[media] dvb_frontend: tuner_ops.release returns void

It is not clear what this return value means.  All implemenations
return 0, and the one caller ignores the value.  Let's remove this
useless return value completely.

Signed-off-by: Max Kellermann <max.kellermann@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

6 files changed, 6 insertions, 12 deletions

diff --git a/drivers/media/dvb-frontends/ascot2e.c b/drivers/media/dvb-frontends/ascot2e.c
index ad304eed656d7..0ee0df53b91bb 100644
--- a/drivers/media/dvb-frontends/ascot2e.c
+++ b/drivers/media/dvb-frontends/ascot2e.c
@@ -254,14 +254,13 @@ static int ascot2e_init(struct dvb_frontend *fe)
 	return ascot2e_leave_power_save(priv);
 }
 
-static int ascot2e_release(struct dvb_frontend *fe)
+static void ascot2e_release(struct dvb_frontend *fe)
 {
 	struct ascot2e_priv *priv = fe->tuner_priv;
 
 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
 	kfree(fe->tuner_priv);
 	fe->tuner_priv = NULL;
-	return 0;
 }
 
 static int ascot2e_sleep(struct dvb_frontend *fe)
diff --git a/drivers/media/dvb-frontends/cx24113.c b/drivers/media/dvb-frontends/cx24113.c
index 3812ef8cac082..db44ebb7c5612 100644
--- a/drivers/media/dvb-frontends/cx24113.c
+++ b/drivers/media/dvb-frontends/cx24113.c
@@ -527,13 +527,12 @@ static int cx24113_get_frequency(struct dvb_frontend *fe, u32 *frequency)
 	return 0;
 }
 
-static int cx24113_release(struct dvb_frontend *fe)
+static void cx24113_release(struct dvb_frontend *fe)
 {
 	struct cx24113_state *state = fe->tuner_priv;
 	dprintk("\n");
 	fe->tuner_priv = NULL;
 	kfree(state);
-	return 0;
 }
 
 static const struct dvb_tuner_ops cx24113_tuner_ops = {
diff --git a/drivers/media/dvb-frontends/helene.c b/drivers/media/dvb-frontends/helene.c
index dc43c5f6d0ea4..ef35c2b30ea3b 100644
--- a/drivers/media/dvb-frontends/helene.c
+++ b/drivers/media/dvb-frontends/helene.c
@@ -434,14 +434,13 @@ static int helene_init(struct dvb_frontend *fe)
 	return helene_leave_power_save(priv);
 }
 
-static int helene_release(struct dvb_frontend *fe)
+static void helene_release(struct dvb_frontend *fe)
 {
 	struct helene_priv *priv = fe->tuner_priv;
 
 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
 	kfree(fe->tuner_priv);
 	fe->tuner_priv = NULL;
-	return 0;
 }
 
 static int helene_sleep(struct dvb_frontend *fe)
diff --git a/drivers/media/dvb-frontends/horus3a.c b/drivers/media/dvb-frontends/horus3a.c
index 0c089b5986a19..94bb4f7a2298c 100644
--- a/drivers/media/dvb-frontends/horus3a.c
+++ b/drivers/media/dvb-frontends/horus3a.c
@@ -151,14 +151,13 @@ static int horus3a_init(struct dvb_frontend *fe)
 	return 0;
 }
 
-static int horus3a_release(struct dvb_frontend *fe)
+static void horus3a_release(struct dvb_frontend *fe)
 {
 	struct horus3a_priv *priv = fe->tuner_priv;
 
 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
 	kfree(fe->tuner_priv);
 	fe->tuner_priv = NULL;
-	return 0;
 }
 
 static int horus3a_sleep(struct dvb_frontend *fe)
diff --git a/drivers/media/dvb-frontends/ts2020.c b/drivers/media/dvb-frontends/ts2020.c
index a9f6bbea6df36..931e5c98da8af 100644
--- a/drivers/media/dvb-frontends/ts2020.c
+++ b/drivers/media/dvb-frontends/ts2020.c
@@ -56,7 +56,7 @@ struct ts2020_reg_val {
 
 static void ts2020_stat_work(struct work_struct *work);
 
-static int ts2020_release(struct dvb_frontend *fe)
+static void ts2020_release(struct dvb_frontend *fe)
 {
 	struct ts2020_priv *priv = fe->tuner_priv;
 	struct i2c_client *client = priv->client;
@@ -64,7 +64,6 @@ static int ts2020_release(struct dvb_frontend *fe)
 	dev_dbg(&client->dev, "\n");
 
 	i2c_unregister_device(client);
-	return 0;
 }
 
 static int ts2020_sleep(struct dvb_frontend *fe)
diff --git a/drivers/media/dvb-frontends/zl10039.c b/drivers/media/dvb-frontends/zl10039.c
index d6ded11fee493..60a2954f8ff80 100644
--- a/drivers/media/dvb-frontends/zl10039.c
+++ b/drivers/media/dvb-frontends/zl10039.c
@@ -244,14 +244,13 @@ error:
 	return ret;
 }
 
-static int zl10039_release(struct dvb_frontend *fe)
+static void zl10039_release(struct dvb_frontend *fe)
 {
 	struct zl10039_state *state = fe->tuner_priv;
 
 	dprintk("%s\n", __func__);
 	kfree(state);
 	fe->tuner_priv = NULL;
-	return 0;
 }
 
 static const struct dvb_tuner_ops zl10039_ops = {