[SCSI] zfcp: fix: avoid removal of fsf reqs before qdio queues are down

Fix the fix ... One of my previous fixes introduced removal of all fsf
requests in zfcp's eh_host_reset_handler. But this must not happen
before qdio queues are shut down. So, I revert the changes of
zfcp_scsi_eh_host_reset_handler.

Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

diff --git a/drivers/s390/scsi/zfcp_erp.c b/drivers/s390/scsi/zfcp_erp.c
index af42a0e..862a411 100644 (file)
--- a/drivers/s390/scsi/zfcp_erp.c
+++ b/drivers/s390/scsi/zfcp_erp.c
@@ -91,6 +91,7 @@ static int zfcp_erp_unit_strategy_clearstati(struct zfcp_unit *);
 static int zfcp_erp_unit_strategy_close(struct zfcp_erp_action *);
 static int zfcp_erp_unit_strategy_open(struct zfcp_erp_action *);
 
+static void zfcp_erp_action_dismiss_adapter(struct zfcp_adapter *);
 static void zfcp_erp_action_dismiss_port(struct zfcp_port *);
 static void zfcp_erp_action_dismiss_unit(struct zfcp_unit *);
 static void zfcp_erp_action_dismiss(struct zfcp_erp_action *);
@@ -3157,7 +3158,7 @@ zfcp_erp_action_cleanup(int action, struct zfcp_adapter *adapter,
 }
 
 
-void zfcp_erp_action_dismiss_adapter(struct zfcp_adapter *adapter)
+static void zfcp_erp_action_dismiss_adapter(struct zfcp_adapter *adapter)
 {
        struct zfcp_port *port;
 

diff --git a/drivers/s390/scsi/zfcp_ext.h b/drivers/s390/scsi/zfcp_ext.h
index 3125a42..b8794d7 100644 (file)
--- a/drivers/s390/scsi/zfcp_ext.h
+++ b/drivers/s390/scsi/zfcp_ext.h
@@ -134,7 +134,6 @@ extern void zfcp_erp_modify_adapter_status(struct zfcp_adapter *, u32, int);
 extern int  zfcp_erp_adapter_reopen(struct zfcp_adapter *, int);
 extern int  zfcp_erp_adapter_shutdown(struct zfcp_adapter *, int);
 extern void zfcp_erp_adapter_failed(struct zfcp_adapter *);
-extern void zfcp_erp_action_dismiss_adapter(struct zfcp_adapter *);
 
 extern void zfcp_erp_modify_port_status(struct zfcp_port *, u32, int);
 extern int  zfcp_erp_port_reopen(struct zfcp_port *, int);

diff --git a/drivers/s390/scsi/zfcp_scsi.c b/drivers/s390/scsi/zfcp_scsi.c
index 753bb9b..7cafa34 100644 (file)
--- a/drivers/s390/scsi/zfcp_scsi.c
+++ b/drivers/s390/scsi/zfcp_scsi.c
@@ -544,7 +544,6 @@ int zfcp_scsi_eh_host_reset_handler(struct scsi_cmnd *scpnt)
 {
        struct zfcp_unit *unit;
        struct zfcp_adapter *adapter;
-       unsigned long flags;
 
        unit = (struct zfcp_unit*) scpnt->device->hostdata;
        adapter = unit->port->adapter;
@@ -552,22 +551,8 @@ int zfcp_scsi_eh_host_reset_handler(struct scsi_cmnd *scpnt)
        ZFCP_LOG_NORMAL("host/bus reset because of problems with "
                        "unit 0x%016Lx\n", unit->fcp_lun);
 
-       write_lock_irqsave(&adapter->erp_lock, flags);
-       if (atomic_test_mask(ZFCP_STATUS_ADAPTER_ERP_PENDING,
-                            &adapter->status)) {
-               zfcp_erp_modify_adapter_status(adapter,
-                      ZFCP_STATUS_COMMON_UNBLOCKED|ZFCP_STATUS_COMMON_OPEN,
-                      ZFCP_CLEAR);
-               zfcp_erp_action_dismiss_adapter(adapter);
-               write_unlock_irqrestore(&adapter->erp_lock, flags);
-               zfcp_fsf_req_dismiss_all(adapter);
-               adapter->fsf_req_seq_no = 0;
-               zfcp_erp_adapter_reopen(adapter, 0);
-       } else {
-               write_unlock_irqrestore(&adapter->erp_lock, flags);
-               zfcp_erp_adapter_reopen(adapter, 0);
-               zfcp_erp_wait(adapter);
-       }
+       zfcp_erp_adapter_reopen(adapter, 0);
+       zfcp_erp_wait(adapter);
 
        return SUCCESS;
 }