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Commit 02d4fb36 authored Mar 08, 2013 by Bob Moore Committed by Rafael J. Wysocki Mar 12, 2013

ACPICA: Object repair: Allow 0-length packages for variable-length packages



For the predefined names that return fully variable-length
packages, allow a zero-length package with no warning, since it
is technically a legal construct (and BIOS writers use it.)

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>

parent 40411255

drivers/acpi/acpica/nsprepkg.c

+8 −2

Original line number	Diff line number	Diff line
		@@ -112,9 +112,15 @@ acpi_ns_check_package(struct acpi_predefined_data *data,
		elements = return_object->package.elements;
		count = return_object->package.count;

		/* The package must have at least one element, else invalid */

		/*
		* Most packages must have at least one element. The only exception
		* is the variable-length package (ACPI_PTYPE1_VAR).
		*/
		if (!count) {
		if (package->ret_info.type == ACPI_PTYPE1_VAR) {
		return (AE_OK);
		}

		ACPI_WARN_PREDEFINED((AE_INFO, data->pathname, data->node_flags,
		"Return Package has no elements (empty)"));