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Message-Id: <20191116.131429.2205837170380620136.davem@davemloft.net>
Date:   Sat, 16 Nov 2019 13:14:29 -0800 (PST)
From:   David Miller <davem@...emloft.net>
To:     chenwandun@...wei.com
Cc:     joabreu@...opsys.com, netdev@...r.kernel.org,
        linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] net: stmmac: remove variable 'ret' set but not used

From: Chen Wandun <chenwandun@...wei.com>
Date: Sat, 16 Nov 2019 11:50:46 +0800

> Fixes gcc '-Wunused-but-set-variable' warning:
> 
> drivers/net/ethernet/stmicro/stmmac/stmmac_main.c: In function stmmac_rx_buf1_len:
> drivers/net/ethernet/stmicro/stmmac/stmmac_main.c:3460:6: warning: variable ret set but not used [-Wunused-but-set-variable]
> 
> Signed-off-by: Chen Wandun <chenwandun@...wei.com>
> ---
>  drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> index 39b4efd..7003a30 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> @@ -3457,7 +3457,7 @@ static unsigned int stmmac_rx_buf1_len(struct stmmac_priv *priv,
>  				       struct dma_desc *p,
>  				       int status, unsigned int len)
>  {
> -	int ret, coe = priv->hw->rx_csum;
> +	int coe = priv->hw->rx_csum;
>  	unsigned int plen = 0, hlen = 0;

You are breaking the reverse christmas tree ordering of the local
variables here, please don't do that.

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