[SCSI] qla4xxx: set driver ddb state correctly in process_ddb_changed

If fw ddb state is ACTIVE mark driver ddb stat as ONLINE and
unblock iscsi session.
Signed-off-by: NVikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: NRavi Anand <ravi.anand@qlogic.com>
Reviewed-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

drivers/scsi/qla4xxx/ql4_init.c

@@ -1487,7 +1487,10 @@ int qla4xxx_process_ddb_changed(struct scsi_qla_host *ha, uint32_t fw_ddb_index,
 		      ddb_entry->fw_ddb_device_state, state, fw_ddb_index));
 	if (old_fw_ddb_device_state == state &&
 	    state == DDB_DS_SESSION_ACTIVE) {
-		/* Do nothing, state not changed. */
+		if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) {
+			atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
+			iscsi_unblock_session(ddb_entry->sess);
+		}
 		return QLA_SUCCESS;
 	}