Re: [PATCH] net: stmmac: Variable "val" in function sun8i_dwmac_set_syscon() could be uninitialized

[David Miller]

From: Yizhuo <yzhai003@xxxxxxx>
Date: Tue,  5 Feb 2019 14:15:59 -0800

> @@ -639,9 +639,14 @@ static int sun8i_dwmac_set_syscon(struct stmmac_priv *priv)
>  	struct sunxi_priv_data *gmac = priv->plat->bsp_priv;
>  	struct device_node *node = priv->device->of_node;
>  	int ret;
> -	u32 reg, val;
> +	u32 reg, val = 0;
> +
> +	ret = regmap_read(gmac->regmap, SYSCON_EMAC_REG, &val);
> +	if (ret) {
> +		dev_err(priv->device, "Fail to read SYSCON_EMAC_REG.\n");
> +		return ret;
> +	}

I agree with the other reviewer that since you check 'ret' the initialization of
'val' is no longer needed.