linux-kernel - [gustavoars-linux:testing/staging/rtl8188eu 8321/8744] arch/mips/kernel/setup.c:47:39: error: redefinition of '__appended_dtb' with a different type: 'const char vs 'char

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Date:   Wed, 10 Feb 2021 08:33:39 +0800
From:   kernel test robot <lkp@...el.com>
To:     Thomas Bogendoerfer <tsbogend@...ha.franken.de>
Cc:     kbuild-all@...ts.01.org, clang-built-linux@...glegroups.com,
        "Gustavo A. R. Silva" <gustavo@...eddedor.com>,
        LKML <linux-kernel@...r.kernel.org>
Subject: [gustavoars-linux:testing/staging/rtl8188eu 8321/8744]
 arch/mips/kernel/setup.c:47:39: error: redefinition of '__appended_dtb' with
 a different type: 'const char vs 'char

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux.git testing/staging/rtl8188eu
head:   25e1a76c1c41a6d6f103b572f4f50ba30787f9ab
commit: b83ba0b9df56f8404ccc6ebcc7050fb8294f0f20 [8321/8744] MIPS: of: Introduce helper function to get DTB
config: mips-randconfig-r033-20210209 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project c9439ca36342fb6013187d0a69aef92736951476)
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/gustavoars/linux.git/commit/?id=b83ba0b9df56f8404ccc6ebcc7050fb8294f0f20
        git remote add gustavoars-linux https://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux.git
        git fetch --no-tags gustavoars-linux testing/staging/rtl8188eu
        git checkout b83ba0b9df56f8404ccc6ebcc7050fb8294f0f20
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=mips 

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

All errors (new ones prefixed by >>):

>> arch/mips/kernel/setup.c:47:39: error: redefinition of '__appended_dtb' with a different type: 'const char [1048576]' vs 'char []'
   const char __section(".appended_dtb") __appended_dtb[0x100000];
                                         ^
   arch/mips/include/asm/bootinfo.h:118:13: note: previous declaration is here
   extern char __appended_dtb[];
               ^
   1 error generated.


vim +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@...ches.com>
:::::: CC: Linus Torvalds <torvalds@...ux-foundation.org>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

Download attachment ".config.gz" of type "application/gzip" (35107 bytes)