scsi: remove tsk_mgmt_response and it_nexus_response transport methods

They are never called and just dispatch to methods of the same names in
the FC and SRP transport classes that are never implemented.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/scsi_transport_fc.c

@@ -2160,19 +2160,6 @@ fc_user_scan(struct Scsi_Host *shost, uint channel, uint id, u64 lun)
 	return 0;
 }
 
-static int fc_tsk_mgmt_response(struct Scsi_Host *shost, u64 nexus, u64 tm_id,
-				int result)
-{
-	struct fc_internal *i = to_fc_internal(shost->transportt);
-	return i->f->tsk_mgmt_response(shost, nexus, tm_id, result);
-}
-
-static int fc_it_nexus_response(struct Scsi_Host *shost, u64 nexus, int result)
-{
-	struct fc_internal *i = to_fc_internal(shost->transportt);
-	return i->f->it_nexus_response(shost, nexus, result);
-}
-
 struct scsi_transport_template *
 fc_attach_transport(struct fc_function_template *ft)
 {
@@ -2214,10 +2201,6 @@ fc_attach_transport(struct fc_function_template *ft)
 
 	i->t.user_scan = fc_user_scan;
 
-	/* target-mode drivers' functions */
-	i->t.tsk_mgmt_response = fc_tsk_mgmt_response;
-	i->t.it_nexus_response = fc_it_nexus_response;
-
 	/*
 	 * Setup SCSI Target Attributes.
 	 */

drivers/scsi/scsi_transport_srp.c

@@ -794,19 +794,6 @@ void srp_stop_rport_timers(struct srp_rport *rport)
 }
 EXPORT_SYMBOL_GPL(srp_stop_rport_timers);
 
-static int srp_tsk_mgmt_response(struct Scsi_Host *shost, u64 nexus, u64 tm_id,
-				 int result)
-{
-	struct srp_internal *i = to_srp_internal(shost->transportt);
-	return i->f->tsk_mgmt_response(shost, nexus, tm_id, result);
-}
-
-static int srp_it_nexus_response(struct Scsi_Host *shost, u64 nexus, int result)
-{
-	struct srp_internal *i = to_srp_internal(shost->transportt);
-	return i->f->it_nexus_response(shost, nexus, result);
-}
-
 /**
  * srp_attach_transport  -  instantiate SRP transport template
  * @ft:		SRP transport class function template
@@ -821,9 +808,6 @@ srp_attach_transport(struct srp_function_template *ft)
 	if (!i)
 		return NULL;
 
-	i->t.tsk_mgmt_response = srp_tsk_mgmt_response;
-	i->t.it_nexus_response = srp_it_nexus_response;
-
 	i->t.host_size = sizeof(struct srp_host_attrs);
 	i->t.host_attrs.ac.attrs = &i->host_attrs[0];
 	i->t.host_attrs.ac.class = &srp_host_class.class;

include/scsi/scsi_transport.h

@@ -56,18 +56,6 @@ struct scsi_transport_template {
 	 * Allows a transport to override the default error handler.
 	 */
 	void (* eh_strategy_handler)(struct Scsi_Host *);
-
-	/*
-	 * Used as callback for the completion of i_t_nexus request
-	 * for target drivers.
-	 */
-	int (* it_nexus_response)(struct Scsi_Host *, u64, int);
-
-	/*
-	 * Used as callback for the completion of task management
-	 * request for target drivers.
-	 */
-	int (* tsk_mgmt_response)(struct Scsi_Host *, u64, u64, int);
 };
 
 #define transport_class_to_shost(tc) \

include/scsi/scsi_transport_srp.h

@@ -88,10 +88,6 @@ struct srp_rport {
  * @terminate_rport_io: Callback function for terminating all outstanding I/O
  *     requests for an rport.
  * @rport_delete: Callback function that deletes an rport.
- *
- * Fields that are only relevant for SRP target drivers:
- * @tsk_mgmt_response: Callback function for sending a task management response.
- * @it_nexus_response: Callback function for processing an IT nexus response.
  */
 struct srp_function_template {
 	/* for initiator drivers */
@@ -103,9 +99,6 @@ struct srp_function_template {
 	int (*reconnect)(struct srp_rport *rport);
 	void (*terminate_rport_io)(struct srp_rport *rport);
 	void (*rport_delete)(struct srp_rport *rport);
-	/* for target drivers */
-	int (* tsk_mgmt_response)(struct Scsi_Host *, u64, u64, int);
-	int (* it_nexus_response)(struct Scsi_Host *, u64, int);
 };
 
 extern struct scsi_transport_template *