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Date:   Sat, 21 Mar 2020 06:20:56 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Eric Auger <eric.auger@...hat.com>
Cc:     kbuild-all@...ts.01.org, eric.auger.pro@...il.com,
        eric.auger@...hat.com, iommu@...ts.linux-foundation.org,
        linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
        kvmarm@...ts.cs.columbia.edu, joro@...tes.org,
        alex.williamson@...hat.com, jacob.jun.pan@...ux.intel.com,
        yi.l.liu@...el.com, jean-philippe.brucker@....com,
        will.deacon@....com, robin.murphy@....com, marc.zyngier@....com,
        peter.maydell@...aro.org, zhangfei.gao@...il.com
Subject: Re: [PATCH v10 09/13] dma-iommu: Implement NESTED_MSI cookie

Hi Eric,

I love your patch! Yet something to improve:

[auto build test ERROR on iommu/next]
[also build test ERROR on linus/master v5.6-rc6 next-20200320]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:    https://github.com/0day-ci/linux/commits/Eric-Auger/SMMUv3-Nested-Stage-Setup-IOMMU-part/20200321-040627
base:   https://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu.git next
config: arm-exynos_defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (GCC) 9.2.0
reproduce:
        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
        GCC_VERSION=9.2.0 make.cross ARCH=arm 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@...el.com>

All errors (new ones prefixed by >>):

   In file included from drivers/gpu/drm/exynos/exynos_drm_dma.c:7:
>> include/linux/dma-iommu.h:90:1: error: expected identifier or '(' before '{' token
      90 | {
         | ^
   In file included from drivers/gpu/drm/exynos/exynos_drm_dma.c:7:
   include/linux/dma-iommu.h:89:1: warning: 'iommu_dma_unbind_guest_msi' declared 'static' but never defined [-Wunused-function]
      89 | iommu_dma_unbind_guest_msi(struct iommu_domain *domain, dma_addr_t giova);
         | ^~~~~~~~~~~~~~~~~~~~~~~~~~

vim +90 include/linux/dma-iommu.h

    87	
    88	static inline void
    89	iommu_dma_unbind_guest_msi(struct iommu_domain *domain, dma_addr_t giova);
  > 90	{
    91	}
    92	

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

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