diff --git a/drivers/edac/i3200_edac.c b/drivers/edac/i3200_edac.c
index 47180a08edad28c7c95fea0cd51e9b7b15172f27..b6653a6fc5d56af68e55b0f2ea10855a1927ee2f 100644
--- a/drivers/edac/i3200_edac.c
+++ b/drivers/edac/i3200_edac.c
@@ -391,7 +391,7 @@ static int i3200_probe1(struct pci_dev *pdev, int dev_idx)
 		for (j = 0; j < nr_channels; j++) {
 			struct dimm_info *dimm = csrow->channels[j]->dimm;
 
-			dimm->nr_pages = nr_pages / nr_channels;
+			dimm->nr_pages = nr_pages;
 			dimm->grain = nr_pages << PAGE_SHIFT;
 			dimm->mtype = MEM_DDR2;
 			dimm->dtype = DEV_UNKNOWN;
diff --git a/drivers/edac/i5000_edac.c b/drivers/edac/i5000_edac.c
index 39c63757c2a14fd7bc988c23d7ee6be2e84d0a06..6a49dd00b81b8fce1181a0e0d436bb8e4ce211d5 100644
--- a/drivers/edac/i5000_edac.c
+++ b/drivers/edac/i5000_edac.c
@@ -1012,6 +1012,10 @@ static void handle_channel(struct i5000_pvt *pvt, int slot, int channel,
 			/* add the number of COLUMN bits */
 			addrBits += MTR_DIMM_COLS_ADDR_BITS(mtr);
 
+			/* Dual-rank memories have twice the size */
+			if (dinfo->dual_rank)
+				addrBits++;
+
 			addrBits += 6;	/* add 64 bits per DIMM */
 			addrBits -= 20;	/* divide by 2^^20 */
 			addrBits -= 3;	/* 8 bits per bytes */
diff --git a/drivers/edac/sb_edac.c b/drivers/edac/sb_edac.c
index f3b1f9fafa4b20b4f40917bcbab827ad760515df..5715b7c2c5177a6c76ed732fb6f20de9b7578220 100644
--- a/drivers/edac/sb_edac.c
+++ b/drivers/edac/sb_edac.c
@@ -513,7 +513,8 @@ static int get_dimm_config(struct mem_ctl_info *mci)
 {
 	struct sbridge_pvt *pvt = mci->pvt_info;
 	struct dimm_info *dimm;
-	int i, j, banks, ranks, rows, cols, size, npages;
+	unsigned i, j, banks, ranks, rows, cols, npages;
+	u64 size;
 	u32 reg;
 	enum edac_type mode;
 	enum mem_type mtype;
@@ -585,10 +586,10 @@ static int get_dimm_config(struct mem_ctl_info *mci)
 				cols = numcol(mtr);
 
 				/* DDR3 has 8 I/O banks */
-				size = (rows * cols * banks * ranks) >> (20 - 3);
+				size = ((u64)rows * cols * banks * ranks) >> (20 - 3);
 				npages = MiB_TO_PAGES(size);
 
-				edac_dbg(0, "mc#%d: channel %d, dimm %d, %d Mb (%d pages) bank: %d, rank: %d, row: %#x, col: %#x\n",
+				edac_dbg(0, "mc#%d: channel %d, dimm %d, %Ld Mb (%d pages) bank: %d, rank: %d, row: %#x, col: %#x\n",
 					 pvt->sbridge_dev->mc, i, j,
 					 size, npages,
 					 banks, ranks, rows, cols);