[jgunthorpe:for-vasant 2/10] include/linux/iommu.h:1103:1: error: declaration of anonymous struct must be a definition

[kernel test robot <lkp@intel.com>]

tree:   https://github.com/jgunthorpe/linux for-vasant
head:   8aa0df6ce0d35430baeac4ee5e0ea77f82cf2ead
commit: 9d7523756e213acff67f3b9264211becfbb5b7bb [2/10] iommu: Introduce iommu_paging_domain_alloc_flags()
config: x86_64-allnoconfig (https://download.01.org/0day-ci/archive/20241005/202410051943.59KUI762-lkp@intel.com/config)
compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241005/202410051943.59KUI762-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202410051943.59KUI762-lkp@intel.com/

All error/warnings (new ones prefixed by >>):

   In file included from kernel/fork.c:104:
>> include/linux/iommu.h:1103:1: error: declaration of anonymous struct must be a definition
    1103 | struct inline iommu_domain *iommu_paging_domain_alloc_flags(struct device *dev,
         | ^
>> include/linux/iommu.h:1103:1: warning: declaration does not declare anything [-Wmissing-declarations]
>> include/linux/iommu.h:1478:48: warning: declaration of 'struct msi_desc' will not be visible outside of this function [-Wvisibility]
    1478 | static inline int iommu_dma_prepare_msi(struct msi_desc *desc, phys_addr_t msi_addr)
         |                                                ^
   include/linux/iommu.h:1483:53: warning: declaration of 'struct msi_desc' will not be visible outside of this function [-Wvisibility]
    1483 | static inline void iommu_dma_compose_msi_msg(struct msi_desc *desc, struct msi_msg *msg)
         |                                                     ^
   3 warnings and 1 error generated.
--
   In file included from arch/x86/kernel/pci-dma.c:4:
>> include/linux/iommu.h:1103:1: error: declaration of anonymous struct must be a definition
    1103 | struct inline iommu_domain *iommu_paging_domain_alloc_flags(struct device *dev,
         | ^
>> include/linux/iommu.h:1103:1: warning: declaration does not declare anything [-Wmissing-declarations]
>> include/linux/iommu.h:1478:48: warning: declaration of 'struct msi_desc' will not be visible outside of this function [-Wvisibility]
    1478 | static inline int iommu_dma_prepare_msi(struct msi_desc *desc, phys_addr_t msi_addr)
         |                                                ^
   include/linux/iommu.h:1483:53: warning: declaration of 'struct msi_desc' will not be visible outside of this function [-Wvisibility]
    1483 | static inline void iommu_dma_compose_msi_msg(struct msi_desc *desc, struct msi_msg *msg)
         |                                                     ^
>> arch/x86/kernel/pci-dma.c:162:4: error: call to undeclared function 'iommu_set_default_passthrough'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     162 |                         iommu_set_default_passthrough(true);
         |                         ^
>> arch/x86/kernel/pci-dma.c:164:4: error: call to undeclared function 'iommu_set_default_translated'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     164 |                         iommu_set_default_translated(true);
         |                         ^
   3 warnings and 3 errors generated.
--
   In file included from drivers/base/platform.c:33:
>> include/linux/iommu.h:1103:1: error: declaration of anonymous struct must be a definition
    1103 | struct inline iommu_domain *iommu_paging_domain_alloc_flags(struct device *dev,
         | ^
>> include/linux/iommu.h:1103:1: warning: declaration does not declare anything [-Wmissing-declarations]
>> drivers/base/platform.c:1457:8: error: call to undeclared function 'iommu_device_use_default_domain'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
    1457 |         ret = iommu_device_use_default_domain(dev);
         |               ^
>> drivers/base/platform.c:1469:3: error: call to undeclared function 'iommu_device_unuse_default_domain'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
    1469 |                 iommu_device_unuse_default_domain(dev);
         |                 ^
   1 warning and 3 errors generated.


vim +1103 include/linux/iommu.h

  1102	
> 1103	struct inline iommu_domain *iommu_paging_domain_alloc_flags(struct device *dev,
  1104								    unsigned int flags)
  1105	{
  1106		return ERR_PTR(-ENODEV);
  1107	}
  1108	

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