[openeuler:openEuler-1.0-LTS 1753/1753] block/genhd.c:642:5: warning: no previous prototype for function 'disk_scan_partitions'

[openeuler:openEuler-1.0-LTS 1753/1753] block/genhd.c:642:5: warning: no previous prototype for function 'disk_scan_partitions'

[kernel test robot]

Hi Yu,

FYI, the error/warning still remains.

tree:   https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS
head:   464c0bf980f96a307759f809825ab0a3b59f8b70
commit: cdfb5c11ad89867cd28c903369fbfebe3f36ca26 [1753/1753] block: fix kabi broken in ioctl.c
config: x86_64-buildonly-randconfig-006-20250806 (https://download.01.org/0day-ci/archive/20250807/202508070349.2ODYAkPf-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250807/202508070349.2ODYAkPf-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202508070349.2ODYAkPf-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> block/genhd.c:642:5: warning: no previous prototype for function 'disk_scan_partitions' [-Wmissing-prototypes]
     642 | int disk_scan_partitions(struct gendisk *disk, fmode_t mode)
         |     ^
   block/genhd.c:642:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
     642 | int disk_scan_partitions(struct gendisk *disk, fmode_t mode)
         | ^
         | static 
   1 warning generated.
   block/genhd.c:533: warning: Function parameter or member 'devt' not described in 'blk_invalidate_devt'


vim +/disk_scan_partitions +642 block/genhd.c

d2bf1b6723ed0e Tejun Heo         2010-12-08  641  
efc73feb2901d2 Christoph Hellwig 2023-04-07 @642  int disk_scan_partitions(struct gendisk *disk, fmode_t mode)
b9484a857f600c Yu Kuai           2022-08-09  643  {
b9484a857f600c Yu Kuai           2022-08-09  644  	struct block_device *bdev;
efc73feb2901d2 Christoph Hellwig 2023-04-07  645  	int ret;
b9484a857f600c Yu Kuai           2022-08-09  646  
efc73feb2901d2 Christoph Hellwig 2023-04-07  647  	if (!disk_part_scan_enabled(disk))
efc73feb2901d2 Christoph Hellwig 2023-04-07  648  		return -EINVAL;
b9484a857f600c Yu Kuai           2022-08-09  649  
b9484a857f600c Yu Kuai           2022-08-09  650  	bdev = bdget_disk(disk, 0);
b9484a857f600c Yu Kuai           2022-08-09  651  	if (!bdev)
efc73feb2901d2 Christoph Hellwig 2023-04-07  652  		return -ENOMEM;
b9484a857f600c Yu Kuai           2022-08-09  653  
b9484a857f600c Yu Kuai           2022-08-09  654  	bdev->bd_invalidated = 1;
efc73feb2901d2 Christoph Hellwig 2023-04-07  655  
efc73feb2901d2 Christoph Hellwig 2023-04-07  656  	ret = blkdev_get(bdev, mode, NULL);
efc73feb2901d2 Christoph Hellwig 2023-04-07  657  	if (!ret)
efc73feb2901d2 Christoph Hellwig 2023-04-07  658  		blkdev_put(bdev, mode);
efc73feb2901d2 Christoph Hellwig 2023-04-07  659  
efc73feb2901d2 Christoph Hellwig 2023-04-07  660  	return ret;
fbbec472351c99 Christoph Hellwig 2023-04-07  661  }
fbbec472351c99 Christoph Hellwig 2023-04-07  662  

:::::: The code at line 642 was first introduced by commit
:::::: efc73feb2901d27dcd01fa859d1378aee42850aa block: merge disk_scan_partitions and blkdev_reread_part

:::::: TO: Christoph Hellwig <hch@lst.de>
:::::: CC: Yongqiang Liu <duanzi@zju.edu.cn>

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki