adap->state_bits, ADAP_STREAMING,
 				TASK_UNINTERRUPTIBLE);
 	}
 
@@ -591,7 +638,7 @@
 	if (!adap->suspend_resume_active) {
 		adap->active_fe = -1;
 		clear_bit(ADAP_SLEEP, &adap->state_bits);
-		smp_mb__after_clear_bit();
+		smp_mb__after_atomic();
 		wake_up_bit(&adap->state_bits, ADAP_SLEEP);
 	}
 
@@ -651,6 +698,8 @@
 		}
 	}
 
+	dvb_create_media_graph(&adap->dvb_adap);
+
 	return 0;
 
 err_dvb_unregister_frontend:
@@ -672,9 +721,10 @@
 
 static int dvb_usbv2_adapter_frontend_exit(struct dvb_usb_adapter *adap)
 {
-	int i;
-	dev_dbg(&adap_to_d(adap)->udev->dev, "%s: adap=%d\n", __func__,
-			adap->id);
+	int ret, i;
+	struct dvb_usb_device *d = adap_to_d(adap);
+
+	dev_dbg(&d->udev->dev, "%s: adap=%d\n", __func__, adap->id);
 
 	for (i = MAX_NO_OF_FE_PER_ADAP - 1; i >= 0; i--) {
 		if (adap->fe[i]) {
@@ -683,6 +733,23 @@
 		}
 	}
 
+	if (d->props->tuner_detach) {
+		ret = d->props->tuner_detach(adap);
+		if (ret < 0) {
+			dev_dbg(&d->udev->dev, "%s: tuner_detach() failed=%d\n",
+					__func__, ret);
+		}
+	}
+
+	if (d->props->frontend_detach) {
+		ret = d->props->frontend_detach(adap);
+		if (ret < 0) {
+			dev_dbg(&d->udev->dev,
+					"%s: frontend_detach() failed=%d\n",
+					__func__, ret);
+		}
+	}
+
 	return 0;
 }
 
@@ -770,9 +837,9 @@
 
 	for (i = MAX_NO_OF_ADAPTER_PER_DEVICE - 1; i >= 0; i--) {
 		if (d->adapter[i].props) {
-			dvb_usbv2_adapter_frontend_exit(&d->adapter[i]);
 			dvb_usbv2_adapter_dvb_exit(&d->adapter[i]);
 			dvb_usbv2_adapter_stream_exit(&d->adapter[i]);
+			dvb_usbv2_adapter_frontend_exit(&d->adapter[i]);
 		}
 	}
 
@@ -833,20 +900,45 @@
 	return ret;
 }
 
-/*
- * udev, which is used for the firmware downloading, requires we cannot
- * block during module_init(). module_init() calls USB probe() which
- * is this routine. Due to that we delay actual operation using workqueue
- * and return always success here.
- */
-static void dvb_usbv2_init_work(struct work_struct *work)
+int dvb_usbv2_probe(struct usb_interface *intf,
+		const struct usb_device_id *id)
 {
 	int ret;
-	struct dvb_usb_device *d =
-			container_of(work, struct dvb_usb_device, probe_work);
+	struct dvb_usb_device *d;
+	struct usb_device *udev = interface_to_usbdev(intf);
+	struct dvb_usb_driver_info *driver_info =
+			(struct dvb_usb_driver_info *) id->driver_info;
+
+	dev_dbg(&udev->dev, "%s: bInterfaceNumber=%d\n", __func__,
+			intf->cur_altsetting->desc.bInterfaceNumber);
+
+	if (!id->driver_info) {
+		dev_err(&udev->dev, "%s: driver_info failed\n", KBUILD_MODNAME);
+		ret = -ENODEV;
+		goto err;
+	}
 
-	d->work_pid = current->pid;
-	dev_dbg(&d->udev->dev, "%s: work_pid=%d\n", __func__, d->work_pid);
+	d = kzalloc(sizeof(struct dvb_usb_device), GFP_KERNEL);
+	if (!d) {
+		dev_err(&udev->dev, "%s: kzalloc() failed\n", KBUILD_MODNAME);
+		ret = -ENOMEM;
+		goto err;
+	}
+
+	d->intf = intf;
+	d->name = driver_info->name;
+	d->rc_map = driver_info->rc_map;
+	d->udev = udev;
+	d->props = driver_info->props;
+
+	if (intf->cur_altsetting->desc.bInterfaceNumber !=
+			d->props->bInterfaceNumber) {
+		ret = -ENODEV;
+		goto err_free_all;
+	}
+
+	mutex_init(&d->usb_mutex);
+	mutex_init(&d->i2c_mutex);
 
 	if (d->props->size_of_priv) {
 		d->priv = kzalloc(d->props->size_of_priv, GFP_KERNEL);
@@ -854,7 +946,7 @@
 			dev_err(&d->udev->dev, "%s: kzalloc() failed\n",
 					KBUILD_MODNAME);
 			ret = -ENOMEM;
-			goto err_usb_driver_release_interface;
+			goto err_free_all;
 		}
 	}
 
