[openeuler:OLK-6.6 3534/3534] block/blk-ioinf.c:530:60: error: array has incomplete element type 'const struct blk_mq_debugfs_attr'

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

tree:   https://gitee.com/openeuler/kernel.git OLK-6.6
head:   d281438782e3c28a3df71a64513a3312d43dcf01
commit: 4192ef0b07762c6dabf617654df442fecffe8510 [3534/3534] blk-ioinf: add rqos/inflight/stat debufs interface
config: x86_64-randconfig-r071-20251211 (https://download.01.org/0day-ci/archive/20251211/202512111132.APojgRTS-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/20251211/202512111132.APojgRTS-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/202512111132.APojgRTS-lkp@intel.com/

All errors (new ones prefixed by >>):

   block/blk-ioinf.c:248:6: warning: no previous prototype for function 'ioinf_done' [-Wmissing-prototypes]
     248 | void ioinf_done(struct ioinf *inf, struct ioinf_rq_wait *rqw)
         |      ^
   block/blk-ioinf.c:248:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
     248 | void ioinf_done(struct ioinf *inf, struct ioinf_rq_wait *rqw)
         | ^
         | static 
>> block/blk-ioinf.c:530:60: error: array has incomplete element type 'const struct blk_mq_debugfs_attr'
     530 | static const struct blk_mq_debugfs_attr ioinf_debugfs_attrs[] = {
         |                                                            ^
   block/blk-rq-qos.h:14:8: note: forward declaration of 'struct blk_mq_debugfs_attr'
      14 | struct blk_mq_debugfs_attr;
         |        ^
   block/blk-ioinf.c:547:5: warning: no previous prototype for function 'ioinf_calc_budget' [-Wmissing-prototypes]
     547 | u32 ioinf_calc_budget(struct ioinf_rq_wait *rqw)
         |     ^
   block/blk-ioinf.c:547:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
     547 | u32 ioinf_calc_budget(struct ioinf_rq_wait *rqw)
         | ^
         | static 
   2 warnings and 1 error generated.


vim +530 block/blk-ioinf.c

   529	
 > 530	static const struct blk_mq_debugfs_attr ioinf_debugfs_attrs[] = {
   531		{"stat", 0400, ioinf_stat_show},
   532		{},
   533	};
   534	

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