[driver-core:device_h_splitup 3/7] drivers//base/devtmpfs.c:362:5: error: conflicting types for 'devtmpfs_mount'

[kbuild test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git device_h_splitup
head:   3faaa7db6e6cb1d64da7778d1a4076b923277558
commit: c0ff8d9b83c875831cb030576dc9a087202c3f41 [3/7] device.h: move devtmpfs prototypes out of the file
config: ia64-allmodconfig (attached as .config)
compiler: ia64-linux-gcc (GCC) 7.5.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout c0ff8d9b83c875831cb030576dc9a087202c3f41
        # save the attached .config to linux build tree
        GCC_VERSION=7.5.0 make.cross ARCH=ia64 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp at intel.com>

All errors (new ones prefixed by >>):

>> drivers//base/devtmpfs.c:362:5: error: conflicting types for 'devtmpfs_mount'
    int devtmpfs_mount(void)
        ^~~~~~~~~~~~~~
   In file included from include/linux/node.h:18:0,
                    from include/linux/cpu.h:17,
                    from include/linux/perf_event.h:50,
                    from include/linux/trace_events.h:10,
                    from include/trace/syscall.h:7,
                    from include/linux/syscalls.h:85,
                    from drivers//base/devtmpfs.c:17:
   include/linux/device.h:1667:12: note: previous declaration of 'devtmpfs_mount' was here
    extern int devtmpfs_mount(const char *mntdir);
               ^~~~~~~~~~~~~~

vim +/devtmpfs_mount +362 drivers//base/devtmpfs.c

2b2af54a5bb6f7 Kay Sievers       2009-04-30  357  
2b2af54a5bb6f7 Kay Sievers       2009-04-30  358  /*
2b2af54a5bb6f7 Kay Sievers       2009-04-30  359   * If configured, or requested by the commandline, devtmpfs will be
2b2af54a5bb6f7 Kay Sievers       2009-04-30  360   * auto-mounted after the kernel mounted the root filesystem.
2b2af54a5bb6f7 Kay Sievers       2009-04-30  361   */
5e787dbf659fe7 Dominik Brodowski 2018-10-23 @362  int devtmpfs_mount(void)
2b2af54a5bb6f7 Kay Sievers       2009-04-30  363  {
2b2af54a5bb6f7 Kay Sievers       2009-04-30  364  	int err;
2b2af54a5bb6f7 Kay Sievers       2009-04-30  365  
fc14f2fef682df Al Viro           2010-07-25  366  	if (!mount_dev)
2b2af54a5bb6f7 Kay Sievers       2009-04-30  367  		return 0;
2b2af54a5bb6f7 Kay Sievers       2009-04-30  368  
2780f1ff6aec0c Al Viro           2011-06-27  369  	if (!thread)
2b2af54a5bb6f7 Kay Sievers       2009-04-30  370  		return 0;
2b2af54a5bb6f7 Kay Sievers       2009-04-30  371  
5e787dbf659fe7 Dominik Brodowski 2018-10-23  372  	err = do_mount("devtmpfs", "dev", "devtmpfs", MS_SILENT, NULL);
2b2af54a5bb6f7 Kay Sievers       2009-04-30  373  	if (err)
2b2af54a5bb6f7 Kay Sievers       2009-04-30  374  		printk(KERN_INFO "devtmpfs: error mounting %i\n", err);
2b2af54a5bb6f7 Kay Sievers       2009-04-30  375  	else
2b2af54a5bb6f7 Kay Sievers       2009-04-30  376  		printk(KERN_INFO "devtmpfs: mounted\n");
2b2af54a5bb6f7 Kay Sievers       2009-04-30  377  	return err;
2b2af54a5bb6f7 Kay Sievers       2009-04-30  378  }
2b2af54a5bb6f7 Kay Sievers       2009-04-30  379  

:::::: The code at line 362 was first introduced by commit
:::::: 5e787dbf659fe77d56215be74044f85e01b3920f devtmpfs: use do_mount() instead of ksys_mount()

:::::: TO: Dominik Brodowski <linux at dominikbrodowski.net>
:::::: CC: Dominik Brodowski <linux at dominikbrodowski.net>

---
0-DAY kernel test infrastructure                 Open Source Technology Center
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org Intel Corporation
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