Hi Andy, I love your patch! Yet something to improve: [auto build test ERROR on jic23-iio/togreg] [also build test ERROR on linux/master linus/master v5.16 next-20220110] [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/Andy-Shevchenko/math-h-Introduce... base: https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg config: arm64-buildonly-randconfig-r002-20220111 (https://download.01.org/0day-ci/archive/20220111/202201110438.mfVkleOt-lk...) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 5c46c1c23abb4a01f7f40bfcb8851cb893739e14) 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 # https://github.com/0day-ci/linux/commit/2d0db3a1312ad1511ae417c82b4ba9616... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Andy-Shevchenko/math-h-Introduce-data-types-for-fractional-numbers/20220111-021818 git checkout 2d0db3a1312ad1511ae417c82b4ba9616b11a6b5 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash drivers/iio/adc/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): {.num = 1, .den = 1}, ^ {.num = 1, .den = 1}, ^ drivers/iio/adc/qcom-vadc-common.c:294:4: error: field designator 'num' does not refer to any field in type 'const struct u32_fract' {.num = 1, .den = 3}, ^ drivers/iio/adc/qcom-vadc-common.c:294:15: error: field designator 'den' does not refer to any field in type 'const struct u32_fract' {.num = 1, .den = 3}, ^ drivers/iio/adc/qcom-vadc-common.c:295:4: error: field designator 'num' does not refer to any field in type 'const struct u32_fract' {.num = 1, .den = 4}, ^ drivers/iio/adc/qcom-vadc-common.c:295:15: error: field designator 'den' does not refer to any field in type 'const struct u32_fract' {.num = 1, .den = 4}, ^ drivers/iio/adc/qcom-vadc-common.c:296:4: error: field designator 'num' does not refer to any field in type 'const struct u32_fract' {.num = 1, .den = 6}, ^ drivers/iio/adc/qcom-vadc-common.c:296:15: error: field designator 'den' does not refer to any field in type 'const struct u32_fract' {.num = 1, .den = 6}, ^ drivers/iio/adc/qcom-vadc-common.c:297:4: error: field designator 'num' does not refer to any field in type 'const struct u32_fract' {.num = 1, .den = 20}, ^ drivers/iio/adc/qcom-vadc-common.c:297:15: error: field designator 'den' does not refer to any field in type 'const struct u32_fract' {.num = 1, .den = 20}, ^ drivers/iio/adc/qcom-vadc-common.c:298:4: error: field designator 'num' does not refer to any field in type 'const struct u32_fract' {.num = 1, .den = 8}, ^ drivers/iio/adc/qcom-vadc-common.c:298:15: error: field designator 'den' does not refer to any field in type 'const struct u32_fract' {.num = 1, .den = 8}, ^ drivers/iio/adc/qcom-vadc-common.c:299:4: error: field designator 'num' does not refer to any field in type 'const struct u32_fract' {.num = 10, .den = 81}, ^ drivers/iio/adc/qcom-vadc-common.c:299:15: error: field designator 'den' does not refer to any field in type 'const struct u32_fract' {.num = 10, .den = 81}, ^ drivers/iio/adc/qcom-vadc-common.c:300:4: error: field designator 'num' does not refer to any field in type 'const struct u32_fract' {.num = 1, .den = 10}, ^ drivers/iio/adc/qcom-vadc-common.c:300:15: error: field designator 'den' does not refer to any field in type 'const struct