ACPICA: ACPI 5.1: Add support for runtime validation of _DSD package. (b1272e1f) · Commits · 戴 / test

Adds ACPICA kernel runtime support to validate contents/format of the _DSD package, similar to the iASL support. Ported by Mika Westerberg. Signed-off-by:

Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by:

Bob Moore <robert.moore@intel.com> Signed-off-by:

Lv Zheng <lv.zheng@intel.com> Signed-off-by:

Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/acpi/acpica/nsprepkg.c

+39 −0

Original line number	Diff line number	Diff line
		@@ -316,6 +316,45 @@ acpi_ns_check_package(struct acpi_evaluate_info *info,
		acpi_ns_check_package_list(info, package, elements, count);
		break;

		case ACPI_PTYPE2_UUID_PAIR:

		/* The package must contain pairs of (UUID + type) */

		if (count & 1) {
		expected_count = count + 1;
		goto package_too_small;
		}

		while (count > 0) {
		status = acpi_ns_check_object_type(info, elements,
		package->ret_info.
		object_type1, 0);
		if (ACPI_FAILURE(status)) {
		return (status);
		}

		/* Validate length of the UUID buffer */

		if ((*elements)->buffer.length != 16) {
		ACPI_WARN_PREDEFINED((AE_INFO,
		info->full_pathname,
		info->node_flags,
		"Invalid length for UUID Buffer"));
		return (AE_AML_OPERAND_VALUE);
		}

		status = acpi_ns_check_object_type(info, elements + 1,
		package->ret_info.
		object_type2, 0);
		if (ACPI_FAILURE(status)) {
		return (status);
		}

		elements += 2;
		count -= 2;
		}
		break;

		default:

		/* Should not get here if predefined info table is correct */

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