@@ -884,20 +976,12 @@
 				 * device. As 'new' device is warm we should
 				 * never go here again.
 				 */
-				return;
+				goto exit;
 			} else {
-				/*
-				 * Unexpected error. We must unregister driver
-				 * manually from the device, because device is
-				 * already register by returning from probe()
-				 * with success. usb_driver_release_interface()
-				 * finally calls disconnect() in order to free
-				 * resources.
-				 */
-				goto err_usb_driver_release_interface;
+				goto err_free_all;
 			}
 		} else {
-			goto err_usb_driver_release_interface;
+			goto err_free_all;
 		}
 	}
 
@@ -906,73 +990,17 @@
 
 	ret = dvb_usbv2_init(d);
 	if (ret < 0)
-		goto err_usb_driver_release_interface;
+		goto err_free_all;
 
 	dev_info(&d->udev->dev,
 			"%s: '%s' successfully initialized and connected\n",
 			KBUILD_MODNAME, d->name);
-
-	return;
-err_usb_driver_release_interface:
-	dev_info(&d->udev->dev, "%s: '%s' error while loading driver (%d)\n",
-			KBUILD_MODNAME, d->name, ret);
-	usb_driver_release_interface(to_usb_driver(d->intf->dev.driver),
-			d->intf);
-	dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
-	return;
-}
-
-int dvb_usbv2_probe(struct usb_interface *intf,
-		const struct usb_device_id *id)
-{
-	int ret;
-	struct dvb_usb_device *d;
-	struct usb_device *udev = interface_to_usbdev(intf);
-	struct dvb_usb_driver_info *driver_info =
-			(struct dvb_usb_driver_info *) id->driver_info;
-
-	dev_dbg(&udev->dev, "%s: bInterfaceNumber=%d\n", __func__,
-			intf->cur_altsetting->desc.bInterfaceNumber);
-
-	if (!id->driver_info) {
-		dev_err(&udev->dev, "%s: driver_info failed\n", KBUILD_MODNAME);
-		ret = -ENODEV;
-		goto err;
-	}
-
-	d = kzalloc(sizeof(struct dvb_usb_device), GFP_KERNEL);
-	if (!d) {
-		dev_err(&udev->dev, "%s: kzalloc() failed\n", KBUILD_MODNAME);
-		ret = -ENOMEM;
-		goto err;
-	}
-
-	d->name = driver_info->name;
-	d->rc_map = driver_info->rc_map;
-	d->udev = udev;
-	d->intf = intf;
-	d->props = driver_info->props;
-
-	if (d->intf->cur_altsetting->desc.bInterfaceNumber !=
-			d->props->bInterfaceNumber) {
-		ret = -ENODEV;
-		goto err_kfree;
-	}
-
-	mutex_init(&d->usb_mutex);
-	mutex_init(&d->i2c_mutex);
-	INIT_WORK(&d->probe_work, dvb_usbv2_init_work);
+exit:
 	usb_set_intfdata(intf, d);
-	ret = schedule_work(&d->probe_work);
-	if (ret < 0) {
-		dev_err(&d->udev->dev, "%s: schedule_work() failed\n",
-				KBUILD_MODNAME);
-		goto err_kfree;
-	}
 
 	return 0;
-err_kfree:
-	kfree(d);
+err_free_all:
+	dvb_usbv2_exit(d);
 err:
 	dev_dbg(&udev->dev, "%s: failed=%d\n", __func__, ret);
 	return ret;
@@ -984,12 +1012,9 @@
 	struct dvb_usb_device *d = usb_get_intfdata(intf);
 	const char *name = d->name;
 	struct device dev = d->udev->dev;
-	dev_dbg(&d->udev->dev, "%s: pid=%d work_pid=%d\n", __func__,
-			current->pid, d->work_pid);
 
-	/* ensure initialization work is finished until release resources */
-	if (d->work_pid != current->pid)
-		cancel_work_sync(&d->probe_work);
+	dev_dbg(&d->udev->dev, "%s: bInterfaceNumber=%d\n", __func__,
+			intf->cur_altsetting->desc.bInterfaceNumber);
 
 	if (d->props->exit)
 		d->props->exit(d);