arch/mips/boot/compressed/uart-16550.c:44:6: warning: no previous prototype for 'putc'
From: kernel test robot
Date: Mon Apr 04 2022 - 18:57:19 EST
Hi YunQiang,
FYI, the error/warning still remains.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 3123109284176b1532874591f7c81f3837bbdc17
commit: 31b2f3dc851c65fee288612432c4fc956f1a264e MIPS: enable both vmlinux.gz.itb and vmlinuz for generic
date: 3 months ago
config: mips-randconfig-r033-20220404 (https://download.01.org/0day-ci/archive/20220405/202204050616.vblP4zPu-lkp@xxxxxxxxx/config)
compiler: mipsel-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=31b2f3dc851c65fee288612432c4fc956f1a264e
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 31b2f3dc851c65fee288612432c4fc956f1a264e
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=mips 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/mips/boot/compressed/uart-16550.c:44:6: warning: no previous prototype for 'putc' [-Wmissing-prototypes]
44 | void putc(char c)
| ^~~~
vim +/putc +44 arch/mips/boot/compressed/uart-16550.c
1b93b3c3e94be2 Wu Zhangjin 2009-10-14 43
1b93b3c3e94be2 Wu Zhangjin 2009-10-14 @44 void putc(char c)
:::::: The code at line 44 was first introduced by commit
:::::: 1b93b3c3e94be2605759735a89fc935ba5f58dcf MIPS: Add support for GZIP / BZIP2 / LZMA compressed kernel images
:::::: TO: Wu Zhangjin <wuzhangjin@xxxxxxxxx>
:::::: CC: Ralf Baechle <ralf@xxxxxxxxxxxxxx>
--
0-DAY CI Kernel Test Service
https://01.org/lkp