[SCSI] qla4xxx: Fixed active session re-open issue.

When iscsid restarted for an existing active session, set DDB will
fail with status already logged in. In this case, we have to send
logged in event to iscsid.

JIRA Key: OPENISCSI-21
Signed-off-by: NManish Rangankar <manish.rangankar@qlogic.com>
Signed-off-by: NVikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <JBottomley@Parallels.com>

drivers/scsi/qla4xxx/ql4_os.c

@@ -1142,8 +1142,12 @@ static int qla4xxx_conn_start(struct iscsi_cls_conn *cls_conn)
 		*/
 		if (mbx_sts)
 			if (ddb_entry->fw_ddb_device_state ==
-							DDB_DS_SESSION_ACTIVE)
+						DDB_DS_SESSION_ACTIVE) {
+				iscsi_conn_start(ddb_entry->conn);
+				iscsi_conn_login_event(ddb_entry->conn,
+						ISCSI_CONN_STATE_LOGGED_IN);
 				goto exit_set_param;
+			}
 
 		ql4_printk(KERN_ERR, ha, "%s: Failed set param for index[%d]\n",
 			   __func__, ddb_entry->fw_ddb_index);