linux-kernel - Re: [PATCH] mt76: mt7915: Use proper enum type in __mt7915_mcu_msg

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Date:   Sat, 23 May 2020 15:46:19 +0800
From:   Ryder Lee <ryder.lee@...iatek.com>
To:     Nathan Chancellor <natechancellor@...il.com>
CC:     Felix Fietkau <nbd@....name>,
        Lorenzo Bianconi <lorenzo.bianconi83@...il.com>,
        <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: mt7915: Use proper enum type in
 __mt7915_mcu_msg_send

On Fri, 2020-05-22 at 21:19 -0700, Nathan Chancellor wrote:
> Clang warns:
> 
> drivers/net/wireless/mediatek/mt76/mt7915/mcu.c:232:9: warning: implicit
> conversion from enumeration type 'enum mt76_txq_id' to different
> enumeration type 'enum mt7915_txq_id' [-Wenum-conversion]
>                 txq = MT_TXQ_FWDL;
>                     ~ ^~~~~~~~~~~
> drivers/net/wireless/mediatek/mt76/mt7915/mcu.c:239:9: warning: implicit
> conversion from enumeration type 'enum mt76_txq_id' to different
> enumeration type 'enum mt7915_txq_id' [-Wenum-conversion]
>                 txq = MT_TXQ_MCU_WA;
>                     ~ ^~~~~~~~~~~~~
> drivers/net/wireless/mediatek/mt76/mt7915/mcu.c:243:9: warning: implicit
> conversion from enumeration type 'enum mt76_txq_id' to different
> enumeration type 'enum mt7915_txq_id' [-Wenum-conversion]
>                 txq = MT_TXQ_MCU;
>                     ~ ^~~~~~~~~~
> drivers/net/wireless/mediatek/mt76/mt7915/mcu.c:287:36: warning:
> implicit conversion from enumeration type 'enum mt7915_txq_id' to
> different enumeration type 'enum mt76_txq_id' [-Wenum-conversion]
>         return mt76_tx_queue_skb_raw(dev, txq, skb, 0);
>                ~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~
> 
> txq should be a "enum mt76_txq_id" as values of that type are the only
> ones assigned to it and that is the type that mt76_tx_queue_skb_raw
> expects.
> 
> Fixes: e57b7901469f ("mt76: add mac80211 driver for MT7915 PCIe-based chipsets")
> Link: https://github.com/ClangBuiltLinux/linux/issues/1035
> Signed-off-by: Nathan Chancellor <natechancellor@...il.com>
> ---
>  drivers/net/wireless/mediatek/mt76/mt7915/mcu.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
> index f00ad2b66761..916f664e964e 100644
> --- a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
> +++ b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
> @@ -220,7 +220,7 @@ static int __mt7915_mcu_msg_send(struct mt7915_dev *dev, struct sk_buff *skb,
>  {
>  	struct mt7915_mcu_txd *mcu_txd;
>  	u8 seq, pkt_fmt, qidx;
> -	enum mt7915_txq_id txq;
> +	enum mt76_txq_id txq;
>  	__le32 *txd;
>  	u32 val;
>  
> 
> base-commit: c11d28ab4a691736e30b49813fb801847bd44e83

Thanks. I have posted the fix here:
https://patchwork.kernel.org/patch/11553415/
This is already in Felix's tree.