[SCSI] zfcp: Simplify zfcp data structures

Reduce the size of zfcp data structures by removing unused and
redundant members. scsi_lun is only the mangled version of the
fcp_lun. So, remove the redundant field and use the fcp_lun instead.

Since the queue lock and the pci_batch indicator are only used in the
request queue, move them from the common queue struct to the adapter
struct.

Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
diff --git a/drivers/s390/scsi/zfcp_erp.c b/drivers/s390/scsi/zfcp_erp.c
index 07d22f3..174b38f 100644
--- a/drivers/s390/scsi/zfcp_erp.c
+++ b/drivers/s390/scsi/zfcp_erp.c
@@ -1186,7 +1186,7 @@
 	struct zfcp_unit *unit = p->unit;
 	struct fc_rport *rport = unit->port->rport;
 	scsi_scan_target(&rport->dev, 0, rport->scsi_target_id,
-			 unit->scsi_lun, 0);
+			 scsilun_to_int((struct scsi_lun *)&unit->fcp_lun), 0);
 	atomic_clear_mask(ZFCP_STATUS_UNIT_SCSI_WORK_PENDING, &unit->status);
 	zfcp_unit_put(unit);
 	kfree(p);