diff options
| author | Tony Luck <tony.luck@intel.com> | 2016-04-14 10:21:52 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-05-04 14:48:42 -0700 |
| commit | 5582eb00f5b2362234cccf542232101db61ffc8b (patch) | |
| tree | eeff56664a563393c3e3bcc409ae7e5f0f8bd843 /drivers/edac | |
| parent | 27b3cc048a5275c53e26c15ffcab3fcf9a03cda0 (diff) | |
x86 EDAC, sb_edac.c: Repair damage introduced when "fixing" channel address
commit ff15e95c82768d589957dbb17d7eb7dba7904659 upstream.
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
Fixes: eb1af3b71f9d ("Fix computation of channel address")
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/edac')
| -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 cbee3179ec08..90c3fe99c786 100644 --- a/drivers/edac/sb_edac.c +++ b/drivers/edac/sb_edac.c @@ -1396,7 +1396,7 @@ 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; @@ -1435,7 +1435,7 @@ 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"); @@ -1471,7 +1471,7 @@ 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); |