linux-kernel - Re: [PATCH 5/7] iommu/dma: add support for non-strict mode

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Date:   Sat, 2 Jun 2018 01:51:30 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Zhen Lei <thunder.leizhen@...wei.com>
Cc:     kbuild-all@...org, Robin Murphy <robin.murphy@....com>,
        Will Deacon <will.deacon@....com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Rob Clark <robdclark@...il.com>,
        Joerg Roedel <joro@...tes.org>,
        linux-mediatek <linux-mediatek@...ts.infradead.org>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        iommu <iommu@...ts.linux-foundation.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Zhen Lei <thunder.leizhen@...wei.com>,
        Hanjun Guo <guohanjun@...wei.com>,
        Libin <huawei.libin@...wei.com>,
        Guozhu Li <liguozhu@...ilicon.com>,
        Xinwei Hu <huxinwei@...wei.com>
Subject: Re: [PATCH 5/7] iommu/dma: add support for non-strict mode

Hi Zhen,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on linus/master]
[also build test WARNING on v4.17-rc7 next-20180601]
[cannot apply to iommu/next]
[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/Zhen-Lei/add-non-strict-mode-support-for-arm-smmu-v3/20180602-000418
config: x86_64-randconfig-x008-201821 (attached as .config)
compiler: gcc-7 (Debian 7.3.0-16) 7.3.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All warnings (new ones prefixed by >>):

   drivers//iommu/amd_iommu.c: In function 'amd_iommu_capable':
>> drivers//iommu/amd_iommu.c:3053:2: warning: enumeration value 'IOMMU_CAP_NON_STRICT' not handled in switch [-Wswitch]
     switch (cap) {
     ^~~~~~

vim +/IOMMU_CAP_NON_STRICT +3053 drivers//iommu/amd_iommu.c

645c4c8d arch/x86/kernel/amd_iommu.c Joerg Roedel 2008-12-02  3050  
ab636481 drivers/iommu/amd_iommu.c   Joerg Roedel 2014-09-05  3051  static bool amd_iommu_capable(enum iommu_cap cap)
dbb9fd86 arch/x86/kernel/amd_iommu.c Sheng Yang   2009-03-18  3052  {
80a506b8 arch/x86/kernel/amd_iommu.c Joerg Roedel 2010-07-27 @3053  	switch (cap) {
80a506b8 arch/x86/kernel/amd_iommu.c Joerg Roedel 2010-07-27  3054  	case IOMMU_CAP_CACHE_COHERENCY:
ab636481 drivers/iommu/amd_iommu.c   Joerg Roedel 2014-09-05  3055  		return true;
bdddadcb drivers/iommu/amd_iommu.c   Joerg Roedel 2012-07-02  3056  	case IOMMU_CAP_INTR_REMAP:
ab636481 drivers/iommu/amd_iommu.c   Joerg Roedel 2014-09-05  3057  		return (irq_remapping_enabled == 1);
cfdeec22 drivers/iommu/amd_iommu.c   Will Deacon  2014-10-27  3058  	case IOMMU_CAP_NOEXEC:
cfdeec22 drivers/iommu/amd_iommu.c   Will Deacon  2014-10-27  3059  		return false;
80a506b8 arch/x86/kernel/amd_iommu.c Joerg Roedel 2010-07-27  3060  	}
80a506b8 arch/x86/kernel/amd_iommu.c Joerg Roedel 2010-07-27  3061  
ab636481 drivers/iommu/amd_iommu.c   Joerg Roedel 2014-09-05  3062  	return false;
dbb9fd86 arch/x86/kernel/amd_iommu.c Sheng Yang   2009-03-18  3063  }
dbb9fd86 arch/x86/kernel/amd_iommu.c Sheng Yang   2009-03-18  3064  

:::::: The code at line 3053 was first introduced by commit
:::::: 80a506b8fdcfa868bb53eb740f928217d0966fc1 x86/amd-iommu: Export cache-coherency capability

:::::: TO: Joerg Roedel <joerg.roedel@....com>
:::::: CC: Joerg Roedel <joerg.roedel@....com>

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