linux-kernel - arch/mips/kernel/relocate.c:41:12: warning: no previous prototype for 'plat_post

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Message-ID: <202111180954.wgISsQA0-lkp@intel.com>
Date:   Thu, 18 Nov 2021 09:45:09 +0800
From:   kernel test robot <lkp@...el.com>
To:     Jinyang He <hejinyang@...ngson.cn>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>
Subject: arch/mips/kernel/relocate.c:41:12: warning: no previous prototype
 for 'plat_post_relocation'

Hi Jinyang,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   42eb8fdac2fc5d62392dcfcf0253753e821a97b0
commit: a307a4ce9ecd2e23c71318201330d9d648b3f818 MIPS: Loongson64: Add KASLR support
date:   12 months ago
config: mips-randconfig-r033-20211116 (attached as .config)
compiler: mips64el-linux-gcc (GCC) 11.2.0
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
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a307a4ce9ecd2e23c71318201330d9d648b3f818
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout a307a4ce9ecd2e23c71318201330d9d648b3f818
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=mips 

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

All warnings (new ones prefixed by >>):

>> arch/mips/kernel/relocate.c:41:12: warning: no previous prototype for 'plat_post_relocation' [-Wmissing-prototypes]
      41 | int __weak plat_post_relocation(long offset)
         |            ^~~~~~~~~~~~~~~~~~~~
   arch/mips/kernel/relocate.c:135:12: warning: no previous prototype for 'do_relocations' [-Wmissing-prototypes]
     135 | int __init do_relocations(void *kbase_old, void *kbase_new, long offset)
         |            ^~~~~~~~~~~~~~
>> arch/mips/kernel/relocate.c:304:14: warning: no previous prototype for 'relocate_kernel' [-Wmissing-prototypes]
     304 | void *__init relocate_kernel(void)
         |              ^~~~~~~~~~~~~~~
   arch/mips/kernel/relocate.c:415:6: warning: no previous prototype for 'show_kernel_relocation' [-Wmissing-prototypes]
     415 | void show_kernel_relocation(const char *level)
         |      ^~~~~~~~~~~~~~~~~~~~~~


vim +/plat_post_relocation +41 arch/mips/kernel/relocate.c

4c9fff362261d6 Marcin Nowakowski 2016-11-23  35  
8cc709d7d4f013 Steven J. Hill    2016-12-09  36  /*
8cc709d7d4f013 Steven J. Hill    2016-12-09  37   * This function may be defined for a platform to perform any post-relocation
8cc709d7d4f013 Steven J. Hill    2016-12-09  38   * fixup necessary.
8cc709d7d4f013 Steven J. Hill    2016-12-09  39   * Return non-zero to abort relocation
8cc709d7d4f013 Steven J. Hill    2016-12-09  40   */
8cc709d7d4f013 Steven J. Hill    2016-12-09 @41  int __weak plat_post_relocation(long offset)
8cc709d7d4f013 Steven J. Hill    2016-12-09  42  {
8cc709d7d4f013 Steven J. Hill    2016-12-09  43  	return 0;
8cc709d7d4f013 Steven J. Hill    2016-12-09  44  }
8cc709d7d4f013 Steven J. Hill    2016-12-09  45  

:::::: The code at line 41 was first introduced by commit
:::::: 8cc709d7d4f013f51d38ceb2e3c8c82d230cf457 MIPS: Relocatable: Provide plat_post_relocation hook

:::::: TO: Steven J. Hill <Steven.Hill@...ium.com>
:::::: CC: Ralf Baechle <ralf@...ux-mips.org>

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

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