[bcain:bcain/qemu_boot 26/62] arch/hexagon/kernel/devtree.c:17:13: warning: no previous prototype for function 'early_init_dt_add_memory_arch'

[bcain:bcain/qemu_boot 26/62] arch/hexagon/kernel/devtree.c:17:13: warning: no previous prototype for function 'early_init_dt_add_memory_arch'

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/bcain/linux.git bcain/qemu_boot
head:   a74f943885b7a0e655c7c47d4d02f852c12c1ce1
commit: 5ff1ea15270dcaa04752f16f8a9b055a6b013c6f [26/62] hexagon: add memory management enhancements
config: hexagon-randconfig-002-20260703 (https://download.01.org/0day-ci/archive/20260704/202607040014.To1xcY2c-lkp@intel.com/config)
compiler: clang version 23.0.0git (https://github.com/llvm/llvm-project 0a2fb2a2269da0e2a3e230beb6cad39ca314db33)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260704/202607040014.To1xcY2c-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/202607040014.To1xcY2c-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> arch/hexagon/kernel/devtree.c:17:13: warning: no previous prototype for function 'early_init_dt_add_memory_arch' [-Wmissing-prototypes]
      17 | void __init early_init_dt_add_memory_arch(u64 base, u64 size)
         |             ^
   arch/hexagon/kernel/devtree.c:17:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
      17 | void __init early_init_dt_add_memory_arch(u64 base, u64 size)
         | ^
         | static 
   arch/hexagon/kernel/devtree.c:50:6: error: call to undeclared function 'of_get_flat_dt_prop'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
      50 |         p = of_get_flat_dt_prop(node, "bootargs", &l);
         |             ^
   arch/hexagon/kernel/devtree.c:50:4: error: incompatible integer to pointer conversion assigning to 'char *' from 'int' [-Wint-conversion]
      50 |         p = of_get_flat_dt_prop(node, "bootargs", &l);
         |           ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   arch/hexagon/kernel/devtree.c:130:12: error: call to undeclared function 'of_get_flat_dt_root'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     130 |         dt_root = of_get_flat_dt_root();
         |                   ^
   arch/hexagon/kernel/devtree.c:132:15: error: call to undeclared function 'of_flat_dt_match_machine'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     132 |         mdesc_best = of_flat_dt_match_machine(NULL, arch_get_next_mach);
         |                      ^
   arch/hexagon/kernel/devtree.c:132:13: error: incompatible integer to pointer conversion assigning to 'const struct machine_desc *' from 'int' [-Wint-conversion]
     132 |         mdesc_best = of_flat_dt_match_machine(NULL, arch_get_next_mach);
         |                    ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   arch/hexagon/kernel/devtree.c:142:9: error: call to undeclared function 'early_init_dt_scan_root'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     142 |         early_init_dt_scan_root();
         |         ^
   arch/hexagon/kernel/devtree.c:147:2: error: call to undeclared function 'early_init_dt_scan_chosen'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     147 |         early_init_dt_scan_chosen(boot_command_line);
         |         ^
   arch/hexagon/kernel/devtree.c:107:16: warning: variable 'dt_root' set but not used [-Wunused-but-set-variable]
     107 |         unsigned long dt_root;
         |                       ^
   2 warnings and 7 errors generated.


vim +/early_init_dt_add_memory_arch +17 arch/hexagon/kernel/devtree.c

9f79ac50516cbd Richard Kuo 2025-08-18  15  
9f79ac50516cbd Richard Kuo 2025-08-18  16  /*  called via early_init_dt_scan_memory?  */
9f79ac50516cbd Richard Kuo 2025-08-18 @17  void __init early_init_dt_add_memory_arch(u64 base, u64 size)
9f79ac50516cbd Richard Kuo 2025-08-18  18  {
9f79ac50516cbd Richard Kuo 2025-08-18  19  	//  Cheesy solution is to just twiddle bootmem_lastpg
9f79ac50516cbd Richard Kuo 2025-08-18  20  	BUG();  ///  XXX Todo fixme
9f79ac50516cbd Richard Kuo 2025-08-18  21  }
9f79ac50516cbd Richard Kuo 2025-08-18  22  

:::::: The code at line 17 was first introduced by commit
:::::: 9f79ac50516cbd38e6d96df3e6da44a66921018d hexagon: add device tree support

:::::: TO: Richard Kuo <rkuo@quicinc.com>
:::::: CC: Brian Cain <brian.cain@oss.qualcomm.com>

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https://github.com/intel/lkp-tests/wiki