[kkdwivedi:fermata 24/25] kernel/bpf/helpers.c:2417:18: sparse: sparse: symbol 'bpf_coro_suspend' was not declared. Should it be static?

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

tree:   https://github.com/kkdwivedi/linux fermata
head:   0de8fbf4ea7faa920d77adc60e4388798226d425
commit: ad66b0bda534ef2d0d681a5675c32fc8e5ec140e [24/25] bpf: Add no-op bpf_coro_suspend() kfunc
config: openrisc-randconfig-r122-20260908 (https://download.01.org/0day-ci/archive/20260908/202609081543.8TDIBK0I-lkp@intel.com/config)
compiler: or1k-linux-gcc (GCC) 11.5.0
sparse: v0.6.5-rc1
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260908/202609081543.8TDIBK0I-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/202609081543.8TDIBK0I-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
   kernel/bpf/helpers.c:1228:21: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected unsigned long long ( *[usertype] callback_fn )( ... ) @@     got void [noderef] __rcu * @@
   kernel/bpf/helpers.c:1228:21: sparse:     expected unsigned long long ( *[usertype] callback_fn )( ... )
   kernel/bpf/helpers.c:1228:21: sparse:     got void [noderef] __rcu *
>> kernel/bpf/helpers.c:2417:18: sparse: sparse: symbol 'bpf_coro_suspend' was not declared. Should it be static?
   kernel/bpf/helpers.c:2874:18: sparse: sparse: symbol 'bpf_task_release_dtor' was not declared. Should it be static?

vim +/bpf_coro_suspend +2417 kernel/bpf/helpers.c

  2416	
> 2417	__bpf_kfunc void bpf_coro_suspend(void *p__ign)
  2418	{
  2419	}
  2420	

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