[drm-msm:msm-next-staging 56/96] drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c:273:2: warning: unannotated fall-through between switch labels

[drm-msm:msm-next-staging 56/96] drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c:273:2: warning: unannotated fall-through between switch labels

[kernel test robot]

tree:   https://gitlab.freedesktop.org/drm/msm.git msm-next-staging
head:   f1fc2b87de4719cfa8e193e0746cc524dd9f7472
commit: 6d084806c8c107dc0b652d6792c7aea9b6b0d66f [56/96] drm/msm/dpu: add changes to support writeback in hw_ctl
config: arm64-allyesconfig (https://download.01.org/0day-ci/archive/20220502/202205021302.tnSsOIBN-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 09325d36061e42b495d1f4c7e933e260eac260ed)
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 arm64 cross compiling tool for clang build
        # apt-get install binutils-aarch64-linux-gnu
        git remote add drm-msm https://gitlab.freedesktop.org/drm/msm.git
        git fetch --no-tags drm-msm msm-next-staging
        git checkout 6d084806c8c107dc0b652d6792c7aea9b6b0d66f
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash drivers/dma/ti/ drivers/gpu/drm/msm/ drivers/pci/controller/dwc/

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

All warnings (new ones prefixed by >>):

>> drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c:273:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough]
           default:
           ^
   drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c:273:2: note: insert 'break;' to avoid fall-through
           default:
           ^
           break; 
   1 warning generated.


vim +273 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c

   264	
   265	static void dpu_hw_ctl_update_pending_flush_wb(struct dpu_hw_ctl *ctx,
   266			enum dpu_wb wb)
   267	{
   268		switch (wb) {
   269		case WB_0:
   270		case WB_1:
   271		case WB_2:
   272			ctx->pending_flush_mask |= BIT(WB_IDX);
 > 273		default:
   274			break;
   275		}
   276	}
   277	

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp