edac: add support for error type "Info"

The CPER spec defines a forth type of error: informational
logs. Add support for it at the edac API and at the
trace event interface.
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

include/linux/edac.h

@@ -109,8 +109,24 @@ enum hw_event_mc_err_type {
 	HW_EVENT_ERR_CORRECTED,
 	HW_EVENT_ERR_UNCORRECTED,
 	HW_EVENT_ERR_FATAL,
+	HW_EVENT_ERR_INFO,
 };
 
+static inline char *mc_event_error_type(const unsigned int err_type)
+{
+	switch (err_type) {
+	case HW_EVENT_ERR_CORRECTED:
+		return "Corrected";
+	case HW_EVENT_ERR_UNCORRECTED:
+		return "Uncorrected";
+	case HW_EVENT_ERR_FATAL:
+		return "Fatal";
+	default:
+	case HW_EVENT_ERR_INFO:
+		return "Info";
+	}
+}
+
 /**
  * enum mem_type - memory types. For a more detailed reference, please see
  *			http://en.wikipedia.org/wiki/DRAM

include/ras/ras_event.h

@@ -78,9 +78,7 @@ TRACE_EVENT(mc_event,
 
 	TP_printk("%d %s error%s:%s%s on %s (mc:%d location:%d:%d:%d address:0x%08lx grain:%d syndrome:0x%08lx%s%s)",
 		  __entry->error_count,
-		  (__entry->error_type == HW_EVENT_ERR_CORRECTED) ? "Corrected" :
-			((__entry->error_type == HW_EVENT_ERR_FATAL) ?
-			"Fatal" : "Uncorrected"),
+		  mc_event_error_type(__entry->error_type),
 		  __entry->error_count > 1 ? "s" : "",
 		  ((char *)__get_str(msg))[0] ? " " : "",
 		  __get_str(msg),