linux-kernel - Re: [PATCH 2/2] nvmem: Add RAVE SP EEPROM driver

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Message-ID: <201803231825.bRpdstGR%fengguang.wu@intel.com>
Date:   Fri, 23 Mar 2018 18:20:56 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Andrey Smirnov <andrew.smirnov@...il.com>
Cc:     kbuild-all@...org,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Andrey Smirnov <andrew.smirnov@...il.com>,
        linux-kernel@...r.kernel.org, Chris Healy <cphealy@...il.com>,
        Lucas Stach <l.stach@...gutronix.de>,
        Aleksander Morgado <aleksander@...ksander.es>
Subject: Re: [PATCH 2/2] nvmem: Add RAVE SP EEPROM driver

Hi Andrey,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on v4.16-rc6 next-20180322]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Andrey-Smirnov/dt-bindings-nvmem-Add-binding-for-RAVE-SP-EEPROM-driver/20180323-130858
config: sh-allmodconfig (attached as .config)
compiler: sh4-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=sh 

Note: the linux-review/Andrey-Smirnov/dt-bindings-nvmem-Add-binding-for-RAVE-SP-EEPROM-driver/20180323-130858 HEAD c74df185f384be5ad59649d893da92e2df54b967 builds fine.
      It only hurts bisectibility.

All errors (new ones prefixed by >>):

   drivers/nvmem/rave-sp-eeprom.c: In function 'rave_sp_eeprom_probe':
>> drivers/nvmem/rave-sp-eeprom.c:315:13: error: 'SZ_8K' undeclared (first use in this function)
     if (size > SZ_8K)
                ^~~~~
   drivers/nvmem/rave-sp-eeprom.c:315:13: note: each undeclared identifier is reported only once for each function it appears in
   drivers/nvmem/rave-sp-eeprom.c:332:10: error: implicit declaration of function 'devm_nvmem_register'; did you mean 'nvmem_register'? [-Werror=implicit-function-declaration]
     nvmem = devm_nvmem_register(dev, &config);
             ^~~~~~~~~~~~~~~~~~~
             nvmem_register
   drivers/nvmem/rave-sp-eeprom.c:332:8: warning: assignment makes pointer from integer without a cast [-Wint-conversion]
     nvmem = devm_nvmem_register(dev, &config);
           ^
   cc1: some warnings being treated as errors

vim +/SZ_8K +315 drivers/nvmem/rave-sp-eeprom.c

   281	
   282	static int rave_sp_eeprom_probe(struct platform_device *pdev)
   283	{
   284		struct device *dev = &pdev->dev;
   285		struct rave_sp *sp = dev_get_drvdata(dev->parent);
   286		struct device_node *np = dev->of_node;
   287		struct nvmem_config config = { 0 };
   288		struct rave_sp_eeprom *eeprom;
   289		struct nvmem_device *nvmem;
   290		u32 reg[2], size;
   291	
   292		if (of_property_read_u32_array(np, "reg", reg, ARRAY_SIZE(reg))) {
   293			dev_err(dev, "Failed to parse \"reg\" property\n");
   294			return -EINVAL;
   295		}
   296	
   297		size = reg[1];
   298		/*
   299		 * Per ICD, we have no more than 2 bytes to specify EEPROM
   300		 * page.
   301		 */
   302		if (size > U16_MAX * RAVE_SP_EEPROM_PAGE_SIZE) {
   303			dev_err(dev, "Specified size is too big\n");
   304			return -EINVAL;
   305		}
   306	
   307		eeprom = devm_kzalloc(dev, sizeof(*eeprom), GFP_KERNEL);
   308		if (!eeprom)
   309			return -ENOMEM;
   310	
   311		eeprom->address = reg[0];
   312		eeprom->sp      = sp;
   313		eeprom->dev     = dev;
   314	
 > 315		if (size > SZ_8K)
   316			eeprom->header_size = RAVE_SP_EEPROM_HEADER_BIG;
   317		else
   318			eeprom->header_size = RAVE_SP_EEPROM_HEADER_SMALL;
   319	
   320		mutex_init(&eeprom->mutex);
   321	
   322		config.id		= -1;
   323		config.name		= dev->of_node->name;
   324		config.priv		= eeprom;
   325		config.dev		= dev;
   326		config.size		= size;
   327		config.reg_read		= rave_sp_eeprom_reg_read;
   328		config.reg_write	= rave_sp_eeprom_reg_write;
   329		config.word_size	= 1;
   330		config.stride		= 1;
   331	
   332		nvmem = devm_nvmem_register(dev, &config);
   333	
   334		return PTR_ERR_OR_ZERO(nvmem);
   335	}
   336	

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