Hi Jordan,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on drm-intel/for-linux-next]
[also build test WARNING on drm-tip/drm-tip drm-exynos/exynos-drm-next 
drm/drm-next tegra-drm/drm/tegra/for-next v5.17-rc3 next-20220207]
[cannot apply to airlied/drm-next]
[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/Jordan-Justen/GuC-HWCONFIG-with-documentation/20220208-032950
base:   git://anongit.freedesktop.org/drm-intel for-linux-next
config: i386-buildonly-randconfig-r001-20220207 
(https://download.01.org/0day-ci/archive/20220208/[email protected]/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 
0d8850ae2cae85d49bea6ae0799fa41c7202c05c)
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://github.com/0day-ci/linux/commit/c122b0dea958e76766ce9b4b9f34d2eed16fb566
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review 
Jordan-Justen/GuC-HWCONFIG-with-documentation/20220208-032950
        git checkout c122b0dea958e76766ce9b4b9f34d2eed16fb566
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 
O=build_dir ARCH=i386 SHELL=/bin/bash drivers/gpu/drm/i915/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <[email protected]>

All warnings (new ones prefixed by >>):

>> drivers/gpu/drm/i915/gt/uc/intel_guc_hwconfig.c:79:44: warning: mixing 
>> declarations and code is a C99 extension [-Wdeclaration-after-statement]
           struct drm_i915_query_hwconfig_blob_item *pos = hwconfig->ptr;
                                                     ^
   1 warning generated.


vim +79 drivers/gpu/drm/i915/gt/uc/intel_guc_hwconfig.c

    73  
    74  static int verify_hwconfig_blob(const struct intel_guc_hwconfig 
*hwconfig)
    75  {
    76          if (hwconfig->size % 4 != 0 || hwconfig->ptr == NULL)
    77                  return -EINVAL;
    78  
  > 79          struct drm_i915_query_hwconfig_blob_item *pos = hwconfig->ptr;
    80          u32 remaining = (hwconfig->size / 4);
    81          while (remaining > 0) {
    82                  if (remaining < 2)
    83                          return -EINVAL;
    84                  if (pos->length > remaining - 2)
    85                          return -EINVAL;
    86                  remaining -= 2 + pos->length;
    87                  pos = (void *)&pos->data[pos->length];
    88          }
    89  
    90          DRM_INFO("hwconfig blob format appears valid\n");
    91          return 0;
    92  }
    93  

---
0-DAY CI Kernel Test Service, Intel Corporation
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