linux-kernel - Re: [PATCH] net: ethernet: arc: Fix a potential memory leak if an optional regulator is deferred

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Date:   Fri, 16 Mar 2018 21:51:21 +0100
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     linux-kernel@...r.kernel.org
Cc:     netdev@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, kernel-janitors@...r.kernel.org
Subject: Re: [PATCH] net: ethernet: arc: Fix a potential memory leak if an
 optional regulator is deferred

Le 16/03/2018 à 20:27, David Miller a écrit :
> From: Christophe JAILLET <christophe.jaillet@...adoo.fr>
> Date: Wed, 14 Mar 2018 22:09:34 +0100
>
>> diff --git a/drivers/net/ethernet/arc/emac_rockchip.c b/drivers/net/ethernet/arc/emac_rockchip.c
>> index 16f9bee992fe..8ee9dfd0e363 100644
>> --- a/drivers/net/ethernet/arc/emac_rockchip.c
>> +++ b/drivers/net/ethernet/arc/emac_rockchip.c
>> @@ -169,8 +169,10 @@ static int emac_rockchip_probe(struct platform_device *pdev)
>>   	/* Optional regulator for PHY */
>>   	priv->regulator = devm_regulator_get_optional(dev, "phy");
>>   	if (IS_ERR(priv->regulator)) {
>> -		if (PTR_ERR(priv->regulator) == -EPROBE_DEFER)
>> -			return -EPROBE_DEFER;
>> +		if (PTR_ERR(priv->regulator) == -EPROBE_DEFER) {
>> +			ret = -EPROBE_DEFER;
>> +			goto out_clk_disable;
>> +		}
> Please build test your changes.
>
> There is no 'ret' variable in this function, perhaps you meant 'err'.
>
Yes, obviously, this is 'err'.

I apologize. I usually build-test all my patches before submission.
This one seems to have gone out of my normal process.

Can you fix it yourself or do you want me to re-submit?

CJ