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 <l...@intel.com>
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
---
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