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x86 EDAC, sb_edac.c: Repair damage introduced when "fixing" channel address

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In commit:

  eb1af3b71f ("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: eb1af3b71f ("Fix computation of channel address")
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Tony Luck 2016-04-14 10:21:52 -07:00 committed by Ingo Molnar
parent 103f6112f2
commit ff15e95c82
1 changed files with 3 additions and 3 deletions
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6
drivers/edac/sb_edac.c
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@ -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);