u32_fract' {.num = 1, .den = 10}, ^ drivers/iio/adc/qcom-vadc-common.c:301:4: error: field designator 'num' does not refer to any field in type 'const struct u32_fract' {.num = 1, .den = 16} ^ drivers/iio/adc/qcom-vadc-common.c:301:15: error: field designator 'den' does not refer to any field in type 'const struct u32_fract' {.num = 1, .den = 16} ^ voltage = voltage * prescale->den; ~~~~~~~~ ^ fatal error: too many errors emitted, stopping now [-ferror-limit=] 20 errors generated. -- {.num = 1, .den = 1}, ^ {.num = 1, .den = 1}, ^ drivers/iio/adc/qcom-spmi-vadc.c:127:4: error: field designator 'num' does not refer to any field in type 'const struct u32_fract' {.num = 1, .den = 3}, ^ drivers/iio/adc/qcom-spmi-vadc.c:127:15: error: field designator 'den' does not refer to any field in type 'const struct u32_fract' {.num = 1, .den = 3}, ^ drivers/iio/adc/qcom-spmi-vadc.c:128:4: error: field designator 'num' does not refer to any field in type 'const struct u32_fract' {.num = 1, .den = 4}, ^ drivers/iio/adc/qcom-spmi-vadc.c:128:15: error: field designator 'den' does not refer to any field in type 'const struct u32_fract' {.num = 1, .den = 4}, ^ drivers/iio/adc/qcom-spmi-vadc.c:129:4: error: field designator 'num' does not refer to any field in type 'const struct u32_fract' {.num = 1, .den = 6}, ^ drivers/iio/adc/qcom-spmi-vadc.c:129:15: error: field designator 'den' does not refer to any field in type 'const struct u32_fract' {.num = 1, .den = 6}, ^ drivers/iio/adc/qcom-spmi-vadc.c:130:4: error: field designator 'num' does not refer to any field in type 'const struct u32_fract' {.num = 1, .den = 20}, ^ drivers/iio/adc/qcom-spmi-vadc.c:130:15: error: field designator 'den' does not refer to any field in type 'const struct u32_fract' {.num = 1, .den = 20}, ^ drivers/iio/adc/qcom-spmi-vadc.c:131:4: error: field designator 'num' does not refer to any field in type 'const struct u32_fract' {.num = 1, .den = 8}, ^ drivers/iio/adc/qcom-spmi-vadc.c:131:15: error: field designator 'den' does not refer to any field in type 'const struct u32_fract' {.num = 1, .den = 8}, ^ drivers/iio/adc/qcom-spmi-vadc.c:132:4: error: field designator 'num' does not refer to any field in type 'const struct u32_fract' {.num = 10, .den = 81}, ^ drivers/iio/adc/qcom-spmi-vadc.c:132:15: error: field designator 'den' does not refer to any field in type 'const struct u32_fract' {.num = 10, .den = 81}, ^ drivers/iio/adc/qcom-spmi-vadc.c:133:4: error: field designator 'num' does not refer to any field in type 'const struct u32_fract' {.num = 1, .den = 10} ^ drivers/iio/adc/qcom-spmi-vadc.c:133:15: error: field designator 'den' does not refer to any field in type 'const struct u32_fract' {.num = 1, .den = 10} ^ for (pre = 0; pre < ARRAY_SIZE(vadc_prescale_ratios); pre++) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/kernel.h:46:32: note: expanded from macro 'ARRAY_SIZE' #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr)) ^~~~~ if (vadc_prescale_ratios[pre].num == num && ~~~~~~~~~~~~~~~~~~~~~~~~~ ^ vadc_prescale_ratios[pre].den == den) ~~~~~~~~~~~~~~~~~~~~~~~~~ ^ fatal error: too many errors emitted, stopping now [-ferror-limit=] 20 errors generated. vim +293 drivers/iio/adc/qcom-vadc-common.c 