Re: [RESEND 13/14] leds: flashlight: mt6370: Add Mediatek MT6370 flashlight support

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Hi ChiaEn,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on pavel-leds/for-next]
[also build test WARNING on lee-mfd/for-mfd-next lee-backlight/for-backlight-next v5.18 next-20220602]
[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/ChiaEn-Wu/Add-Mediatek-MT6370-PMIC-support/20220531-211432
base:   git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds.git for-next
config: nios2-allyesconfig (https://download.01.org/0day-ci/archive/20220602/202206021739.LZjU7zjg-lkp@xxxxxxxxx/config)
compiler: nios2-linux-gcc (GCC) 11.3.0
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/805a8af17c769562ec4b85e9b7d2669d004fe3a6
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review ChiaEn-Wu/Add-Mediatek-MT6370-PMIC-support/20220531-211432
        git checkout 805a8af17c769562ec4b85e9b7d2669d004fe3a6
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=nios2 SHELL=/bin/bash drivers/gpu/drm/v3d/ drivers/leds/ sound/core/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All warnings (new ones prefixed by >>):

   In file included from include/linux/device.h:15,
                    from include/linux/leds.h:12,
                    from include/linux/led-class-flash.h:11,
                    from drivers/leds/flash/leds-mt6370-flash.c:8:
   drivers/leds/flash/leds-mt6370-flash.c: In function 'mt6370_led_probe':
>> drivers/leds/flash/leds-mt6370-flash.c:591:17: warning: format '%lu' expects argument of type 'long unsigned int', but argument 3 has type 'size_t' {aka 'unsigned int'} [-Wformat=]
     591 |                 "No child node or node count over max led number %lu\n", count);
         |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/dev_printk.h:110:30: note: in definition of macro 'dev_printk_index_wrap'
     110 |                 _p_func(dev, fmt, ##__VA_ARGS__);                       \
         |                              ^~~
   include/linux/dev_printk.h:144:56: note: in expansion of macro 'dev_fmt'
     144 |         dev_printk_index_wrap(_dev_err, KERN_ERR, dev, dev_fmt(fmt), ##__VA_ARGS__)
         |                                                        ^~~~~~~
   drivers/leds/flash/leds-mt6370-flash.c:590:17: note: in expansion of macro 'dev_err'
     590 |                 dev_err(&pdev->dev,
         |                 ^~~~~~~
   drivers/leds/flash/leds-mt6370-flash.c:591:68: note: format string is defined here
     591 |                 "No child node or node count over max led number %lu\n", count);
         |                                                                  ~~^
         |                                                                    |
         |                                                                    long unsigned int
         |                                                                  %u


vim +591 drivers/leds/flash/leds-mt6370-flash.c

   580	
   581	static int mt6370_led_probe(struct platform_device *pdev)
   582	{
   583		struct mt6370_priv *priv;
   584		struct fwnode_handle *child;
   585		size_t count;
   586		int i = 0, ret;
   587	
   588		count = device_get_child_node_count(&pdev->dev);
   589		if (!count || count > MT6370_MAX_LEDS) {
   590			dev_err(&pdev->dev,
 > 591			"No child node or node count over max led number %lu\n", count);
   592			return -EINVAL;
   593		}
   594	
   595		priv = devm_kzalloc(&pdev->dev, struct_size(priv, leds, count),
   596				    GFP_KERNEL);
   597		if (!priv)
   598			return -ENOMEM;
   599	
   600		priv->leds_count = count;
   601		priv->dev = &pdev->dev;
   602		mutex_init(&priv->lock);
   603	
   604		priv->regmap = dev_get_regmap(pdev->dev.parent, NULL);
   605		if (!priv->regmap) {
   606			dev_err(&pdev->dev, "Failed to get parent regmap\n");
   607			return -ENODEV;
   608		}
   609	
   610		device_for_each_child_node(&pdev->dev, child) {
   611			struct mt6370_led *led = priv->leds + i;
   612			struct led_init_data init_data = { .fwnode = child, };
   613	
   614			led->priv = priv;
   615			ret = mt6370_init_common_properties(led, &init_data);
   616			if (ret)
   617				goto out_flash_release;
   618	
   619			ret = mt6370_init_flash_properties(led, &init_data);
   620	
   621			if (ret)
   622				goto out_flash_release;
   623	
   624			ret = mt6370_led_register(&pdev->dev, led, &init_data);
   625			if (ret)
   626				goto out_flash_release;
   627	
   628			i++;
   629		}
   630	
   631		platform_set_drvdata(pdev, priv);
   632		return 0;
   633	
   634	out_flash_release:
   635		mt6370_v4l2_flash_release(priv);
   636		return ret;
   637	}
   638	

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp



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