[PATCH v3 1/3] regulator: Add regulator_bulk_get_all

[kernel test robot]

Hi Corentin,

I love your patch! Yet something to improve:

[auto build test ERROR on broonie-regulator/for-next]
[also build test ERROR on sunxi/sunxi/for-next linus/master v5.18 next-20220520]
[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/intel-lab-lkp/linux/commits/Corentin-Labbe/arm64-add-ethernet-to-orange-pi-3/20220523-133344
base:   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator.git for-next
config: hexagon-buildonly-randconfig-r002-20220522 (https://download.01.org/0day-ci/archive/20220523/202205231709.3Wo0pW9z-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 768a1ca5eccb678947f4155e38a5f5744dcefb56)
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
        # https://github.com/intel-lab-lkp/linux/commit/179be86f748a2cce87423bb16f4f967c97bf5d9b
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Corentin-Labbe/arm64-add-ethernet-to-orange-pi-3/20220523-133344
        git checkout 179be86f748a2cce87423bb16f4f967c97bf5d9b
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash drivers/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp at intel.com>

All errors (new ones prefixed by >>):

>> drivers/regulator/core.c:4870:2: error: call to undeclared function 'for_each_property_of_node'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
           for_each_property_of_node(np, prop) {
           ^
>> drivers/regulator/core.c:4870:37: error: expected ';' after expression
           for_each_property_of_node(np, prop) {
                                              ^
                                              ;
>> drivers/regulator/core.c:4873:4: error: 'continue' statement not in loop statement
                           continue;
                           ^
   drivers/regulator/core.c:4876:4: error: 'continue' statement not in loop statement
                           continue;
                           ^
   drivers/regulator/core.c:4887:4: error: 'continue' statement not in loop statement
                           continue;
                           ^
   5 errors generated.


vim +/for_each_property_of_node +4870 drivers/regulator/core.c

  4839	
  4840	/*
  4841	 * regulator_bulk_get_all - get multiple regulator consumers
  4842	 *
  4843	 * @dev:	Device to supply
  4844	 * @np:		device node to search for consumers
  4845	 * @consumers:  Configuration of consumers; clients are stored here.
  4846	 *
  4847	 * @return number of regulators on success, an errno on failure.
  4848	 *
  4849	 * This helper function allows drivers to get several regulator
  4850	 * consumers in one operation.  If any of the regulators cannot be
  4851	 * acquired then any regulators that were allocated will be freed
  4852	 * before returning to the caller.
  4853	 */
  4854	int regulator_bulk_get_all(struct device *dev, struct device_node *np,
  4855				   struct regulator_bulk_data **consumers)
  4856	{
  4857		int num_consumers = 0;
  4858		struct regulator *tmp;
  4859		struct property *prop;
  4860		int i, n = 0, ret;
  4861		char name[64];
  4862	
  4863		*consumers = NULL;
  4864	
  4865	/*
  4866	 * first pass: get numbers of xxx-supply
  4867	 * second pass: fill consumers
  4868	 * */
  4869	restart:
> 4870		for_each_property_of_node(np, prop) {
  4871			i = is_supply_name(prop->name);
  4872			if (i == 0)
> 4873				continue;
  4874			if (!*consumers) {
  4875				num_consumers++;
  4876				continue;
  4877			} else {
  4878				memcpy(name, prop->name, i);
  4879				name[i] = '\0';
  4880				tmp = regulator_get(dev, name);
  4881				if (!tmp) {
  4882					ret = -EINVAL;
  4883					goto error;
  4884				}
  4885				(*consumers)[n].consumer = tmp;
  4886				n++;
  4887				continue;
  4888			}
  4889		}
  4890		if (*consumers)
  4891			return num_consumers;
  4892		if (num_consumers == 0)
  4893			return 0;
  4894		*consumers = kmalloc_array(num_consumers,
  4895					   sizeof(struct regulator_bulk_data),
  4896					   GFP_KERNEL);
  4897		if (!*consumers)
  4898			return -ENOMEM;
  4899		goto restart;
  4900	
  4901	error:
  4902		while (--n >= 0)
  4903			regulator_put(consumers[n]->consumer);
  4904		return ret;
  4905	}
  4906	EXPORT_SYMBOL_GPL(regulator_bulk_get_all);
  4907	

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