082111e559055d Jishnu Prakash 2020-05-28 291 2d0db3a1312ad1 Andy Shevchenko 2022-01-10 292 static const struct u32_fract adc5_prescale_ratios[] = { c7ba98fc404305 Dmitry Baryshkov 2020-12-04 @293 {.num = 1, .den = 1}, c7ba98fc404305 Dmitry Baryshkov 2020-12-04 294 {.num = 1, .den = 3}, c7ba98fc404305 Dmitry Baryshkov 2020-12-04 295 {.num = 1, .den = 4}, c7ba98fc404305 Dmitry Baryshkov 2020-12-04 296 {.num = 1, .den = 6}, c7ba98fc404305 Dmitry Baryshkov 2020-12-04 297 {.num = 1, .den = 20}, c7ba98fc404305 Dmitry Baryshkov 2020-12-04 298 {.num = 1, .den = 8}, c7ba98fc404305 Dmitry Baryshkov 2020-12-04 299 {.num = 10, .den = 81}, c7ba98fc404305 Dmitry Baryshkov 2020-12-04 300 {.num = 1, .den = 10}, c7ba98fc404305 Dmitry Baryshkov 2020-12-04 301 {.num = 1, .den = 16} c7ba98fc404305 Dmitry Baryshkov 2020-12-04 302 }; c7ba98fc404305 Dmitry Baryshkov 2020-12-04 303 e13d757279bbc5 Siddartha Mohanadoss 2018-08-02 304 static int qcom_vadc_scale_hw_calib_volt( 2d0db3a1312ad1 Andy Shevchenko 2022-01-10 305 const struct u32_fract *prescale, e13d757279bbc5 Siddartha Mohanadoss 2018-08-02 306 const struct adc5_data *data, e13d757279bbc5 Siddartha Mohanadoss 2018-08-02 307 u16 adc_code, int *result_uv); e13d757279bbc5 Siddartha Mohanadoss 2018-08-02 308 static int qcom_vadc_scale_hw_calib_therm( 2d0db3a1312ad1 Andy Shevchenko 2022-01-10 309 const struct u32_fract *prescale, e13d757279bbc5 Siddartha Mohanadoss 2018-08-02 310 const struct adc5_data *data, e13d757279bbc5 Siddartha Mohanadoss 2018-08-02 311 u16 adc_code, int *result_mdec); 082111e559055d Jishnu Prakash 2020-05-28 312 static int qcom_vadc7_scale_hw_calib_therm( 2d0db3a1312ad1 Andy Shevchenko 2022-01-10 313 const struct u32_fract *prescale, 082111e559055d Jishnu Prakash 2020-05-28 314 const struct adc5_data *data, 082111e559055d Jishnu Prakash 2020-05-28 315 u16 adc_code, int *result_mdec); e13d757279bbc5 Siddartha Mohanadoss 2018-08-02 316 static int qcom_vadc_scale_hw_smb_temp( 2d0db3a1312ad1 Andy Shevchenko 2022-01-10 317 const struct u32_fract *prescale, e13d757279bbc5 Siddartha Mohanadoss 2018-08-02 318 const struct adc5_data *data, e13d757279bbc5 Siddartha Mohanadoss 2018-08-02 319 u16 adc_code, int *result_mdec); e13d757279bbc5 Siddartha Mohanadoss 2018-08-02 320 static int qcom_vadc_scale_hw_chg5_temp( 2d0db3a1312ad1 Andy Shevchenko 2022-01-10 321 const struct u32_fract *prescale, e13d757279bbc5 Siddartha Mohanadoss 2018-08-02 322 const struct adc5_data *data, e13d757279bbc5 Siddartha Mohanadoss 2018-08-02 323 u16 adc_code, int *result_mdec); e13d757279bbc5 Siddartha Mohanadoss 2018-08-02 324 static int qcom_vadc_scale_hw_calib_die_temp( 2d0db3a1312ad1 Andy Shevchenko 2022-01-10 325 const struct u32_fract *prescale, e13d757279bbc5 Siddartha Mohanadoss 2018-08-02 326 const struct adc5_data *data, e13d757279bbc5 Siddartha Mohanadoss 2018-08-02 327 u16 adc_code, int *result_mdec); 082111e559055d Jishnu Prakash 2020-05-28 328 static int qcom_vadc7_scale_hw_calib_die_temp( 2d0db3a1312ad1 Andy Shevchenko 2022-01-10 329 const struct u32_fract *prescale, 082111e559055d Jishnu Prakash 2020-05-28 330 const struct adc5_data *data, 082111e559055d Jishnu Prakash 2020-05-28 331 u16 adc_code, int *result_mdec); e13d757279bbc5 Siddartha Mohanadoss 2018-08-02 332 e13d757279bbc5 Siddartha Mohanadoss 2018-08-02 333 static struct qcom_adc5_scale_type scale_adc5_fn[] = { e13d757279bbc5 Siddartha Mohanadoss 2018-08-02 334 [SCALE_HW_CALIB_DEFAULT] = {qcom_vadc_scale_hw_calib_volt}, e13d757279bbc5 Siddartha Mohanadoss 2018-08-02 335 [SCALE_HW_CALIB_THERM_100K_PULLUP] = {qcom_vadc_scale_hw_calib_therm}, e13d757279bbc5 Siddartha Mohanadoss 2018-08-02 336 [SCALE_HW_CALIB_XOTHERM] = {qcom_vadc_scale_hw_calib_therm}, 082111e559055d Jishnu Prakash 2020-05-28 337 [SCALE_HW_CALIB_THERM_100K_PU_PM7] = { 082111e559055d Jishnu Prakash 2020-05-28 338 qcom_vadc7_scale_hw_calib_therm}, e13d757279bbc5 Siddartha Mohanadoss 2018-08-02 339 [SCALE_HW_CALIB_PMIC_THERM] = {qcom_vadc_scale_hw_calib_die_temp}, 082111e559055d Jishnu Prakash 2020-05-28 340 [SCALE_HW_CALIB_PMIC_THERM_PM7] = { 082111e559055d Jishnu Prakash 2020-05-28 341 qcom_vadc7_scale_hw_calib_die_temp}, e13d757279bbc5 Siddartha Mohanadoss 2018-08-02 342 [SCALE_HW_CALIB_PM5_CHG_TEMP] = {qcom_vadc_scale_hw_chg5_temp}, e13d757279bbc5 Siddartha Mohanadoss 2018-08-02 343 [SCALE_HW_CALIB_PM5_SMB_TEMP] = {qcom_vadc_scale_hw_smb_temp}, e13d757279bbc5 Siddartha Mohanadoss 2018-08-02 344 }; e13d757279bbc5 Siddartha Mohanadoss 2018-08-02 345 e932d4f041a487 Linus Walleij 2017-04-04 346 static int qcom_vadc_map_voltage_temp(const struct vadc_map_pt *pts, e13d757279bbc5 Siddartha Mohanadoss 2018-08-02 347 u32 tablesize, s32 input, int *output) e932d4f041a487 Linus Walleij 2017-04-04 348 { e932d4f041a487 Linus Walleij 2017-04-04 349 u32 i = 0; e932d4f041a487 Linus Walleij 2017-04-04 350 e932d4f041a487 Linus Walleij 2017-04-04 351 if (!pts) e932d4f041a487 Linus Walleij 2017-04-04 352 return -EINVAL; e932d4f041a487 Linus Walleij 2017-04-04 353 48d2e2ff85ddf7 Dmitry Baryshkov 2020-12-04 354 while (i < tablesize && pts[i].x > input) e932d4f041a487 Linus Walleij 2017-04-04 355 i++; e932d4f041a487 Linus Walleij 2017-04-04 356 e932d4f041a487 Linus Walleij 2017-04-04 357 if (i == 0) { e932d4f041a487 Linus Walleij 2017-04-04 358 *output = pts[0].y; e932d4f041a487 Linus Walleij 2017-04-04 359 } else if (i == tablesize) { e932d4f041a487 Linus Walleij 2017-04-04 360 *output = pts[tablesize - 1].y; e932d4f041a487 Linus Walleij 2017-04-04 361 } else { e932d4f041a487 Linus Walleij 2017-04-04 362 /* interpolate linearly */ e2621acd6d9af5 Dmitry Baryshkov 2020-12-04 363 *output = fixp_linear_interpolate(pts[i - 1].x, pts[i - 1].y, e2621acd6d9af5 Dmitry Baryshkov 2020-12-04 364 pts[i].x, pts[i].y, e2621acd6d9af5 Dmitry Baryshkov 2020-12-04 365 input); e932d4f041a487 Linus Walleij 2017-04-04 366 } e932d4f041a487 Linus Walleij 2017-04-04 367 e932d4f041a487 Linus Walleij 2017-04-04 368 return 0; e932d4f041a487 Linus Walleij 2017-04-04 369 } e932d4f041a487 Linus Walleij 2017-04-04 370 ca66dca5eda6bd Dmitry Baryshkov 2021-02-05 371 static s32 qcom_vadc_map_temp_voltage(const struct vadc_map_pt *pts, ca66dca5eda6bd Dmitry Baryshkov 2021-02-05 372 u32 tablesize, int input) ca66dca5eda6bd Dmitry Baryshkov 2021-02-05 373 { ca66dca5eda6bd Dmitry Baryshkov 2021-02-05 374 u32 i = 0; ca66dca5eda6bd Dmitry Baryshkov 2021-02-05 375 ca66dca5eda6bd Dmitry Baryshkov 2021-02-05 376 /* ca66dca5eda6bd Dmitry Baryshkov 