wifi: mt76: mt7915: add error message in mt7915_thermal_set_cur_throttle_state()

Add dev_err so that it is easier to see invalid setting while looking at
dmesg.
Co-developed-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Howard Hsu <howard-yh.hsu@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/mt7915/init.c

@@ -145,8 +145,11 @@ mt7915_thermal_set_cur_throttle_state(struct thermal_cooling_device *cdev,
 	u8 throttling = MT7915_THERMAL_THROTTLE_MAX - state;
 	int ret;
 
-	if (state > MT7915_CDEV_THROTTLE_MAX)
+	if (state > MT7915_CDEV_THROTTLE_MAX) {
+		dev_err(phy->dev->mt76.dev,
+			"please specify a valid throttling state\n");
 		return -EINVAL;
+	}
 
 	if (state == phy->cdev_state)
 		return 0;
@@ -175,7 +178,7 @@ static void mt7915_unregister_thermal(struct mt7915_phy *phy)
 	struct wiphy *wiphy = phy->mt76->hw->wiphy;
 
 	if (!phy->cdev)
-	    return;
+		return;
 
 	sysfs_remove_link(&wiphy->dev.kobj, "cooling_device");
 	thermal_cooling_device_unregister(phy->cdev);
@@ -209,8 +212,8 @@ static int mt7915_thermal_init(struct mt7915_phy *phy)
 		return PTR_ERR(hwmon);
 
 	/* initialize critical/maximum high temperature */
-	phy->throttle_temp[MT7915_CRIT_TEMP_IDX] = 110;
-	phy->throttle_temp[MT7915_MAX_TEMP_IDX] = 120;
+	phy->throttle_temp[MT7915_CRIT_TEMP_IDX] = MT7915_CRIT_TEMP;
+	phy->throttle_temp[MT7915_MAX_TEMP_IDX] = MT7915_MAX_TEMP;
 
 	return 0;
 }
@@ -1182,7 +1185,6 @@ static void mt7915_stop_hardware(struct mt7915_dev *dev)
 		mt7986_wmac_disable(dev);
 }
 
-
 int mt7915_register_device(struct mt7915_dev *dev)
 {
 	struct mt7915_phy *phy2;

drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h

@@ -72,6 +72,8 @@
 
 #define MT7915_CRIT_TEMP_IDX		0
 #define MT7915_MAX_TEMP_IDX		1
+#define MT7915_CRIT_TEMP		110
+#define MT7915_MAX_TEMP			120
 
 struct mt7915_vif;
 struct mt7915_sta;