linux-kernel - Re: [PATCH v1 1/1] leds: pca955x: Get rid of custom led_init_default_state

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Date:   Wed, 3 Aug 2022 08:13:45 +0800
From:   kernel test robot <lkp@...el.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Pavel Machek <pavel@....cz>,
        Eddie James <eajames@...ux.ibm.com>,
        linux-leds@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: Re: [PATCH v1 1/1] leds: pca955x: Get rid of custom
 led_init_default_state_get()

Hi Andy,

I love your patch! Yet something to improve:

[auto build test ERROR on pavel-leds/for-next]
[also build test ERROR on linus/master v5.19 next-20220728]
[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/Andy-Shevchenko/leds-pca955x-Get-rid-of-custom-led_init_default_state_get/20220803-052712
base:   git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds.git for-next
config: x86_64-randconfig-a002-20220801 (https://download.01.org/0day-ci/archive/20220803/202208030828.HPkXzKSf-lkp@intel.com/config)
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 52cd00cabf479aa7eb6dbb063b7ba41ea57bce9e)
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/46936c7c7d9d52d3029e319fc78b727a9e0fc046
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Andy-Shevchenko/leds-pca955x-Get-rid-of-custom-led_init_default_state_get/20220803-052712
        git checkout 46936c7c7d9d52d3029e319fc78b727a9e0fc046
        # 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=x86_64 SHELL=/bin/bash drivers/leds/

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

All error/warnings (new ones prefixed by >>):

>> drivers/leds/leds-pca955x.c:457:24: error: call to undeclared function 'led_init_default_state_get'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
                   led->default_state = led_init_default_state_get(child);
                                        ^
>> drivers/leds/leds-pca955x.c:446:15: warning: unused variable 'state' [-Wunused-variable]
                   const char *state;
                               ^
   drivers/leds/leds-pca955x.c:494:15: warning: cast to smaller integer type 'enum pca955x_type' from 'const void *' [-Wvoid-pointer-to-enum-cast]
                   chip_type = (enum pca955x_type)md;
                               ^~~~~~~~~~~~~~~~~~~~~
   2 warnings and 1 error generated.


vim +/led_init_default_state_get +457 drivers/leds/leds-pca955x.c

   422	
   423	static struct pca955x_platform_data *
   424	pca955x_get_pdata(struct i2c_client *client, struct pca955x_chipdef *chip)
   425	{
   426		struct pca955x_platform_data *pdata;
   427		struct pca955x_led *led;
   428		struct fwnode_handle *child;
   429		int count;
   430	
   431		count = device_get_child_node_count(&client->dev);
   432		if (count > chip->bits)
   433			return ERR_PTR(-ENODEV);
   434	
   435		pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL);
   436		if (!pdata)
   437			return ERR_PTR(-ENOMEM);
   438	
   439		pdata->leds = devm_kcalloc(&client->dev,
   440					   chip->bits, sizeof(struct pca955x_led),
   441					   GFP_KERNEL);
   442		if (!pdata->leds)
   443			return ERR_PTR(-ENOMEM);
   444	
   445		device_for_each_child_node(&client->dev, child) {
 > 446			const char *state;
   447			u32 reg;
   448			int res;
   449	
   450			res = fwnode_property_read_u32(child, "reg", &reg);
   451			if ((res != 0) || (reg >= chip->bits))
   452				continue;
   453	
   454			led = &pdata->leds[reg];
   455			led->type = PCA955X_TYPE_LED;
   456			led->fwnode = child;
 > 457			led->default_state = led_init_default_state_get(child);
   458	
   459			fwnode_property_read_u32(child, "type", &led->type);
   460		}
   461	
   462		pdata->num_leds = chip->bits;
   463	
   464		return pdata;
   465	}
   466	

-- 
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https://01.org/lkp