[hch-misc:swiotlb-init-cleanup 8/11] arch/x86/include/asm/gart.h:56:2: error: void function 'gart_iommu_hole_init' should not return a value

[hch-misc:swiotlb-init-cleanup 8/11] arch/x86/include/asm/gart.h:56:2: error: void function 'gart_iommu_hole_init' should not return a value

[kernel test robot]

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tree:   git://git.infradead.org/users/hch/misc.git swiotlb-init-cleanup
head:   b0a4b60e2b05556a265441d07464d016e160ed50
commit: 12f2fe176ef701bc27dd2bf8061a5f178b547024 [8/11] x86: remove the IOMMU table infrastructure
config: i386-randconfig-a002-20220214 (https://download.01.org/0day-ci/archive/20220215/202202150933.VKTRTbyq-lkp(a)intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project ea071884b0cc7210b3cc5fe858f0e892a779a23b)
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
        git remote add hch-misc git://git.infradead.org/users/hch/misc.git
        git fetch --no-tags hch-misc swiotlb-init-cleanup
        git checkout 12f2fe176ef701bc27dd2bf8061a5f178b547024
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash

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

All errors (new ones prefixed by >>):

   In file included from arch/x86/kernel/setup.c:37:
>> arch/x86/include/asm/gart.h:56:2: error: void function 'gart_iommu_hole_init' should not return a value [-Wreturn-type]
           return -ENODEV;
           ^      ~~~~~~~
   1 error generated.
--
   In file included from arch/x86/kernel/pci-dma.c:15:
>> arch/x86/include/asm/gart.h:56:2: error: void function 'gart_iommu_hole_init' should not return a value [-Wreturn-type]
           return -ENODEV;
           ^      ~~~~~~~
>> arch/x86/kernel/pci-dma.c:86:2: error: implicit declaration of function 'detect_intel_iommu' [-Werror,-Wimplicit-function-declaration]
           detect_intel_iommu();
           ^
>> arch/x86/kernel/pci-dma.c:196:5: error: redefinition of 'pci_xen_swiotlb_init_late'
   int pci_xen_swiotlb_init_late(void)
       ^
   arch/x86/include/asm/xen/swiotlb-xen.h:8:19: note: previous definition is here
   static inline int pci_xen_swiotlb_init_late(void) { return -ENXIO; }
                     ^
   3 errors generated.


vim +/gart_iommu_hole_init +56 arch/x86/include/asm/gart.h

1d9b16d1690fe5 Joerg Roedel          2008-11-27  47  
1d9b16d1690fe5 Joerg Roedel          2008-11-27  48  static inline void early_gart_iommu_check(void)
1d9b16d1690fe5 Joerg Roedel          2008-11-27  49  {
1d9b16d1690fe5 Joerg Roedel          2008-11-27  50  }
1d9b16d1690fe5 Joerg Roedel          2008-11-27  51  static inline void gart_parse_options(char *options)
1d9b16d1690fe5 Joerg Roedel          2008-11-27  52  {
1d9b16d1690fe5 Joerg Roedel          2008-11-27  53  }
12f2fe176ef701 Christoph Hellwig     2022-02-14  54  static inline void gart_iommu_hole_init(void)
1d9b16d1690fe5 Joerg Roedel          2008-11-27  55  {
480125ba49ba62 Konrad Rzeszutek Wilk 2010-08-26 @56  	return -ENODEV;
1d9b16d1690fe5 Joerg Roedel          2008-11-27  57  }
1d9b16d1690fe5 Joerg Roedel          2008-11-27  58  #endif
1d9b16d1690fe5 Joerg Roedel          2008-11-27  59  

:::::: The code at line 56 was first introduced by commit
:::::: 480125ba49ba62be93beea37770f266846e077ab x86, iommu: Make all IOMMU's detection routines return a value.

:::::: TO: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
:::::: CC: H. Peter Anvin <hpa@linux.intel.com>

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