[driver-core:kobject-const 18/18] drivers/base/bus.c:59:18: warning: variable 'bus' is uninitialized when used here

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git kobject-const
head:   f9956a1c00eef96ea3fdf5395852e4ff902f3a76
commit: f9956a1c00eef96ea3fdf5395852e4ff902f3a76 [18/18] bus: step 1
config: hexagon-randconfig-r045-20230108
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 8d9828ef5aa9688500657d36cd2aefbe12bbd162)
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=f9956a1c00eef96ea3fdf5395852e4ff902f3a76
        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 f9956a1c00eef96ea3fdf5395852e4ff902f3a76
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash drivers/base/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <[email protected]>

All warnings (new ones prefixed by >>):

>> drivers/base/bus.c:59:18: warning: variable 'bus' is uninitialized when used here [-Wuninitialized]
                   if (sp->bus == bus)
                                  ^~~
   drivers/base/bus.c:47:22: note: initialize the variable 'bus' to silence this warning
           struct bus_type *bus;
                               ^
                                = NULL
   1 warning generated.


vim +/bus +59 drivers/base/bus.c

    44	
    45	static struct subsys_private *bus_to_subsys(const struct bus_type *b)
    46	{
    47		struct bus_type *bus;
    48		struct subsys_private *sp = NULL;
    49	
    50		if (!b)
    51			return NULL;
    52	
    53		mutex_lock(&subsys_list_lock);
    54	
    55		if (list_empty(&subsys_list))
    56			goto done;
    57	
    58		list_for_each_entry(sp, &subsys_list, bus_list_node) {
  > 59			if (sp->bus == bus)
    60				goto done;
    61		}
    62		sp = NULL;
    63	done:
    64		mutex_unlock(&subsys_list_lock);
    65		return sp;
    66	}
    67	

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

_______________________________________________
devel mailing list
[email protected]
http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel