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>
diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c
index c36bf40..3b76605 100644
--- a/drivers/edac/amd64_edac.c
+++ b/drivers/edac/amd64_edac.c
@@ -754,13 +754,13 @@
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 @@
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;