diff --git a/drivers/media/usb/dvb-usb/af9005-fe.c b/drivers/media/usb/dvb-usb/af9005-fe.c
index 9d6fa0556d7b..404e56b32145 100644
--- a/drivers/media/usb/dvb-usb/af9005-fe.c
+++ b/drivers/media/usb/dvb-usb/af9005-fe.c
@@ -1412,8 +1412,7 @@ static int af9005_fe_get_frontend(struct dvb_frontend *fe,
 
 static void af9005_fe_release(struct dvb_frontend *fe)
 {
-	struct af9005_fe_state *state =
-	    (struct af9005_fe_state *)fe->demodulator_priv;
+	struct af9005_fe_state *state = fe->demodulator_priv;
 	kfree(state);
 }
 
diff --git a/drivers/media/usb/dvb-usb/az6027.c b/drivers/media/usb/dvb-usb/az6027.c
index 7d78ee09be5e..9d0847190748 100644
--- a/drivers/media/usb/dvb-usb/az6027.c
+++ b/drivers/media/usb/dvb-usb/az6027.c
@@ -407,8 +407,8 @@ static int az6027_ci_read_attribute_mem(struct dvb_ca_en50221 *ca,
 					int slot,
 					int address)
 {
-	struct dvb_usb_device *d = (struct dvb_usb_device *)ca->data;
-	struct az6027_device_state *state = (struct az6027_device_state *)d->priv;
+	struct dvb_usb_device *d = ca->data;
+	struct az6027_device_state *state = d->priv;
 
 	int ret;
 	u8 req;
@@ -449,8 +449,8 @@ static int az6027_ci_write_attribute_mem(struct dvb_ca_en50221 *ca,
 					 int address,
 					 u8 value)
 {
-	struct dvb_usb_device *d = (struct dvb_usb_device *)ca->data;
-	struct az6027_device_state *state = (struct az6027_device_state *)d->priv;
+	struct dvb_usb_device *d = ca->data;
+	struct az6027_device_state *state = d->priv;
 
 	int ret;
 	u8 req;
@@ -480,8 +480,8 @@ static int az6027_ci_read_cam_control(struct dvb_ca_en50221 *ca,
 				      int slot,
 				      u8 address)
 {
-	struct dvb_usb_device *d = (struct dvb_usb_device *)ca->data;
-	struct az6027_device_state *state = (struct az6027_device_state *)d->priv;
+	struct dvb_usb_device *d = ca->data;
+	struct az6027_device_state *state = d->priv;
 
 	int ret;
 	u8 req;
@@ -526,8 +526,8 @@ static int az6027_ci_write_cam_control(struct dvb_ca_en50221 *ca,
 				       u8 address,
 				       u8 value)
 {
-	struct dvb_usb_device *d = (struct dvb_usb_device *)ca->data;
-	struct az6027_device_state *state = (struct az6027_device_state *)d->priv;
+	struct dvb_usb_device *d = ca->data;
+	struct az6027_device_state *state = d->priv;
 
 	int ret;
 	u8 req;
@@ -557,7 +557,7 @@ static int az6027_ci_write_cam_control(struct dvb_ca_en50221 *ca,
 
 static int CI_CamReady(struct dvb_ca_en50221 *ca, int slot)
 {
-	struct dvb_usb_device *d = (struct dvb_usb_device *)ca->data;
+	struct dvb_usb_device *d = ca->data;
 
 	int ret;
 	u8 req;
@@ -588,8 +588,8 @@ static int CI_CamReady(struct dvb_ca_en50221 *ca, int slot)
 
 static int az6027_ci_slot_reset(struct dvb_ca_en50221 *ca, int slot)
 {
-	struct dvb_usb_device *d = (struct dvb_usb_device *)ca->data;
-	struct az6027_device_state *state = (struct az6027_device_state *)d->priv;
+	struct dvb_usb_device *d = ca->data;
+	struct az6027_device_state *state = d->priv;
 
 	int ret, i;
 	u8 req;
@@ -644,8 +644,8 @@ static int az6027_ci_slot_shutdown(struct dvb_ca_en50221 *ca, int slot)
 
 static int az6027_ci_slot_ts_enable(struct dvb_ca_en50221 *ca, int slot)
 {
-	struct dvb_usb_device *d = (struct dvb_usb_device *)ca->data;
-	struct az6027_device_state *state = (struct az6027_device_state *)d->priv;
+	struct dvb_usb_device *d = ca->data;
+	struct az6027_device_state *state = d->priv;
 
 	int ret;
 	u8 req;
@@ -673,8 +673,8 @@ static int az6027_ci_slot_ts_enable(struct dvb_ca_en50221 *ca, int slot)
 
 static int az6027_ci_poll_slot_status(struct dvb_ca_en50221 *ca, int slot, int open)
 {
-	struct dvb_usb_device *d = (struct dvb_usb_device *)ca->data;
-	struct az6027_device_state *state = (struct az6027_device_state *)d->priv;
+	struct dvb_usb_device *d = ca->data;
+	struct az6027_device_state *state = d->priv;
 	int ret;
 	u8 req;
 	u16 value;
@@ -719,7 +719,7 @@ static void az6027_ci_uninit(struct dvb_usb_device *d)
 	if (NULL == d)
 		return;
 
