mt76: mt76x02: run mt76x02_edcca_init atomically in mt76_edcca_set

Run mt76x02_edcca_init atomically in mt76_edcca_set since it runs
concurrently with calibration work and mt76x2_set_channel.
Moreover perform phy calibration atomically
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/mt76x02_debugfs.c

@@ -122,11 +122,15 @@ mt76_edcca_set(void *data, u64 val)
 	struct mt76x02_dev *dev = data;
 	enum nl80211_dfs_regions region = dev->dfs_pd.region;
 
+	mutex_lock(&dev->mt76.mutex);
+
 	dev->ed_monitor_enabled = !!val;
 	dev->ed_monitor = dev->ed_monitor_enabled &&
 			  region == NL80211_DFS_ETSI;
 	mt76x02_edcca_init(dev);
 
+	mutex_unlock(&dev->mt76.mutex);
+
 	return 0;
 }
 

drivers/net/wireless/mediatek/mt76/mt76x2/pci_phy.c

@@ -294,10 +294,16 @@ void mt76x2_phy_calibrate(struct work_struct *work)
 	struct mt76x02_dev *dev;
 
 	dev = container_of(work, struct mt76x02_dev, cal_work.work);
+
+	mutex_lock(&dev->mt76.mutex);
+
 	mt76x2_phy_channel_calibrate(dev, false);
 	mt76x2_phy_tssi_compensate(dev);
 	mt76x2_phy_temp_compensate(dev);
 	mt76x2_phy_update_channel_gain(dev);
+
+	mutex_unlock(&dev->mt76.mutex);
+
 	ieee80211_queue_delayed_work(mt76_hw(dev), &dev->cal_work,
 				     MT_CALIBRATE_INTERVAL);
 }

drivers/net/wireless/mediatek/mt76/mt76x2/usb_phy.c

@@ -55,10 +55,15 @@ void mt76x2u_phy_calibrate(struct work_struct *work)
 	struct mt76x02_dev *dev;
 
 	dev = container_of(work, struct mt76x02_dev, cal_work.work);
+
+	mutex_lock(&dev->mt76.mutex);
+
 	mt76x2u_phy_channel_calibrate(dev, false);
 	mt76x2_phy_tssi_compensate(dev);
 	mt76x2_phy_update_channel_gain(dev);
 
+	mutex_unlock(&dev->mt76.mutex);
+
 	ieee80211_queue_delayed_work(mt76_hw(dev), &dev->cal_work,
 				     MT_CALIBRATE_INTERVAL);
 }