[ardb:arm64-bti-veneers 15/18] drivers/firmware/efi/fdtparams.c:140:9: error: implicit declaration of function 'early_memremap_ro'; did you mean 'arch_memremap_wb'?

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/ardb/linux.git arm64-bti-veneers
head:   82615c616e8cf0642701dd7adc233e43f761d580
commit: f973919abbc0179c7121f903d7b5d9495f2714a4 [15/18] efi: Pass EFI boot memmap struct address to core kernel
config: arm-randconfig-001-20260813 (https://download.01.org/0day-ci/archive/20260813/[email protected]/config)
compiler: arm-linux-gnueabi-gcc (GCC) 8.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260813/[email protected]/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 <[email protected]>
| Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/

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

   drivers/firmware/efi/fdtparams.c: In function 'efi_get_fdt_params':
>> drivers/firmware/efi/fdtparams.c:140:9: error: implicit declaration of function 'early_memremap_ro'; did you mean 'arch_memremap_wb'? [-Werror=implicit-function-declaration]
       bm = early_memremap_ro(memmap, sizeof(*bm));
            ^~~~~~~~~~~~~~~~~
            arch_memremap_wb
>> drivers/firmware/efi/fdtparams.c:140:7: warning: assignment to 'struct efi_boot_memmap *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
       bm = early_memremap_ro(memmap, sizeof(*bm));
          ^
>> drivers/firmware/efi/fdtparams.c:151:4: error: implicit declaration of function 'early_memunmap'; did you mean 'devm_memunmap'? [-Werror=implicit-function-declaration]
       early_memunmap(bm, sizeof(*bm));
       ^~~~~~~~~~~~~~
       devm_memunmap
   cc1: some warnings being treated as errors


vim +140 drivers/firmware/efi/fdtparams.c

    86	
    87	u64 __init efi_get_fdt_params(struct efi_memory_map_data *mm)
    88	{
    89		const void *fdt = initial_boot_params;
    90		unsigned long systab, memmap;
    91		int i, j, node;
    92		struct {
    93			void	*var;
    94			int	size;
    95		} target[] = {
    96			[SYSTAB] = { &systab,		sizeof(systab) },
    97			[MEMMAP] = { &memmap,		sizeof(memmap) },
    98	#ifdef CONFIG_XEN
    99			[MMBASE] = { &mm->phys_map,	sizeof(mm->phys_map) },
   100			[MMSIZE] = { &mm->size,		sizeof(mm->size) },
   101			[DCSIZE] = { &mm->desc_size,	sizeof(mm->desc_size) },
   102			[DCVERS] = { &mm->desc_version,	sizeof(mm->desc_version) },
   103	#endif
   104		};
   105	
   106		BUILD_BUG_ON(ARRAY_SIZE(target) != ARRAY_SIZE(name));
   107		BUILD_BUG_ON(ARRAY_SIZE(target) != ARRAY_SIZE(dt_params[0].params));
   108	
   109		if (!fdt)
   110			return 0;
   111	
   112		for (i = 0; i < ARRAY_SIZE(dt_params); i++) {
   113			node = fdt_path_offset(fdt, dt_params[i].path);
   114			if (node < 0)
   115				continue;
   116	
   117			if (efi_enabled(EFI_DBG))
   118				pr_info("Getting UEFI parameters from %s in DT:\n",
   119					dt_params[i].path);
   120	
   121			for (j = 0; j < ARRAY_SIZE(target); j++) {
   122				const char *pname = dt_params[i].params[j];
   123	
   124				if (pname[0] == '\0')
   125					continue;
   126	
   127				if (!efi_get_fdt_prop(fdt, node, pname, name[j],
   128						      target[j].var, target[j].size))
   129					continue;
   130				if (!j)
   131					goto notfound;
   132				pr_err("Can't find property '%s' in DT!\n", pname);
   133				return 0;
   134			}
   135			if (IS_ENABLED(CONFIG_XEN) && dt_params[i].paravirt) {
   136				set_bit(EFI_PARAVIRT, &efi.flags);
   137			} else {
   138				struct efi_boot_memmap *bm;
   139	
 > 140				bm = early_memremap_ro(memmap, sizeof(*bm));
   141				if (!bm) {
   142					pr_err("Cannot remap EFI boot memory map\n");
   143					return 0;
   144				}
   145	
   146				mm->phys_map		= memmap + sizeof(*bm);
   147				mm->size		= bm->map_size;
   148				mm->desc_size		= bm->desc_size;
   149				mm->desc_version	= bm->desc_ver;
   150	
 > 151				early_memunmap(bm, sizeof(*bm));

--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki