tree: https://kernel.googlesource.com/pub/scm/linux/kernel/git/gregkh/staging.git staging-testing head: 74eb9c06b1d722468db397595ac6834b9e4ac235 commit: 473d12f7638c93acbd9296a8cd455b203d5eb528 [314/401] iio: hid-sensor-attributes: Convert to use int_pow() config: i386-randconfig-e004-201935 (attached as .config) compiler: gcc-7 (Debian 7.4.0-11) 7.4.0 reproduce: git checkout 473d12f7638c93acbd9296a8cd455b203d5eb528 # save the attached .config to linux build tree make ARCH=i386 If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): ld: drivers/iio/common/hid-sensors/hid-sensor-attributes.o: in function `adjust_exponent_nano': >> drivers/iio/common/hid-sensors/hid-sensor-attributes.c:312: undefined reference to `__udivdi3' >> ld: drivers/iio/common/hid-sensors/hid-sensor-attributes.c:314: undefined reference to `__umoddi3' >> ld: drivers/iio/common/hid-sensors/hid-sensor-attributes.c:324: undefined reference to `__udivdi3' ld: drivers/iio/common/hid-sensors/hid-sensor-attributes.c:325: undefined reference to `__umoddi3' ld: drivers/iio/common/hid-sensors/hid-sensor-attributes.c:328: undefined reference to `__udivdi3' ld: drivers/iio/common/hid-sensors/hid-sensor-attributes.c:330: undefined reference to `__umoddi3' ld: drivers/iio/common/hid-sensors/hid-sensor-attributes.o: in function `split_micro_fraction': drivers/iio/common/hid-sensors/hid-sensor-attributes.c:96: undefined reference to `__udivdi3' ld: drivers/iio/common/hid-sensors/hid-sensor-attributes.c:97: undefined reference to `__umoddi3' ld: drivers/iio/common/hid-sensors/hid-sensor-attributes.o: in function `convert_to_vtf_format': drivers/iio/common/hid-sensors/hid-sensor-attributes.c:140: undefined reference to `__udivdi3' ld: drivers/iio/common/hid-sensors/hid-sensor-attributes.c:142: undefined reference to `__udivdi3' ld: drivers/iio/common/hid-sensors/hid-sensor-attributes.o: in function `hid_sensor_write_samp_freq_value': drivers/iio/common/hid-sensors/hid-sensor-attributes.c:208: undefined reference to `__udivdi3' ld: drivers/iio/common/hid-sensors/hid-sensor-attributes.c:210: undefined reference to `__udivdi3' vim +312 drivers/iio/common/hid-sensors/hid-sensor-attributes.c 284 285 /* 286 * This fuction applies the unit exponent to the scale. 287 * For example: 288 * 9.806650000 ->exp:2-> val0[980]val1[665000000] 289 * 9.000806000 ->exp:2-> val0[900]val1[80600000] 290 * 0.174535293 ->exp:2-> val0[17]val1[453529300] 291 * 1.001745329 ->exp:0-> val0[1]val1[1745329] 292 * 1.001745329 ->exp:2-> val0[100]val1[174532900] 293 * 1.001745329 ->exp:4-> val0[10017]val1[453290000] 294 * 9.806650000 ->exp:-2-> val0[0]val1[98066500] 295 */ 296 static void adjust_exponent_nano(int *val0, int *val1, int scale0, 297 int scale1, int exp) 298 { 299 int i; 300 int x; 301 int res; 302 int rem; 303 304 if (exp > 0) { 305 *val0 = scale0 * int_pow(10, exp); 306 res = 0; 307 if (exp > 9) { 308 *val1 = 0; 309 return; 310 } 311 for (i = 0; i < exp; ++i) { > 312 x = scale1 / int_pow(10, 8 - i); 313 res += int_pow(10, exp - 1 - i) * x; > 314 scale1 = scale1 % int_pow(10, 8 - i); 315 } 316 *val0 += res; 317 *val1 = scale1 * int_pow(10, exp); 318 } else if (exp < 0) { 319 exp = abs(exp); 320 if (exp > 9) { 321 *val0 = *val1 = 0; 322 return; 323 } > 324 *val0 = scale0 / int_pow(10, exp); 325 rem = scale0 % int_pow(10, exp); 326 res = 0; 327 for (i = 0; i < (9 - exp); ++i) { 328 x = scale1 / int_pow(10, 8 - i); 329 res += int_pow(10, 8 - exp - i) * x; 330 scale1 = scale1 % int_pow(10, 8 - i); 331 } 332 *val1 = rem * int_pow(10, 9 - exp) + res; 333 } else { 334 *val0 = scale0; 335 *val1 = scale1; 336 } 337 } 338 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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