netdev - Re: [PATCH] net: stmmac: Fix missing spin_lock_init in visconti_eth_dwmac

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Message-ID: <20210223231120.cwjwihml4zu2qnau@toshiba.co.jp>
Date:   Wed, 24 Feb 2021 08:11:20 +0900
From:   Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@...hiba.co.jp>
To:     Wei Yongjun <weiyongjun1@...wei.com>
Cc:     Hulk Robot <hulkci@...wei.com>,
        Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Alexandre Torgue <alexandre.torgue@...com>,
        Jose Abreu <joabreu@...opsys.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        netdev@...r.kernel.org, linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] net: stmmac: Fix missing spin_lock_init in
 visconti_eth_dwmac_probe()

Hi,

On Tue, Feb 23, 2021 at 10:48:03AM +0000, Wei Yongjun wrote:
> The driver allocates the spinlock but not initialize it.
> Use spin_lock_init() on it to initialize it correctly.
> 
> Fixes: b38dd98ff8d0 ("net: stmmac: Add Toshiba Visconti SoCs glue driver")
> Reported-by: Hulk Robot <hulkci@...wei.com>
> Signed-off-by: Wei Yongjun <weiyongjun1@...wei.com>

Thanks for your fix.

Acked-by: Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@...hiba.co.jp>

> ---
>  drivers/net/ethernet/stmicro/stmmac/dwmac-visconti.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-visconti.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-visconti.c
> index b7a0c57dfbfb..d23be45a64e5 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-visconti.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-visconti.c
> @@ -218,6 +218,7 @@ static int visconti_eth_dwmac_probe(struct platform_device *pdev)
>  		goto remove_config;
>  	}
>  
> +	spin_lock_init(&dwmac->lock);
>  	dwmac->reg = stmmac_res.addr;
>  	plat_dat->bsp_priv = dwmac;
>  	plat_dat->fix_mac_speed = visconti_eth_fix_mac_speed;
> 
>

Best regards,
  Nobuhiro