linux-kernel - [ammarfaizi2-block:palmer/linux/riscv-compat 18/20] arch/riscv/include/asm/signal32.h:10:5: warning: no previous prototype for 'compat_setup_rt

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Date:   Wed, 27 Apr 2022 14:28:24 +0800
From:   kernel test robot <lkp@...el.com>
To:     Guo Ren <guoren@...ux.alibaba.com>
Cc:     kbuild-all@...ts.01.org,
        GNU/Weeb Mailing List <gwml@...r.gnuweeb.org>,
        linux-kernel@...r.kernel.org, Palmer Dabbelt <palmer@...osinc.com>
Subject: [ammarfaizi2-block:palmer/linux/riscv-compat 18/20]
 arch/riscv/include/asm/signal32.h:10:5: warning: no previous prototype for
 'compat_setup_rt_frame'

tree:   https://github.com/ammarfaizi2/linux-block palmer/linux/riscv-compat
head:   8d05fa26dd28024fc3f915bf06be41ab7c3204ab
commit: 299073d795e482ae6a762105fbc3953ec445badd [18/20] riscv: compat: signal: Add rt_frame implementation
config: riscv-randconfig-r042-20220425 (https://download.01.org/0day-ci/archive/20220427/202204271410.2nEyxccE-lkp@intel.com/config)
compiler: riscv64-linux-gcc (GCC) 11.3.0
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://github.com/ammarfaizi2/linux-block/commit/299073d795e482ae6a762105fbc3953ec445badd
        git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block
        git fetch --no-tags ammarfaizi2-block palmer/linux/riscv-compat
        git checkout 299073d795e482ae6a762105fbc3953ec445badd
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash arch/riscv/kernel/

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 >>):

   In file included from arch/riscv/kernel/signal.c:18:
>> arch/riscv/include/asm/signal32.h:10:5: warning: no previous prototype for 'compat_setup_rt_frame' [-Wmissing-prototypes]
      10 | int compat_setup_rt_frame(struct ksignal *ksig, sigset_t *set,
         |     ^~~~~~~~~~~~~~~~~~~~~
   arch/riscv/kernel/signal.c:316:27: warning: no previous prototype for 'do_notify_resume' [-Wmissing-prototypes]
     316 | asmlinkage __visible void do_notify_resume(struct pt_regs *regs,
         |                           ^~~~~~~~~~~~~~~~


vim +/compat_setup_rt_frame +10 arch/riscv/include/asm/signal32.h

     5	
     6	#if IS_ENABLED(CONFIG_COMPAT)
     7	int compat_setup_rt_frame(struct ksignal *ksig, sigset_t *set,
     8				  struct pt_regs *regs);
     9	#else
  > 10	int compat_setup_rt_frame(struct ksignal *ksig, sigset_t *set,
    11				  struct pt_regs *regs)
    12	{
    13		return -1;
    14	}
    15	#endif
    16	

-- 
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