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path: root/drivers/edac/edac_mc_sysfs.c
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Diffstat (limited to 'drivers/edac/edac_mc_sysfs.c')
-rw-r--r--drivers/edac/edac_mc_sysfs.c24
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/edac/edac_mc_sysfs.c b/drivers/edac/edac_mc_sysfs.c
index daa418b61525..0f671907c90b 100644
--- a/drivers/edac/edac_mc_sysfs.c
+++ b/drivers/edac/edac_mc_sysfs.c
@@ -347,6 +347,16 @@ static struct device_attribute *dynamic_csrow_ce_count_attr[] = {
&dev_attr_legacy_ch5_ce_count.attr
};
+static inline int nr_pages_per_csrow(struct csrow_info *csrow)
+{
+ int chan, nr_pages = 0;
+
+ for (chan = 0; chan < csrow->nr_channels; chan++)
+ nr_pages += csrow->channels[chan].dimm->nr_pages;
+
+ return nr_pages;
+}
+
/* Create a CSROW object under specifed edac_mc_device */
static int edac_create_csrow_object(struct mem_ctl_info *mci,
struct csrow_info *csrow, int index)
@@ -371,6 +381,9 @@ static int edac_create_csrow_object(struct mem_ctl_info *mci,
return err;
for (chan = 0; chan < csrow->nr_channels; chan++) {
+ /* Only expose populated DIMMs */
+ if (!csrow->channels[chan].dimm->nr_pages)
+ continue;
err = device_create_file(&csrow->dev,
dynamic_csrow_dimm_attr[chan]);
if (err < 0)
@@ -405,6 +418,9 @@ static int edac_create_csrow_objects(struct mem_ctl_info *mci)
struct csrow_info *csrow;
for (i = 0; i < mci->nr_csrows; i++) {
+ csrow = &mci->csrows[i];
+ if (!nr_pages_per_csrow(csrow))
+ continue;
err = edac_create_csrow_object(mci, &mci->csrows[i], i);
if (err < 0)
goto error;
@@ -414,7 +430,11 @@ static int edac_create_csrow_objects(struct mem_ctl_info *mci)
error:
for (--i; i >= 0; i--) {
csrow = &mci->csrows[i];
+ if (!nr_pages_per_csrow(csrow))
+ continue;
for (chan = csrow->nr_channels - 1; chan >= 0; chan--) {
+ if (!csrow->channels[chan].dimm->nr_pages)
+ continue;
device_remove_file(&csrow->dev,
dynamic_csrow_dimm_attr[chan]);
device_remove_file(&csrow->dev,
@@ -433,7 +453,11 @@ static void edac_delete_csrow_objects(struct mem_ctl_info *mci)
for (i = mci->nr_csrows - 1; i >= 0; i--) {
csrow = &mci->csrows[i];
+ if (!nr_pages_per_csrow(csrow))
+ continue;
for (chan = csrow->nr_channels - 1; chan >= 0; chan--) {
+ if (!csrow->channels[chan].dimm->nr_pages)
+ continue;
debugf1("Removing csrow %d channel %d sysfs nodes\n",
i, chan);
device_remove_file(&csrow->dev,