[PATCH] EDAC: Fix in e752x mc driver

This fix/change returns the offset into the page for the ce/ue error, instead
of just 0.  The e752x dram controller reads 34:6 of the linear address with
the error.

Signed-off-by: Mike Chan <mikechan@google.com>
Signed-off-by: doug thompson <norsk5@xmission.com>
Acked-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 11 insertions, 6 deletions

diff --git a/drivers/edac/e752x_edac.c b/drivers/edac/e752x_edac.c
index 9abfc0dc3bae..8bcc887692ab 100644
--- a/drivers/edac/e752x_edac.c
+++ b/drivers/edac/e752x_edac.c
@@ -285,8 +285,9 @@ static void do_process_ce(struct mem_ctl_info *mci, u16 error_one,
         if (!pvt->map_type)
                 row = 7 - row;
 
-        edac_mc_handle_ce(mci, page, 0, sec1_syndrome, row, channel,
-                "e752x CE");
+        /* e752x mc reads 34:6 of the DRAM linear address */
+        edac_mc_handle_ce(mci, page, offset_in_page(sec1_add << 4),
+                        sec1_syndrome, row, channel, "e752x CE");
 }
 
 static inline void process_ce(struct mem_ctl_info *mci, u16 error_one,
@@ -319,8 +320,10 @@ static void do_process_ue(struct mem_ctl_info *mci, u16 error_one,
                         ((block_page >> 1) & 3) :
                         edac_mc_find_csrow_by_page(mci, block_page);
 
-                edac_mc_handle_ue(mci, block_page, 0, row,
-                        "e752x UE from Read");
+                /* e752x mc reads 34:6 of the DRAM linear address */
+                edac_mc_handle_ue(mci, block_page,
+                                        offset_in_page(error_2b << 4),
+                                        row, "e752x UE from Read");
         }
         if (error_one & 0x0404) {
                 error_2b = scrb_add;
@@ -333,8 +336,10 @@ static void do_process_ue(struct mem_ctl_info *mci, u16 error_one,
                         ((block_page >> 1) & 3) :
                         edac_mc_find_csrow_by_page(mci, block_page);
 
-                edac_mc_handle_ue(mci, block_page, 0, row,
-                                "e752x UE from Scruber");
+                /* e752x mc reads 34:6 of the DRAM linear address */
+                edac_mc_handle_ue(mci, block_page,
+                                        offset_in_page(error_2b << 4),
+                                        row, "e752x UE from Scruber");
         }
 }