Hi Dmitry, Thank you for the patch! Yet something to improve: [auto build test ERROR on linus/master] [also build test ERROR on next-20210709] [cannot apply to v5.13] [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/Dmitry-Baryshkov/drm-msm-dpu-add... base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 1e16624d7b4376797ede36e3c955375cf0f23298 config: arm-randconfig-r016-20210711 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 8d69635ed9ecf36fd0ca85906bfde17949671cbe) 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 arm cross compiling tool for clang build # apt-get install binutils-arm-linux-gnueabi # https://github.com/0day-ci/linux/commit/d60158cc75b16689ac121290b56216091... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Dmitry-Baryshkov/drm-msm-dpu-add-support-for-independent-DSI-config/20210711-062150 git checkout d60158cc75b16689ac121290b562160916b57833 # save the attached .config to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross O=build_dir ARCH=arm SHELL=/bin/bash drivers/gpu/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All error/warnings (new ones prefixed by >>): In file included from drivers/gpu/drm/msm/adreno/adreno_device.c:9: In file included from drivers/gpu/drm/msm/adreno/adreno_gpu.h:15: In file included from drivers/gpu/drm/msm/msm_gpu.h:16: return false ^ ; bool msm_dsi_is_master_dsi(struct msm_dsi *msm_dsi) ^ drivers/gpu/drm/msm/msm_drv.h:380:1: note: declare 'static' if the function is not intended to be used outside of this translation unit bool msm_dsi_is_master_dsi(struct msm_dsi *msm_dsi) ^ static 1 warning and 1 error generated. -- In file included from drivers/gpu/drm/msm/dp/dp_display.c:14: return false ^ ; bool msm_dsi_is_master_dsi(struct msm_dsi *msm_dsi) ^ drivers/gpu/drm/msm/msm_drv.h:380:1: note: declare 'static' if the function is not intended to be used outside of this translation unit bool msm_dsi_is_master_dsi(struct msm_dsi *msm_dsi) ^ static drivers/gpu/drm/msm/dp/dp_display.c:1017:21: warning: variable 'drm' set but not used [-Wunused-but-set-variable] struct drm_device *drm; ^ 2 warnings and 1 error generated. Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for QCOM_SCM Depends on (ARM || ARM64) && HAVE_ARM_SMCCC Selected by - ARM_QCOM_SPM_CPUIDLE && CPU_IDLE && (ARM || ARM64) && (ARCH_QCOM || COMPILE_TEST && !ARM64 && MMU vim +382 drivers/gpu/drm/msm/msm_drv.h 339 340 struct msm_edp; 341 void __init msm_edp_register(void); 342 void __exit msm_edp_unregister(void); 343 int msm_edp_modeset_init(struct msm_edp *edp, struct drm_device *dev, 344 struct drm_encoder *encoder); 345 346 struct msm_dsi; 347 #ifdef CONFIG_DRM_MSM_DSI 348 void __init msm_dsi_register(void); 349 void __exit msm_dsi_unregister(void); 350 int msm_dsi_modeset_init(struct msm_dsi *msm_dsi, struct drm_device *dev, 351 struct drm_encoder *encoder); 352 void msm_dsi_snapshot(struct msm_disp_state *disp_state, struct msm_dsi *msm_dsi); 353 bool msm_dsi_is_cmd_mode(struct msm_dsi *msm_dsi); 354 bool msm_dsi_is_bonded_dsi(struct msm_dsi *msm_dsi); 355 bool msm_dsi_is_master_dsi(struct msm_dsi *msm_dsi); 356 #else 357 static inline void __init msm_dsi_register(void) 358 { 359 } 360 static inline void __exit msm_dsi_unregister(void) 361 { 362 } 363 static inline int msm_dsi_modeset_init(struct msm_dsi *msm_dsi, 364 struct drm_device *dev, 365 struct drm_encoder *encoder) 366 { 367 return -EINVAL; 368 } 369 static inline void msm_dsi_snapshot(struct msm_disp_state *disp_state, struct msm_dsi *msm_dsi) 370 { 371 } 372 static inline bool msm_dsi_is_cmd_mode(struct msm_dsi *msm_dsi) 373 { 374 return false; 375 } 376 static bool msm_dsi_is_bonded_dsi(struct msm_dsi *msm_dsi) 377 { 378 return false; 379 } 381 { 383 } 384 #endif 385 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org