netdev - Re: [PATCH v2 net 4/8] net: mscc: ocelot: check for errors on memory allocation of ports

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Message-ID: <20200918152756.GA9675@piout.net>
Date:   Fri, 18 Sep 2020 17:27:56 +0200
From:   Alexandre Belloni <alexandre.belloni@...tlin.com>
To:     Vladimir Oltean <olteanv@...il.com>
Cc:     davem@...emloft.net, netdev@...r.kernel.org, yangbo.lu@....com,
        xiaoliang.yang_1@....com, UNGLinuxDriver@...rochip.com,
        claudiu.manoil@....com, andrew@...n.ch, vivien.didelot@...il.com,
        f.fainelli@...il.com, kuba@...nel.org
Subject: Re: [PATCH v2 net 4/8] net: mscc: ocelot: check for errors on memory
 allocation of ports

On 18/09/2020 04:07:26+0300, Vladimir Oltean wrote:
> From: Vladimir Oltean <vladimir.oltean@....com>
> 
> Do not proceed probing if we couldn't allocate memory for the ports
> array, just error out.
> 
> Signed-off-by: Vladimir Oltean <vladimir.oltean@....com>
> Reviewed-by: Horatiu Vultur <horatiu.vultur@...rochip.com>

Tested-by: Alexandre Belloni <alexandre.belloni@...tlin.com>
Reviewed-by: Alexandre Belloni <alexandre.belloni@...tlin.com>

> ---
> Changes in v2:
> Stopped leaking the 'ports' OF node.
> 
>  drivers/net/ethernet/mscc/ocelot_vsc7514.c | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/drivers/net/ethernet/mscc/ocelot_vsc7514.c b/drivers/net/ethernet/mscc/ocelot_vsc7514.c
> index 65408bc994c4..904ea299a5e8 100644
> --- a/drivers/net/ethernet/mscc/ocelot_vsc7514.c
> +++ b/drivers/net/ethernet/mscc/ocelot_vsc7514.c
> @@ -993,6 +993,10 @@ static int mscc_ocelot_probe(struct platform_device *pdev)
>  
>  	ocelot->ports = devm_kcalloc(&pdev->dev, ocelot->num_phys_ports,
>  				     sizeof(struct ocelot_port *), GFP_KERNEL);
> +	if (!ocelot->ports) {
> +		err = -ENOMEM;
> +		goto out_put_ports;
> +	}
>  
>  	ocelot->vcap_is2_keys = vsc7514_vcap_is2_keys;
>  	ocelot->vcap_is2_actions = vsc7514_vcap_is2_actions;
> -- 
> 2.25.1
> 

-- 
Alexandre Belloni, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com