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| author | Mika Westerberg <mika.westerberg@linux.intel.com> | 2014-08-29 09:32:42 +0800 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2014-09-02 01:48:00 +0200 |
| commit | b1272e1fe14f8c143e9c8924e9b490ceb1f6af21 (patch) | |
| tree | afd92f5b3556975dc599d7d7c74277a1905ce325 | |
| parent | 69e273c0b0a3c337a521d083374c918dc52c666f (diff) | |
| download | linux-stable-b1272e1fe14f8c143e9c8924e9b490ceb1f6af21.tar.gz linux-stable-b1272e1fe14f8c143e9c8924e9b490ceb1f6af21.tar.bz2 linux-stable-b1272e1fe14f8c143e9c8924e9b490ceb1f6af21.zip | |
ACPICA: ACPI 5.1: Add support for runtime validation of _DSD package.
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>
| -rw-r--r-- | drivers/acpi/acpica/nsprepkg.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/nsprepkg.c b/drivers/acpi/acpica/nsprepkg.c index 68f725839eb6..1b13b921dda9 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 */ |