[tj-wq:for-7.1-fixes 1/1] kernel/workqueue.c:5916:53: warning: diagnostic behavior may be improved by adding the 'format(printf, 1, 0)' attribute to the declaration of 'alloc_workqueue_va'

[tj-wq:for-7.1-fixes 1/1] kernel/workqueue.c:5916:53: warning: diagnostic behavior may be improved by adding the 'format(printf, 1, 0)' attribute to the declaration of 'alloc_workqueue_va'

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/tj/wq.git for-7.1-fixes
head:   0de4cb473aed57ee4ba7e0551ad27bddc19fc519
commit: 0de4cb473aed57ee4ba7e0551ad27bddc19fc519 [1/1] workqueue: fix devm_alloc_workqueue() va_list misuse
config: arm-allnoconfig (https://download.01.org/0day-ci/archive/20260430/202604300347.2LgXyteh-lkp@intel.com/config)
compiler: clang version 23.0.0git (https://github.com/llvm/llvm-project 5bac06718f502014fade905512f1d26d578a18f3)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260430/202604300347.2LgXyteh-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/202604300347.2LgXyteh-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> kernel/workqueue.c:5916:53: warning: diagnostic behavior may be improved by adding the 'format(printf, 1, 0)' attribute to the declaration of 'alloc_workqueue_va' [-Wmissing-format-attribute]
    5909 | static struct workqueue_struct *alloc_workqueue_va(const char *fmt,
         | __attribute__((format(printf, 1, 0))) 
    5910 |                                                    unsigned int flags,
    5911 |                                                    int max_active,
    5912 |                                                    va_list args)
    5913 | {
    5914 |         struct workqueue_struct *wq;
    5915 | 
    5916 |         wq = __alloc_workqueue(fmt, flags, max_active, args);
         |                                                            ^
   kernel/workqueue.c:5909:33: note: 'alloc_workqueue_va' declared here
    5909 | static struct workqueue_struct *alloc_workqueue_va(const char *fmt,
         |                                 ^
   1 warning generated.


vim +5916 kernel/workqueue.c

  5908	
  5909	static struct workqueue_struct *alloc_workqueue_va(const char *fmt,
  5910							   unsigned int flags,
  5911							   int max_active,
  5912							   va_list args)
  5913	{
  5914		struct workqueue_struct *wq;
  5915	
> 5916		wq = __alloc_workqueue(fmt, flags, max_active, args);
  5917		if (wq)
  5918			wq_init_lockdep(wq);
  5919	
  5920		return wq;
  5921	}
  5922	

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