linux-kernel - Re: [PATCH] iommu/qcom: add missing put_device() call in qcom_iommu_of

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Message-ID: <3a2d2c51-dd4f-8384-805a-c91413ce4373@huawei.com>
Date:   Tue, 29 Sep 2020 09:37:47 +0800
From:   "yukuai (C)" <yukuai3@...wei.com>
To:     Will Deacon <will@...nel.org>, kernel test robot <lkp@...el.com>
CC:     <robdclark@...il.com>, <joro@...tes.org>,
        <kbuild-all@...ts.01.org>, <clang-built-linux@...glegroups.com>,
        <iommu@...ts.linux-foundation.org>,
        <linux-arm-msm@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <yi.zhang@...wei.com>
Subject: Re: [PATCH] iommu/qcom: add missing put_device() call in
 qcom_iommu_of_xlate()


On 2020/09/29 7:08, Will Deacon wrote:
> On Mon, Sep 21, 2020 at 09:45:57PM +0100, Will Deacon wrote:
>> On Tue, Sep 22, 2020 at 03:13:53AM +0800, kernel test robot wrote:
>>> 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-20200921]
>>> [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-r023-20200920 (attached as .config)
>>> compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 4e8c028158b56d9c2142a62464e8e0686bde3584)
>>> 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
>>>          # install arm64 cross compiling tool for clang build
>>>          # apt-get install binutils-aarch64-linux-gnu
>>>          # save the attached .config to linux build tree
>>>          COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm64
>>>
>>> If you fix the issue, kindly add following tag as appropriate
>>> Reported-by: kernel test robot <lkp@...el.com>
>>>
>>> All warnings (new ones prefixed by >>):
>>>
>>>>> drivers/iommu/arm/arm-smmu/qcom_iommu.c:601:4: warning: misleading indentation; statement is not part of the previous 'if' [-Wmisleading-indentation]
>>>                             return -EINVAL;
>>>                             ^
>>>     drivers/iommu/arm/arm-smmu/qcom_iommu.c:599:3: note: previous statement is here
>>>                     if (WARN_ON(qcom_iommu != dev_iommu_priv_get(dev)))
>>
>> Oh, this looks like a nasty bug. Seems we're missing some braces.
> 
> Yu Kuai: please could you send a v2 of this?
> 

Hi, Will

Thanks for your notice, will send a V2 soon.

Yu Kuai