[media] dvb_usb_v2: remove various unneeded variables

Adapter priv is not really needed, use device priv instead.
There is only driver or two using that.

Device caps are not needed. There was only "has I2C adapter"
capability defined. It is useless as we can see same just
checking existence of i2c_algo callback.

And also remove some totally not used at all variables.
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

@@ -211,9 +211,6 @@ struct dvb_usb_device_properties {
 	struct module *owner;
 	short *adapter_nr;
 
-#define DVB_USB_IS_AN_I2C_ADAPTER            0x01
-	int caps;
-
 	int size_of_priv;
 
 	const char *firmware;
@@ -330,8 +327,6 @@ struct dvb_usb_adapter {
 
 	int active_fe;
 	int num_frontends_initialized;
-
-	void *priv;
 };
 
 /**
@@ -387,8 +382,6 @@ struct dvb_usb_device {
 	struct input_dev *input_dev;
 	char rc_phys[64];
 	struct delayed_work rc_query_work;
-	u32 last_event;
-	int last_state;
 
 	void *priv;
 };

drivers/media/dvb/dvb-usb/dvb_usb_i2c.c

@@ -11,14 +11,9 @@ int dvb_usb_i2c_init(struct dvb_usb_device *d)
 {
 	int ret = 0;
 
-	if (!(d->props.caps & DVB_USB_IS_AN_I2C_ADAPTER))
+	if (!d->props.i2c_algo)
 		return 0;
 
-	if (d->props.i2c_algo == NULL) {
-		err("no i2c algorithm specified");
-		return -EINVAL;
-	}
-
 	strlcpy(d->i2c_adap.name, d->name, sizeof(d->i2c_adap.name));
 	d->i2c_adap.algo      = d->props.i2c_algo;
 	d->i2c_adap.algo_data = NULL;

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

@@ -125,14 +125,6 @@ static int dvb_usb_adapter_init(struct dvb_usb_device *d)
 			adap->max_feed_count = adap->props.pid_filter_count;
 		}
 
-		if (adap->props.size_of_priv > 0) {
-			adap->priv = kzalloc(adap->props.size_of_priv, GFP_KERNEL);
-			if (adap->priv == NULL) {
-				err("no memory for priv for adapter %d.", n);
-				return -ENOMEM;
-			}
-		}
-
 		ret = dvb_usb_adapter_stream_init(adap);
 		if (ret)
 			return ret;
@@ -178,7 +170,7 @@ static int dvb_usb_adapter_exit(struct dvb_usb_device *d)
 		dvb_usb_adapter_frontend_exit(&d->adapter[n]);
 		dvb_usb_adapter_dvb_exit(&d->adapter[n]);
 		dvb_usb_adapter_stream_exit(&d->adapter[n]);
-		kfree(d->adapter[n].priv);
+
 	}
 	d->num_adapters_initialized = 0;
 	d->state &= ~DVB_USB_STATE_DVB;