amd64_edac: Use DBAM_DIMM macro
Instead of open-coding it, use the DBAM_DIMM macro in
amd64_csrow_nr_pages() which we have already.
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
diff --git a/drivers/edac/amd64_edac.h b/drivers/edac/amd64_edac.h
index abefab4..e864f40 100644
--- a/drivers/edac/amd64_edac.h
+++ b/drivers/edac/amd64_edac.h
@@ -219,7 +219,7 @@
#define DBAM1 0x180
/* Extract the DIMM 'type' on the i'th DIMM from the DBAM reg value passed */
-#define DBAM_DIMM(i, reg) ((((reg) >> (4*i))) & 0xF)
+#define DBAM_DIMM(i, reg) ((((reg) >> (4*(i)))) & 0xF)
#define DBAM_MAX_VALUE 11