* [regulator:for-5.8 14/15] drivers/regulator/max8998.c:374:5: warning: no previous prototype for function 'max8998_set_current_limit'
@ 2020-05-23 7:19 kbuild test robot
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From: kbuild test robot @ 2020-05-23 7:19 UTC (permalink / raw)
To: kbuild-all
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator.git for-5.8
head: 0c680ffb99ea4022b97fbbf831da46b0f90958a5
commit: 4ffea5e083f8125fe273cf331ecb10d901eb64a2 [14/15] regulator: max8998: Add charger regulator
config: x86_64-randconfig-a011-20200521 (attached as .config)
compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 3393cc4cebf9969db94dc424b7a2b6195589c33b)
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 x86_64 cross compiling tool for clang build
# apt-get install binutils-x86-64-linux-gnu
git checkout 4ffea5e083f8125fe273cf331ecb10d901eb64a2
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64
If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot <lkp@intel.com>
All warnings (new ones prefixed by >>, old ones prefixed by <<):
>> drivers/regulator/max8998.c:374:5: warning: no previous prototype for function 'max8998_set_current_limit' [-Wmissing-prototypes]
int max8998_set_current_limit(struct regulator_dev *rdev,
^
drivers/regulator/max8998.c:374:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
int max8998_set_current_limit(struct regulator_dev *rdev,
^
static
>> drivers/regulator/max8998.c:418:5: warning: no previous prototype for function 'max8998_get_current_limit' [-Wmissing-prototypes]
int max8998_get_current_limit(struct regulator_dev *rdev)
^
drivers/regulator/max8998.c:418:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
int max8998_get_current_limit(struct regulator_dev *rdev)
^
static
2 warnings generated.
vim +/max8998_set_current_limit +374 drivers/regulator/max8998.c
373
> 374 int max8998_set_current_limit(struct regulator_dev *rdev,
375 int min_uA, int max_uA)
376 {
377 struct max8998_data *max8998 = rdev_get_drvdata(rdev);
378 struct i2c_client *i2c = max8998->iodev->i2c;
379 unsigned int n_currents = rdev->desc->n_current_limits;
380 int i, sel = -1;
381
382 if (n_currents == 0)
383 return -EINVAL;
384
385 if (rdev->desc->curr_table) {
386 const unsigned int *curr_table = rdev->desc->curr_table;
387 bool ascend = curr_table[n_currents - 1] > curr_table[0];
388
389 /* search for closest to maximum */
390 if (ascend) {
391 for (i = n_currents - 1; i >= 0; i--) {
392 if (min_uA <= curr_table[i] &&
393 curr_table[i] <= max_uA) {
394 sel = i;
395 break;
396 }
397 }
398 } else {
399 for (i = 0; i < n_currents; i++) {
400 if (min_uA <= curr_table[i] &&
401 curr_table[i] <= max_uA) {
402 sel = i;
403 break;
404 }
405 }
406 }
407 }
408
409 if (sel < 0)
410 return -EINVAL;
411
412 sel <<= ffs(rdev->desc->csel_mask) - 1;
413
414 return max8998_update_reg(i2c, rdev->desc->csel_reg,
415 sel, rdev->desc->csel_mask);
416 }
417
> 418 int max8998_get_current_limit(struct regulator_dev *rdev)
419 {
420 struct max8998_data *max8998 = rdev_get_drvdata(rdev);
421 struct i2c_client *i2c = max8998->iodev->i2c;
422 u8 val;
423 int ret;
424
425 ret = max8998_read_reg(i2c, rdev->desc->csel_reg, &val);
426 if (ret != 0)
427 return ret;
428
429 val &= rdev->desc->csel_mask;
430 val >>= ffs(rdev->desc->csel_mask) - 1;
431
432 if (rdev->desc->curr_table) {
433 if (val >= rdev->desc->n_current_limits)
434 return -EINVAL;
435
436 return rdev->desc->curr_table[val];
437 }
438
439 return -EINVAL;
440 }
441
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
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2020-05-23 7:19 [regulator:for-5.8 14/15] drivers/regulator/max8998.c:374:5: warning: no previous prototype for function 'max8998_set_current_limit' kbuild test robot
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