From: dougthompson on
From: Peter Tyser <ptyser(a)xes-inc.com>

Commit b4846251727a38a7f248e41308c060995371dd05 accidentally broke how a
chip select's first and last page addresses are calculated. The page
addresses are being shifted too far right by PAGE_SHIFT. This results
in errors such as:

EDAC MPC85xx MC1: Err addr: 0x003075c0
EDAC MPC85xx MC1: PFN: 0x00000307
EDAC MPC85xx MC1: PFN out of range!
EDAC MC1: INTERNAL ERROR: row out of range (4 >= 4)
EDAC MC1: CE - no information available: INTERNAL ERROR

The vale of PAGE_SHIFT is already being taken into consideration during
the calculation of the 'start' and 'end' variables, thus it is not
necessary to account for it again when setting a chip select's first and
last page address.

Signed-off-by: Peter Tyser <ptyser(a)xes-inc.com>
Signed-off-by: Doug Thompson <dougthompson(a)xmission.com>
---
drivers/edac/mpc85xx_edac.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)

Index: linux-2.6.33-rc4/drivers/edac/mpc85xx_edac.c
===================================================================
--- linux-2.6.33-rc4.orig/drivers/edac/mpc85xx_edac.c 2010-01-13 00:15:58.000000000 -0700
+++ linux-2.6.33-rc4/drivers/edac/mpc85xx_edac.c 2010-01-13 00:16:00.000000000 -0700
@@ -804,8 +804,8 @@ static void __devinit mpc85xx_init_csrow
end <<= (24 - PAGE_SHIFT);
end |= (1 << (24 - PAGE_SHIFT)) - 1;

- csrow->first_page = start >> PAGE_SHIFT;
- csrow->last_page = end >> PAGE_SHIFT;
+ csrow->first_page = start;
+ csrow->last_page = end;
csrow->nr_pages = end + 1 - start;
csrow->grain = 8;
csrow->mtype = mtype;
--
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