acpi_compare_param
if (!acpi_compare_param(val, "enable")) {
} else if (!acpi_compare_param(val, "disable"))
else if (!acpi_compare_param(val, "method-once"))
else if (!acpi_compare_param(val, "method"))
else if (!acpi_compare_param(val, "opcode-once"))
else if (!acpi_compare_param(val, "opcode"))