linux-kernel - crypto/async_tx/raid6test.c:44:13: error: 'disk_type' redeclared as different kind of symbol

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Message-ID: <202107111726.F0jmMUDP-lkp@intel.com>
Date:   Sun, 11 Jul 2021 17:58:30 +0800
From:   kernel test robot <lkp@...el.com>
To:     Boris Burkov <boris@....io>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Jens Axboe <axboe@...nel.dk>
Subject: crypto/async_tx/raid6test.c:44:13: error: 'disk_type' redeclared as
 different kind of symbol

Hi Boris,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   de5540965853e514a85d3b775e9049deb85a2ff3
commit: ef45fe470e1e5410db4af87abc5d5055427945ac blk-cgroup: show global disk stats in root cgroup io.stat
date:   12 months ago
config: mips-randconfig-r035-20210711 (attached as .config)
compiler: mipsel-linux-gcc (GCC) 9.3.0
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=ef45fe470e1e5410db4af87abc5d5055427945ac
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout ef45fe470e1e5410db4af87abc5d5055427945ac
        # save the attached .config to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross O=build_dir ARCH=mips SHELL=/bin/bash crypto/async_tx/

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 >>):

>> crypto/async_tx/raid6test.c:44:13: error: 'disk_type' redeclared as different kind of symbol
      44 | static char disk_type(int d, int disks)
         |             ^~~~~~~~~
   In file included from arch/mips/include/asm/mach-rc32434/rb.h:10,
                    from arch/mips/include/asm/mach-rc32434/irq.h:8,
                    from arch/mips/include/asm/irq.h:18,
                    from include/linux/irq.h:23,
                    from include/asm-generic/hardirq.h:13,
                    from arch/mips/include/asm/hardirq.h:16,
                    from include/linux/hardirq.h:10,
                    from include/linux/interrupt.h:11,
                    from include/linux/async_tx.h:9,
                    from crypto/async_tx/raid6test.c:9:
   include/linux/genhd.h:27:33: note: previous declaration of 'disk_type' was here
      27 | extern const struct device_type disk_type;
         |                                 ^~~~~~~~~


vim +/disk_type +44 crypto/async_tx/raid6test.c

cb3c82992f62f8 Dan Williams 2009-07-14  43  
cb3c82992f62f8 Dan Williams 2009-07-14 @44  static char disk_type(int d, int disks)
cb3c82992f62f8 Dan Williams 2009-07-14  45  {
cb3c82992f62f8 Dan Williams 2009-07-14  46  	if (d == disks - 2)
cb3c82992f62f8 Dan Williams 2009-07-14  47  		return 'P';
cb3c82992f62f8 Dan Williams 2009-07-14  48  	else if (d == disks - 1)
cb3c82992f62f8 Dan Williams 2009-07-14  49  		return 'Q';
cb3c82992f62f8 Dan Williams 2009-07-14  50  	else
cb3c82992f62f8 Dan Williams 2009-07-14  51  		return 'D';
cb3c82992f62f8 Dan Williams 2009-07-14  52  }
cb3c82992f62f8 Dan Williams 2009-07-14  53  

:::::: The code at line 44 was first introduced by commit
:::::: cb3c82992f62f838e6476a0bff12909158007fc6 async_tx: raid6 recovery self test

:::::: TO: Dan Williams <dan.j.williams@...el.com>
:::::: CC: Dan Williams <dan.j.williams@...el.com>

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

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