linux-kernel - Re: [EXT] [PATCH 1/2] scsi: qedi: Remove set but unused 'page' variable

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Date:   Fri, 26 Nov 2021 21:31:47 -0800
From:   Florian Fainelli <f.fainelli@...il.com>
To:     Manish Rangankar <mrangankar@...vell.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Cc:     kernel test robot <lkp@...el.com>,
        Nilesh Javali <njavali@...vell.com>,
        GR-QLogic-Storage-Upstream <GR-QLogic-Storage-Upstream@...vell.com>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        "open list:QLOGIC QL41xxx ISCSI DRIVER" <linux-scsi@...r.kernel.org>
Subject: Re: [EXT] [PATCH 1/2] scsi: qedi: Remove set but unused 'page'
 variable



On 11/26/2021 12:52 AM, Manish Rangankar wrote:
> 
> 
>> -----Original Message-----
>> From: Florian Fainelli <f.fainelli@...il.com>
>> Sent: Friday, November 26, 2021 10:45 AM
>> To: linux-kernel@...r.kernel.org
>> Cc: Florian Fainelli <f.fainelli@...il.com>; kernel test robot <lkp@...el.com>;
>> Nilesh Javali <njavali@...vell.com>; Manish Rangankar
>> <mrangankar@...vell.com>; GR-QLogic-Storage-Upstream <GR-QLogic-
>> Storage-Upstream@...vell.com>; James E.J. Bottomley <jejb@...ux.ibm.com>;
>> Martin K. Petersen <martin.petersen@...cle.com>; open list:QLOGIC QL41xxx
>> ISCSI DRIVER <linux-scsi@...r.kernel.org>
>> Subject: [EXT] [PATCH 1/2] scsi: qedi: Remove set but unused 'page' variable
>>
>> External Email
>>
>> ----------------------------------------------------------------------
>> The variable page is set but never used throughout qedi_alloc_bdq() therefore
>> remove it.
>>
>> Reported-by: kernel test robot <lkp@...el.com>
>> Signed-off-by: Florian Fainelli <f.fainelli@...il.com>
>> ---
>>   drivers/scsi/qedi/qedi_main.c | 3 ---
>>   1 file changed, 3 deletions(-)
>>
>> diff --git a/drivers/scsi/qedi/qedi_main.c b/drivers/scsi/qedi/qedi_main.c index
>> 1dec814d8788..f1c933070884 100644
>> --- a/drivers/scsi/qedi/qedi_main.c
>> +++ b/drivers/scsi/qedi/qedi_main.c
>> @@ -1538,7 +1538,6 @@ static int qedi_alloc_bdq(struct qedi_ctx *qedi)
>>   	int i;
>>   	struct scsi_bd *pbl;
>>   	u64 *list;
>> -	dma_addr_t page;
>>
>>   	/* Alloc dma memory for BDQ buffers */
>>   	for (i = 0; i < QEDI_BDQ_NUM; i++) {
>> @@ -1608,11 +1607,9 @@ static int qedi_alloc_bdq(struct qedi_ctx *qedi)
>>   	qedi->bdq_pbl_list_num_entries = qedi->bdq_pbl_mem_size /
>>   					 QEDI_PAGE_SIZE;
>>   	list = (u64 *)qedi->bdq_pbl_list;
>> -	page = qedi->bdq_pbl_list_dma;
>>   	for (i = 0; i < qedi->bdq_pbl_list_num_entries; i++) {
>>   		*list = qedi->bdq_pbl_dma;
>>   		list++;
>> -		page += QEDI_PAGE_SIZE;
>>   	}
>>
>>   	return 0;
>> --
>> 2.25.1
> 
> Thanks,
> Acked-by: Manish Rangankar <mrangankar@...vell.com>

Thanks for taking a look, does not that make the loop iterating the list 
even more useless now, though? Should not page have been used for 
something in that function?
-- 
Florian