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Date: Thu, 4 Apr 2024 06:57:12 +0800
From: kernel test robot <lkp@intel.com>
To: Chenghai Huang <huangchenghai2@huawei.com>, herbert@gondor.apana.org.au,
	davem@davemloft.net
Cc: oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org,
	linux-crypto@vger.kernel.org, fanghao11@huawei.com,
	liulongfang@huawei.com, shenyang39@huawei.com,
	songzhiqi1@huawei.com, qianweili@huawei.com,
	liushangbin@hisilicon.com, linwenkai6@hisilicon.com,
	taoqi10@huawei.com, wangzhou1@hisilicon.com,
	huangchenghai2@huawei.com
Subject: Re: [PATCH 8/9] crypto: hisilicon/debugfs - Resolve the problem of
 applying for redundant space in sq dump
Message-ID: <202404040616.cF0Pvb9M-lkp@intel.com>
References: <20240403100102.2735306-9-huangchenghai2@huawei.com>
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In-Reply-To: <20240403100102.2735306-9-huangchenghai2@huawei.com>

Hi Chenghai,

kernel test robot noticed the following build warnings:

[auto build test WARNING on herbert-cryptodev-2.6/master]
[also build test WARNING on herbert-crypto-2.6/master linus/master v6.9-rc2 next-20240403]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Chenghai-Huang/crypto-hisilicon-sec-Add-the-condition-for-configuring-the-sriov-function/20240403-180924
base:   https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git master
patch link:    https://lore.kernel.org/r/20240403100102.2735306-9-huangchenghai2%40huawei.com
patch subject: [PATCH 8/9] crypto: hisilicon/debugfs - Resolve the problem of applying for redundant space in sq dump
config: arm64-defconfig (https://download.01.org/0day-ci/archive/20240404/202404040616.cF0Pvb9M-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240404/202404040616.cF0Pvb9M-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202404040616.cF0Pvb9M-lkp@intel.com/

All warnings (new ones prefixed by >>):

   drivers/crypto/hisilicon/debugfs.c: In function 'qm_sq_dump':
>> drivers/crypto/hisilicon/debugfs.c:314:21: warning: unused variable 'sqe_curr' [-Wunused-variable]
     314 |         void *sqe, *sqe_curr;
         |                     ^~~~~~~~


vim +/sqe_curr +314 drivers/crypto/hisilicon/debugfs.c

94476b2b6d60bc Kai Ye         2022-11-12  310  
9c75609842f091 Kai Ye         2022-11-12  311  static int qm_sq_dump(struct hisi_qm *qm, char *s, char *name)
94476b2b6d60bc Kai Ye         2022-11-12  312  {
94476b2b6d60bc Kai Ye         2022-11-12  313  	u16 sq_depth = qm->qp_array->cq_depth;
94476b2b6d60bc Kai Ye         2022-11-12 @314  	void *sqe, *sqe_curr;
94476b2b6d60bc Kai Ye         2022-11-12  315  	struct hisi_qp *qp;
94476b2b6d60bc Kai Ye         2022-11-12  316  	u32 qp_id, sqe_id;
94476b2b6d60bc Kai Ye         2022-11-12  317  	int ret;
94476b2b6d60bc Kai Ye         2022-11-12  318  
94476b2b6d60bc Kai Ye         2022-11-12  319  	ret = q_dump_param_parse(qm, s, &sqe_id, &qp_id, sq_depth);
94476b2b6d60bc Kai Ye         2022-11-12  320  	if (ret)
94476b2b6d60bc Kai Ye         2022-11-12  321  		return ret;
94476b2b6d60bc Kai Ye         2022-11-12  322  
e0bbea3a20f7a0 Chenghai Huang 2024-04-03  323  	sqe = kzalloc(qm->sqe_size, GFP_KERNEL);
94476b2b6d60bc Kai Ye         2022-11-12  324  	if (!sqe)
94476b2b6d60bc Kai Ye         2022-11-12  325  		return -ENOMEM;
94476b2b6d60bc Kai Ye         2022-11-12  326  
94476b2b6d60bc Kai Ye         2022-11-12  327  	qp = &qm->qp_array[qp_id];
e0bbea3a20f7a0 Chenghai Huang 2024-04-03  328  	memcpy(sqe, qp->sqe + sqe_id * qm->sqe_size, qm->sqe_size);
e0bbea3a20f7a0 Chenghai Huang 2024-04-03  329  	memset(sqe + qm->debug.sqe_mask_offset, QM_SQE_ADDR_MASK,
94476b2b6d60bc Kai Ye         2022-11-12  330  	       qm->debug.sqe_mask_len);
94476b2b6d60bc Kai Ye         2022-11-12  331  
e0bbea3a20f7a0 Chenghai Huang 2024-04-03  332  	dump_show(qm, sqe, qm->sqe_size, name);
94476b2b6d60bc Kai Ye         2022-11-12  333  
94476b2b6d60bc Kai Ye         2022-11-12  334  	kfree(sqe);
94476b2b6d60bc Kai Ye         2022-11-12  335  
94476b2b6d60bc Kai Ye         2022-11-12  336  	return 0;
94476b2b6d60bc Kai Ye         2022-11-12  337  }
94476b2b6d60bc Kai Ye         2022-11-12  338  

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki