[media] dvb-usb: create one media_dev per adapter

Instead of assuming just one adapter, change the code to store
one media controller per adapter.

This works fine for dvb-usb, as, on all drivers here, it is not
possible to write a media graph that would mix resources between
the two different adapters.

Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

diff --git a/drivers/media/usb/dvb-usb/dvb-usb-dvb.c b/drivers/media/usb/dvb-usb/dvb-usb-dvb.c
index d0b0f30..a7bc453 100644 (file)
--- a/drivers/media/usb/dvb-usb/dvb-usb-dvb.c
+++ b/drivers/media/usb/dvb-usb/dvb-usb-dvb.c
@@ -94,11 +94,11 @@ static int dvb_usb_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
        return dvb_usb_ctrl_feed(dvbdmxfeed,0);
 }
 
-static void dvb_usb_media_device_register(struct dvb_usb_device *d)
+static void dvb_usb_media_device_register(struct dvb_usb_adapter *adap)
 {
 #ifdef CONFIG_MEDIA_CONTROLLER_DVB
-
        struct media_device *mdev;
+       struct dvb_usb_device *d = adap->dev;
        struct usb_device *udev = d->udev;
        int ret;
 
@@ -122,24 +122,21 @@ static void dvb_usb_media_device_register(struct dvb_usb_device *d)
                kfree(mdev);
                return;
        }
-
-       d->media_dev = mdev;
+       adap->dvb_adap.mdev = mdev;
 
        dev_info(&d->udev->dev, "media controller created\n");
-
 #endif
 }
 
-static void dvb_usb_media_device_unregister(struct dvb_usb_device *d)
+static void dvb_usb_media_device_unregister(struct dvb_usb_adapter *adap)
 {
 #ifdef CONFIG_MEDIA_CONTROLLER_DVB
-       if (!d->media_dev)
+       if (!adap->dvb_adap.mdev)
                return;
 
-       media_device_unregister(d->media_dev);
-       kfree(d->media_dev);
-       d->media_dev = NULL;
-
+       media_device_unregister(adap->dvb_adap.mdev);
+       kfree(adap->dvb_adap.mdev);
+       adap->dvb_adap.mdev = NULL;
 #endif
 }
 
@@ -157,8 +154,7 @@ int dvb_usb_adapter_dvb_init(struct dvb_usb_adapter *adap, short *adapter_nums)
        adap->dvb_adap.priv = adap;
 
 #ifdef CONFIG_MEDIA_CONTROLLER_DVB
-       dvb_usb_media_device_register(adap->dev);
-       adap->dvb_adap.mdev = adap->dev->media_dev;
+       dvb_usb_media_device_register(adap);
 #endif
 
        if (adap->dev->props.read_mac_address) {
@@ -208,7 +204,7 @@ err_net_init:
 err_dmx_dev:
        dvb_dmx_release(&adap->demux);
 err_dmx:
-       dvb_usb_media_device_unregister(adap->dev);
+       dvb_usb_media_device_unregister(adap);
        dvb_unregister_adapter(&adap->dvb_adap);
 err:
        return ret;
@@ -222,7 +218,7 @@ int dvb_usb_adapter_dvb_exit(struct dvb_usb_adapter *adap)
                adap->demux.dmx.close(&adap->demux.dmx);
                dvb_dmxdev_release(&adap->dmxdev);
                dvb_dmx_release(&adap->demux);
-               dvb_usb_media_device_unregister(adap->dev);
+               dvb_usb_media_device_unregister(adap);
                dvb_unregister_adapter(&adap->dvb_adap);
                adap->state &= ~DVB_USB_ADAP_STATE_DVB;
        }
@@ -324,7 +320,7 @@ int dvb_usb_adapter_frontend_init(struct dvb_usb_adapter *adap)
                adap->num_frontends_initialized++;
        }
 
-       dvb_create_media_graph(adap->dev->media_dev);
+       dvb_create_media_graph(adap->dvb_adap.mdev);
 
        return 0;
 }

diff --git a/drivers/media/usb/dvb-usb/dvb-usb.h b/drivers/media/usb/dvb-usb/dvb-usb.h
index 8d37f1e..ce4c4e3 100644 (file)
--- a/drivers/media/usb/dvb-usb/dvb-usb.h
+++ b/drivers/media/usb/dvb-usb/dvb-usb.h
@@ -453,10 +453,6 @@ struct dvb_usb_device {
        struct module *owner;
 
        void *priv;
-
-#ifdef CONFIG_MEDIA_CONTROLLER_DVB
-       struct media_device *media_dev;
-#endif
 };
 
 extern int dvb_usb_device_init(struct usb_interface *,