From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752675AbaH2Bcx (ORCPT ); Thu, 28 Aug 2014 21:32:53 -0400 Received: from mga01.intel.com ([192.55.52.88]:52978 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752625AbaH2Bcv (ORCPT ); Thu, 28 Aug 2014 21:32:51 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.97,862,1389772800"; d="scan'208";a="378454979" From: Lv Zheng To: "Rafael J. Wysocki" , Len Brown Cc: Lv Zheng , Lv Zheng , , linux-acpi@vger.kernel.org, Mika Westerberg , Bob Moore Subject: [PATCH] ACPICA: ACPI 5.1: Add support for runtime validation of _DSD package. Date: Fri, 29 Aug 2014 09:32:42 +0800 Message-Id: <856f29de2607cab36bb3936fae26daa275e0b129.1409275857.git.lv.zheng@intel.com> X-Mailer: git-send-email 1.7.10 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Mika Westerberg 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 Signed-off-by: Bob Moore Signed-off-by: Lv Zheng --- drivers/acpi/acpica/nsprepkg.c | 39 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) diff --git a/drivers/acpi/acpica/nsprepkg.c b/drivers/acpi/acpica/nsprepkg.c index 68f7258..1b13b92 100644 --- a/drivers/acpi/acpica/nsprepkg.c +++ b/drivers/acpi/acpica/nsprepkg.c @@ -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 */ -- 1.7.10