release_bus
void (*release_bus)(i2c_bus_cookie cookie);
void (*release_bus)(i2c_device cookie);
void (*release_bus)(i2c_bus cookie);
if (fController->release_bus != NULL)
fController->release_bus(fCookie);
.release_bus = [](i2c_bus_cookie cookie) {
release_bus,
fI2C->release_bus(fI2CCookie);
fI2C->release_bus(fI2CCookie);