Re: [PATCH v3 1/3] input: pm8xxx-vib: refactor to easily support new SPMI vibrator

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

Hi Fenglin,

kernel test robot noticed the following build warnings:

[auto build test WARNING on dtor-input/next]
[also build test WARNING on dtor-input/for-linus linus/master v6.5-rc3 next-20230725]
[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/Fenglin-Wu/input-pm8xxx-vib-refactor-to-easily-support-new-SPMI-vibrator/20230725-134504
base:   https://git.kernel.org/pub/scm/linux/kernel/git/dtor/input.git next
patch link:    https://lore.kernel.org/r/20230725054138.129497-2-quic_fenglinw%40quicinc.com
patch subject: [PATCH v3 1/3] input: pm8xxx-vib: refactor to easily support new SPMI vibrator
config: x86_64-buildonly-randconfig-r002-20230725 (https://download.01.org/0day-ci/archive/20230725/202307251741.PMtlVAgD-lkp@intel.com/config)
compiler: clang version 15.0.7 (https://github.com/llvm/llvm-project.git 8dfdcc7b7bf66834a761bd8de445840ef68e4d1a)
reproduce: (https://download.01.org/0day-ci/archive/20230725/202307251741.PMtlVAgD-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/202307251741.PMtlVAgD-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/input/misc/pm8xxx-vibrator.c:190:17: warning: cast to smaller integer type 'enum pm8xxx_vib_type' from 'const void *' [-Wvoid-pointer-to-enum-cast]
           vib->hw_type = (enum pm8xxx_vib_type)of_device_get_match_data(dev);
                          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   1 warning generated.


vim +190 drivers/input/misc/pm8xxx-vibrator.c

   163	
   164	static int pm8xxx_vib_probe(struct platform_device *pdev)
   165	{
   166		struct pm8xxx_vib *vib;
   167		struct input_dev *input_dev;
   168		struct device *dev = &pdev->dev;
   169		struct regmap *regmap;
   170		struct reg_field *regs;
   171		int error, i;
   172		unsigned int val;
   173		u32 reg_base;
   174	
   175		vib = devm_kzalloc(dev, sizeof(*vib), GFP_KERNEL);
   176		if (!vib)
   177			return -ENOMEM;
   178	
   179		regmap = dev_get_regmap(dev->parent, NULL);
   180		if (!regmap)
   181			return -ENODEV;
   182	
   183		input_dev = devm_input_allocate_device(dev);
   184		if (!input_dev)
   185			return -ENOMEM;
   186	
   187		INIT_WORK(&vib->work, pm8xxx_work_handler);
   188		vib->vib_input_dev = input_dev;
   189	
 > 190		vib->hw_type = (enum pm8xxx_vib_type)of_device_get_match_data(dev);
   191	
   192		regs = ssbi_vib_regs;
   193		if (vib->hw_type != SSBI_VIB) {
   194			error = fwnode_property_read_u32(dev->fwnode, "reg", &reg_base);
   195			if (error < 0) {
   196				dev_err(dev, "Failed to read reg address, rc=%d\n", error);
   197				return error;
   198			}
   199	
   200			if (vib->hw_type == SPMI_VIB_GEN1)
   201				regs = spmi_vib_gen1_regs;
   202	
   203			for (i = 0; i < VIB_MAX_REG; i++)
   204				if (regs[i].reg != 0)
   205					regs[i].reg += reg_base;
   206		}
   207	
   208		error = devm_regmap_field_bulk_alloc(dev, regmap, vib->r_fields, regs, VIB_MAX_REG);
   209		if (error < 0)
   210		{
   211			dev_err(dev, "Failed to allocate regmap failed, rc=%d\n", error);
   212			return error;
   213		}
   214	
   215		error = regmap_field_read(vib->r_fields[VIB_DRV_REG], &val);
   216		if (error < 0)
   217			return error;
   218	
   219		/* operate in manual mode */
   220		if (vib->hw_type == SSBI_VIB) {
   221			val &= SSBI_VIB_DRV_EN_MANUAL_MASK;
   222			error = regmap_field_write(vib->r_fields[VIB_DRV_REG], val);
   223			if (error < 0)
   224				return error;
   225		}
   226	
   227		vib->reg_vib_drv = val;
   228	
   229		input_dev->name = "pm8xxx_vib_ffmemless";
   230		input_dev->id.version = 1;
   231		input_dev->close = pm8xxx_vib_close;
   232		input_set_drvdata(input_dev, vib);
   233		input_set_capability(vib->vib_input_dev, EV_FF, FF_RUMBLE);
   234	
   235		error = input_ff_create_memless(input_dev, NULL,
   236						pm8xxx_vib_play_effect);
   237		if (error) {
   238			dev_err(dev, "couldn't register vibrator as FF device\n");
   239			return error;
   240		}
   241	
   242		error = input_register_device(input_dev);
   243		if (error) {
   244			dev_err(dev, "couldn't register input device\n");
   245			return error;
   246		}
   247	
   248		platform_set_drvdata(pdev, vib);
   249		return 0;
   250	}
   251	

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