Hi Brad, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on linuxtv-media/master] [also build test WARNING on v5.7 next-20200613] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Brad-Love/MaxLinear-mxl692-demod... base: git://linuxtv.org/media_tree.git master config: alpha-randconfig-c021-20200612 (attached as .config) compiler: alpha-linux-gcc (GCC) 9.3.0 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 >>, old ones prefixed by <<): drivers/media/dvb-frontends/mxl692.c: In function 'mxl692_read_ber_ucb': 1159 | struct MXL_EAGLE_QAM_DEMOD_ERROR_COUNTERS_T *qam_errors; | ^~~~~~~~~~ vim +/qam_errors +1159 drivers/media/dvb-frontends/mxl692.c 1153 1154 static int mxl692_read_ber_ucb(struct dvb_frontend *fe) 1155 { 1156 struct mxl692_dev *dev = fe->demodulator_priv; 1157 struct dtv_frontend_properties *c = &fe->dtv_property_cache; 1158 u8 rx_buf[MXL_EAGLE_MAX_I2C_PACKET_SIZE] = {}; 1160 struct MXL_EAGLE_ATSC_DEMOD_ERROR_COUNTERS_T *atsc_errors; 1161 enum MXL_EAGLE_DEMOD_TYPE_E demod_type = dev->demod_type; 1162 int mxl_status = 0; 1163 u32 utmp; 1164 1165 dev_dbg(&dev->i2c_client->dev, "\n"); 1166 1167 qam_errors = (struct MXL_EAGLE_QAM_DEMOD_ERROR_COUNTERS_T *)&rx_buf; 1168 atsc_errors = (struct MXL_EAGLE_ATSC_DEMOD_ERROR_COUNTERS_T *)&rx_buf; 1169 1170 switch (demod_type) { 1171 case MXL_EAGLE_DEMOD_TYPE_ATSC: 1172 mxl_status = mxl692_i2c_writeread(dev, 1173 MXL_EAGLE_OPCODE_ATSC_ERROR_COUNTERS_GET, 1174 NULL, 1175 0, 1176 rx_buf, 1177 sizeof(struct MXL_EAGLE_ATSC_DEMOD_ERROR_COUNTERS_T)); 1178 if (!mxl_status) { 1179 if (atsc_errors->error_packets == 0) 1180 utmp = 0; 1181 else 1182 utmp = ((atsc_errors->error_bytes / atsc_errors->error_packets) * 1183 atsc_errors->total_packets); 1184 /* ber */ 1185 c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER; 1186 c->post_bit_error.stat[0].uvalue += atsc_errors->error_bytes; 1187 c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER; 1188 c->post_bit_count.stat[0].uvalue += utmp; 1189 /* ucb */ 1190 c->block_error.stat[0].scale = FE_SCALE_COUNTER; 1191 c->block_error.stat[0].uvalue += atsc_errors->error_packets; 1192 1193 dev_dbg(&dev->i2c_client->dev, "%llu %llu\n", 1194 c->post_bit_count.stat[0].uvalue, c->block_error.stat[0].uvalue); 1195 } 1196 break; 1197 case MXL_EAGLE_DEMOD_TYPE_QAM: 1198 case MXL_EAGLE_DEMOD_TYPE_OOB: 1199 default: 1200 break; 1201 } 1202 return 0; 1203 } 1204 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org