netdev - RE: [kbuild-all] Re: [PATCH net-next 03/15] sfc

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Date:   Wed, 8 Jul 2020 03:15:45 +0000
From:   "Xia, Hui" <hui.xia@...el.com>
To:     Edward Cree <ecree@...arflare.com>, lkp <lkp@...el.com>,
        "linux-net-drivers@...arflare.com" <linux-net-drivers@...arflare.com>,
        "davem@...emloft.net" <davem@...emloft.net>
CC:     "kbuild-all@...ts.01.org" <kbuild-all@...ts.01.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: RE: [kbuild-all] Re: [PATCH net-next 03/15] sfc_ef100: skeleton EF100
 PF driver



>-----Original Message-----
>From: Edward Cree <ecree@...arflare.com>
>Sent: 2020年7月8日 2:35
>To: lkp <lkp@...el.com>; linux-net-drivers@...arflare.com;
>davem@...emloft.net
>Cc: kbuild-all@...ts.01.org; netdev@...r.kernel.org
>Subject: [kbuild-all] Re: [PATCH net-next 03/15] sfc_ef100: skeleton EF100 PF
>driver
>
>On 04/07/2020 05:16, kernel test robot wrote:
>>>> drivers/net/ethernet/sfc/ptp.c:1442:1-4: alloc with no test,
>>>> possible model on line 1457
>This one's a false positive, see below:
Sorry for inconvenient. Please ignore this warning.
We will double check for this type of warning. Thanks.

>> vim +1442 drivers/net/ethernet/sfc/ptp.c
>>
>> 5d0dab01175bff0 Ben Hutchings   2013-10-16  1434
>> ac36baf817c39fc Ben Hutchings   2013-10-15  1435  /* Initialise PTP state. */
>> ac36baf817c39fc Ben Hutchings   2013-10-15  1436  int efx_ptp_probe(struct
>efx_nic *efx, struct efx_channel *channel)
>> 7c236c43b838221 Stuart Hodgson  2012-09-03  1437  {
>> 7c236c43b838221 Stuart Hodgson  2012-09-03  1438  	struct efx_ptp_data
>*ptp;
>> 7c236c43b838221 Stuart Hodgson  2012-09-03  1439  	int rc = 0;
>> 7c236c43b838221 Stuart Hodgson  2012-09-03  1440  	unsigned int pos;
>> 7c236c43b838221 Stuart Hodgson  2012-09-03  1441
>> 7c236c43b838221 Stuart Hodgson  2012-09-03 @1442  	ptp =
>kzalloc(sizeof(struct efx_ptp_data), GFP_KERNEL);
>We allocate ptp...
>> 7c236c43b838221 Stuart Hodgson  2012-09-03  1443  	efx->ptp_data = ptp;
>... assign it to efx->ptp_data...
>> 7c236c43b838221 Stuart Hodgson  2012-09-03  1444  	if (!efx->ptp_data)
>> 7c236c43b838221 Stuart Hodgson  2012-09-03  1445  		return -
>ENOMEM;
>... which we then test.
>
>So by here...
>> 7c236c43b838221 Stuart Hodgson  2012-09-03 @1457  	ptp->workwq =
>create_singlethread_workqueue("sfc_ptp");
>... we know ptp is non-NULL.
>
>-ed
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