linux-kernel - Re: [PATCH net] net: hns3: clean up a return in hclge_tm_bp

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Message-ID: <3fbcbfbd-deea-162e-9281-29e65b90996b@huawei.com>
Date:   Mon, 26 Oct 2020 11:18:16 +0800
From:   Yunsheng Lin <linyunsheng@...wei.com>
To:     Dan Carpenter <dan.carpenter@...cle.com>,
        Yisen Zhuang <yisen.zhuang@...wei.com>
CC:     Salil Mehta <salil.mehta@...wei.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Huazhong Tan <tanhuazhong@...wei.com>,
        Yonglong Liu <liuyonglong@...wei.com>,
        Yufeng Mo <moyufeng@...wei.com>,
        Pankaj Bharadiya <pankaj.laxminarayan.bharadiya@...el.com>,
        Guangbin Huang <huangguangbin2@...wei.com>,
        <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <kernel-janitors@...r.kernel.org>
Subject: Re: [PATCH net] net: hns3: clean up a return in hclge_tm_bp_setup()

On 2020/10/23 19:22, Dan Carpenter wrote:
> Smatch complains that "ret" might be uninitialized if we don't enter
> the loop.  We do always enter the loop so it's a false positive, but
> it's cleaner to just return a literal zero and that silences the
> warning as well.

Thanks for the clean up. Minor comment below:
Perhap it makes sense to limit ret scope within the for loop after
returning zero.

> 
> Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
> ---
>  drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c
> index 15f69fa86323..e8495f58a1a8 100644
> --- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c
> +++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c
> @@ -1373,7 +1373,7 @@ static int hclge_tm_bp_setup(struct hclge_dev *hdev)
>  			return ret;
>  	}
>  
> -	return ret;
> +	return 0;
>  }
>  
>  int hclge_pause_setup_hw(struct hclge_dev *hdev, bool init)
>