[leon-rdma:dma-split-v1 4/17] arch/powerpc/include/asm/pci.h:49:42: warning: declaration of 'struct dma_map_ops' will not be visible outside of this function

[leon-rdma:dma-split-v1 4/17] arch/powerpc/include/asm/pci.h:49:42: warning: declaration of 'struct dma_map_ops' will not be visible outside of this function

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/leon/linux-rdma.git dma-split-v1
head:   b66ed91ccee0e8e645a07f54f0e39fe9ff4f03c9
commit: c9054c6f609d4d89977171559cd16e48e5fdb8b8 [4/17] dma-mapping: check if IOVA can be used
config: powerpc-randconfig-001-20240501 (https://download.01.org/0day-ci/archive/20240501/202405010612.RhFViKjr-lkp@intel.com/config)
compiler: clang version 15.0.7 (https://github.com/llvm/llvm-project.git 8dfdcc7b7bf66834a761bd8de445840ef68e4d1a)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240501/202405010612.RhFViKjr-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/202405010612.RhFViKjr-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from kernel/dma/direct.c:10:
   In file included from include/linux/dma-map-ops.h:12:
   In file included from include/linux/pci.h:2106:
>> arch/powerpc/include/asm/pci.h:49:42: warning: declaration of 'struct dma_map_ops' will not be visible outside of this function [-Wvisibility]
   void __init set_pci_dma_ops(const struct dma_map_ops *dma_ops);
                                            ^
   1 warning generated.
--
   In file included from kernel/dma/mapping.c:11:
   In file included from include/linux/dma-map-ops.h:12:
   In file included from include/linux/pci.h:2106:
>> arch/powerpc/include/asm/pci.h:49:42: warning: declaration of 'struct dma_map_ops' will not be visible outside of this function [-Wvisibility]
   void __init set_pci_dma_ops(const struct dma_map_ops *dma_ops);
                                            ^
   kernel/dma/mapping.c:877:6: error: call to undeclared function 'cc_platform_has'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration]
           if (cc_platform_has(CC_ATTR_MEM_ENCRYPT)) {
               ^
   kernel/dma/mapping.c:877:22: error: use of undeclared identifier 'CC_ATTR_MEM_ENCRYPT'
           if (cc_platform_has(CC_ATTR_MEM_ENCRYPT)) {
                               ^
   1 warning and 2 errors generated.


vim +49 arch/powerpc/include/asm/pci.h

^1da177e4c3f41 include/asm-ppc64/pci.h        Linus Torvalds 2005-04-16  47  
4fc665b88a79a4 arch/powerpc/include/asm/pci.h Becky Bruce    2008-09-12  48  #ifdef CONFIG_PCI
d276960d9296b6 arch/powerpc/include/asm/pci.h Nick Child     2021-12-16 @49  void __init set_pci_dma_ops(const struct dma_map_ops *dma_ops);
4fc665b88a79a4 arch/powerpc/include/asm/pci.h Becky Bruce    2008-09-12  50  #else	/* CONFIG_PCI */
4fc665b88a79a4 arch/powerpc/include/asm/pci.h Becky Bruce    2008-09-12  51  #define set_pci_dma_ops(d)
4fc665b88a79a4 arch/powerpc/include/asm/pci.h Becky Bruce    2008-09-12  52  #endif
4fc665b88a79a4 arch/powerpc/include/asm/pci.h Becky Bruce    2008-09-12  53  

:::::: The code at line 49 was first introduced by commit
:::::: d276960d9296b6a9074795fe60a513abf8474e35 powerpc/kernel: Add __init attribute to eligible functions

:::::: TO: Nick Child <nick.child@ibm.com>
:::::: CC: Michael Ellerman <mpe@ellerman.id.au>

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