i5000: Fix the memory size calculation with 2R memories

When 2R memories are found, the memory size should be multiplied
by two, otherwise, it will report half of the memory size:

       +-----------------------------------------------+
       |                      mc0                      |
       |        branch0        |        branch1        |
       | channel0  | channel1  | channel0  | channel1  |
-------+-----------------------------------------------+
slot3: |     0 MB  |     0 MB  |     0 MB  |     0 MB  |
slot2: |     0 MB  |     0 MB  |     0 MB  |     0 MB  |
-------+-----------------------------------------------+
slot1: |     0 MB  |     0 MB  |     0 MB  |     0 MB  |
slot0: |  1024 MB  |  1024 MB  |  1024 MB  |  1024 MB  |
-------+-----------------------------------------------+

(the above machine have 4 x 2GB 2R memories)

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/edac/i5000_edac.c b/drivers/edac/i5000_edac.c
index 39c63757c2a14fd7bc988c23d7ee6be2e84d0a06..6a49dd00b81b8fce1181a0e0d436bb8e4ce211d5 100644 (file)
--- 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 */