The patch titled
EDAC: e752x byte access fix
has been added to the -mm tree. Its filename is
edac-e752x-byte-access-fix.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: EDAC: e752x byte access fix
From: Brian Pomerantz <bapper@xxxxxxxxxx>
The reading of the DRA registers should be a byte at a time (one register at a
time) instead of 4 bytes at a time (four registers). Reading a dword at a
time retrieves erroneous information from all but the first register. A
change was made to read in each register in a loop prior to using the data in
those registers.
Signed-off-by: Brian Pomerantz <bapper@xxxxxxxxxx>
Signed-off-by: Dave Jiang <djiang@xxxxxxxxxx>
Signed-off-by: Doug Thompson <norsk5@xxxxxxxxxxxx>
Cc: Alan Cox <alan@xxxxxxxxxxxxxxxxxxx>
Cc: Andi Kleen <ak@xxxxxxx>
Cc: "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
drivers/edac/e752x_edac.c | 7 ++++++-
1 files changed, 6 insertions(+), 1 deletion(-)
diff -puN drivers/edac/e752x_edac.c~edac-e752x-byte-access-fix drivers/edac/e752x_edac.c
--- a/drivers/edac/e752x_edac.c~edac-e752x-byte-access-fix
+++ a/drivers/edac/e752x_edac.c
@@ -782,7 +782,12 @@ static void e752x_init_csrows(struct mem
u8 value;
u32 dra, drc, cumul_size;
- pci_read_config_dword(pdev, E752X_DRA, &dra);
+ dra = 0;
+ for (index=0; index < 4; index++) {
+ u8 dra_reg;
+ pci_read_config_byte(pdev, E752X_DRA+index, &dra_reg);
+ dra |= dra_reg << (index * 8);
+ }
pci_read_config_dword(pdev, E752X_DRC, &drc);
drc_chan = dual_channel_active(ddrcsr);
drc_drbg = drc_chan + 1; /* 128 in dual mode, 64 in single */
_
Patches currently in -mm which might be from bapper@xxxxxxxxxx are
edac-e752x-bit-mask-fix.patch
edac-e752x-byte-access-fix.patch
-
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