-	state = (struct az6027_device_state *)d->priv;
+	state = d->priv;
 	if (NULL == state)
 		return;
 
@@ -735,7 +735,7 @@ static void az6027_ci_uninit(struct dvb_usb_device *d)
 static int az6027_ci_init(struct dvb_usb_adapter *a)
 {
 	struct dvb_usb_device *d = a->dev;
-	struct az6027_device_state *state = (struct az6027_device_state *)d->priv;
+	struct az6027_device_state *state = d->priv;
 	int ret;
 
 	deb_info("%s", __func__);
diff --git a/drivers/media/usb/dvb-usb/dtt200u-fe.c b/drivers/media/usb/dvb-usb/dtt200u-fe.c
index 9f83560ba63d..586afe22d817 100644
--- a/drivers/media/usb/dvb-usb/dtt200u-fe.c
+++ b/drivers/media/usb/dvb-usb/dtt200u-fe.c
@@ -195,7 +195,7 @@ static int dtt200u_fe_get_frontend(struct dvb_frontend* fe,
 
 static void dtt200u_fe_release(struct dvb_frontend* fe)
 {
-	struct dtt200u_fe_state *state = (struct dtt200u_fe_state*) fe->demodulator_priv;
+	struct dtt200u_fe_state *state = fe->demodulator_priv;
 	kfree(state);
 }
 
diff --git a/drivers/media/usb/dvb-usb/dw2102.c b/drivers/media/usb/dvb-usb/dw2102.c
index 0ca764282c76..0477f024e585 100644
--- a/drivers/media/usb/dvb-usb/dw2102.c
+++ b/drivers/media/usb/dvb-usb/dw2102.c
@@ -903,7 +903,7 @@ static int su3000_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff)
 
 static int su3000_power_ctrl(struct dvb_usb_device *d, int i)
 {
-	struct dw2102_state *state = (struct dw2102_state *)d->priv;
+	struct dw2102_state *state = d->priv;
 	int ret = 0;
 
 	info("%s: %d, initialized %d", __func__, i, state->initialized);
@@ -978,8 +978,7 @@ static int dw210x_set_voltage(struct dvb_frontend *fe,
 		.len = 2,
 	};
 
-	struct dvb_usb_adapter *udev_adap =
-		(struct dvb_usb_adapter *)(fe->dvb->priv);
+	struct dvb_usb_adapter *udev_adap = fe->dvb->priv;
 	if (voltage == SEC_VOLTAGE_18)
 		msg.buf = command_18v;
 	else if (voltage == SEC_VOLTAGE_13)
@@ -993,9 +992,8 @@ static int dw210x_set_voltage(struct dvb_frontend *fe,
 static int s660_set_voltage(struct dvb_frontend *fe,
 			    enum fe_sec_voltage voltage)
 {
-	struct dvb_usb_adapter *d =
-		(struct dvb_usb_adapter *)(fe->dvb->priv);
-	struct dw2102_state *st = (struct dw2102_state *)d->dev->priv;
+	struct dvb_usb_adapter *d = fe->dvb->priv;
+	struct dw2102_state *st = d->dev->priv;
 
 	dw210x_set_voltage(fe, voltage);
 	if (st->old_set_voltage)
@@ -1014,8 +1012,7 @@ static void dw210x_led_ctrl(struct dvb_frontend *fe, int offon)
 		.buf = led_off,
 		.len = 1
 	};
-	struct dvb_usb_adapter *udev_adap =
-		(struct dvb_usb_adapter *)(fe->dvb->priv);
+	struct dvb_usb_adapter *udev_adap = fe->dvb->priv;
 
 	if (offon)
 		msg.buf = led_on;
@@ -1025,9 +1022,8 @@ static void dw210x_led_ctrl(struct dvb_frontend *fe, int offon)
 static int tt_s2_4600_read_status(struct dvb_frontend *fe,
 				  enum fe_status *status)
 {
-	struct dvb_usb_adapter *d =
-		(struct dvb_usb_adapter *)(fe->dvb->priv);
-	struct dw2102_state *st = (struct dw2102_state *)d->dev->priv;
+	struct dvb_usb_adapter *d = fe->dvb->priv;
+	struct dw2102_state *st = d->dev->priv;
 	int ret;
 
 	ret = st->fe_read_status(fe, status);
@@ -2576,7 +2572,7 @@ static int dw2102_probe(struct usb_interface *intf,
 static void dw2102_disconnect(struct usb_interface *intf)
 {
 	struct dvb_usb_device *d = usb_get_intfdata(intf);
-	struct dw2102_state *st = (struct dw2102_state *)d->priv;
+	struct dw2102_state *st = d->priv;
 	struct i2c_client *client;
 
