[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>

1 files changed, 6 insertions, 4 deletions

diff --git a/drivers/s390/scsi/zfcp_ccw.c b/drivers/s390/scsi/zfcp_ccw.c
index 3a9bd5451a49..b04038c74786 100644
--- a/drivers/s390/scsi/zfcp_ccw.c
+++ b/drivers/s390/scsi/zfcp_ccw.c
@@ -47,6 +47,8 @@ static void zfcp_ccw_remove(struct ccw_device *ccw_device)
         struct zfcp_adapter *adapter;
         struct zfcp_port *port, *p;
         struct zfcp_unit *unit, *u;
+        LIST_HEAD(unit_remove_lh);
+        LIST_HEAD(port_remove_lh);
 
         ccw_device_set_offline(ccw_device);
         down(&zfcp_data.config_sema);
@@ -55,18 +57,18 @@ static void zfcp_ccw_remove(struct ccw_device *ccw_device)
         write_lock_irq(&zfcp_data.config_lock);
         list_for_each_entry_safe(port, p, &adapter->port_list_head, list) {
                 list_for_each_entry_safe(unit, u, &port->unit_list_head, list) {
-                        list_move(&unit->list, &port->unit_remove_lh);
+                        list_move(&unit->list, &unit_remove_lh);
                         atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE,
                                         &unit->status);
                 }
-                list_move(&port->list, &adapter->port_remove_lh);
+                list_move(&port->list, &port_remove_lh);
                 atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE, &port->status);
         }
         atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE, &adapter->status);
         write_unlock_irq(&zfcp_data.config_lock);
 
-        list_for_each_entry_safe(port, p, &adapter->port_remove_lh, list) {
-                list_for_each_entry_safe(unit, u, &port->unit_remove_lh, list) {
+        list_for_each_entry_safe(port, p, &port_remove_lh, list) {
+                list_for_each_entry_safe(unit, u, &unit_remove_lh, list) {
                         if (atomic_read(&unit->status) &
                             ZFCP_STATUS_UNIT_REGISTERED)
                                 scsi_remove_device(unit->device);