MMCSETUPWRITEPARAMS
error = ioctl(dev_fd, MMCSETUPWRITEPARAMS, &mmc_writeparams);
error = ioctl(dev_fd, MMCSETUPWRITEPARAMS, &mmc_writeparams);
case MMCSETUPWRITEPARAMS :
error = VOP_IOCTL(ump->devvp, MMCSETUPWRITEPARAMS, &mmc_writeparams,
error = VOP_IOCTL(ump->devvp, MMCSETUPWRITEPARAMS,