[akpm-mm:mm-new 422/440] arch/sparc/include/asm/pgtable_32.h:423:9: error: implicit declaration of function 'remap_pfn_range_prepare'; did you mean 'io_remap_pfn_range_prepare'?

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

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-new
head:   31690ac95cb30fd036eeda36844c6e2820685e7c
commit: 04ff8d62985b8be5f5fc8547a828fbb051c2f927 [422/440] mm: introduce io_remap_pfn_range_[prepare, complete]()
config: sparc-allnoconfig (https://download.01.org/0day-ci/archive/20250912/202509120538.KccGKzFg-lkp@intel.com/config)
compiler: sparc-linux-gcc (GCC) 15.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250912/202509120538.KccGKzFg-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/202509120538.KccGKzFg-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from arch/sparc/include/asm/pgtable.h:7,
                    from arch/sparc/include/asm/viking.h:13,
                    from arch/sparc/include/asm/mbus.h:12,
                    from arch/sparc/include/asm/elf_32.h:94,
                    from arch/sparc/include/asm/elf.h:7,
                    from include/linux/elf.h:6,
                    from include/linux/module.h:20,
                    from init/main.c:18:
   arch/sparc/include/asm/pgtable_32.h: In function 'io_remap_pfn_range_prepare':
>> arch/sparc/include/asm/pgtable_32.h:423:9: error: implicit declaration of function 'remap_pfn_range_prepare'; did you mean 'io_remap_pfn_range_prepare'? [-Wimplicit-function-declaration]
     423 |         remap_pfn_range_prepare(desc, calc_io_remap_pfn(pfn));
         |         ^~~~~~~~~~~~~~~~~~~~~~~
         |         io_remap_pfn_range_prepare
   arch/sparc/include/asm/pgtable_32.h: In function 'io_remap_pfn_range_complete':
>> arch/sparc/include/asm/pgtable_32.h:431:16: error: implicit declaration of function 'remap_pfn_range_complete'; did you mean 'io_remap_pfn_range_complete'? [-Wimplicit-function-declaration]
     431 |         return remap_pfn_range_complete(vma, addr, calc_io_remap_pfn(pfn),
         |                ^~~~~~~~~~~~~~~~~~~~~~~~
         |                io_remap_pfn_range_complete
   In file included from include/linux/ring_buffer.h:5,
                    from include/linux/trace_events.h:6,
                    from include/trace/syscall.h:7,
                    from include/linux/syscalls.h:95,
                    from init/main.c:22:
   include/linux/mm.h: At top level:
   include/linux/mm.h:3643:6: warning: conflicting types for 'remap_pfn_range_prepare'; have 'void(struct vm_area_desc *, long unsigned int)'
    3643 | void remap_pfn_range_prepare(struct vm_area_desc *desc, unsigned long pfn);
         |      ^~~~~~~~~~~~~~~~~~~~~~~
   arch/sparc/include/asm/pgtable_32.h:423:9: note: previous implicit declaration of 'remap_pfn_range_prepare' with type 'void(struct vm_area_desc *, long unsigned int)'
     423 |         remap_pfn_range_prepare(desc, calc_io_remap_pfn(pfn));
         |         ^~~~~~~~~~~~~~~~~~~~~~~


vim +423 arch/sparc/include/asm/pgtable_32.h

   419	
   420	static inline void io_remap_pfn_range_prepare(struct vm_area_desc *desc, unsigned long pfn,
   421			unsigned long size)
   422	{
 > 423		remap_pfn_range_prepare(desc, calc_io_remap_pfn(pfn));
   424	}
   425	#define io_remap_pfn_range_prepare io_remap_pfn_range_prepare
   426	
   427	static inline int io_remap_pfn_range_complete(struct vm_area_struct *vma,
   428			unsigned long addr, unsigned long pfn, unsigned long size,
   429			pgprot_t prot)
   430	{
 > 431		return remap_pfn_range_complete(vma, addr, calc_io_remap_pfn(pfn),
   432				size, prot);
   433	}
   434	#define io_remap_pfn_range_complete io_remap_pfn_range_complete
   435	

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