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Date:   Sun, 5 Jul 2020 10:22:23 +0800
From:   kernel test robot <>
To:     Miquel Raynal <>
Subject: drivers/mtd/nand/raw/xway_nand.c:227:30: error: 'mtd' undeclared

Hi Miquel,

FYI, the error/warning still remains.

tree: master
head:   35e884f89df4c48566d745dc5a97a0d058d04263
commit: 9fdd78f7bcda3e6a9f53c355529b3bf037c0e24f mtd: rawnand: xway: Stop using nand_release()
date:   5 weeks ago
config: mips-xway_defconfig (attached as .config)
compiler: mips-linux-gcc (GCC) 9.3.0
reproduce (this is a W=1 build):
        wget -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout 9fdd78f7bcda3e6a9f53c355529b3bf037c0e24f
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=mips 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <>

All errors (new ones prefixed by >>):

   drivers/mtd/nand/raw/xway_nand.c: In function 'xway_nand_remove':
>> drivers/mtd/nand/raw/xway_nand.c:227:30: error: 'mtd' undeclared (first use in this function)
     227 |  ret = mtd_device_unregister(mtd);
         |                              ^~~
   drivers/mtd/nand/raw/xway_nand.c:227:30: note: each undeclared identifier is reported only once for each function it appears in

vim +/mtd +227 drivers/mtd/nand/raw/xway_nand.c

   218	/*
   219	 * Remove a NAND device.
   220	 */
   221	static int xway_nand_remove(struct platform_device *pdev)
   222	{
   223		struct xway_nand_data *data = platform_get_drvdata(pdev);
   224		struct nand_chip *chip = &data->chip;
   225		int ret;
 > 227		ret = mtd_device_unregister(mtd);
   228		WARN_ON(ret);
   229		nand_cleanup(chip);
   231		return 0;
   232	}

0-DAY CI Kernel Test Service, Intel Corporation

Download attachment ".config.gz" of type "application/gzip" (18253 bytes)

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