media: vidtv: fix driver unbind/remove

The current remove logic is broken and causes an OOPS.

Fix it.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

drivers/media/test-drivers/vidtv/vidtv_bridge.c

@@ -472,30 +472,16 @@ static int vidtv_bridge_remove(struct platform_device *pdev)
 
 	mutex_destroy(&dvb->feed_lock);
 
-	for (i = 0; i < NUM_FE; ++i)
-		dvb->demux.dmx.remove_frontend(&dvb->demux.dmx,
-					       &dvb->dmx_fe[i]);
-
-	dvb_dmxdev_release(&dvb->dmx_dev);
-	dvb_dmx_release(&dvb->demux);
-
 	for (i = 0; i < NUM_FE; ++i) {
 		dvb_unregister_frontend(dvb->fe[i]);
-		dvb_frontend_detach(dvb->fe[i]);
-	}
-
-	dvb_unregister_adapter(&dvb->adapter);
-
-	for (i = 0; i < NUM_FE; i++)
 		dvb_module_release(dvb->i2c_client_tuner[i]);
-
-	for (i = 0; i < NUM_FE ; i++)
 		dvb_module_release(dvb->i2c_client_demod[i]);
+	}
 
+	dvb_dmxdev_release(&dvb->dmx_dev);
+	dvb_dmx_release(&dvb->demux);
 	dvb_unregister_adapter(&dvb->adapter);
 
-	i2c_del_adapter(&dvb->i2c_adapter);
-
 	return 0;
 }
 

drivers/media/test-drivers/vidtv/vidtv_demod.c

@@ -416,8 +416,6 @@ static int vidtv_demod_i2c_remove(struct i2c_client *client)
 {
 	struct vidtv_demod_state *state = i2c_get_clientdata(client);
 
-	memset(&state->frontend.ops, 0, sizeof(struct dvb_frontend_ops));
-	state->frontend.demodulator_priv = NULL;
 	kfree(state);
 
 	return 0;

drivers/media/test-drivers/vidtv/vidtv_tuner.c

@@ -402,10 +402,7 @@ static int vidtv_tuner_i2c_probe(struct i2c_client *client,
 static int vidtv_tuner_i2c_remove(struct i2c_client *client)
 {
 	struct vidtv_tuner_dev *tuner_dev = i2c_get_clientdata(client);
-	struct dvb_frontend *fe           = tuner_dev->fe;
 
-	memset(&fe->ops.tuner_ops, 0, sizeof(struct dvb_tuner_ops));
-	fe->tuner_priv = NULL;
 	kfree(tuner_dev);
 
 	return 0;