UI2C_IOCTL_I2C_REQ
if (ioctl(req->io_port->port_fd, UI2C_IOCTL_I2C_REQ, &i2c) != 0) {
if (ioctl(fd, UI2C_IOCTL_I2C_REQ, req) != 0) {
.info_ioctl = UI2C_IOCTL_I2C_REQ,
case UI2C_IOCTL_I2C_REQ: