[linux-next:master 122/4212] arch/arm/boot/compressed/atags_to_fdt.c:129:5: warning: stack frame size (1344) exceeds limit (1280) in 'atags_to_fdt'

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   b3c0a155ef77550d48f6eb7c6fdd6075764a5622
commit: 672513bf583157cc088a32e75bd850dd9f81564c [122/4212] ARM: decompressor: disable stack protector
config: arm-buildonly-randconfig-r004-20220207 (https://download.01.org/0day-ci/archive/20220208/202202080808.lrsdrLFj-lkp@xxxxxxxxx/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 0d8850ae2cae85d49bea6ae0799fa41c7202c05c)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install arm cross compiling tool for clang build
        # apt-get install binutils-arm-linux-gnueabi
        # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=672513bf583157cc088a32e75bd850dd9f81564c
        git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
        git fetch --no-tags linux-next master
        git checkout 672513bf583157cc088a32e75bd850dd9f81564c
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All warnings (new ones prefixed by >>):

   arch/arm/boot/compressed/atags_to_fdt.c:129:5: warning: no previous prototype for function 'atags_to_fdt' [-Wmissing-prototypes]
   int atags_to_fdt(void *atag_list, void *fdt, int total_space)
       ^
   arch/arm/boot/compressed/atags_to_fdt.c:129:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   int atags_to_fdt(void *atag_list, void *fdt, int total_space)
   ^
   static 
>> arch/arm/boot/compressed/atags_to_fdt.c:129:5: warning: stack frame size (1344) exceeds limit (1280) in 'atags_to_fdt' [-Wframe-larger-than]
   int atags_to_fdt(void *atag_list, void *fdt, int total_space)
       ^
   2 warnings generated.


vim +/atags_to_fdt +129 arch/arm/boot/compressed/atags_to_fdt.c

31d0b9f9982f8e Ben Dooks          2018-10-12  120  
b90b9a38251e9c Nicolas Pitre      2011-09-13  121  /*
b90b9a38251e9c Nicolas Pitre      2011-09-13  122   * Convert and fold provided ATAGs into the provided FDT.
b90b9a38251e9c Nicolas Pitre      2011-09-13  123   *
4716e2e34a22a8 Geert Uytterhoeven 2021-05-19  124   * Return values:
b90b9a38251e9c Nicolas Pitre      2011-09-13  125   *    = 0 -> pretend success
b90b9a38251e9c Nicolas Pitre      2011-09-13  126   *    = 1 -> bad ATAG (may retry with another possible ATAG pointer)
b90b9a38251e9c Nicolas Pitre      2011-09-13  127   *    < 0 -> error from libfdt
b90b9a38251e9c Nicolas Pitre      2011-09-13  128   */
b90b9a38251e9c Nicolas Pitre      2011-09-13 @129  int atags_to_fdt(void *atag_list, void *fdt, int total_space)

:::::: The code at line 129 was first introduced by commit
:::::: b90b9a38251e9c89c34179eccde57411ceb5f1aa ARM: zImage: allow supplementing appended DTB with traditional ATAG data

:::::: TO: Nicolas Pitre <nicolas.pitre@xxxxxxxxxx>
:::::: CC: Nicolas Pitre <nico@xxxxxxxxxxx>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx




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