EDAC: Fix csrow size reported in sysfs

On csrow-based memory controllers, we combine the csrow size from both
channels and there's no need to do that again in csrow_size_show which
leads to double the size of a csrow.

Fix it.

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

2 files changed, 4 insertions, 0 deletions

diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c
index 307ff66266a0..f74a684269ff 100644
--- a/drivers/edac/amd64_edac.c
+++ b/drivers/edac/amd64_edac.c
@@ -2174,6 +2174,7 @@ static int init_csrows(struct mem_ctl_info *mci)
                         dimm->edac_mode = edac_mode;
                         dimm->nr_pages = nr_pages;
                 }
+                csrow->nr_pages = nr_pages;
         }
 
         return empty;
diff --git a/drivers/edac/edac_mc_sysfs.c b/drivers/edac/edac_mc_sysfs.c
index cf13bff94f5c..bd46610979c7 100644
--- a/drivers/edac/edac_mc_sysfs.c
+++ b/drivers/edac/edac_mc_sysfs.c
@@ -180,6 +180,9 @@ static ssize_t csrow_size_show(struct device *dev,
         int i;
         u32 nr_pages = 0;
 
+        if (csrow->mci->csbased)
+                return sprintf(data, "%u\n", PAGES_TO_MiB(csrow->nr_pages));
+
         for (i = 0; i < csrow->nr_channels; i++)
                 nr_pages += csrow->channels[i]->dimm->nr_pages;
         return sprintf(data, "%u\n", PAGES_TO_MiB(nr_pages));