linux-kernel - Re: [PATCH v1 1/1] spi: Replace match_true() by device_match

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Date:   Thu, 9 Jun 2022 05:59:00 +0800
From:   kernel test robot <lkp@...el.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Mark Brown <broonie@...nel.org>, linux-spi@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     kbuild-all@...ts.01.org,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: Re: [PATCH v1 1/1] spi: Replace match_true() by device_match_any()

Hi Andy,

I love your patch! Yet something to improve:

[auto build test ERROR on broonie-spi/for-next]
[also build test ERROR on v5.19-rc1 next-20220608]
[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]

url:    https://github.com/intel-lab-lkp/linux/commits/Andy-Shevchenko/spi-Replace-match_true-by-device_match_any/20220608-091910
base:   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git for-next
config: x86_64-randconfig-a013 (https://download.01.org/0day-ci/archive/20220609/202206090531.0eWVAe0k-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.3.0-3) 11.3.0
reproduce (this is a W=1 build):
        # https://github.com/intel-lab-lkp/linux/commit/bbdbed23cc6f2f8e7c9d8da3bb6c78fe488747f1
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Andy-Shevchenko/spi-Replace-match_true-by-device_match_any/20220608-091910
        git checkout bbdbed23cc6f2f8e7c9d8da3bb6c78fe488747f1
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash

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

All errors (new ones prefixed by >>):

   drivers/spi/spi.c: In function 'slave_show':
>> drivers/spi/spi.c:2670:53: error: passing argument 3 of 'device_find_child' from incompatible pointer type [-Werror=incompatible-pointer-types]
    2670 |         child = device_find_child(&ctlr->dev, NULL, device_match_any);
         |                                                     ^~~~~~~~~~~~~~~~
         |                                                     |
         |                                                     int (*)(struct device *, const void *)
   In file included from drivers/spi/spi.c:8:
   include/linux/device.h:905:40: note: expected 'int (*)(struct device *, void *)' but argument is of type 'int (*)(struct device *, const void *)'
     905 |                                  int (*match)(struct device *dev, void *data));
         |                                  ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/spi/spi.c: In function 'slave_store':
   drivers/spi/spi.c:2689:53: error: passing argument 3 of 'device_find_child' from incompatible pointer type [-Werror=incompatible-pointer-types]
    2689 |         child = device_find_child(&ctlr->dev, NULL, device_match_any);
         |                                                     ^~~~~~~~~~~~~~~~
         |                                                     |
         |                                                     int (*)(struct device *, const void *)
   In file included from drivers/spi/spi.c:8:
   include/linux/device.h:905:40: note: expected 'int (*)(struct device *, void *)' but argument is of type 'int (*)(struct device *, const void *)'
     905 |                                  int (*match)(struct device *dev, void *data));
         |                                  ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors


vim +/device_find_child +2670 drivers/spi/spi.c

  2662	
  2663	static ssize_t slave_show(struct device *dev, struct device_attribute *attr,
  2664				  char *buf)
  2665	{
  2666		struct spi_controller *ctlr = container_of(dev, struct spi_controller,
  2667							   dev);
  2668		struct device *child;
  2669	
> 2670		child = device_find_child(&ctlr->dev, NULL, device_match_any);
  2671		return sprintf(buf, "%s\n",
  2672			       child ? to_spi_device(child)->modalias : NULL);
  2673	}
  2674	

-- 
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