linux-kernel - [driver-core:kobject-const 7/8] drivers/dma-buf/dma-buf-sysfs-stats.c:141:19: error: initialization of 'int (*)(const struct kobject *)' from incompatible pointer type 'int (*)(struct kobject *)'

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Date:   Thu, 29 Sep 2022 04:07:04 +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 7/8]
 drivers/dma-buf/dma-buf-sysfs-stats.c:141:19: error: initialization of 'int
 (*)(const struct kobject *)' from incompatible pointer type 'int (*)(struct
 kobject *)'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git kobject-const
head:   58626cfaf471a3c20f2b07ad8132742d9b112927
commit: 0cc7120368ac00bbe2eb66ec2fd13d216bae770d [7/8] kobject: kset_uevent_ops: make fiter() callback take a const *
config: s390-allmodconfig
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=0cc7120368ac00bbe2eb66ec2fd13d216bae770d
        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 0cc7120368ac00bbe2eb66ec2fd13d216bae770d
        # 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/

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/dma-buf/dma-buf-sysfs-stats.c:141:19: error: initialization of 'int (*)(const struct kobject *)' from incompatible pointer type 'int (*)(struct kobject *)' [-Werror=incompatible-pointer-types]
     141 |         .filter = dmabuf_sysfs_uevent_filter,
         |                   ^~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/dma-buf/dma-buf-sysfs-stats.c:141:19: note: (near initialization for 'dmabuf_sysfs_no_uevent_ops.filter')
   cc1: some warnings being treated as errors


vim +141 drivers/dma-buf/dma-buf-sysfs-stats.c

bdb8d06dfefd66 Hridya Valsaraju 2021-06-03  139  
bdb8d06dfefd66 Hridya Valsaraju 2021-06-03  140  static const struct kset_uevent_ops dmabuf_sysfs_no_uevent_ops = {
bdb8d06dfefd66 Hridya Valsaraju 2021-06-03 @141  	.filter = dmabuf_sysfs_uevent_filter,
bdb8d06dfefd66 Hridya Valsaraju 2021-06-03  142  };
bdb8d06dfefd66 Hridya Valsaraju 2021-06-03  143  

:::::: The code at line 141 was first introduced by commit
:::::: bdb8d06dfefd666d5981d884b535b04105869fcc dmabuf: Add the capability to expose DMA-BUF stats in sysfs

:::::: TO: Hridya Valsaraju <hridya@...gle.com>
:::::: CC: Daniel Vetter <daniel.vetter@...ll.ch>

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

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