linux-kernel - [driver-core:kobject-const 15/18] drivers/s390/cio/scm.c:49:19: error: initialization of 'int (*)(const struct device *, struct kobj_uevent_env *)' from incompatible pointer type 'int (*)(struct device *, struct kobj_uevent

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Message-ID: <202210030136.6KGC27Mw-lkp@intel.com>
Date:   Mon, 3 Oct 2022 01:23:08 +0800
From:   kernel test robot <lkp@...el.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     kbuild-all@...ts.01.org, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org
Subject: [driver-core:kobject-const 15/18] drivers/s390/cio/scm.c:49:19:
 error: initialization of 'int (*)(const struct device *, struct
 kobj_uevent_env *)' from incompatible pointer type 'int (*)(struct device *,
 struct kobj_uevent_env *)'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git kobject-const
head:   75b46b72e13aa3b904572a0a9511f14709eac779
commit: c3b2b3fa96a9536c18ab7f2663e62b1a971eab64 [15/18] driver core: make struct bus_type.uevent() take a const *
config: s390-defconfig
compiler: s390-linux-gcc (GCC) 12.1.0
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/gregkh/driver-core.git/commit/?id=c3b2b3fa96a9536c18ab7f2663e62b1a971eab64
        git remote add driver-core https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git
        git fetch --no-tags driver-core kobject-const
        git checkout c3b2b3fa96a9536c18ab7f2663e62b1a971eab64
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=s390 SHELL=/bin/bash drivers/s390/

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/s390/cio/scm.c:49:19: error: initialization of 'int (*)(const struct device *, struct kobj_uevent_env *)' from incompatible pointer type 'int (*)(struct device *, struct kobj_uevent_env *)' [-Werror=incompatible-pointer-types]
      49 |         .uevent = scmdev_uevent,
         |                   ^~~~~~~~~~~~~
   drivers/s390/cio/scm.c:49:19: note: (near initialization for 'scm_bus_type.uevent')
   cc1: some warnings being treated as errors
--
>> drivers/s390/crypto/ap_bus.c:1575:19: error: initialization of 'int (*)(const struct device *, struct kobj_uevent_env *)' from incompatible pointer type 'int (*)(struct device *, struct kobj_uevent_env *)' [-Werror=incompatible-pointer-types]
    1575 |         .uevent = &ap_uevent,
         |                   ^
   drivers/s390/crypto/ap_bus.c:1575:19: note: (near initialization for 'ap_bus_type.uevent')
   cc1: some warnings being treated as errors


vim +49 drivers/s390/cio/scm.c

1d1c8f78bed5f8 Sebastian Ott 2012-08-28  44  
1d1c8f78bed5f8 Sebastian Ott 2012-08-28  45  static struct bus_type scm_bus_type = {
1d1c8f78bed5f8 Sebastian Ott 2012-08-28  46  	.name  = "scm",
1d1c8f78bed5f8 Sebastian Ott 2012-08-28  47  	.probe = scmdev_probe,
1d1c8f78bed5f8 Sebastian Ott 2012-08-28  48  	.remove = scmdev_remove,
1d1c8f78bed5f8 Sebastian Ott 2012-08-28 @49  	.uevent = scmdev_uevent,
1d1c8f78bed5f8 Sebastian Ott 2012-08-28  50  };
1d1c8f78bed5f8 Sebastian Ott 2012-08-28  51  

:::::: The code at line 49 was first introduced by commit
:::::: 1d1c8f78bed5f8e769757525bd9c2dec69f11a44 s390: add scm bus driver

:::::: TO: Sebastian Ott <sebott@...ux.vnet.ibm.com>
:::::: CC: Martin Schwidefsky <schwidefsky@...ibm.com>

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp

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