[jimc:dd-next-2 29/31] lib/dynamic_debug.c:1304:24: sparse: sparse: Using plain integer as NULL pointer

[kernel test robot <lkp@intel.com>]

tree:   https://github.com/jimc/linux.git dd-next-2
head:   a91aa8738cf704e0a0b3137f93bfd3b9bcef20c0
commit: 85feb71d39a764c22e8ef05b1a81b1957736e3ad [29/31] dyndbg: resolve "protection" of class'd pr_debug
config: alpha-randconfig-r133-20251231 (https://download.01.org/0day-ci/archive/20260101/202601010356.s9OlXwlF-lkp@intel.com/config)
compiler: alpha-linux-gcc (GCC) 8.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260101/202601010356.s9OlXwlF-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/202601010356.s9OlXwlF-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> lib/dynamic_debug.c:1304:24: sparse: sparse: Using plain integer as NULL pointer

vim +1304 lib/dynamic_debug.c

  1296	
  1297	static struct _ddebug_class_param *
  1298	ddebug_get_classmap_kparam(const struct kernel_param *kp,
  1299				   const struct _ddebug_class_map *map)
  1300	{
  1301		struct _ddebug_class_param *dcp;
  1302	
  1303		if (kp->ops != &param_ops_dyndbg_classes)
> 1304			return false;
  1305	
  1306		dcp = (struct _ddebug_class_param *)kp->arg;
  1307	
  1308		return (map == dcp->map)
  1309			? dcp : (struct _ddebug_class_param *)NULL;
  1310	}
  1311	

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