[arnd-playground:randconfig-7.3-next 609/673] include/asm-generic/io.h:1099:16: error: implicit declaration of function '__pa'

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

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/arnd/playground.git randconfig-7.3-next
head:   0a1affa74ef2f2c5c5ee74fc604e47a1aefdd286
commit: 5820acdc34867db3abad330764e2069a3fb15216 [609/673] Revert "asm/io.h: move virt_to_phys/phys_to_virt"
config: sparc-allnoconfig (https://download.01.org/0day-ci/archive/20260925/202609252034.msEqqqSo-lkp@intel.com/config)
compiler: sparc-linux-gcc (GCC) 16.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260925/202609252034.msEqqqSo-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/202609252034.msEqqqSo-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from arch/sparc/include/asm/io_32.h:21,
                    from arch/sparc/include/asm/io.h:7,
                    from include/linux/io.h:12,
                    from lib/iomem_copy.c:8:
   include/asm-generic/io.h: In function 'virt_to_phys':
>> include/asm-generic/io.h:1099:16: error: implicit declaration of function '__pa' [-Wimplicit-function-declaration]
    1099 |         return __pa((unsigned long)address);
         |                ^~~~
   include/asm-generic/io.h: In function 'phys_to_virt':
>> include/asm-generic/io.h:1107:16: error: implicit declaration of function '__va' [-Wimplicit-function-declaration]
    1107 |         return __va(address);
         |                ^~~~
>> include/asm-generic/io.h:1107:16: error: returning 'int' from a function with return type 'void *' makes pointer from integer without a cast [-Wint-conversion]
    1107 |         return __va(address);
         |                ^~~~~~~~~~~~~
   include/linux/io.h: At top level:
   include/linux/io.h:28:47: error: unknown type name 'pgprot_t'
      28 |                        phys_addr_t phys_addr, pgprot_t prot);
         |                                               ^~~~~~~~
   include/linux/io.h:30:44: error: unknown type name 'pgprot_t'
      30 |                     phys_addr_t phys_addr, pgprot_t prot);
         |                                            ^~~~~~~~
   include/linux/io.h:80:1: warning: data definition has no type or storage class
      80 | pgprot_t __init early_memremap_pgprot_adjust(resource_size_t phys_addr,
         | ^~~~~~~~
   include/linux/io.h:80:1: error: type defaults to 'int' in declaration of 'pgprot_t' [-Wimplicit-int]
   include/linux/io.h:80:1: warning: 'cold' attribute ignored [-Wattributes]
   include/linux/io.h:80:17: error: expected ',' or ';' before 'early_memremap_pgprot_adjust'
      80 | pgprot_t __init early_memremap_pgprot_adjust(resource_size_t phys_addr,
         |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~


vim +/__pa +1099 include/asm-generic/io.h

  1090	
  1091	/*
  1092	 * Change virtual addresses to physical addresses and vv.
  1093	 * These are pretty trivial
  1094	 */
  1095	#ifndef virt_to_phys
  1096	#define virt_to_phys virt_to_phys
  1097	static inline unsigned long virt_to_phys(volatile void *address)
  1098	{
> 1099		return __pa((unsigned long)address);
  1100	}
  1101	#endif
  1102	
  1103	#ifndef phys_to_virt
  1104	#define phys_to_virt phys_to_virt
  1105	static inline void *phys_to_virt(unsigned long address)
  1106	{
> 1107		return __va(address);
  1108	}
  1109	#endif
  1110	

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