From 706dc08c2936be970f171e6b095db99493406c72 Mon Sep 17 00:00:00 2001
From: Lorenzo Bianconi <lorenzo@kernel.org>
Date: Sun, 12 Sep 2021 17:49:50 +0200
Subject: [PATCH] mt76: mt7915: honor all possible error conditions in mt7915_mcu_init()
Git-commit: 706dc08c2936be970f171e6b095db99493406c72
Patch-mainline: v5.16-rc1
References: bsc#1209980

Check all possible errors returned in mt7915_mcu_init 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/mt7915/mcu.c | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
index 5a3dc04de31f..f07d935c52b2 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
@@ -416,7 +416,7 @@ mt7915_mcu_send_message(struct mt76_dev *mdev, struct sk_buff *skb,
 	return mt76_tx_queue_skb_raw(dev, mdev->q_mcu[qid], skb, 0);
 }
 
-static void
+static int
 mt7915_mcu_wa_cmd(struct mt7915_dev *dev, int cmd, u32 a1, u32 a2, u32 a3)
 {
 	struct {
@@ -429,7 +429,7 @@ mt7915_mcu_wa_cmd(struct mt7915_dev *dev, int cmd, u32 a1, u32 a2, u32 a3)
 		},
 	};
 
-	mt76_mcu_send_msg(&dev->mt76, cmd, &req, sizeof(req), true);
+	return mt76_mcu_send_msg(&dev->mt76, cmd, &req, sizeof(req), true);
 }
 
 static void
@@ -2889,11 +2889,16 @@ int mt7915_mcu_init(struct mt7915_dev *dev)
 		return ret;
 
 	set_bit(MT76_STATE_MCU_RUNNING, &dev->mphy.state);
-	mt7915_mcu_fw_log_2_host(dev, 0);
-	mt7915_mcu_set_mwds(dev, 1);
-	mt7915_mcu_wa_cmd(dev, MCU_WA_PARAM_CMD(SET), MCU_WA_PARAM_RED, 0, 0);
+	ret = mt7915_mcu_fw_log_2_host(dev, 0);
+	if (ret)
+		return ret;
 
-	return 0;
+	ret = mt7915_mcu_set_mwds(dev, 1);
+	if (ret)
+		return ret;
+
+	return mt7915_mcu_wa_cmd(dev, MCU_WA_PARAM_CMD(SET),
+				 MCU_WA_PARAM_RED, 0, 0);
 }
 
 void mt7915_mcu_exit(struct mt7915_dev *dev)
-- 
2.35.3