spi_transport_store_function(field, format_string) \
static CLASS_DEVICE_ATTR(field, S_IRUGO | S_IWUSR, \
show_spi_transport_##field, \
spi_transport_store_function(field, format_string) \
static CLASS_DEVICE_ATTR(field, S_IRUGO | S_IWUSR, \
show_spi_transport_##field, \