[akpm-mm:mm-new 122/169] include/asm-generic/fixmap.h:77:9: error: implicit declaration of function '__set_fixmap'; did you mean 'set_fixmap'?

[akpm-mm:mm-new 122/169] include/asm-generic/fixmap.h:77:9: error: implicit declaration of function '__set_fixmap'; did you mean 'set_fixmap'?

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-new
head:   0587fb0c820d86e5b77a975680d79b5176d09abb
commit: 4fee62a8f7a8a78b1e36d2b5a7a2030b18cccd56 [122/169] include/asm-generic/fixmap.h: reimplement nasty macros in C
config: csky-allmodconfig (https://download.01.org/0day-ci/archive/20260430/202604300401.oBmk76Q3-lkp@intel.com/config)
compiler: csky-linux-gcc (GCC) 15.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260430/202604300401.oBmk76Q3-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/202604300401.oBmk76Q3-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from arch/csky/include/asm/fixmap.h:27,
                    from arch/csky/include/asm/pgtable.h:6,
                    from include/linux/pgtable.h:6,
                    from arch/csky/include/asm/io.h:6,
                    from include/linux/io.h:12,
                    from include/linux/irq.h:20,
                    from include/asm-generic/hardirq.h:17,
                    from ./arch/csky/include/generated/asm/hardirq.h:1,
                    from include/linux/hardirq.h:11,
                    from include/linux/interrupt.h:11,
                    from include/linux/kernel_stat.h:8,
                    from arch/csky/kernel/asm-offsets.c:6:
   include/asm-generic/fixmap.h: In function '__set_fixmap_offset':
>> include/asm-generic/fixmap.h:77:9: error: implicit declaration of function '__set_fixmap'; did you mean 'set_fixmap'? [-Wimplicit-function-declaration]
      77 |         __set_fixmap(idx, phys, flags);
         |         ^~~~~~~~~~~~
         |         set_fixmap
   include/asm-generic/fixmap.h: In function 'set_fixmap_offset':
   include/asm-generic/fixmap.h:48:28: error: 'PAGE_KERNEL' undeclared (first use in this function); did you mean 'SI_KERNEL'?
      48 | #define FIXMAP_PAGE_NORMAL PAGE_KERNEL
         |                            ^~~~~~~~~~~
   include/asm-generic/fixmap.h:84:47: note: in expansion of macro 'FIXMAP_PAGE_NORMAL'
      84 |         return __set_fixmap_offset(idx, phys, FIXMAP_PAGE_NORMAL);
         |                                               ^~~~~~~~~~~~~~~~~~
   include/asm-generic/fixmap.h:48:28: note: each undeclared identifier is reported only once for each function it appears in
      48 | #define FIXMAP_PAGE_NORMAL PAGE_KERNEL
         |                            ^~~~~~~~~~~
   include/asm-generic/fixmap.h:84:47: note: in expansion of macro 'FIXMAP_PAGE_NORMAL'
      84 |         return __set_fixmap_offset(idx, phys, FIXMAP_PAGE_NORMAL);
         |                                               ^~~~~~~~~~~~~~~~~~
   include/asm-generic/fixmap.h: In function 'set_fixmap_nocache':
   include/asm-generic/fixmap.h:54:29: error: 'PAGE_KERNEL_NOCACHE' undeclared (first use in this function)
      54 | #define FIXMAP_PAGE_NOCACHE PAGE_KERNEL_NOCACHE
         |                             ^~~~~~~~~~~~~~~~~~~
   include/asm-generic/fixmap.h:93:33: note: in expansion of macro 'FIXMAP_PAGE_NOCACHE'
      93 |         __set_fixmap(idx, phys, FIXMAP_PAGE_NOCACHE);
         |                                 ^~~~~~~~~~~~~~~~~~~
   include/asm-generic/fixmap.h: In function 'set_fixmap_offset_nocache':
   include/asm-generic/fixmap.h:54:29: error: 'PAGE_KERNEL_NOCACHE' undeclared (first use in this function)
      54 | #define FIXMAP_PAGE_NOCACHE PAGE_KERNEL_NOCACHE
         |                             ^~~~~~~~~~~~~~~~~~~
   include/asm-generic/fixmap.h:99:40: note: in expansion of macro 'FIXMAP_PAGE_NOCACHE'
      99 |         __set_fixmap_offset(idx, phys, FIXMAP_PAGE_NOCACHE);
         |                                        ^~~~~~~~~~~~~~~~~~~
   make[3]: *** [scripts/Makefile.build:184: arch/csky/kernel/asm-offsets.s] Error 1
   make[3]: Target 'prepare' not remade because of errors.
   make[2]: *** [Makefile:1373: prepare0] Error 2
   make[2]: Target 'prepare' not remade because of errors.
   make[1]: *** [Makefile:248: __sub-make] Error 2
   make[1]: Target 'prepare' not remade because of errors.
   make: *** [Makefile:248: __sub-make] Error 2
   make: Target 'prepare' not remade because of errors.


vim +77 include/asm-generic/fixmap.h

    72	
    73	/* Return a pointer with offset calculated */
    74	static inline unsigned long
    75	__set_fixmap_offset(enum fixed_addresses idx, phys_addr_t phys, pgprot_t flags)
    76	{
  > 77		__set_fixmap(idx, phys, flags);
    78		return fix_to_virt(idx) + (phys & (PAGE_SIZE - 1));
    79	}
    80	

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