diff options
Diffstat (limited to 'drivers/edac')
| -rw-r--r-- | drivers/edac/edac_mc_sysfs.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/edac/edac_mc_sysfs.c b/drivers/edac/edac_mc_sysfs.c index daa418b6152..0f671907c90 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, |