static int pmcraid_change_queue_depth(struct scsi_device *scsi_dev, int depth,
				      int reason)
{
	if (reason != SCSI_QDEPTH_DEFAULT)
		return -EOPNOTSUPP;

	if (depth > PMCRAID_MAX_CMD_PER_LUN)
		depth = PMCRAID_MAX_CMD_PER_LUN;

	scsi_adjust_queue_depth(scsi_dev, scsi_get_tag_type(scsi_dev), depth);

	return scsi_dev->queue_depth;
}

This weakness involves numeric computation errors, such as integer overflows, underflows, or precision losses, which can lead to miscalculations and exploitable behaviors in software.