Commit-ID: ff15e95c82768d589957dbb17d7eb7dba7904659
Gitweb: http://git.kernel.org/tip/ff15e95c82768d589957dbb17d7eb7dba7904659
Author: Tony Luck <tony.luck@xxxxxxxxx>
AuthorDate: Thu, 14 Apr 2016 10:21:52 -0700
Committer: Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Fri, 22 Apr 2016 10:10:01 +0200
x86 EDAC, sb_edac.c: Repair damage introduced when "fixing" channel address
In commit:
eb1af3b71f9d ("Fix computation of channel address")
I switched the "sck_way" variable from holding the log2 value read
from the h/w to instead be the actual number. Unfortunately it
is needed in log2 form when used to shift the address.
Tested-by: Patrick Geary <patrickg@xxxxxxxxxxxxxx>
Signed-off-by: Tony Luck <tony.luck@xxxxxxxxx>
Acked-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxx>
Cc: Aristeu Rozanski <arozansk@xxxxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: linux-edac@xxxxxxxxxxxxxxx
Cc: stable@xxxxxxxxxxxxxxx
Fixes: eb1af3b71f9d ("Fix computation of channel address")
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
drivers/edac/sb_edac.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/edac/sb_edac.c b/drivers/edac/sb_edac.c
index 93f0d41..f4666b0 100644
--- a/drivers/edac/sb_edac.c
+++ b/drivers/edac/sb_edac.c
@@ -2118,7 +2118,7 @@ static int get_memory_error_data(struct mem_ctl_info *mci,
}
ch_way = TAD_CH(reg) + 1;
- sck_way = 1 << TAD_SOCK(reg);
+ sck_way = TAD_SOCK(reg);
if (ch_way == 3)
idx = addr >> 6;
@@ -2157,7 +2157,7 @@ static int get_memory_error_data(struct mem_ctl_info *mci,
switch(ch_way) {
case 2:
case 4:
- sck_xch = 1 << sck_way * (ch_way >> 1);
+ sck_xch = (1 << sck_way) * (ch_way >> 1);
break;
default:
sprintf(msg, "Invalid mirror set. Can't decode addr");
@@ -2193,7 +2193,7 @@ static int get_memory_error_data(struct mem_ctl_info *mci,
ch_addr = addr - offset;
ch_addr >>= (6 + shiftup);
- ch_addr /= ch_way * sck_way;
+ ch_addr /= sck_xch;
ch_addr <<= (6 + shiftup);
ch_addr |= addr & ((1 << (6 + shiftup)) - 1);
--
To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
|