Re: [PATCH 2/4] drivers core: Remove strcat uses around sysfs_emit and neaten

[kernel test robot]

Hi Joe,

I love your patch! Yet something to improve:

[auto build test ERROR on driver-core/driver-core-testing]
[also build test ERROR on pm/linux-next linus/master v5.9-rc4 next-20200903]
[cannot apply to linux/master]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Joe-Perches/drivers-core-Use-sysfs_emit-functions/20200908-021333
base:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git 4024823563d05bbe880885c9987d14a7130801da
config: s390-randconfig-s031-20200908 (attached as .config)
compiler: s390-linux-gcc (GCC) 9.3.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.2-191-g10164920-dirty
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=s390 

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

All errors (new ones prefixed by >>):

   drivers/base/memory.c: In function 'phys_index_show':
   drivers/base/memory.c:122:9: error: implicit declaration of function 'sysfs_emit'; did you mean 'sysfs_init'? [-Werror=implicit-function-declaration]
     122 |  return sysfs_emit(buf, "%08lx\n", phys_index);
         |         ^~~~~~~~~~
         |         sysfs_init
   drivers/base/memory.c: In function 'print_allowed_zone':
>> drivers/base/memory.c:317:9: error: implicit declaration of function 'sysfs_emit_at'; did you mean 'sysfs_init'? [-Werror=implicit-function-declaration]
     317 |  return sysfs_emit_at(buf, len, " %s", zone->name);
         |         ^~~~~~~~~~~~~
         |         sysfs_init
   cc1: some warnings being treated as errors

# https://github.com/0day-ci/linux/commit/a8789a23413de463f5e591d57748493242aa4be4
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Joe-Perches/drivers-core-Use-sysfs_emit-functions/20200908-021333
git checkout a8789a23413de463f5e591d57748493242aa4be4
vim +317 drivers/base/memory.c

   306	
   307	#ifdef CONFIG_MEMORY_HOTREMOVE
   308	static int print_allowed_zone(char *buf, int len, int nid,
   309				      unsigned long start_pfn, unsigned long nr_pages,
   310				      int online_type, struct zone *default_zone)
   311	{
   312		struct zone *zone;
   313	
   314		zone = zone_for_pfn_range(online_type, nid, start_pfn, nr_pages);
   315		if (zone == default_zone)
   316			return 0;
 > 317		return sysfs_emit_at(buf, len, " %s", zone->name);
   318	}
   319	

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

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