2021-02-05 377 * Table must be sorted, find the interval of 'y' which contains value ca66dca5eda6bd Dmitry Baryshkov 2021-02-05 378 * 'input' and map it to proper 'x' value ca66dca5eda6bd Dmitry Baryshkov 2021-02-05 379 */ ca66dca5eda6bd Dmitry Baryshkov 2021-02-05 380 while (i < tablesize && pts[i].y < input) ca66dca5eda6bd Dmitry Baryshkov 2021-02-05 381 i++; ca66dca5eda6bd Dmitry Baryshkov 2021-02-05 382 ca66dca5eda6bd Dmitry Baryshkov 2021-02-05 383 if (i == 0) ca66dca5eda6bd Dmitry Baryshkov 2021-02-05 384 return pts[0].x; ca66dca5eda6bd Dmitry Baryshkov 2021-02-05 385 if (i == tablesize) ca66dca5eda6bd Dmitry Baryshkov 2021-02-05 386 return pts[tablesize - 1].x; ca66dca5eda6bd Dmitry Baryshkov 2021-02-05 387 ca66dca5eda6bd Dmitry Baryshkov 2021-02-05 388 /* interpolate linearly */ ca66dca5eda6bd Dmitry Baryshkov 2021-02-05 389 return fixp_linear_interpolate(pts[i - 1].y, pts[i - 1].x, ca66dca5eda6bd Dmitry Baryshkov 2021-02-05 390 pts[i].y, pts[i].x, input); ca66dca5eda6bd Dmitry Baryshkov 2021-02-05 391 } ca66dca5eda6bd Dmitry Baryshkov 2021-02-05 392 e932d4f041a487 Linus Walleij 2017-04-04 393 static void qcom_vadc_scale_calib(const struct vadc_linear_graph *calib_graph, e932d4f041a487 Linus Walleij 2017-04-04 394 u16 adc_code, e932d4f041a487 Linus Walleij 2017-04-04 395 bool absolute, e932d4f041a487 Linus Walleij 2017-04-04 396 s64 *scale_voltage) e932d4f041a487 Linus Walleij 2017-04-04 397 { e932d4f041a487 Linus Walleij 2017-04-04 398 *scale_voltage = (adc_code - calib_graph->gnd); e932d4f041a487 Linus Walleij 2017-04-04 399 *scale_voltage *= calib_graph->dx; e932d4f041a487 Linus Walleij 2017-04-04 400 *scale_voltage = div64_s64(*scale_voltage, calib_graph->dy); e932d4f041a487 Linus Walleij 2017-04-04 401 if (absolute) e932d4f041a487 Linus Walleij 2017-04-04 402 *scale_voltage += calib_graph->dx; e932d4f041a487 Linus Walleij 2017-04-04 403 e932d4f041a487 Linus Walleij 2017-04-04 404 if (*scale_voltage < 0) e932d4f041a487 Linus Walleij 2017-04-04 405 *scale_voltage = 0; e932d4f041a487 Linus Walleij 2017-04-04 406 } e932d4f041a487 Linus Walleij 2017-04-04 407 e932d4f041a487 Linus Walleij 2017-04-04 408 static int qcom_vadc_scale_volt(const struct vadc_linear_graph *calib_graph, 2d0db3a1312ad1 Andy Shevchenko 2022-01-10 409 const struct u32_fract *prescale, e932d4f041a487 Linus Walleij 2017-04-04 410 bool absolute, u16 adc_code, e932d4f041a487 Linus Walleij 2017-04-04 411 int *result_uv) e932d4f041a487 Linus Walleij 2017-04-04 412 { e932d4f041a487 Linus Walleij 2017-04-04 413 s64 voltage = 0, result = 0; e932d4f041a487 Linus Walleij 2017-04-04 414 e932d4f041a487 Linus Walleij 2017-04-04 415 qcom_vadc_scale_calib(calib_graph, adc_code, absolute, &voltage); e932d4f041a487 Linus Walleij 2017-04-04 416 e932d4f041a487 Linus Walleij 2017-04-04 @417 voltage = voltage * prescale->den; e932d4f041a487 Linus Walleij 2017-04-04 418 result = div64_s64(voltage, prescale->num); e932d4f041a487 Linus Walleij 2017-04-04 419 *result_uv = result; e932d4f041a487 Linus Walleij 2017-04-04 420 e932d4f041a487 Linus Walleij 2017-04-04 421 return 0; e932d4f041a487 Linus Walleij 2017-04-04 422 } e932d4f041a487 Linus Walleij 2017-04-04 423 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org