linux-kernel - Re: [PATCH v2 1/5] net: dsa: add missing kfree on remove

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Message-ID: <5613AD68.1020600@cogentembedded.com>
Date:	Tue, 6 Oct 2015 14:15:52 +0300
From:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:	Neil Armstrong <narmstrong@...libre.com>,
	"David S. Miller" <davem@...emloft.net>,
	Florian Fainelli <f.fainelli@...il.com>,
	Guenter Roeck <linux@...ck-us.net>,
	vivien.didelot@...oirfairelinux.com, Andrew Lunn <andrew@...n.ch>,
	Fabian Frederick <fabf@...net.be>,
	Pavel Nakonechny <pavel.nakonechny@...tlab.ru>,
	Joe Perches <joe@...ches.com>, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, nbd@...nwrt.org
Subject: Re: [PATCH v2 1/5] net: dsa: add missing kfree on remove

Hello.

On 10/6/2015 10:25 AM, Neil Armstrong wrote:

>>>>> To prevent memory leakage on unbinding, add missing kfree calls.
>>>>>
>>>>> Signed-off-by: Neil Armstrong <narmstrong@...libre.com>
>>>>> ---
>>>>>     net/dsa/dsa.c | 5 ++++-
>>>>>     1 file changed, 4 insertions(+), 1 deletion(-)
>>>>>
>>>>> diff --git a/net/dsa/dsa.c b/net/dsa/dsa.c
>>>>> index c59fa5d..12cec40 100644
>>>>> --- a/net/dsa/dsa.c
>>>>> +++ b/net/dsa/dsa.c
>>>>> @@ -914,8 +914,10 @@ static void dsa_remove_dst(struct dsa_switch_tree *dst)
>>>>>         for (i = 0; i < dst->pd->nr_chips; i++) {
>>>>>             struct dsa_switch *ds = dst->ds[i];
>>>>>
>>>>> -        if (ds != NULL)
>>>>> +        if (ds != NULL) {
>>>>
>>>>      Didn;t scripts/checkpatch.pl complain here? just if (ds) is preferred in the networking code.
>>>>
>>>> MBR, Sergei
>>>>
>>> Yes,
>>>
>>> But I considered the cosmetic changes are not the subject of this serie.
>>
>>     Formally, all the patches should be checkpatch-clean...
>>
>>> Neil
>>
>> MBR, Sergei
>>
> Sure,

> How should I handle this case ?
> A separate patch with the cosmetic change before the kfree addition ?

    No, that would classify as a cleanup, and cleanups shouldn't be queued 
before fixes (should be the other way around). Just do this in this same 
patch, possibly mentioning in the change log.

> Neil

MBR, Sergei

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