linux-kernel - Re: [PATCH] net: dsa: vsc73xx: Add null pointer check to vsc73xx_gpio

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Message-ID: <0bc0a282-8a3d-460f-81af-ecf4cb92363c@kylinos.cn>
Date:   Thu, 14 Dec 2023 11:22:47 +0800
From:   Kunwu Chan <chentao@...inos.cn>
To:     Jakub Kicinski <kuba@...nel.org>
Cc:     andrew@...n.ch, f.fainelli@...il.com, olteanv@...il.com,
        davem@...emloft.net, edumazet@...gle.com, pabeni@...hat.com,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        Kunwu Chan <kunwu.chan@...mail.com>
Subject: Re: [PATCH] net: dsa: vsc73xx: Add null pointer check to
 vsc73xx_gpio_probe

Thanks for your reply.

I'll remove 'dev_err' in v2 patch.

Thanks again.

On 2023/12/13 05:27, Jakub Kicinski wrote:
> On Mon, 11 Dec 2023 10:45:49 +0800 Kunwu Chan wrote:
>>   	vsc->gc.label = devm_kasprintf(vsc->dev, GFP_KERNEL, "VSC%04x",
>>   				       vsc->chipid);
>> +	if (!vsc->gc.label) {
>> +		dev_err(vsc->dev, "Fail to allocate memory\n");
>> +		return -ENOMEM;
>> +	}
> 
> Don't add error prints on memory allocations.
> There will be an OOM splat in the logs.