dcdioctl_cmd
static int dcdioctl_cmd(dev_t, struct udcd_cmd *,
status = dcdioctl_cmd(dev, &ucmd, UIO_SYSSPACE, UIO_SYSSPACE);
status = dcdioctl_cmd(dev, &ucmd, UIO_SYSSPACE, UIO_SYSSPACE);
i = dcdioctl_cmd(dev, scmd, UIO_SYSSPACE, UIO_USERSPACE);
i = dcdioctl_cmd(dev, scmd, uioseg, uioseg);
status = dcdioctl_cmd(dev, &ucmd, UIO_SYSSPACE, UIO_SYSSPACE);
status = dcdioctl_cmd(dev, &ucmd, UIO_SYSSPACE, UIO_SYSSPACE);