scsi: zfcp: silence remaining kdoc warnings in header files

Improve whatever the following simple invocation reported:
$ ./scripts/kernel-doc -none drivers/s390/scsi/*.h

While at it, improve some related kdoc,
including struct zfcp_fsf_ct_els in zfcp_fsf.h.
Signed-off-by: Steffen Maier <maier@linux.ibm.com>
Reviewed-by: Benjamin Block <bblock@linux.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/s390/scsi/zfcp_dbf.h

@@ -42,7 +42,8 @@ struct zfcp_dbf_rec_trigger {
  * @fsf_req_id: request id for fsf requests
  * @rec_status: status of the fsf request
  * @rec_step: current step of the recovery action
- * rec_count: recovery counter
+ * @rec_action: ERP action type
+ * @rec_count: recoveries including retries for particular @rec_action
  */
 struct zfcp_dbf_rec_running {
 	u64 fsf_req_id;
@@ -72,6 +73,7 @@ enum zfcp_dbf_rec_id {
  * @adapter_status: current status of the adapter
  * @port_status: current status of the port
  * @lun_status: current status of the lun
+ * @u: record type specific data
  * @u.trig: structure zfcp_dbf_rec_trigger
  * @u.run: structure zfcp_dbf_rec_running
  */
@@ -126,6 +128,8 @@ struct zfcp_dbf_san {
  * @prot_status_qual: protocol status qualifier
  * @fsf_status: fsf status
  * @fsf_status_qual: fsf status qualifier
+ * @port_handle: handle for port
+ * @lun_handle: handle for LUN
  */
 struct zfcp_dbf_hba_res {
 	u64 req_issued;
@@ -158,6 +162,7 @@ struct zfcp_dbf_hba_uss {
  * @ZFCP_DBF_HBA_RES: response trace record
  * @ZFCP_DBF_HBA_USS: unsolicited status trace record
  * @ZFCP_DBF_HBA_BIT: bit error trace record
+ * @ZFCP_DBF_HBA_BASIC: basic adapter event, only trace tag, no other data
  */
 enum zfcp_dbf_hba_id {
 	ZFCP_DBF_HBA_RES	= 1,
@@ -176,6 +181,9 @@ enum zfcp_dbf_hba_id {
  * @fsf_seq_no: fsf sequence number
  * @pl_len: length of payload stored as zfcp_dbf_pay
  * @u: record type specific data
+ * @u.res: data for fsf responses
+ * @u.uss: data for unsolicited status buffer
+ * @u.be:  data for bit error unsolicited status buffer
  */
 struct zfcp_dbf_hba {
 	u8 id;

drivers/s390/scsi/zfcp_fc.h

@@ -121,9 +121,24 @@ struct zfcp_fc_rspn_req {
 /**
  * struct zfcp_fc_req - Container for FC ELS and CT requests sent from zfcp
  * @ct_els: data required for issuing fsf command
- * @sg_req: scatterlist entry for request data
- * @sg_rsp: scatterlist entry for response data
- * @u: request specific data
+ * @sg_req: scatterlist entry for request data, refers to embedded @u submember
+ * @sg_rsp: scatterlist entry for response data, refers to embedded @u submember
+ * @u: request and response specific data
+ * @u.adisc: ADISC specific data
+ * @u.adisc.req: ADISC request
+ * @u.adisc.rsp: ADISC response
+ * @u.gid_pn: GID_PN specific data
+ * @u.gid_pn.req: GID_PN request
+ * @u.gid_pn.rsp: GID_PN response
+ * @u.gpn_ft: GPN_FT specific data
+ * @u.gpn_ft.sg_rsp2: GPN_FT response, not embedded here, allocated elsewhere
+ * @u.gpn_ft.req: GPN_FT request
+ * @u.gspn: GSPN specific data
+ * @u.gspn.req: GSPN request
+ * @u.gspn.rsp: GSPN response
+ * @u.rspn: RSPN specific data
+ * @u.rspn.req: RSPN request
+ * @u.rspn.rsp: RSPN response
  */
 struct zfcp_fc_req {
 	struct zfcp_fsf_ct_els				ct_els;

drivers/s390/scsi/zfcp_fsf.h

@@ -438,8 +438,8 @@ struct zfcp_blk_drv_data {
 
 /**
  * struct zfcp_fsf_ct_els - zfcp data for ct or els request
- * @req: scatter-gather list for request
- * @resp: scatter-gather list for response
+ * @req: scatter-gather list for request, points to &zfcp_fc_req.sg_req or BSG
+ * @resp: scatter-gather list for response, points to &zfcp_fc_req.sg_rsp or BSG
  * @handler: handler function (called for response to the request)
  * @handler_data: data passed to handler function
  * @port: Optional pointer to port for zfcp internal ELS (only test link ADISC)

drivers/s390/scsi/zfcp_qdio.h

@@ -30,6 +30,8 @@
  * @req_q_full: queue full incidents
  * @req_q_wq: used to wait for SBAL availability
  * @adapter: adapter used in conjunction with this qdio structure
+ * @max_sbale_per_sbal: qdio limit per sbal
+ * @max_sbale_per_req: qdio limit per request
  */
 struct zfcp_qdio {
 	struct qdio_buffer	*res_q[QDIO_MAX_BUFFERS_PER_Q];
@@ -70,7 +72,7 @@ struct zfcp_qdio_req {
 /**
  * zfcp_qdio_sbale_req - return pointer to sbale on req_q for a request
  * @qdio: pointer to struct zfcp_qdio
- * @q_rec: pointer to struct zfcp_qdio_req
+ * @q_req: pointer to struct zfcp_qdio_req
  * Returns: pointer to qdio_buffer_element (sbale) structure
  */
 static inline struct qdio_buffer_element *
@@ -82,7 +84,7 @@ zfcp_qdio_sbale_req(struct zfcp_qdio *qdio, struct zfcp_qdio_req *q_req)
 /**
  * zfcp_qdio_sbale_curr - return current sbale on req_q for a request
  * @qdio: pointer to struct zfcp_qdio
- * @fsf_req: pointer to struct zfcp_fsf_req
+ * @q_req: pointer to struct zfcp_qdio_req
  * Returns: pointer to qdio_buffer_element (sbale) structure
  */
 static inline struct qdio_buffer_element *
@@ -135,6 +137,8 @@ void zfcp_qdio_req_init(struct zfcp_qdio *qdio, struct zfcp_qdio_req *q_req,
  * zfcp_qdio_fill_next - Fill next sbale, only for single sbal requests
  * @qdio: pointer to struct zfcp_qdio
  * @q_req: pointer to struct zfcp_queue_req
+ * @data: pointer to data
+ * @len: length of data
  *
  * This is only required for single sbal requests, calling it when
  * wrapping around to the next sbal is a bug.
@@ -182,6 +186,7 @@ int zfcp_qdio_sg_one_sbale(struct scatterlist *sg)
 
 /**
  * zfcp_qdio_skip_to_last_sbale - skip to last sbale in sbal
+ * @qdio: pointer to struct zfcp_qdio
  * @q_req: The current zfcp_qdio_req
  */
 static inline

drivers/s390/scsi/zfcp_reqlist.h

@@ -17,7 +17,7 @@
 /**
  * struct zfcp_reqlist - Container for request list (reqlist)
  * @lock: Spinlock for protecting the hash list
- * @list: Array of hashbuckets, each is a list of requests in this bucket
+ * @buckets: Array of hashbuckets, each is a list of requests in this bucket
  */
 struct zfcp_reqlist {
 	spinlock_t lock;