Hi Vinay, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on drm-tip/drm-tip] [cannot apply to drm-intel/for-linux-next drm-exynos/exynos-drm-next tegra-drm/drm/tegra/for-next drm/drm-next v5.14-rc2 next-20210723] [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/Vinay-Belgaumkar/drm-i915-guc-En... base: git://anongit.freedesktop.org/drm/drm-tip drm-tip config: x86_64-rhel-8.3-kselftests (attached as .config) compiler: gcc-10 (Ubuntu 10.3.0-1ubuntu1~20.04) 10.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.3-341-g8af24329-dirty # https://github.com/0day-ci/linux/commit/14352081e4f18759e70413f3be4151d62... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Vinay-Belgaumkar/drm-i915-guc-Enable-GuC-based-power-management-features/20210722-001528 git checkout 14352081e4f18759e70413f3be4151d623c97b8c # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/gpu/drm/i915/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) vim +/slpc_decode_min_freq +217 drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c 216 218 { 219 struct slpc_shared_data *data = slpc->vaddr; 220 221 GEM_BUG_ON(!slpc->vma); 222 223 return DIV_ROUND_CLOSEST( 224 REG_FIELD_GET(SLPC_MIN_UNSLICE_FREQ_MASK, 225 data->task_state_data.freq) * 226 GT_FREQUENCY_MULTIPLIER, GEN9_FREQ_SCALER); 227 } 228 230 { 231 struct slpc_shared_data *data = slpc->vaddr; 232 233 GEM_BUG_ON(!slpc->vma); 234 235 return DIV_ROUND_CLOSEST( 236 REG_FIELD_GET(SLPC_MAX_UNSLICE_FREQ_MASK, 237 data->task_state_data.freq) * 238 GT_FREQUENCY_MULTIPLIER, GEN9_FREQ_SCALER); 239 } 240 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org