[SCSI] mpt2sas: Added new info messages for IR and Expander events.

(1) for the MPI2_EVENT_IR_OPERATION_STATUS event, add support to print
"background init" or "make data consistent" for debugging purposes.  If the
RAIDOperation is set to a value not defined, then don't print anything

(2) for the MPI2_EVENT_SAS_DEVICE_STATUS_CHANGE event, add support to print
"expander reduced functionality" and "expander reduced functionality
complete", which are new events.
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: Eric Moore <Eric.moore@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

drivers/scsi/mpt2sas/mpt2sas_scsih.c

@@ -4279,6 +4279,12 @@ _scsih_sas_device_status_change_event_debug(struct MPT2SAS_ADAPTER *ioc,
 	case MPI2_EVENT_SAS_DEV_STAT_RC_ASYNC_NOTIFICATION:
 		reason_str = "internal async notification";
 		break;
+	case MPI2_EVENT_SAS_DEV_STAT_RC_EXPANDER_REDUCED_FUNCTIONALITY:
+		reason_str = "expander reduced functionality";
+		break;
+	case MPI2_EVENT_SAS_DEV_STAT_RC_CMP_EXPANDER_REDUCED_FUNCTIONALITY:
+		reason_str = "expander reduced functionality complete";
+		break;
 	default:
 		reason_str = "unknown reason";
 		break;
@@ -5062,11 +5068,17 @@ _scsih_sas_ir_operation_status_event_debug(struct MPT2SAS_ADAPTER *ioc,
 	case MPI2_EVENT_IR_RAIDOP_CONSISTENCY_CHECK:
 		reason_str = "consistency check";
 		break;
-	default:
-		reason_str = "unknown reason";
+	case MPI2_EVENT_IR_RAIDOP_BACKGROUND_INIT:
+		reason_str = "background init";
+		break;
+	case MPI2_EVENT_IR_RAIDOP_MAKE_DATA_CONSISTENT:
+		reason_str = "make data consistent";
 		break;
 	}
 
+	if (!reason_str)
+		return;
+
 	printk(MPT2SAS_INFO_FMT "raid operational status: (%s)"
 	    "\thandle(0x%04x), percent complete(%d)\n",
 	    ioc->name, reason_str,