[PATCH 2/5] EDAC/mce_amd: Always load on SMCA systems

From: Yazen Ghannam
Date: Thu Jan 09 2020 - 20:57:13 EST


From: Yazen Ghannam <yazen.ghannam@xxxxxxx>

MCA error decoding on SMCA systems is not dependent on family.

Return success early if the system supports the SMCA feature.

Signed-off-by: Yazen Ghannam <yazen.ghannam@xxxxxxx>
---
drivers/edac/mce_amd.c | 13 ++++++++-----
1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/drivers/edac/mce_amd.c b/drivers/edac/mce_amd.c
index aa6ea53f7d14..524c63fdad42 100644
--- a/drivers/edac/mce_amd.c
+++ b/drivers/edac/mce_amd.c
@@ -1189,6 +1189,11 @@ static int __init mce_amd_init(void)
if (!fam_ops)
return -ENOMEM;

+ if (boot_cpu_has(X86_FEATURE_SMCA)) {
+ xec_mask = 0x3f;
+ goto out;
+ }
+
switch (c->x86) {
case 0xf:
fam_ops->mc0_mce = k8_mc0_mce;
@@ -1237,11 +1242,8 @@ static int __init mce_amd_init(void)

case 0x17:
case 0x18:
- xec_mask = 0x3f;
- if (!boot_cpu_has(X86_FEATURE_SMCA)) {
- printk(KERN_WARNING "Decoding supported only on Scalable MCA processors.\n");
- goto err_out;
- }
+ pr_warn("Decoding supported only on Scalable MCA processors.\n");
+ goto err_out;
break;

default:
@@ -1249,6 +1251,7 @@ static int __init mce_amd_init(void)
goto err_out;
}

+out:
pr_info("MCE: In-kernel MCE decoding enabled.\n");

mce_register_decode_chain(&amd_mce_dec_nb);
--
2.17.1