[PATCH] dvb: fix compilation errors/warnings ifndef CONFIG_MEDIA_CONTROLLER_DVB

[Hans Verkuil <hverkuil@xs4all.nl>]

This patches fixes the following compilation warnings and errors if
CONFIG_MEDIA_CONTROLLER_DVB is not defined:

drivers/media/common/siano/smsdvb-main.c: In function ‘smsdvb_media_device_unregister’:
drivers/media/common/siano/smsdvb-main.c:614:27: warning: unused variable ‘coredev’ [-Wunused-variable]
  struct smscore_device_t *coredev = client->coredev;
                           ^
drivers/media/common/siano/smsdvb-main.c: In function ‘smsdvb_hotplug’:
drivers/media/common/siano/smsdvb-main.c:1188:32: error: ‘struct smscore_device_t’ has no member named ‘media_dev’
  dvb_create_media_graph(coredev->media_dev);
                                ^
drivers/media/usb/dvb-usb/dvb-usb-dvb.c: In function ‘dvb_usb_adapter_frontend_init’:
drivers/media/usb/dvb-usb/dvb-usb-dvb.c:323:39: error: ‘struct dvb_adapter’ has no member named ‘mdev’
  dvb_create_media_graph(adap->dvb_adap.mdev);
                                       ^
drivers/media/usb/dvb-usb/dvb-usb-dvb.c: At top level:
drivers/media/usb/dvb-usb/dvb-usb-dvb.c:97:13: warning: ‘dvb_usb_media_device_register’ defined but not used [-Wunused-function]
 static void dvb_usb_media_device_register(struct dvb_usb_adapter *adap)
             ^
drivers/media/usb/dvb-usb-v2/dvb_usb_core.c: In function ‘dvb_usbv2_adapter_dvb_exit’:
drivers/media/usb/dvb-usb-v2/dvb_usb_core.c:531:25: warning: unused variable ‘d’ [-Wunused-variable]
  struct dvb_usb_device *d = adap_to_d(adap);
                         ^
drivers/media/usb/dvb-usb-v2/dvb_usb_core.c: In function ‘dvb_usbv2_adapter_frontend_init’:
drivers/media/usb/dvb-usb-v2/dvb_usb_core.c:705:39: error: ‘struct dvb_adapter’ has no member named ‘mdev’
  dvb_create_media_graph(adap->dvb_adap.mdev);
                                       ^
drivers/media/usb/dvb-usb-v2/dvb_usb_core.c: At top level:
drivers/media/usb/dvb-usb-v2/dvb_usb_core.c:403:13: warning: ‘dvb_usbv2_media_device_register’ defined but not used [-Wunused-function]
 static void dvb_usbv2_media_device_register(struct dvb_usb_adapter *adap)
             ^

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>

diff --git a/drivers/media/common/siano/smsdvb-main.c b/drivers/media/common/siano/smsdvb-main.c
index dd3c151..28f764d 100644
--- a/drivers/media/common/siano/smsdvb-main.c
+++ b/drivers/media/common/siano/smsdvb-main.c
@@ -611,9 +611,9 @@ static int smsdvb_onresponse(void *context, struct smscore_buffer_t *cb)
 
 static void smsdvb_media_device_unregister(struct smsdvb_client_t *client)
 {
+#ifdef CONFIG_MEDIA_CONTROLLER_DVB
 	struct smscore_device_t *coredev = client->coredev;
 
-#ifdef CONFIG_MEDIA_CONTROLLER_DVB
 	if (!coredev->media_dev)
 		return;
 	media_device_unregister(coredev->media_dev);
@@ -1185,7 +1185,9 @@ static int smsdvb_hotplug(struct smscore_device_t *coredev,
 	if (smsdvb_debugfs_create(client) < 0)
 		pr_info("failed to create debugfs node\n");
 
+#if defined(CONFIG_MEDIA_CONTROLLER_DVB)
 	dvb_create_media_graph(coredev->media_dev);
+#endif
 
 	pr_info("DVB interface registered.\n");
 	return 0;
diff --git a/drivers/media/usb/dvb-usb-v2/dvb_usb_core.c b/drivers/media/usb/dvb-usb-v2/dvb_usb_core.c
index 0666c8f..caf7fd9 100644
--- a/drivers/media/usb/dvb-usb-v2/dvb_usb_core.c
+++ b/drivers/media/usb/dvb-usb-v2/dvb_usb_core.c
@@ -400,9 +400,9 @@ skip_feed_stop:
 	return ret;
 }
 
+#ifdef CONFIG_MEDIA_CONTROLLER_DVB
 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;
@@ -433,8 +433,8 @@ static void dvb_usbv2_media_device_register(struct dvb_usb_adapter *adap)
 
 	dev_info(&d->udev->dev, "media controller created\n");
 
-#endif
 }
+#endif
 
 static void dvb_usbv2_media_device_unregister(struct dvb_usb_adapter *adap)
 {
@@ -528,8 +528,6 @@ err_dvb_register_adapter:
 
 static int dvb_usbv2_adapter_dvb_exit(struct dvb_usb_adapter *adap)
 {
-	struct dvb_usb_device *d = adap_to_d(adap);
-
 	dev_dbg(&adap_to_d(adap)->udev->dev, "%s: adap=%d\n", __func__,
 			adap->id);
 
@@ -702,7 +700,9 @@ static int dvb_usbv2_adapter_frontend_init(struct dvb_usb_adapter *adap)
 		}
 	}
 
+#ifdef CONFIG_MEDIA_CONTROLLER_DVB
 	dvb_create_media_graph(adap->dvb_adap.mdev);
+#endif
 
 	return 0;
 
diff --git a/drivers/media/usb/dvb-usb/dvb-usb-dvb.c b/drivers/media/usb/dvb-usb/dvb-usb-dvb.c
index a7bc453..6020f46 100644
--- a/drivers/media/usb/dvb-usb/dvb-usb-dvb.c
+++ b/drivers/media/usb/dvb-usb/dvb-usb-dvb.c
@@ -320,7 +320,9 @@ int dvb_usb_adapter_frontend_init(struct dvb_usb_adapter *adap)
 		adap->num_frontends_initialized++;
 	}
 
+#ifdef CONFIG_MEDIA_CONTROLLER_DVB
 	dvb_create_media_graph(adap->dvb_adap.mdev);
+#endif
 
 	return 0;
 }