On Tue, Nov 29, 2011 at 2:48 AM, Lin Ming <ming.m.lin@xxxxxxxxx> wrote:
> On Tue, 2011-11-29 at 06:56 +0800, Moore, Robert wrote:
>> I'm going to let Lin Ming respond to this, since the functions in question appear to be Linux extensions to ACPICA.
[...]
> Yes, we should put the call back.
Great, are you going to push this patch yourself?
> diff --git a/drivers/acpi/acpica/dsargs.c b/drivers/acpi/acpica/dsargs.c
> index 8c7b997..42163d8 100644
> --- a/drivers/acpi/acpica/dsargs.c
> +++ b/drivers/acpi/acpica/dsargs.c
> @@ -387,5 +387,29 @@ acpi_status acpi_ds_get_region_arguments(union acpi_operand_object *obj_desc)
> status = acpi_ds_execute_arguments(node, node->parent,
> extra_desc->extra.aml_length,
> extra_desc->extra.aml_start);
> + if (ACPI_FAILURE(status)) {
> + return_ACPI_STATUS(status);
> + }
> +
> + /* Validate the region address/length via the host OS */
> +
> + status = acpi_os_validate_address(obj_desc->region.space_id,
> + obj_desc->region.address,
> + (acpi_size) obj_desc->region.length,
> + acpi_ut_get_node_name(node));
> +
> + if (ACPI_FAILURE(status)) {
> + /*
> + * Invalid address/length. We will emit an error message and mark
> + * the region as invalid, so that it will cause an additional error if
> + * it is ever used. Then return AE_OK.
> + */
> + ACPI_EXCEPTION((AE_INFO, status,
> + "During address validation of OpRegion [%4.4s]",
> + node->name.ascii));
> + obj_desc->common.flags |= AOPOBJ_INVALID;
> + status = AE_OK;
> + }
> +
> return_ACPI_STATUS(status);
> }
thanks,
Luca
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