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amd64_edac: check only ECC bit in amd64_determine_edac_cap 

Checking whether the machine is using ECC enabled DRAM is done through
testing the DimmEccEn bit in the DRAM Cfg Low register (F2x[1,0]90). Do
that instead of testing all bits from the DimmEccEn upwards.

Also, remove mci->edac_cap assignment and use value returned from
amd64_determine_edac_cap().

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
This commit is contained in:
Borislav Petkov 2009-06-10 18:29:54 +02:00
parent 28d0325ce6
commit 584fcff428
1 changed files with 2 additions and 3 deletions
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5
drivers/edac/amd64_edac.c
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@ -754,13 +754,13 @@ static void amd64_cpu_display_info(struct amd64_pvt *pvt)
static enum edac_type amd64_determine_edac_cap(struct amd64_pvt *pvt)
{
int bit;
enum dev_type edac_cap = EDAC_NONE;
enum dev_type edac_cap = EDAC_FLAG_NONE;
bit = (boot_cpu_data.x86 > 0xf || pvt->ext_model >= OPTERON_CPU_REV_F)
? 19
: 17;
if (pvt->dclr0 >> BIT(bit))
if (pvt->dclr0 & BIT(bit))
edac_cap = EDAC_FLAG_SECDED;
return edac_cap;
@ -3006,7 +3006,6 @@ static void amd64_setup_mci_misc_attributes(struct mem_ctl_info *mci)
mci->mtype_cap = MEM_FLAG_DDR2 | MEM_FLAG_RDDR2;
mci->edac_ctl_cap = EDAC_FLAG_NONE;
mci->edac_cap = EDAC_FLAG_NONE;
if (pvt->nbcap & K8_NBCAP_SECDED)
mci->edac_ctl_cap |= EDAC_FLAG_SECDED;