[radeon-alex:amd-20.45 2387/2417] drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c:1284:2: warning: ignoring return value of function declared with 'warn_unused_result' attribute

[kernel test robot]

tree:   git://people.freedesktop.org/~agd5f/linux.git amd-20.45
head:   1807abbb3a7f17fc931a15d7fd4365ea148c6bb1
commit: cf13e50dea28cde351fa32767e36135afb30386d [2387/2417] drm/amdgpu: clean 
up ras sysfs creation (v2)
config: x86_64-randconfig-a011-20201120 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 
3ded927cf80ac519f9f9c4664fef08787f7c537d)
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 x86_64 cross compiling tool for clang build
        # apt-get install binutils-x86-64-linux-gnu
        git remote add radeon-alex git://people.freedesktop.org/~agd5f/linux.git
        git fetch --no-tags radeon-alex amd-20.45
        git checkout cf13e50dea28cde351fa32767e36135afb30386d
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 

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

All warnings (new ones prefixed by >>):

   drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c:906:5: warning: no previous 
prototype for function 'amdgpu_ras_error_cure' [-Wmissing-prototypes]
   int amdgpu_ras_error_cure(struct amdgpu_device *adev,
       ^
   drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c:906:1: note: declare 'static' if the 
function is not intended to be used outside of this translation unit
   int amdgpu_ras_error_cure(struct amdgpu_device *adev,
   ^
   static 
>> drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c:1284:2: warning: ignoring return 
>> value of function declared with 'warn_unused_result' attribute 
>> [-Wunused-result]
           sysfs_create_group(&adev->dev->kobj, &group);
           ^~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~
   2 warnings generated.

vim +/warn_unused_result +1284 drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c

  1249  
  1250  /* ras fs */
  1251  static BIN_ATTR(gpu_vram_bad_pages, S_IRUGO,
  1252                  amdgpu_ras_sysfs_badpages_read, NULL, 0);
  1253  static DEVICE_ATTR(features, S_IRUGO,
  1254                  amdgpu_ras_sysfs_features_read, NULL);
  1255  static int amdgpu_ras_fs_init(struct amdgpu_device *adev)
  1256  {
  1257          struct amdgpu_ras *con = amdgpu_ras_get_context(adev);
  1258          struct attribute_group group = {
  1259                  .name = RAS_FS_NAME,
  1260          };
  1261          struct attribute *attrs[] = {
  1262                  &con->features_attr.attr,
  1263                  NULL
  1264          };
  1265          struct bin_attribute *bin_attrs[] = {
  1266                  NULL,
  1267                  NULL,
  1268          };
  1269  
  1270          /* add features entry */
  1271          con->features_attr = dev_attr_features;
  1272          group.attrs = attrs;
  1273          sysfs_attr_init(attrs[0]);
  1274  
  1275          if (amdgpu_bad_page_threshold != 0) {
  1276                  /* add bad_page_features entry */
  1277                  bin_attr_gpu_vram_bad_pages.private = NULL;
  1278                  con->badpages_attr = bin_attr_gpu_vram_bad_pages;
  1279                  bin_attrs[0] = &con->badpages_attr;
  1280                  group.bin_attrs = bin_attrs;
  1281                  sysfs_bin_attr_init(bin_attrs[0]);
  1282          }
  1283  
> 1284          sysfs_create_group(&adev->dev->kobj, &group);
  1285  
  1286          return 0;
  1287  }
  1288  

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

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