Hi Sean, kernel test robot noticed the following build warnings: [auto build test WARNING on v6.8] [cannot apply to drm-misc/drm-misc-next linus/master next-20240315] [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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Sean-Anderson/drm-zynqmp_dp-Downgrade-log-level-for-aux-retries-message/20240316-071208 base: v6.8 patch link: https://lore.kernel.org/r/20240315230916.1759060-7-sean.anderson%40linux.dev patch subject: [PATCH 6/6] drm: zynqmp_dp: Add debugfs interface for compliance testing config: microblaze-allmodconfig (https://download.01.org/0day-ci/archive/20240316/202403161704.ACHJdSJG-lkp@xxxxxxxxx/config) compiler: microblaze-linux-gcc (GCC) 13.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240316/202403161704.ACHJdSJG-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202403161704.ACHJdSJG-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): drivers/gpu/drm/xlnx/zynqmp_dp.c: In function 'zynqmp_dp_bridge_debugfs_init': >> drivers/gpu/drm/xlnx/zynqmp_dp.c:2168:31: warning: 'sprintf' may write a terminating nul past the end of the destination [-Wformat-overflow=] 2168 | sprintf(name, fmt, i); | ^~~ drivers/gpu/drm/xlnx/zynqmp_dp.c:2168:17: note: 'sprintf' output between 18 and 20 bytes into a destination of size 19 2168 | sprintf(name, fmt, i); | ^~~~~~~~~~~~~~~~~~~~~ vim +/sprintf +2168 drivers/gpu/drm/xlnx/zynqmp_dp.c 2136 2137 DEFINE_DEBUGFS_ATTRIBUTE(fops_zynqmp_dp_rate, zynqmp_dp_rate_get, 2138 zynqmp_dp_rate_set, "%llu\n"); 2139 2140 static void zynqmp_dp_bridge_debugfs_init(struct drm_bridge *bridge, 2141 struct dentry *root) 2142 { 2143 struct zynqmp_dp *dp = bridge_to_dp(bridge); 2144 struct dentry *test; 2145 int i; 2146 2147 dp->test.bw_code = DP_LINK_BW_5_4; 2148 dp->test.link_cnt = dp->num_lanes; 2149 2150 test = debugfs_create_dir("test", root); 2151 #define CREATE_FILE(name) \ 2152 debugfs_create_file(#name, 0600, test, dp, &fops_zynqmp_dp_##name) 2153 CREATE_FILE(pattern); 2154 CREATE_FILE(enhanced); 2155 CREATE_FILE(downspread); 2156 CREATE_FILE(active); 2157 CREATE_FILE(custom); 2158 CREATE_FILE(rate); 2159 CREATE_FILE(lanes); 2160 2161 for (i = 0; i < dp->num_lanes; i++) { 2162 static const char fmt[] = "lane%d_preemphasis"; 2163 char name[sizeof(fmt)]; 2164 2165 dp->debugfs_train_set[i].dp = dp; 2166 dp->debugfs_train_set[i].lane = i; 2167 > 2168 sprintf(name, fmt, i); 2169 debugfs_create_file(name, 0600, test, 2170 &dp->debugfs_train_set[i], 2171 &fops_zynqmp_dp_preemphasis); 2172 2173 sprintf(name, "lane%d_swing", i); 2174 debugfs_create_file(name, 0600, test, 2175 &dp->debugfs_train_set[i], 2176 &fops_zynqmp_dp_swing); 2177 } 2178 } 2179 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
