arch/mips/kernel/setup.c:47:39: error: conflicting types for '__appended_dtb'

From: kernel test robot
Date: Fri Mar 19 2021 - 14:16:28 EST

Hi Thomas,

FYI, the error/warning still remains.

tree: master
head: 8b12a62a4e3ed4ae99c715034f557eb391d6b196
commit: b83ba0b9df56f8404ccc6ebcc7050fb8294f0f20 MIPS: of: Introduce helper function to get DTB
date: 6 weeks ago
config: mips-randconfig-r033-20210318 (attached as .config)
compiler: mips-linux-gcc (GCC) 9.3.0
reproduce (this is a W=1 build):
wget -O ~/bin/make.cross
chmod +x ~/bin/make.cross
git remote add linus
git fetch --no-tags linus master
git checkout b83ba0b9df56f8404ccc6ebcc7050fb8294f0f20
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=mips

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

All errors (new ones prefixed by >>):

>> arch/mips/kernel/setup.c:47:39: error: conflicting types for '__appended_dtb'
47 | const char __section(".appended_dtb") __appended_dtb[0x100000];
| ^~~~~~~~~~~~~~
In file included from arch/mips/kernel/setup.c:34:
arch/mips/include/asm/bootinfo.h:118:13: note: previous declaration of '__appended_dtb' was here
118 | extern char __appended_dtb[];
| ^~~~~~~~~~~~~~

vim +/__appended_dtb +47 arch/mips/kernel/setup.c

^1da177e4c3f41 Linus Torvalds 2005-04-16 45
87db537da4cd1b Aaro Koskinen 2015-09-11 46 #ifdef CONFIG_MIPS_ELF_APPENDED_DTB
33def8498fdde1 Joe Perches 2020-10-21 @47 const char __section(".appended_dtb") __appended_dtb[0x100000];
87db537da4cd1b Aaro Koskinen 2015-09-11 48 #endif /* CONFIG_MIPS_ELF_APPENDED_DTB */
87db537da4cd1b Aaro Koskinen 2015-09-11 49

:::::: The code at line 47 was first introduced by commit
:::::: 33def8498fdde180023444b08e12b72a9efed41d treewide: Convert macro and uses of __section(foo) to __section("foo")

:::::: TO: Joe Perches <joe@xxxxxxxxxxx>
:::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>

0-DAY CI Kernel Test Service, Intel Corporation

Attachment: .config.gz
Description: application/gzip