linux-kernel - Re: Re: [PATCH] octeontx2-vf: Add missing free for alloc

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Message-Id: <20230316095820.17889-1-jiasheng@iscas.ac.cn>
Date:   Thu, 16 Mar 2023 17:58:20 +0800
From:   Jiasheng Jiang <jiasheng@...as.ac.cn>
To:     michal.swiatkowski@...ux.intel.com
Cc:     sgoutham@...vell.com, gakula@...vell.com, sbhatta@...vell.com,
        hkelam@...vell.com, davem@...emloft.net, edumazet@...gle.com,
        kuba@...nel.org, pabeni@...hat.com, richardcochran@...il.com,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        Jiasheng Jiang <jiasheng@...as.ac.cn>
Subject: Re: Re: [PATCH] octeontx2-vf: Add missing free for alloc_percpu

On Thu, Mar 16, 2023 at 10:39:11AM +0800, Jiasheng Jiang wrote:
> On Thu, Mar 16, 2023 at 10:39:11AM +0800, Jiasheng Jiang wrote:
>> Add the free_percpu for the allocated "vf->hw.lmt_info" in order to avoid
>> memory leak, same as the "pf->hw.lmt_info" in
>> `drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c`.
>> 
>> Fixes: 5c0512072f65 ("octeontx2-pf: cn10k: Use runtime allocated LMTLINE region")
>> Signed-off-by: Jiasheng Jiang <jiasheng@...as.ac.cn>
>> ---
>>  drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c | 4 ++++
>>  1 file changed, 4 insertions(+)
>> 
>> diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c
>> index 7f8ffbf79cf7..9db2e2d218bb 100644
>> --- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c
>> +++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c
>> @@ -709,6 +709,8 @@ static int otx2vf_probe(struct pci_dev *pdev, const struct pci_device_id *id)
>>  err_ptp_destroy:
>>  	otx2_ptp_destroy(vf);
>>  err_detach_rsrc:
>> +	if (vf->hw.lmt_info)
>> +		free_percpu(vf->hw.lmt_info);
>>  	if (test_bit(CN10K_LMTST, &vf->hw.cap_flag))
>>  		qmem_free(vf->dev, vf->dync_lmt);
> I wonder if it wouldn't be more error prune when You create a function
> to unroll cn10k_lmtst_init() like cn10k_lmtst_deinit(). These two if can
> be there, maybe also sth else is missing.
> 
> Otherwise it is fine
> Reviewed-by: Michal Swiatkowski <michal.swiatkowski@...ux.intel.com>

I try my best and find nothing else missing.

Thanks,
Jiang