i7300_edac: Add a FIXME note about the error correction type
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/edac/i7300_edac.c b/drivers/edac/i7300_edac.c
index 7e035b6..36265e2 100644
--- a/drivers/edac/i7300_edac.c
+++ b/drivers/edac/i7300_edac.c
@@ -841,6 +841,15 @@
p_csrow->grain = 8;
p_csrow->nr_pages = dinfo->megabytes << 8;
p_csrow->mtype = MEM_FB_DDR2;
+
+ /*
+ * FIXME: the type of error detection actually depends of the
+ * mode of operation. When it is just one single memory chip, at
+ * socket 0, channel 0, it uses 8-byte-over-32-byte SECDED+ code.
+ * In normal or mirrored mode, it uses Single Device Data correction,
+ * with the possibility of using an extended algorithm for x8 memories
+ * See datasheet Sections 7.3.6 to 7.3.8
+ */
p_csrow->edac_mode = EDAC_S8ECD8ED;
/* ask what device type on this row */