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Date: Fri, 22 Apr 2022 21:13:27 +0800
From: kernel test robot <lkp@...el.com>
To: YunQiang Su <yunqiang.su@...united.com>
Cc: llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
linux-kernel@...r.kernel.org,
Thomas Bogendoerfer <tsbogend@...ha.franken.de>
Subject: arch/mips/boot/compressed/../../lib/bswapdi.c:5:28: warning: no
previous prototype for function '__bswapdi2'
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: d569e86915b7f2f9795588591c8d5ea0b66481cb
commit: 31b2f3dc851c65fee288612432c4fc956f1a264e MIPS: enable both vmlinux.gz.itb and vmlinuz for generic
date: 4 months ago
config: mips-randconfig-r003-20220422 (https://download.01.org/0day-ci/archive/20220422/202204222130.Bc3dL9dC-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 5bd87350a5ae429baf8f373cb226a57b62f87280)
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 mips cross compiling tool for clang build
# apt-get install binutils-mips-linux-gnu
# 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
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 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@...el.com>
All warnings (new ones prefixed by >>):
In file included from arch/mips/boot/compressed/bswapdi.c:2:
>> arch/mips/boot/compressed/../../lib/bswapdi.c:5:28: warning: no previous prototype for function '__bswapdi2' [-Wmissing-prototypes]
unsigned long long notrace __bswapdi2(unsigned long long u)
^
arch/mips/boot/compressed/../../lib/bswapdi.c:5:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
unsigned long long notrace __bswapdi2(unsigned long long u)
^
static
1 warning generated.
vim +/__bswapdi2 +5 arch/mips/boot/compressed/../../lib/bswapdi.c
1ee3630a3e57f3 Ralf Baechle 2015-09-29 4
aedcfbe06558a9 Harvey Hunt 2016-05-25 @5 unsigned long long notrace __bswapdi2(unsigned long long u)
1ee3630a3e57f3 Ralf Baechle 2015-09-29 6 {
1ee3630a3e57f3 Ralf Baechle 2015-09-29 7 return (((u) & 0xff00000000000000ull) >> 56) |
1ee3630a3e57f3 Ralf Baechle 2015-09-29 8 (((u) & 0x00ff000000000000ull) >> 40) |
1ee3630a3e57f3 Ralf Baechle 2015-09-29 9 (((u) & 0x0000ff0000000000ull) >> 24) |
1ee3630a3e57f3 Ralf Baechle 2015-09-29 10 (((u) & 0x000000ff00000000ull) >> 8) |
1ee3630a3e57f3 Ralf Baechle 2015-09-29 11 (((u) & 0x00000000ff000000ull) << 8) |
1ee3630a3e57f3 Ralf Baechle 2015-09-29 12 (((u) & 0x0000000000ff0000ull) << 24) |
1ee3630a3e57f3 Ralf Baechle 2015-09-29 13 (((u) & 0x000000000000ff00ull) << 40) |
1ee3630a3e57f3 Ralf Baechle 2015-09-29 14 (((u) & 0x00000000000000ffull) << 56);
1ee3630a3e57f3 Ralf Baechle 2015-09-29 15 }
1ee3630a3e57f3 Ralf Baechle 2015-09-29 16
:::::: The code at line 5 was first introduced by commit
:::::: aedcfbe06558a9f53002e82d5be64c6c94687726 MIPS: lib: Mark intrinsics notrace
:::::: TO: Harvey Hunt <harvey.hunt@...tec.com>
:::::: CC: Ralf Baechle <ralf@...ux-mips.org>
--
0-DAY CI Kernel Test Service
https://01.org/lkp
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