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edac: i5100 fix initialization code 

Allow csrows to properly initialize when the topology only has active
channels on 2 and 3.  This new check allows proper detection and
initialization in this topology.  Only checking the first mrt that
represented channels 0 and 1 is not sufficient.

I also fixed up the related debug information path.  I can submit as a 2nd
patch if needed.

Signed-off-by: Keith Mannthey <kmannth@us.ibm.com>
Acked-by: Aristeu Rozanski <aris@ruivo.org>
Signed-off-by: Doug Thompson <dougthompson@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Keith Mannthey 2009-10-26 16:50:11 -07:00 committed by Linus Torvalds
parent 0616fb003d
commit c2494ace99
1 changed files with 4 additions and 3 deletions
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7
drivers/edac/i5000_edac.c
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@ -1173,7 +1173,7 @@ static void i5000_get_mc_regs(struct mem_ctl_info *mci)
pci_read_config_word(pvt->branch_1, where,
&pvt->b1_mtr[slot_row]);
debugf2("MTR%d where=0x%x B1 value=0x%x\n", slot_row,
where, pvt->b0_mtr[slot_row]);
where, pvt->b1_mtr[slot_row]);
} else {
pvt->b1_mtr[slot_row] = 0;
}
@ -1232,7 +1232,7 @@ static int i5000_init_csrows(struct mem_ctl_info *mci)
struct csrow_info *p_csrow;
int empty, channel_count;
int max_csrows;
int mtr;
int mtr, mtr1;
int csrow_megs;
int channel;
int csrow;
@ -1251,9 +1251,10 @@ static int i5000_init_csrows(struct mem_ctl_info *mci)
/* use branch 0 for the basis */
mtr = pvt->b0_mtr[csrow >> 1];
mtr1 = pvt->b1_mtr[csrow >> 1];
/* if no DIMMS on this row, continue */
if (!MTR_DIMMS_PRESENT(mtr))
if (!MTR_DIMMS_PRESENT(mtr) && !MTR_DIMMS_PRESENT(mtr1))
continue;
/* FAKE OUT VALUES, FIXME */