Re: [PATCH] [regulator] pwm-regulator: Add error handling

[kernel test robot <lkp@intel.com>]

Hi Haoran,

kernel test robot noticed the following build errors:

[auto build test ERROR on v6.7-rc3]
[also build test ERROR on linus/master next-20231129]
[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#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Haoran-Liu/pwm-regulator-Add-error-handling/20231129-210930
base:   v6.7-rc3
patch link:    https://lore.kernel.org/r/20231129130530.33744-1-liuhaoran14%40163.com
patch subject: [PATCH] [regulator] pwm-regulator: Add error handling
config: x86_64-buildonly-randconfig-004-20231130 (https://download.01.org/0day-ci/archive/20231130/202311300301.wF0bkQA5-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231130/202311300301.wF0bkQA5-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202311300301.wF0bkQA5-lkp@intel.com/

All errors (new ones prefixed by >>):

   drivers/regulator/pwm-regulator.c: In function 'pwm_regulator_init_continuous':
>> drivers/regulator/pwm-regulator.c:299:9: error: 'ret' undeclared (first use in this function); did you mean 'net'?
     299 |         ret = of_property_read_u32_array(pdev->dev.of_node,
         |         ^~~
         |         net
   drivers/regulator/pwm-regulator.c:299:9: note: each undeclared identifier is reported only once for each function it appears in


vim +299 drivers/regulator/pwm-regulator.c

   289	
   290	static int pwm_regulator_init_continuous(struct platform_device *pdev,
   291						 struct pwm_regulator_data *drvdata)
   292	{
   293		u32 dutycycle_range[2] = { 0, 100 };
   294		u32 dutycycle_unit = 100;
   295	
   296		drvdata->desc.ops = &pwm_regulator_voltage_continuous_ops;
   297		drvdata->desc.continuous_voltage_range = true;
   298	
 > 299		ret = of_property_read_u32_array(pdev->dev.of_node,
   300						"pwm-dutycycle-range",
   301						dutycycle_range, 2);
   302		if (ret) {
   303			dev_err(&pdev->dev,
   304				"Failed to read pwm-dutycycle-range: %d\n", ret);
   305			return ret;
   306		}
   307	
   308		ret = of_property_read_u32(pdev->dev.of_node,
   309						"pwm-dutycycle-unit",
   310						&dutycycle_unit);
   311		if (ret) {
   312			dev_err(&pdev->dev,
   313				"Failed to read pwm-dutycycle-unit: %d\n", ret);
   314			return ret;
   315		}
   316	
   317		if (dutycycle_range[0] > dutycycle_unit ||
   318		    dutycycle_range[1] > dutycycle_unit)
   319			return -EINVAL;
   320	
   321		drvdata->continuous.dutycycle_unit = dutycycle_unit;
   322		drvdata->continuous.min_uV_dutycycle = dutycycle_range[0];
   323		drvdata->continuous.max_uV_dutycycle = dutycycle_range[1];
   324	
   325		return 0;
   326	}
   327	

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