linux-kernel - [ammarfaizi2-block:viro/vfs/work.termios2 4/8] arch/alpha/kernel/termios.c:5:5: warning: no previous prototype for 'user_termio_to_kernel

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Date:   Sun, 21 Aug 2022 12:07:05 +0800
From:   kernel test robot <lkp@...el.com>
To:     Al Viro <viro@...iv.linux.org.uk>
Cc:     kbuild-all@...ts.01.org, Ammar Faizi <ammarfaizi2@...weeb.org>,
        GNU/Weeb Mailing List <gwml@...r.gnuweeb.org>,
        linux-kernel@...r.kernel.org
Subject: [ammarfaizi2-block:viro/vfs/work.termios2 4/8]
 arch/alpha/kernel/termios.c:5:5: warning: no previous prototype for
 'user_termio_to_kernel_termios'

tree:   https://github.com/ammarfaizi2/linux-block viro/vfs/work.termios2
head:   efc5ae91c846283431afc7bfc57e947bf1fd4158
commit: 7f3d795b7f3bd329e9b0eea427bcbbf205ee60d5 [4/8] termios: start unifying non-UAPI parts of asm/termios.h
config: alpha-allyesconfig (https://download.01.org/0day-ci/archive/20220821/202208211203.xvc2wVjR-lkp@intel.com/config)
compiler: alpha-linux-gcc (GCC) 12.1.0
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/7f3d795b7f3bd329e9b0eea427bcbbf205ee60d5
        git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block
        git fetch --no-tags ammarfaizi2-block viro/vfs/work.termios2
        git checkout 7f3d795b7f3bd329e9b0eea427bcbbf205ee60d5
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=alpha SHELL=/bin/bash arch/alpha/kernel/

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

All warnings (new ones prefixed by >>):

>> arch/alpha/kernel/termios.c:5:5: warning: no previous prototype for 'user_termio_to_kernel_termios' [-Wmissing-prototypes]
       5 | int user_termio_to_kernel_termios(struct ktermios *termios,
         |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> arch/alpha/kernel/termios.c:33:5: warning: no previous prototype for 'kernel_termios_to_user_termio' [-Wmissing-prototypes]
      33 | int kernel_termios_to_user_termio(struct termio __user *termio,
         |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~


vim +/user_termio_to_kernel_termios +5 arch/alpha/kernel/termios.c

8eb5cc958018d9 Al Viro 2022-08-20   4  
8eb5cc958018d9 Al Viro 2022-08-20  @5  int user_termio_to_kernel_termios(struct ktermios *termios,
8eb5cc958018d9 Al Viro 2022-08-20   6  						struct termio __user *termio)
8eb5cc958018d9 Al Viro 2022-08-20   7  {
8eb5cc958018d9 Al Viro 2022-08-20   8  	struct termio v;
8eb5cc958018d9 Al Viro 2022-08-20   9  	bool canon;
8eb5cc958018d9 Al Viro 2022-08-20  10  
8eb5cc958018d9 Al Viro 2022-08-20  11  	if (copy_from_user(&v, termio, sizeof(struct termio)))
8eb5cc958018d9 Al Viro 2022-08-20  12  		return -EFAULT;
8eb5cc958018d9 Al Viro 2022-08-20  13  
8eb5cc958018d9 Al Viro 2022-08-20  14  	termios->c_iflag = (0xffff0000 & termios->c_iflag) | v.c_iflag;
8eb5cc958018d9 Al Viro 2022-08-20  15  	termios->c_oflag = (0xffff0000 & termios->c_oflag) | v.c_oflag;
8eb5cc958018d9 Al Viro 2022-08-20  16  	termios->c_cflag = (0xffff0000 & termios->c_cflag) | v.c_cflag;
8eb5cc958018d9 Al Viro 2022-08-20  17  	termios->c_lflag = (0xffff0000 & termios->c_lflag) | v.c_lflag;
8eb5cc958018d9 Al Viro 2022-08-20  18  	termios->c_line = (0xffff0000 & termios->c_lflag) | v.c_line;
8eb5cc958018d9 Al Viro 2022-08-20  19  
8eb5cc958018d9 Al Viro 2022-08-20  20  	canon = v.c_lflag & ICANON;
8eb5cc958018d9 Al Viro 2022-08-20  21  	termios->c_cc[VINTR]  = v.c_cc[_VINTR];
8eb5cc958018d9 Al Viro 2022-08-20  22  	termios->c_cc[VQUIT]  = v.c_cc[_VQUIT];
8eb5cc958018d9 Al Viro 2022-08-20  23  	termios->c_cc[VERASE] = v.c_cc[_VERASE];
8eb5cc958018d9 Al Viro 2022-08-20  24  	termios->c_cc[VKILL]  = v.c_cc[_VKILL];
8eb5cc958018d9 Al Viro 2022-08-20  25  	termios->c_cc[VEOL2]  = v.c_cc[_VEOL2];
8eb5cc958018d9 Al Viro 2022-08-20  26  	termios->c_cc[VSWTC]  = v.c_cc[_VSWTC];
8eb5cc958018d9 Al Viro 2022-08-20  27  	termios->c_cc[canon ? VEOF : VMIN]  = v.c_cc[_VEOF];
8eb5cc958018d9 Al Viro 2022-08-20  28  	termios->c_cc[canon ? VEOL : VTIME] = v.c_cc[_VEOL];
8eb5cc958018d9 Al Viro 2022-08-20  29  
8eb5cc958018d9 Al Viro 2022-08-20  30  	return 0;
8eb5cc958018d9 Al Viro 2022-08-20  31  }
8eb5cc958018d9 Al Viro 2022-08-20  32  
8eb5cc958018d9 Al Viro 2022-08-20 @33  int kernel_termios_to_user_termio(struct termio __user *termio,

:::::: The code at line 5 was first introduced by commit
:::::: 8eb5cc958018d99c96d15cf9637fd07531551802 termios: uninline conversion helpers

:::::: TO: Al Viro <viro@...iv.linux.org.uk>
:::::: CC: Al Viro <viro@...iv.linux.org.uk>

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp