linux-kernel - [broonie-misc:at91sam9g20ek 10/12] sound/soc/codecs/wm8731-spi.c:28:48: error: invalid application of 'sizeof' to incomplete type 'struct wm8731

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Date:   Fri, 25 Mar 2022 13:50:57 +0800
From:   kernel test robot <lkp@...el.com>
To:     Mark Brown <broonie@...nel.org>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: [broonie-misc:at91sam9g20ek 10/12]
 sound/soc/codecs/wm8731-spi.c:28:48: error: invalid application of 'sizeof'
 to incomplete type 'struct wm8731_priv'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/misc.git at91sam9g20ek
head:   3924683a22e84ba06478ea4aaa775319ba02f42c
commit: 5b7214a7b726cbf25aaebfc8a05ede8c53d04d26 [10/12] ASoC: wm8731: Factor out the I2C and SPI bus code into separate modules
config: powerpc-allmodconfig (https://download.01.org/0day-ci/archive/20220325/202203251303.ROlxE3s7-lkp@intel.com/config)
compiler: powerpc-linux-gcc (GCC) 11.2.0
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://git.kernel.org/pub/scm/linux/kernel/git/broonie/misc.git/commit/?id=5b7214a7b726cbf25aaebfc8a05ede8c53d04d26
        git remote add broonie-misc https://git.kernel.org/pub/scm/linux/kernel/git/broonie/misc.git
        git fetch --no-tags broonie-misc at91sam9g20ek
        git checkout 5b7214a7b726cbf25aaebfc8a05ede8c53d04d26
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=powerpc SHELL=/bin/bash sound/soc/codecs/

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

All errors (new ones prefixed by >>):

   sound/soc/codecs/wm8731-spi.c: In function 'wm8731_spi_probe':
>> sound/soc/codecs/wm8731-spi.c:28:48: error: invalid application of 'sizeof' to incomplete type 'struct wm8731_priv'
      28 |         wm8731 = devm_kzalloc(&spi->dev, sizeof(*wm8731), GFP_KERNEL);
         |                                                ^
>> sound/soc/codecs/wm8731-spi.c:34:15: error: invalid use of undefined type 'struct wm8731_priv'
      34 |         wm8731->regmap = devm_regmap_init_spi(spi, &wm8731_regmap);
         |               ^~
>> sound/soc/codecs/wm8731-spi.c:34:26: error: implicit declaration of function 'devm_regmap_init_spi' [-Werror=implicit-function-declaration]
      34 |         wm8731->regmap = devm_regmap_init_spi(spi, &wm8731_regmap);
         |                          ^~~~~~~~~~~~~~~~~~~~
>> sound/soc/codecs/wm8731-spi.c:34:53: error: 'wm8731_regmap' undeclared (first use in this function)
      34 |         wm8731->regmap = devm_regmap_init_spi(spi, &wm8731_regmap);
         |                                                     ^~~~~~~~~~~~~
   sound/soc/codecs/wm8731-spi.c:34:53: note: each undeclared identifier is reported only once for each function it appears in
   sound/soc/codecs/wm8731-spi.c:35:26: error: invalid use of undefined type 'struct wm8731_priv'
      35 |         if (IS_ERR(wm8731->regmap)) {
         |                          ^~
   sound/soc/codecs/wm8731-spi.c:36:37: error: invalid use of undefined type 'struct wm8731_priv'
      36 |                 ret = PTR_ERR(wm8731->regmap);
         |                                     ^~
>> sound/soc/codecs/wm8731-spi.c:42:16: error: implicit declaration of function 'wm8731_init' [-Werror=implicit-function-declaration]
      42 |         return wm8731_init(&spi->dev, wm8731);
         |                ^~~~~~~~~~~
   cc1: some warnings being treated as errors


vim +28 sound/soc/codecs/wm8731-spi.c

    22	
    23	static int wm8731_spi_probe(struct spi_device *spi)
    24	{
    25		struct wm8731_priv *wm8731;
    26		int ret;
    27	
  > 28		wm8731 = devm_kzalloc(&spi->dev, sizeof(*wm8731), GFP_KERNEL);
    29		if (wm8731 == NULL)
    30			return -ENOMEM;
    31	
    32		spi_set_drvdata(spi, wm8731);
    33	
  > 34		wm8731->regmap = devm_regmap_init_spi(spi, &wm8731_regmap);
    35		if (IS_ERR(wm8731->regmap)) {
    36			ret = PTR_ERR(wm8731->regmap);
    37			dev_err(&spi->dev, "Failed to allocate register map: %d\n",
    38				ret);
    39			return ret;
    40		}
    41	
  > 42		return wm8731_init(&spi->dev, wm8731);
    43	}
    44	

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