EDAC: Handle empty msg strings when reporting errors

A reported error could look like this

[  226.178315] EDAC MC0: 1 CE  on mc#0csrow#0channel#0 (csrow:0 channel:0 page:0x427c0d offset:0xde0 grain:0 syndrome:0x1c6)

with two spaces back-to-back due to the msg argument of
edac_mc_handle_error being passed on empty by the specific drivers.
Handle that.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>

diff --git a/drivers/edac/edac_mc.c b/drivers/edac/edac_mc.c
index d507422..39c7524 100644 (file)
--- a/drivers/edac/edac_mc.c
+++ b/drivers/edac/edac_mc.c
@@ -966,20 +966,22 @@ static void edac_ce_error(struct mem_ctl_info *mci,
                          long grain)
 {
        unsigned long remapped_page;
+       char *msg_aux = "";
+
+       if (*msg)
+               msg_aux = " ";
 
        if (edac_mc_get_log_ce()) {
                if (other_detail && *other_detail)
                        edac_mc_printk(mci, KERN_WARNING,
-                                      "%d CE %s on %s (%s %s - %s)\n",
-                                      error_count,
-                                      msg, label, location,
-                                      detail, other_detail);
+                                      "%d CE %s%son %s (%s %s - %s)\n",
+                                      error_count, msg, msg_aux, label,
+                                      location, detail, other_detail);
                else
                        edac_mc_printk(mci, KERN_WARNING,
-                                      "%d CE %s on %s (%s %s)\n",
-                                      error_count,
-                                      msg, label, location,
-                                      detail);
+                                      "%d CE %s%son %s (%s %s)\n",
+                                      error_count, msg, msg_aux, label,
+                                      location, detail);
        }
        edac_inc_ce_error(mci, enable_per_layer_report, pos, error_count);
 
@@ -1014,27 +1016,31 @@ static void edac_ue_error(struct mem_ctl_info *mci,
                          const char *other_detail,
                          const bool enable_per_layer_report)
 {
+       char *msg_aux = "";
+
+       if (*msg)
+               msg_aux = " ";
+
        if (edac_mc_get_log_ue()) {
                if (other_detail && *other_detail)
                        edac_mc_printk(mci, KERN_WARNING,
-                                      "%d UE %s on %s (%s %s - %s)\n",
-                                      error_count,
-                                      msg, label, location, detail,
-                                      other_detail);
+                                      "%d UE %s%son %s (%s %s - %s)\n",
+                                      error_count, msg, msg_aux, label,
+                                      location, detail, other_detail);
                else
                        edac_mc_printk(mci, KERN_WARNING,
-                                      "%d UE %s on %s (%s %s)\n",
-                                      error_count,
-                                      msg, label, location, detail);
+                                      "%d UE %s%son %s (%s %s)\n",
+                                      error_count, msg, msg_aux, label,
+                                      location, detail);
        }
 
        if (edac_mc_get_panic_on_ue()) {
                if (other_detail && *other_detail)
-                       panic("UE %s on %s (%s%s - %s)\n",
-                             msg, label, location, detail, other_detail);
+                       panic("UE %s%son %s (%s%s - %s)\n",
+                             msg, msg_aux, label, location, detail, other_detail);
                else
-                       panic("UE %s on %s (%s%s)\n",
-                             msg, label, location, detail);
+                       panic("UE %s%son %s (%s%s)\n",
+                             msg, msg_aux, label, location, detail);
        }
 
        edac_inc_ue_error(mci, enable_per_layer_report, pos, error_count);