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Date:   Thu, 31 Dec 2020 11:09:18 +0100
From:   Lorenzo Bianconi <lorenzo@...nel.org>
To:     Nathan Chancellor <natechancellor@...il.com>
Cc:     Felix Fietkau <nbd@....name>,
        Lorenzo Bianconi <lorenzo.bianconi83@...il.com>,
        Ryder Lee <ryder.lee@...iatek.com>,
        Kalle Valo <kvalo@...eaurora.org>,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org,
        clang-built-linux@...glegroups.com
Subject: Re: [PATCH] mt76: Fix queue ID variable types after mcu queue split

> Clang warns in both mt7615 and mt7915:
> 
> drivers/net/wireless/mediatek/mt76/mt7915/mcu.c:271:9: warning: implicit
> conversion from enumeration type 'enum mt76_mcuq_id' to different
> enumeration type 'enum mt76_txq_id' [-Wenum-conversion]
>                 txq = MT_MCUQ_FWDL;
>                     ~ ^~~~~~~~~~~~
> drivers/net/wireless/mediatek/mt76/mt7915/mcu.c:278:9: warning: implicit
> conversion from enumeration type 'enum mt76_mcuq_id' to different
> enumeration type 'enum mt76_txq_id' [-Wenum-conversion]
>                 txq = MT_MCUQ_WA;
>                     ~ ^~~~~~~~~~
> drivers/net/wireless/mediatek/mt76/mt7915/mcu.c:282:9: warning: implicit
> conversion from enumeration type 'enum mt76_mcuq_id' to different
> enumeration type 'enum mt76_txq_id' [-Wenum-conversion]
>                 txq = MT_MCUQ_WM;
>                     ~ ^~~~~~~~~~
> 3 warnings generated.
> 
> drivers/net/wireless/mediatek/mt76/mt7615/mcu.c:238:9: warning: implicit
> conversion from enumeration type 'enum mt76_mcuq_id' to different
> enumeration type 'enum mt76_txq_id' [-Wenum-conversion]
>                 qid = MT_MCUQ_WM;
>                     ~ ^~~~~~~~~~
> drivers/net/wireless/mediatek/mt76/mt7615/mcu.c:240:9: warning: implicit
> conversion from enumeration type 'enum mt76_mcuq_id' to different
> enumeration type 'enum mt76_txq_id' [-Wenum-conversion]
>                 qid = MT_MCUQ_FWDL;
>                     ~ ^~~~~~~~~~~~
> 2 warnings generated.
> 
> Use the proper type for the queue ID variables to fix these warnings.
> Additionally, rename the txq variable in mt7915_mcu_send_message to be
> more neutral like mt7615_mcu_send_message.
> 
> Fixes: e637763b606b ("mt76: move mcu queues to mt76_dev q_mcu array")
> Link: https://github.com/ClangBuiltLinux/linux/issues/1229
> Signed-off-by: Nathan Chancellor <natechancellor@...il.com>

Acked-by: Lorenzo Bianconi <lorenzo@...nel.org>

> ---
>  drivers/net/wireless/mediatek/mt76/mt7615/mcu.c |  2 +-
>  drivers/net/wireless/mediatek/mt76/mt7915/mcu.c | 10 +++++-----
>  2 files changed, 6 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c
> index a44b7766dec6..c13547841a4e 100644
> --- a/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c
> +++ b/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c
> @@ -231,7 +231,7 @@ mt7615_mcu_send_message(struct mt76_dev *mdev, struct sk_buff *skb,
>  			int cmd, int *seq)
>  {
>  	struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76);
> -	enum mt76_txq_id qid;
> +	enum mt76_mcuq_id qid;
>  
>  	mt7615_mcu_fill_msg(dev, skb, cmd, seq);
>  	if (test_bit(MT76_STATE_MCU_RUNNING, &dev->mphy.state))
> diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
> index 5fdd1a6d32ee..e211a2bd4d3c 100644
> --- a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
> +++ b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
> @@ -256,7 +256,7 @@ mt7915_mcu_send_message(struct mt76_dev *mdev, struct sk_buff *skb,
>  	struct mt7915_dev *dev = container_of(mdev, struct mt7915_dev, mt76);
>  	struct mt7915_mcu_txd *mcu_txd;
>  	u8 seq, pkt_fmt, qidx;
> -	enum mt76_txq_id txq;
> +	enum mt76_mcuq_id qid;
>  	__le32 *txd;
>  	u32 val;
>  
> @@ -268,18 +268,18 @@ mt7915_mcu_send_message(struct mt76_dev *mdev, struct sk_buff *skb,
>  		seq = ++dev->mt76.mcu.msg_seq & 0xf;
>  
>  	if (cmd == -MCU_CMD_FW_SCATTER) {
> -		txq = MT_MCUQ_FWDL;
> +		qid = MT_MCUQ_FWDL;
>  		goto exit;
>  	}
>  
>  	mcu_txd = (struct mt7915_mcu_txd *)skb_push(skb, sizeof(*mcu_txd));
>  
>  	if (test_bit(MT76_STATE_MCU_RUNNING, &dev->mphy.state)) {
> -		txq = MT_MCUQ_WA;
> +		qid = MT_MCUQ_WA;
>  		qidx = MT_TX_MCU_PORT_RX_Q0;
>  		pkt_fmt = MT_TX_TYPE_CMD;
>  	} else {
> -		txq = MT_MCUQ_WM;
> +		qid = MT_MCUQ_WM;
>  		qidx = MT_TX_MCU_PORT_RX_Q0;
>  		pkt_fmt = MT_TX_TYPE_CMD;
>  	}
> @@ -326,7 +326,7 @@ mt7915_mcu_send_message(struct mt76_dev *mdev, struct sk_buff *skb,
>  	if (wait_seq)
>  		*wait_seq = seq;
>  
> -	return mt76_tx_queue_skb_raw(dev, mdev->q_mcu[txq], skb, 0);
> +	return mt76_tx_queue_skb_raw(dev, mdev->q_mcu[qid], skb, 0);
>  }
>  
>  static void
> 
> base-commit: 5c8fe583cce542aa0b84adc939ce85293de36e5e
> -- 
> 2.30.0
> 

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