On Wed, Aug 16, 2017 at 12:27:53PM +0100, Punit Agrawal wrote:
> 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@xxxxxxx>
> Signed-off-by: Punit Agrawal <punit.agrawal@xxxxxxx>
> Cc: Borislav Petkov <bp@xxxxxxx>
> Cc: James Morse <james.morse@xxxxxxx>
> ---
> drivers/acpi/apei/ghes.c | 4 ++--
> drivers/acpi/apei/hest.c | 13 +++++++------
> include/acpi/apei.h | 8 +++++++-
> 3 files changed, 16 insertions(+), 9 deletions(-)
>
> diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c
> index d661d452b238..f8685bcbeff2 100644
> --- a/drivers/acpi/apei/ghes.c
> +++ b/drivers/acpi/apei/ghes.c
> @@ -1262,10 +1262,10 @@ static int __init ghes_init(void)
> {
> int rc;
>
> - if (acpi_disabled)
> + if (acpi_disabled || hest_disable == HEST_NOT_FOUND)
> return -ENODEV;
>
> - if (hest_disable) {
> + if (hest_disable == HEST_DISABLED) {
> pr_info(GHES_PFX "HEST is not enabled!\n");
> return -EINVAL;
> }
Yap, looks good.
Just a minor nitpick: I'd additionally group the hest_disable checking
in one switch-case, so that the code flow is obvious at a quick glance:
if (acpi_disabled)
return -ENODEV;
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;
}
Thx.
--
Regards/Gruss,
Boris.
SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284 (AG Nürnberg)
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