mt76: mt76x0: remove unneeded return value on set channel

We allways return 0 from mt76x0_phy_set_channel(), no need to pass
return value upward.
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/mt76x0/main.c

@@ -8,18 +8,16 @@
 #include <linux/etherdevice.h>
 #include "mt76x0.h"
 
-static int
+static void
 mt76x0_set_channel(struct mt76x02_dev *dev, struct cfg80211_chan_def *chandef)
 {
-	int ret;
-
 	cancel_delayed_work_sync(&dev->cal_work);
 	mt76x02_pre_tbtt_enable(dev, false);
 	if (mt76_is_mmio(dev))
 		tasklet_disable(&dev->dfs_pd.dfs_tasklet);
 
 	mt76_set_channel(&dev->mt76);
-	ret = mt76x0_phy_set_channel(dev, chandef);
+	mt76x0_phy_set_channel(dev, chandef);
 
 	/* channel cycle counters read-and-clear */
 	mt76_rr(dev, MT_CH_IDLE);
@@ -34,20 +32,17 @@ mt76x0_set_channel(struct mt76x02_dev *dev, struct cfg80211_chan_def *chandef)
 	mt76x02_pre_tbtt_enable(dev, true);
 
 	mt76_txq_schedule_all(&dev->mt76);
-
-	return ret;
 }
 
 int mt76x0_config(struct ieee80211_hw *hw, u32 changed)
 {
 	struct mt76x02_dev *dev = hw->priv;
-	int ret = 0;
 
 	mutex_lock(&dev->mt76.mutex);
 
 	if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
 		ieee80211_stop_queues(hw);
-		ret = mt76x0_set_channel(dev, &hw->conf.chandef);
+		mt76x0_set_channel(dev, &hw->conf.chandef);
 		ieee80211_wake_queues(hw);
 	}
 
@@ -69,6 +64,6 @@ int mt76x0_config(struct ieee80211_hw *hw, u32 changed)
 
 	mutex_unlock(&dev->mt76.mutex);
 
-	return ret;
+	return 0;
 }
 EXPORT_SYMBOL_GPL(mt76x0_config);

drivers/net/wireless/mediatek/mt76/mt76x0/mt76x0.h

@@ -54,8 +54,8 @@ int mt76x0_config(struct ieee80211_hw *hw, u32 changed);
 /* PHY */
 void mt76x0_phy_init(struct mt76x02_dev *dev);
 int mt76x0_phy_wait_bbp_ready(struct mt76x02_dev *dev);
-int mt76x0_phy_set_channel(struct mt76x02_dev *dev,
-			   struct cfg80211_chan_def *chandef);
+void mt76x0_phy_set_channel(struct mt76x02_dev *dev,
+			    struct cfg80211_chan_def *chandef);
 void mt76x0_phy_set_txpower(struct mt76x02_dev *dev);
 void mt76x0_phy_calibrate(struct mt76x02_dev *dev, bool power_on);
 #endif

drivers/net/wireless/mediatek/mt76/mt76x0/phy.c

@@ -909,8 +909,8 @@ void mt76x0_phy_calibrate(struct mt76x02_dev *dev, bool power_on)
 }
 EXPORT_SYMBOL_GPL(mt76x0_phy_calibrate);
 
-int mt76x0_phy_set_channel(struct mt76x02_dev *dev,
-			   struct cfg80211_chan_def *chandef)
+void mt76x0_phy_set_channel(struct mt76x02_dev *dev,
+			    struct cfg80211_chan_def *chandef)
 {
 	u32 ext_cca_chan[4] = {
 		[0] = FIELD_PREP(MT_EXT_CCA_CFG_CCA0, 0) |
@@ -1004,7 +1004,7 @@ int mt76x0_phy_set_channel(struct mt76x02_dev *dev,
 	/* enable vco */
 	mt76x0_rf_set(dev, MT_RF(0, 4), BIT(7));
 	if (scan)
-		return 0;
+		return;
 
 	mt76x02_init_agc_gain(dev);
 	mt76x0_phy_calibrate(dev, false);
@@ -1012,8 +1012,6 @@ int mt76x0_phy_set_channel(struct mt76x02_dev *dev,
 
 	ieee80211_queue_delayed_work(dev->mt76.hw, &dev->cal_work,
 				     MT_CALIBRATE_INTERVAL);
-
-	return 0;
 }
 
 static void mt76x0_phy_temp_sensor(struct mt76x02_dev *dev)