Hi Abhinav, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on drm-exynos/exynos-drm-next] [also build test WARNING on drm-intel/for-linux-next tegra-drm/drm/tegra/for-next drm-tip/drm-tip linus/master v5.9 next-20201022] [cannot apply to drm/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/Abhinav-Kumar/Add-devcoredump-support-for-DPU/20201022-130507 base: https://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos.git exynos-drm-next 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/a7e6907c303a46ea8422fc3c414c22fdfb45d49f git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Abhinav-Kumar/Add-devcoredump-support-for-DPU/20201022-130507 git checkout a7e6907c303a46ea8422fc3c414c22fdfb45d49f # 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@xxxxxxxxx> All warnings (new ones prefixed by >>): drivers/gpu/drm/msm/disp/dpu1/dpu_dbg.c: In function 'dpu_dbg_dump': >> drivers/gpu/drm/msm/disp/dpu1/dpu_dbg.c:115:6: warning: variable 'i' set but not used [-Wunused-but-set-variable] 115 | int i, index = 0; | ^ vim +/i +115 drivers/gpu/drm/msm/disp/dpu1/dpu_dbg.c 112 113 void dpu_dbg_dump(enum dpu_dbg_dump_context dump_mode, const char *name, ...) 114 { > 115 int i, index = 0; 116 bool do_panic = false; 117 bool dump_all = false; 118 va_list args; 119 char *blk_name = NULL; 120 struct dpu_dbg_reg_base *blk_base = NULL; 121 struct dpu_dbg_reg_base **blk_arr; 122 u32 blk_len; 123 124 /* 125 * if there is a coredump pending return immediately till dump 126 * if read by userspace or timeout happens 127 */ 128 if (((dpu_dbg.enable_reg_dump == DPU_DBG_DUMP_IN_MEM) || 129 (dpu_dbg.enable_reg_dump == DPU_DBG_DUMP_IN_COREDUMP)) && 130 dpu_dbg.coredump_pending) { 131 pr_debug("coredump is pending read\n"); 132 return; 133 } 134 135 blk_arr = &dpu_dbg.req_dump_blks[0]; 136 blk_len = ARRAY_SIZE(dpu_dbg.req_dump_blks); 137 138 memset(dpu_dbg.req_dump_blks, 0, 139 sizeof(dpu_dbg.req_dump_blks)); 140 dpu_dbg.dump_all = false; 141 dpu_dbg.dump_mode = dump_mode; 142 143 va_start(args, name); 144 i = 0; 145 while ((blk_name = va_arg(args, char*))) { 146 147 if (IS_ERR_OR_NULL(blk_name)) 148 break; 149 150 blk_base = _dpu_dump_get_blk_addr(&dpu_dbg, blk_name); 151 if (blk_base) { 152 if (index < blk_len) { 153 blk_arr[index] = blk_base; 154 index++; 155 } else { 156 pr_err("insufficient space to dump %s\n", 157 blk_name); 158 } 159 } 160 161 if (!strcmp(blk_name, "all")) 162 dump_all = true; 163 164 if (!strcmp(blk_name, "panic")) 165 do_panic = true; 166 167 } 168 va_end(args); 169 170 dpu_dbg.work_panic = do_panic; 171 dpu_dbg.dump_all = dump_all; 172 173 kthread_queue_work(dpu_dbg.dump_worker, 174 &dpu_dbg.dump_work); 175 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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