From 5d461321c93013edf839a7a3fea2845cc3073ca8 Mon Sep 17 00:00:00 2001
From: Lorenzo Bianconi <lorenzo@kernel.org>
Date: Sat, 20 Nov 2021 19:57:17 +0100
Subject: [PATCH] mt76: mt7921: honor mt76_connac_mcu_set_rate_txpower return value in mt7921_config
Git-commit: 5d461321c93013edf839a7a3fea2845cc3073ca8
Patch-mainline: v5.17-rc1
References: bsc#1209980

Check return code from mt76_connac_mcu_set_rate_txpower() in mt7921_config
routine.

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/net/wireless/mediatek/mt76/mt7921/main.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/main.c b/drivers/net/wireless/mediatek/mt76/mt7921/main.c
index 46d805d6856a..5d0b0c18e786 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/main.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/main.c
@@ -468,7 +468,7 @@ static int mt7921_config(struct ieee80211_hw *hw, u32 changed)
 {
 	struct mt7921_dev *dev = mt7921_hw_dev(hw);
 	struct mt7921_phy *phy = mt7921_hw_phy(hw);
-	int ret;
+	int ret = 0;
 
 	if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
 		ieee80211_stop_queues(hw);
@@ -480,8 +480,11 @@ static int mt7921_config(struct ieee80211_hw *hw, u32 changed)
 
 	mt7921_mutex_acquire(dev);
 
-	if (changed & IEEE80211_CONF_CHANGE_POWER)
-		mt76_connac_mcu_set_rate_txpower(phy->mt76);
+	if (changed & IEEE80211_CONF_CHANGE_POWER) {
+		ret = mt76_connac_mcu_set_rate_txpower(phy->mt76);
+		if (ret)
+			goto out;
+	}
 
 	if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
 		bool enabled = !!(hw->conf.flags & IEEE80211_CONF_MONITOR);
@@ -496,9 +499,10 @@ static int mt7921_config(struct ieee80211_hw *hw, u32 changed)
 		mt76_wr(dev, MT_WF_RFCR(0), phy->rxfilter);
 	}
 
+out:
 	mt7921_mutex_release(dev);
 
-	return 0;
+	return ret;
 }
 
 static int
-- 
2.35.3