can_ram_rounddown_pow_of_two
num_rx = can_ram_rounddown_pow_of_two(config, &config->rx, 0, num_rx);
num_rx = can_ram_rounddown_pow_of_two(config, &config->rx,
num_tx = can_ram_rounddown_pow_of_two(config, &config->tx, 0, num_tx);
num_tx = can_ram_rounddown_pow_of_two(config, &config->tx,
num_tx = can_ram_rounddown_pow_of_two(config, &config->tx, 0, num_tx);
layout->default_rx = can_ram_rounddown_pow_of_two(config, &config->rx, 0, num_rx);
layout->max_rx = can_ram_rounddown_pow_of_two(config, &config->rx, 0, num_rx);
layout->max_tx = can_ram_rounddown_pow_of_two(config, &config->tx, 0, num_tx);