Re: [PATCH] iommu/qcom: add missing put_device() call in qcom_iommu_of_xlate()

From: kernel test robot <lkp@intel.com>
To: Yu Kuai <yukuai3@huawei.com>,
	robdclark@gmail.com, will@kernel.org, joro@8bytes.org
Cc: kbuild-all@lists.01.org, yi.zhang@huawei.com,
	linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org,
	iommu@lists.linux-foundation.org, yukuai3@huawei.com,
	linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH] iommu/qcom: add missing put_device() call in qcom_iommu_of_xlate()
Date: Wed, 23 Sep 2020 12:32:39 +0800	[thread overview]
Message-ID: <202009231200.IzAtls8H%lkp@intel.com> (raw)
In-Reply-To: <20200918011357.909335-1-yukuai3@huawei.com>

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Hi Yu,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on iommu/next]
[also build test WARNING on linus/master v5.9-rc6 next-20200922]
[cannot apply to robclark/msm-next]
[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]

url:    https://github.com/0day-ci/linux/commits/Yu-Kuai/iommu-qcom-add-missing-put_device-call-in-qcom_iommu_of_xlate/20200918-091341
base:   https://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu.git next
config: arm64-randconfig-m031-20200923 (attached as .config)
compiler: aarch64-linux-gcc (GCC) 9.3.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

   In file included from arch/arm64/include/asm/atomic.h:12,
                    from include/linux/atomic.h:7,
                    from drivers/iommu/arm/arm-smmu/qcom_iommu.c:9:
   drivers/iommu/arm/arm-smmu/qcom_iommu.c: In function 'qcom_iommu_of_xlate':
>> include/linux/compiler.h:56:23: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
      56 | #define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) )
         |                       ^~
   drivers/iommu/arm/arm-smmu/qcom_iommu.c:599:3: note: in expansion of macro 'if'
     599 |   if (WARN_ON(qcom_iommu != dev_iommu_priv_get(dev)))
         |   ^~
   drivers/iommu/arm/arm-smmu/qcom_iommu.c:601:4: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
     601 |    return -EINVAL;
         |    ^~~~~~

# https://github.com/0day-ci/linux/commit/2d982fb40897ad8088dd9dba06aee499f51c73ba
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Yu-Kuai/iommu-qcom-add-missing-put_device-call-in-qcom_iommu_of_xlate/20200918-091341
git checkout 2d982fb40897ad8088dd9dba06aee499f51c73ba
vim +/if +56 include/linux/compiler.h

2bcd521a684cc9 Steven Rostedt 2008-11-21  50  
2bcd521a684cc9 Steven Rostedt 2008-11-21  51  #ifdef CONFIG_PROFILE_ALL_BRANCHES
2bcd521a684cc9 Steven Rostedt 2008-11-21  52  /*
2bcd521a684cc9 Steven Rostedt 2008-11-21  53   * "Define 'is'", Bill Clinton
2bcd521a684cc9 Steven Rostedt 2008-11-21  54   * "Define 'if'", Steven Rostedt
2bcd521a684cc9 Steven Rostedt 2008-11-21  55   */
a15fd609ad53a6 Linus Torvalds 2019-03-20 @56  #define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) )
a15fd609ad53a6 Linus Torvalds 2019-03-20  57  

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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