netdev - Re: [PATCH net-next] octeontx2-af: Remove set but not used variable 'block'

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Date:   Sun, 21 Oct 2018 18:07:26 +0800
From:   YueHaibing <yuehaibing@...wei.com>
To:     Sunil Kovvuri <sunil.kovvuri@...il.com>
CC:     Sunil Goutham <sgoutham@...vell.com>,
        Linu Cherian <lcherian@...vell.com>,
        Geetha sowjanya <gakula@...vell.com>, <jerinj@...vell.com>,
        "David S. Miller" <davem@...emloft.net>,
        Linux Netdev List <netdev@...r.kernel.org>,
        <kernel-janitors@...r.kernel.org>
Subject: Re: [PATCH net-next] octeontx2-af: Remove set but not used variable
 'block'

On 2018/10/19 21:36, Sunil Kovvuri wrote:
> On Fri, Oct 19, 2018 at 6:11 PM YueHaibing <yuehaibing@...wei.com> wrote:
>>
>> Fixes gcc '-Wunused-but-set-variable' warning:
>>
>> drivers/net/ethernet/marvell/octeontx2/af/rvu_npa.c: In function 'rvu_npa_init':
>> drivers/net/ethernet/marvell/octeontx2/af/rvu_npa.c:446:20: warning:
>>  variable 'block' set but not used [-Wunused-but-set-variable]
>>
>> It never used since introduction in
>> commit 7a37245ef23f ("octeontx2-af: NPA block admin queue init")
>>
>> Signed-off-by: YueHaibing <yuehaibing@...wei.com>
>> ---
>>  drivers/net/ethernet/marvell/octeontx2/af/rvu_npa.c | 3 ---
>>  1 file changed, 3 deletions(-)
>>
>> diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npa.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_npa.c
>> index 0e43a69..7531fdc 100644
>> --- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npa.c
>> +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_npa.c
>> @@ -443,15 +443,12 @@ static int npa_aq_init(struct rvu *rvu, struct rvu_block *block)
>>  int rvu_npa_init(struct rvu *rvu)
>>  {
>>         struct rvu_hwinfo *hw = rvu->hw;
>> -       struct rvu_block *block;
>>         int blkaddr, err;
>>
>>         blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPA, 0);
>>         if (blkaddr < 0)
>>                 return 0;
>>
>> -       block = &hw->block[blkaddr];
>> -
>>         /* Initialize admin queue */
>>         err = npa_aq_init(rvu, &hw->block[blkaddr]);
>>         if (err)
>>
> 
> Thanks for the patch.
> Which GCC version do you use ?

gcc version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.10)

> Before submitting patches I did test compiling specifically with these
> "make  arch=X86 -j8 -Werror=unused-function -Wunused-but-set-variable"
> but that didn't throw these warnings.
> 
> Thanks,
> Sunil.
> 
> .
>