[gustavoars:testing/wfamnae-next20251110 10/18] drivers/scsi/aic94xx/aic94xx_sas.h:323:35: error: field 'ssp_cmd' has incomplete type

[gustavoars:testing/wfamnae-next20251110 10/18] drivers/scsi/aic94xx/aic94xx_sas.h:323:35: error: field 'ssp_cmd' has incomplete type

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux.git testing/wfamnae-next20251110
head:   be928bdef109364ada67e15d004067a1770a36f0
commit: fc09359f7ea98c65bfc288e3e37dda0af71652f7 [10/18] scsi: libsas/aci94xx: Avoid multiple -Wflex-array-member-not-at-end warnings
config: sparc-allmodconfig (https://download.01.org/0day-ci/archive/20251111/202511111702.50G2mceU-lkp@intel.com/config)
compiler: sparc64-linux-gcc (GCC) 15.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251111/202511111702.50G2mceU-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/202511111702.50G2mceU-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from drivers/scsi/aic94xx/aic94xx_hwi.h:19,
                    from drivers/scsi/aic94xx/aic94xx_reg.h:13,
                    from drivers/scsi/aic94xx/aic94xx_init.c:21:
>> drivers/scsi/aic94xx/aic94xx_sas.h:323:35: error: field 'ssp_cmd' has incomplete type
     323 |         struct ssp_command_iu_hdr ssp_cmd;
         |                                   ^~~~~~~


vim +/ssp_cmd +323 drivers/scsi/aic94xx/aic94xx_sas.h

   316	
   317	/* This is both ssp_task and long_ssp_task
   318	 */
   319	struct initiate_ssp_task {
   320		u8     proto_conn_rate;	  /* proto:6,4, conn_rate:3,0 */
   321		__le32 total_xfer_len;
   322		struct ssp_frame_hdr  ssp_frame;
 > 323		struct ssp_command_iu_hdr ssp_cmd;
   324		__le16 sister_scb;	  /* 0xFFFF */
   325		__le16 conn_handle;	  /* index to DDB for the intended target */
   326		u8     data_dir;	  /* :1,0 */
   327	#define DATA_DIR_NONE   0x00
   328	#define DATA_DIR_IN     0x01
   329	#define DATA_DIR_OUT    0x02
   330	#define DATA_DIR_BYRECIPIENT 0x03
   331	
   332		u8     _r_a;
   333		u8     retry_count;
   334		u8     _r_b[5];
   335		struct sg_el sg_element[3]; /* 2 real and 1 link */
   336	} __attribute__ ((packed));
   337	

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