Pull bugzilla-9429 into release branch (6ac47735) · Commits · e / devices / android_kernel_fairphone_FP4

drivers/acpi/dispatcher/dsobject.c

+85 −6

Original line number	Diff line number	Diff line
		@@ -137,6 +137,71 @@ acpi_ds_build_internal_object(struct acpi_walk_state *walk_state,
		return_ACPI_STATUS(status);
		}
		}

		/* Special object resolution for elements of a package */

		if ((op->common.parent->common.aml_opcode == AML_PACKAGE_OP) \|\|
		(op->common.parent->common.aml_opcode ==
		AML_VAR_PACKAGE_OP)) {
		/*
		* Attempt to resolve the node to a value before we insert it into
		* the package. If this is a reference to a common data type,
		* resolve it immediately. According to the ACPI spec, package
		* elements can only be "data objects" or method references.
		* Attempt to resolve to an Integer, Buffer, String or Package.
		* If cannot, return the named reference (for things like Devices,
		* Methods, etc.) Buffer Fields and Fields will resolve to simple
		* objects (int/buf/str/pkg).
		*
		* NOTE: References to things like Devices, Methods, Mutexes, etc.
		* will remain as named references. This behavior is not described
		* in the ACPI spec, but it appears to be an oversight.
		*/
		obj_desc = (union acpi_operand_object *)op->common.node;

		status =
		acpi_ex_resolve_node_to_value(ACPI_CAST_INDIRECT_PTR
		(struct
		acpi_namespace_node,
		&obj_desc),
		walk_state);
		if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
		}

		switch (op->common.node->type) {
		/*
		* For these types, we need the actual node, not the subobject.
		* However, the subobject got an extra reference count above.
		*/
		case ACPI_TYPE_MUTEX:
		case ACPI_TYPE_METHOD:
		case ACPI_TYPE_POWER:
		case ACPI_TYPE_PROCESSOR:
		case ACPI_TYPE_EVENT:
		case ACPI_TYPE_REGION:
		case ACPI_TYPE_DEVICE:
		case ACPI_TYPE_THERMAL:

		obj_desc =
		(union acpi_operand_object *)op->common.
		node;
		break;

		default:
		break;
		}

		/*
		* If above resolved to an operand object, we are done. Otherwise,
		* we have a NS node, we must create the package entry as a named
		* reference.
		*/
		if (ACPI_GET_DESCRIPTOR_TYPE(obj_desc) !=
		ACPI_DESC_TYPE_NAMED) {
		goto exit;
		}
		}
		}

		/* Create and init a new internal ACPI object */
		@@ -156,6 +221,7 @@ acpi_ds_build_internal_object(struct acpi_walk_state *walk_state,
		return_ACPI_STATUS(status);
		}

		exit:
		*obj_desc_ptr = obj_desc;
		return_ACPI_STATUS(AE_OK);
		}
		@@ -356,12 +422,25 @@ acpi_ds_build_internal_package_obj(struct acpi_walk_state *walk_state,
		arg = arg->common.next;
		for (i = 0; arg && (i < element_count); i++) {
		if (arg->common.aml_opcode == AML_INT_RETURN_VALUE_OP) {

		if (arg->common.node->type == ACPI_TYPE_METHOD) {
		/*
		* A method reference "looks" to the parser to be a method
		* invocation, so we special case it here
		*/
		arg->common.aml_opcode = AML_INT_NAMEPATH_OP;
		status =
		acpi_ds_build_internal_object(walk_state,
		arg,
		&obj_desc->
		package.
		elements[i]);
		} else {
		/* This package element is already built, just get it */

		obj_desc->package.elements[i] =
		ACPI_CAST_PTR(union acpi_operand_object,
		arg->common.node);
		}
		} else {
		status = acpi_ds_build_internal_object(walk_state, arg,
		&obj_desc->