[SCSI] qla2xxx: During loopdown perform Diagnostic loopback.

Signed-off-by: NSaurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: NChad Dupuis <chad.dupuis@qlogic.com>
Signed-off-by: NJames Bottomley <JBottomley@Parallels.com>

drivers/scsi/qla2xxx/qla_bsg.c

@@ -704,6 +704,7 @@ qla2x00_process_loopback(struct fc_bsg_job *bsg_job)
 	elreq.options = bsg_job->request->rqst_data.h_vendor.vendor_cmd[1];
 
 	if ((ha->current_topology == ISP_CFG_F ||
+	    (atomic_read(&vha->loop_state) == LOOP_DOWN) ||
 	    (IS_QLA81XX(ha) &&
 	    le32_to_cpu(*(uint32_t *)req_data) == ELS_OPCODE_BYTE
 	    && req_data_len == MAX_ELS_FRAME_PAYLOAD)) &&