Hi Dmitry, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on linus/master] [also build test WARNING on v5.13-rc5] [cannot apply to next-20210607] [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-dsi-add... base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 614124bea77e452aa6df7a8714e8bc820b489922 config: arm-defconfig (attached as .config) compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0 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/a0cec71ca8eb8dc521ab7a99c28865ce4... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Dmitry-Baryshkov/drm-msm-dsi-add-continuous-clock-support-for-7nm-PHY/20210608-040715 git checkout a0cec71ca8eb8dc521ab7a99c28865ce4e428e01 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): 838 | bool msm_dsi_phy_needs_hs_phy_sel(struct msm_dsi_phy *phy) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +/msm_dsi_phy_needs_hs_phy_sel +838 drivers/gpu/drm/msm/dsi/phy/dsi_phy.c 837 839 { 840 if (!phy) 841 return false; 842 return phy->cfg->ops.set_continuous_clock != NULL; 843 } 844 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org