ACPICA: Do not repair _TSS return package if _PSS is present

We can only sort the _TSS return package if there is no _PSS
in the same scope. This is because if _PSS is present, the ACPI
specification dictates that the _TSS Power Dissipation field is
to be ignored, and therefore some BIOSs leave garbage values in
the _TSS Power field(s).  In this case, it is best to just return
the _TSS package as-is.

Reported-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

drivers/acpi/acpica/aclocal.h

@@ -357,6 +357,7 @@ struct acpi_predefined_data {
 	char *pathname;
 	const union acpi_predefined_info *predefined;
 	union acpi_operand_object *parent_package;
+	struct acpi_namespace_node *node;
 	u32 flags;
 	u8 node_flags;
 };

drivers/acpi/acpica/nspredef.c

@@ -218,6 +218,7 @@ acpi_ns_check_predefined_names(struct acpi_namespace_node *node,
 		goto cleanup;
 	}
 	data->predefined = predefined;
+	data->node = node;
 	data->node_flags = node->flags;
 	data->pathname = pathname;
 

drivers/acpi/acpica/nsrepair2.c

@@ -503,6 +503,21 @@ acpi_ns_repair_TSS(struct acpi_predefined_data *data,
 {
 	union acpi_operand_object *return_object = *return_object_ptr;
 	acpi_status status;
+	struct acpi_namespace_node *node;
+
+	/*
+	 * We can only sort the _TSS return package if there is no _PSS in the
+	 * same scope. This is because if _PSS is present, the ACPI specification
+	 * dictates that the _TSS Power Dissipation field is to be ignored, and
+	 * therefore some BIOSs leave garbage values in the _TSS Power field(s).
+	 * In this case, it is best to just return the _TSS package as-is.
+	 * (May, 2011)
+	 */
+	status =
+	    acpi_ns_get_node(data->node, "^_PSS", ACPI_NS_NO_UPSEARCH, &node);
+	if (ACPI_SUCCESS(status)) {
+		return (AE_OK);
+	}
 
 	status = acpi_ns_check_sorted_list(data, return_object, 5, 1,
 					   ACPI_SORT_DESCENDING,