Re: [PATCH v2 2/9] iommu: Add dummy dev_iommu_fwspec_get() helper

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Hi Thierry,

I love your patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on v5.4-rc5 next-20191031]
[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/Thierry-Reding/drm-nouveau-Various-fixes-for-GP10B/20191103-125101
base:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 56cfd2507d3e720f4b1dbf9513e00680516a0826
config: i386-tinyconfig (attached as .config)
compiler: gcc-7 (Debian 7.4.0-14) 7.4.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

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

All errors (new ones prefixed by >>):

   In file included from arch/x86/kernel/pci-dma.c:4:0:
>> include/linux/iommu.h:615:8: error: redefinition of 'struct iommu_fwspec'
    struct iommu_fwspec {};
           ^~~~~~~~~~~~
   In file included from include/linux/dma-mapping.h:7:0,
                    from include/linux/dma-direct.h:5,
                    from arch/x86/kernel/pci-dma.c:2:
   include/linux/device.h:43:8: note: originally defined here
    struct iommu_fwspec;
           ^~~~~~~~~~~~

vim +615 include/linux/iommu.h

4a77a6cf6d9bf9 Joerg Roedel    2008-11-26  612  
39d4ebb9592504 Joerg Roedel    2011-09-06  613  struct iommu_ops {};
d72e31c9374627 Alex Williamson 2012-05-30  614  struct iommu_group {};
57f98d2f61e191 Robin Murphy    2016-09-13 @615  struct iommu_fwspec {};
b0119e870837dc Joerg Roedel    2017-02-01  616  struct iommu_device {};
4e32348ba5269a Jacob Pan       2019-06-03  617  struct iommu_fault_param {};
a7d20dc19d9ea7 Will Deacon     2019-07-02  618  struct iommu_iotlb_gather {};
4a77a6cf6d9bf9 Joerg Roedel    2008-11-26  619  

:::::: The code at line 615 was first introduced by commit
:::::: 57f98d2f61e191ef9d06863c9ce3f8621f3671ef iommu: Introduce iommu_fwspec

:::::: TO: Robin Murphy <robin.murphy@xxxxxxx>
:::::: CC: Will Deacon <will.deacon@xxxxxxx>

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

Attachment: .config.gz
Description: application/gzip


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