Re: [PATCH 05/24] aacraid: Retrieve and update the device types

From: kbuild test robot <lkp@intel.com>
Cc: kbuild-all@01.org, jejb@linux.vnet.ibm.com,
	martin.petersen@oracle.com, linux-scsi@vger.kernel.org,
	David.Carroll@microsemi.com, Gana.Sridaran@microsemi.com,
	RaghavaAditya.Renukunta@microsemi.com,
	Scott.Banesh@microsemi.com
Subject: Re: [PATCH 05/24] aacraid: Retrieve and update the device types
Date: Tue, 24 Jan 2017 09:53:24 +0800	[thread overview]
Message-ID: <201701240959.Rs0p2OcI%fengguang.wu@intel.com> (raw)
In-Reply-To: <20170123180908.3465-6-RaghavaAditya.Renukunta@microsemi.com>

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Hi Raghava,

[auto build test WARNING on scsi/for-next]
[also build test WARNING on v4.10-rc5 next-20170123]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Raghava-Aditya-Renukunta/aacraid-Patchset-for-Smart-Family-card-support/20170124-093617
base:   https://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi.git for-next
config: x86_64-randconfig-x014-201704 (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

Note: it may well be a FALSE warning. FWIW you are at least aware of it now.
http://gcc.gnu.org/wiki/Better_Uninitialized_Warnings

All warnings (new ones prefixed by >>):

   drivers/scsi/aacraid/aachba.c: In function 'aac_report_phys_luns':
>> drivers/scsi/aacraid/aachba.c:1636:9: warning: 'rcode' may be used uninitialized in this function [-Wmaybe-uninitialized]
     return rcode;
            ^~~~~

vim +/rcode +1636 drivers/scsi/aacraid/aachba.c

  1620			sg64->count = cpu_to_le32(1);
  1621			sg64->sg[0].addr[1] = cpu_to_le32(upper_32_bits(addr));
  1622			sg64->sg[0].addr[0] = cpu_to_le32(lower_32_bits(addr));
  1623			sg64->sg[0].count = cpu_to_le32(datasize);
  1624	
  1625			rcode = aac_fib_send(ScsiPortCommand64, fibptr, fibsize,
  1626					FsaNormal, 1, 1, NULL, NULL);
  1627	
  1628			/* analyse data */
  1629			if (rcode >= 0 && phys_luns->resp_flag == 2) {
  1630				/* ok and extended reporting */
  1631				aac_update_hba_map(dev, phys_luns);
  1632			}
  1633		}
  1634	
  1635		pci_free_consistent(dev->pdev, datasize, (void *) phys_luns, addr);
> 1636		return rcode;
  1637	}
  1638	
  1639	int aac_get_adapter_info(struct aac_dev* dev)
  1640	{
  1641		struct fib* fibptr;
  1642		int rcode;
  1643		u32 tmp, bus, target;
  1644		struct aac_adapter_info *info;

---
0-DAY kernel test infrastructure                Open Source Technology Center
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