diff options
| author | Tony Luck <tony.luck@intel.com> | 2016-04-14 10:21:52 -0700 |
|---|---|---|
| committer | Sasha Levin <sasha.levin@oracle.com> | 2016-05-10 12:20:19 -0400 |
| commit | b7c4a9d51100cf69d87b758fb8aac3c2eb7b8499 (patch) | |
| tree | 980310bcc377466b1dbbc85d3b215f35e30945b7 | |
| parent | 24b769352bd519d6d932ea070e295e8b13f43af8 (diff) | |
| download | lwn-b7c4a9d51100cf69d87b758fb8aac3c2eb7b8499.tar.gz lwn-b7c4a9d51100cf69d87b758fb8aac3c2eb7b8499.zip | |
x86 EDAC, sb_edac.c: Repair damage introduced when "fixing" channel address
[ Upstream commit ff15e95c82768d589957dbb17d7eb7dba7904659 ]
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@supermicro.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Acked-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Cc: Aristeu Rozanski <arozansk@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-edac@vger.kernel.org
Cc: stable@vger.kernel.org
Fixes: eb1af3b71f9d ("Fix computation of channel address")
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
| -rw-r--r-- | drivers/edac/sb_edac.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/edac/sb_edac.c b/drivers/edac/sb_edac.c index b97f5f0c5c0a..6251a0aeadcb 100644 --- a/drivers/edac/sb_edac.c +++ b/drivers/edac/sb_edac.c @@ -1264,7 +1264,7 @@ 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; @@ -1303,7 +1303,7 @@ 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"); @@ -1339,7 +1339,7 @@ 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); |