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Date: Thu, 27 Jun 2024 21:59:05 +0800
From: kernel test robot <lkp@...el.com>
To: Jean-Michel Hautbois <jeanmichel.hautbois@...eli.org>,
	Geert Uytterhoeven <geert@...ux-m68k.org>,
	Miquel Raynal <miquel.raynal@...tlin.com>,
	Richard Weinberger <richard@....at>,
	Vignesh Raghavendra <vigneshr@...com>,
	Stefan Agner <stefan@...er.ch>
Cc: oe-kbuild-all@...ts.linux.dev, linux-m68k@...ts.linux-m68k.org,
	linux-kernel@...r.kernel.org, linux-mtd@...ts.infradead.org,
	Jean-Michel Hautbois <jeanmichel.hautbois@...eli.org>
Subject: Re: [PATCH] mtd: nand: Add support for M5441x NFC

Hi Jean-Michel,

kernel test robot noticed the following build warnings:

[auto build test WARNING on e5b3efbe1ab1793bb49ae07d56d0973267e65112]

url:    https://github.com/intel-lab-lkp/linux/commits/Jean-Michel-Hautbois/mtd-nand-Add-support-for-M5441x-NFC/20240625-144333
base:   e5b3efbe1ab1793bb49ae07d56d0973267e65112
patch link:    https://lore.kernel.org/r/20240620-upstream-nfc-mcf5441x-v1-1-69b64807d7a6%40yoseli.org
patch subject: [PATCH] mtd: nand: Add support for M5441x NFC
config: sh-randconfig-001-20240627 (https://download.01.org/0day-ci/archive/20240627/202406272154.v694SvQb-lkp@intel.com/config)
compiler: sh4-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240627/202406272154.v694SvQb-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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202406272154.v694SvQb-lkp@intel.com/

All warnings (new ones prefixed by >>):

   drivers/mtd/nand/raw/vf610_nfc.c: In function 'vf610_nfc_probe':
>> drivers/mtd/nand/raw/vf610_nfc.c:844:29: warning: unused variable 'child' [-Wunused-variable]
     844 |         struct device_node *child;
         |                             ^~~~~


vim +/child +844 drivers/mtd/nand/raw/vf610_nfc.c

962c35ef1e6834 drivers/mtd/nand/raw/vf610_nfc.c Miquel Raynal        2018-07-20  837  
456930d80a2da1 drivers/mtd/nand/vf610_nfc.c     Stefan Agner         2015-09-02  838  static int vf610_nfc_probe(struct platform_device *pdev)
456930d80a2da1 drivers/mtd/nand/vf610_nfc.c     Stefan Agner         2015-09-02  839  {
456930d80a2da1 drivers/mtd/nand/vf610_nfc.c     Stefan Agner         2015-09-02  840  	struct vf610_nfc *nfc;
456930d80a2da1 drivers/mtd/nand/vf610_nfc.c     Stefan Agner         2015-09-02  841  	struct mtd_info *mtd;
456930d80a2da1 drivers/mtd/nand/vf610_nfc.c     Stefan Agner         2015-09-02  842  	struct nand_chip *chip;
8e5473c07a181c drivers/mtd/nand/raw/vf610_nfc.c Jean-Michel Hautbois 2024-06-20  843  	struct nand_chip *pdata;
456930d80a2da1 drivers/mtd/nand/vf610_nfc.c     Stefan Agner         2015-09-02 @844  	struct device_node *child;
456930d80a2da1 drivers/mtd/nand/vf610_nfc.c     Stefan Agner         2015-09-02  845  	int err;
456930d80a2da1 drivers/mtd/nand/vf610_nfc.c     Stefan Agner         2015-09-02  846  	int irq;
456930d80a2da1 drivers/mtd/nand/vf610_nfc.c     Stefan Agner         2015-09-02  847  
456930d80a2da1 drivers/mtd/nand/vf610_nfc.c     Stefan Agner         2015-09-02  848  	nfc = devm_kzalloc(&pdev->dev, sizeof(*nfc), GFP_KERNEL);
456930d80a2da1 drivers/mtd/nand/vf610_nfc.c     Stefan Agner         2015-09-02  849  	if (!nfc)
456930d80a2da1 drivers/mtd/nand/vf610_nfc.c     Stefan Agner         2015-09-02  850  		return -ENOMEM;
456930d80a2da1 drivers/mtd/nand/vf610_nfc.c     Stefan Agner         2015-09-02  851  
456930d80a2da1 drivers/mtd/nand/vf610_nfc.c     Stefan Agner         2015-09-02  852  	nfc->dev = &pdev->dev;
456930d80a2da1 drivers/mtd/nand/vf610_nfc.c     Stefan Agner         2015-09-02  853  	chip = &nfc->chip;
8e5473c07a181c drivers/mtd/nand/raw/vf610_nfc.c Jean-Michel Hautbois 2024-06-20  854  	pdata = dev_get_platdata(&pdev->dev);
8e5473c07a181c drivers/mtd/nand/raw/vf610_nfc.c Jean-Michel Hautbois 2024-06-20  855  	if (pdata)
8e5473c07a181c drivers/mtd/nand/raw/vf610_nfc.c Jean-Michel Hautbois 2024-06-20  856  		*chip = *pdata;
8e5473c07a181c drivers/mtd/nand/raw/vf610_nfc.c Jean-Michel Hautbois 2024-06-20  857  
960823a226b37e drivers/mtd/nand/vf610_nfc.c     Boris Brezillon      2015-12-10  858  	mtd = nand_to_mtd(chip);
456930d80a2da1 drivers/mtd/nand/vf610_nfc.c     Stefan Agner         2015-09-02  859  
456930d80a2da1 drivers/mtd/nand/vf610_nfc.c     Stefan Agner         2015-09-02  860  	mtd->owner = THIS_MODULE;
456930d80a2da1 drivers/mtd/nand/vf610_nfc.c     Stefan Agner         2015-09-02  861  	mtd->dev.parent = nfc->dev;
8e5473c07a181c drivers/mtd/nand/raw/vf610_nfc.c Jean-Michel Hautbois 2024-06-20  862  
8e5473c07a181c drivers/mtd/nand/raw/vf610_nfc.c Jean-Michel Hautbois 2024-06-20  863  	/*
8e5473c07a181c drivers/mtd/nand/raw/vf610_nfc.c Jean-Michel Hautbois 2024-06-20  864  	 * We keep the MTD name unchanged to avoid breaking platforms
8e5473c07a181c drivers/mtd/nand/raw/vf610_nfc.c Jean-Michel Hautbois 2024-06-20  865  	 * where the MTD cmdline parser is used and the bootloader
8e5473c07a181c drivers/mtd/nand/raw/vf610_nfc.c Jean-Michel Hautbois 2024-06-20  866  	 * has not been updated to use the new naming scheme.
8e5473c07a181c drivers/mtd/nand/raw/vf610_nfc.c Jean-Michel Hautbois 2024-06-20  867  	 */
8e5473c07a181c drivers/mtd/nand/raw/vf610_nfc.c Jean-Michel Hautbois 2024-06-20  868  	if (!nfc->dev->of_node)
8e5473c07a181c drivers/mtd/nand/raw/vf610_nfc.c Jean-Michel Hautbois 2024-06-20  869  		mtd->name = "NAND";
8e5473c07a181c drivers/mtd/nand/raw/vf610_nfc.c Jean-Michel Hautbois 2024-06-20  870  	else
456930d80a2da1 drivers/mtd/nand/vf610_nfc.c     Stefan Agner         2015-09-02  871  		mtd->name = DRV_NAME;
456930d80a2da1 drivers/mtd/nand/vf610_nfc.c     Stefan Agner         2015-09-02  872  
456930d80a2da1 drivers/mtd/nand/vf610_nfc.c     Stefan Agner         2015-09-02  873  	irq = platform_get_irq(pdev, 0);
3549fecd10d24b drivers/mtd/nand/raw/vf610_nfc.c Zhu Wang             2023-08-03  874  	if (irq < 0)
3549fecd10d24b drivers/mtd/nand/raw/vf610_nfc.c Zhu Wang             2023-08-03  875  		return irq;
456930d80a2da1 drivers/mtd/nand/vf610_nfc.c     Stefan Agner         2015-09-02  876  
2d77b08eaf0b2f drivers/mtd/nand/raw/vf610_nfc.c Cai Huoqing          2021-09-01  877  	nfc->regs = devm_platform_ioremap_resource(pdev, 0);
8e5473c07a181c drivers/mtd/nand/raw/vf610_nfc.c Jean-Michel Hautbois 2024-06-20  878  	if (IS_ERR(nfc->regs)) {
8e5473c07a181c drivers/mtd/nand/raw/vf610_nfc.c Jean-Michel Hautbois 2024-06-20  879  		dev_err(nfc->dev, "Unable to map registers!\n");
456930d80a2da1 drivers/mtd/nand/vf610_nfc.c     Stefan Agner         2015-09-02  880  		return PTR_ERR(nfc->regs);
8e5473c07a181c drivers/mtd/nand/raw/vf610_nfc.c Jean-Michel Hautbois 2024-06-20  881  	}
456930d80a2da1 drivers/mtd/nand/vf610_nfc.c     Stefan Agner         2015-09-02  882  

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki

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