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ACPI / APEI: Suppress message if HEST not present

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According to the ACPI specification, firmware is not required to provide
the Hardware Error Source Table (HEST). When HEST is not present, the
following superfluous message is printed to the kernel boot log -

[    3.460067] GHES: HEST is not enabled!

Extend hest_disable variable to track whether the firmware provides this
table and if it is not present skip any log output. The existing
behaviour is preserved in all other cases.

Suggested-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Punit Agrawal <punit.agrawal@arm.com>
Reviewed-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Punit Agrawal
2017-08-29 14:20:20 +01:00
committed by Rafael J. Wysocki
parent 1d5d820b8f
commit e931d0dab4
3 changed files with 20 additions and 8 deletions
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7
drivers/acpi/apei/ghes.c
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@@ -1266,9 +1266,14 @@ static int __init ghes_init(void)
if (acpi_disabled)
return -ENODEV;
if (hest_disable) {
switch (hest_disable) {
case HEST_NOT_FOUND:
return -ENODEV;
case HEST_DISABLED:
pr_info(GHES_PFX "HEST is not enabled!\n");
return -EINVAL;
default:
break;
}
if (ghes_disable) {