[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>

diff --git a/drivers/edac/e752x_edac.c b/drivers/edac/e752x_edac.c
index 9abfc0d..8bcc887 100644 (file)
--- 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");
        }
 }