 	/* remove I2C client for tuner */
diff --git a/drivers/media/usb/dvb-usb/opera1.c b/drivers/media/usb/dvb-usb/opera1.c
index 0da86f58aff6..98b2177667d2 100644
--- a/drivers/media/usb/dvb-usb/opera1.c
+++ b/drivers/media/usb/dvb-usb/opera1.c
@@ -172,8 +172,7 @@ static int opera1_set_voltage(struct dvb_frontend *fe,
 	struct i2c_msg msg[] = {
 		{.addr = ADDR_B600_VOLTAGE_13V,.flags = 0,.buf = command_13v,.len = 1},
 	};
-	struct dvb_usb_adapter *udev_adap =
-	    (struct dvb_usb_adapter *)(fe->dvb->priv);
+	struct dvb_usb_adapter *udev_adap = fe->dvb->priv;
 	if (voltage == SEC_VOLTAGE_18) {
 		msg[0].addr = ADDR_B601_VOLTAGE_18V;
 		msg[0].buf = command_18v;
diff --git a/drivers/media/usb/dvb-usb/pctv452e.c b/drivers/media/usb/dvb-usb/pctv452e.c
index f0794c68c622..445aabde61e9 100644
--- a/drivers/media/usb/dvb-usb/pctv452e.c
+++ b/drivers/media/usb/dvb-usb/pctv452e.c
@@ -106,7 +106,7 @@ struct pctv452e_state {
 static int tt3650_ci_msg(struct dvb_usb_device *d, u8 cmd, u8 *data,
 			 unsigned int write_len, unsigned int read_len)
 {
-	struct pctv452e_state *state = (struct pctv452e_state *)d->priv;
+	struct pctv452e_state *state = d->priv;
 	u8 *buf;
 	u8 id;
 	unsigned int rlen;
@@ -157,8 +157,8 @@ static int tt3650_ci_msg_locked(struct dvb_ca_en50221 *ca,
 				u8 cmd, u8 *data, unsigned int write_len,
 				unsigned int read_len)
 {
-	struct dvb_usb_device *d = (struct dvb_usb_device *)ca->data;
-	struct pctv452e_state *state = (struct pctv452e_state *)d->priv;
+	struct dvb_usb_device *d = ca->data;
+	struct pctv452e_state *state = d->priv;
 	int ret;
 
 	mutex_lock(&state->ca_mutex);
@@ -290,8 +290,8 @@ static int tt3650_ci_slot_ts_enable(struct dvb_ca_en50221 *ca, int slot)
 
 static int tt3650_ci_slot_reset(struct dvb_ca_en50221 *ca, int slot)
 {
-	struct dvb_usb_device *d = (struct dvb_usb_device *)ca->data;
-	struct pctv452e_state *state = (struct pctv452e_state *)d->priv;
+	struct dvb_usb_device *d = ca->data;
+	struct pctv452e_state *state = d->priv;
 	u8 buf[1];
 	int ret;
 
@@ -359,7 +359,7 @@ static void tt3650_ci_uninit(struct dvb_usb_device *d)
 	if (NULL == d)
 		return;
 
-	state = (struct pctv452e_state *)d->priv;
+	state = d->priv;
 	if (NULL == state)
 		return;
 
@@ -377,7 +377,7 @@ static void tt3650_ci_uninit(struct dvb_usb_device *d)
 static int tt3650_ci_init(struct dvb_usb_adapter *a)
 {
 	struct dvb_usb_device *d = a->dev;
-	struct pctv452e_state *state = (struct pctv452e_state *)d->priv;
+	struct pctv452e_state *state = d->priv;
 	int ret;
 
 	ci_dbg("%s", __func__);
@@ -415,7 +415,7 @@ static int pctv452e_i2c_msg(struct dvb_usb_device *d, u8 addr,
 				const u8 *snd_buf, u8 snd_len,
 				u8 *rcv_buf, u8 rcv_len)
 {
-	struct pctv452e_state *state = (struct pctv452e_state *)d->priv;
+	struct pctv452e_state *state = d->priv;
 	u8 *buf;
 	u8 id;
 	int ret;
@@ -514,7 +514,7 @@ static u32 pctv452e_i2c_func(struct i2c_adapter *adapter)
 
 static int pctv452e_power_ctrl(struct dvb_usb_device *d, int i)
 {
-	struct pctv452e_state *state = (struct pctv452e_state *)d->priv;
+	struct pctv452e_state *state = d->priv;
 	u8 *b0, *rx;
 	int ret;
 
@@ -565,7 +565,7 @@ static int pctv452e_power_ctrl(struct dvb_usb_device *d, int i)
 
 static int pctv452e_rc_query(struct dvb_usb_device *d)
 {
-	struct pctv452e_state *state = (struct pctv452e_state *)d->priv;
+	struct pctv452e_state *state = d->priv;
 	u8 *b, *rx;
 	int ret, i;
 	u8 id;
