static void pmcraid_process_ccn(struct pmcraid_cmd *cmd)
{
	struct pmcraid_instance *pinstance = cmd->drv_inst;
	u32 ioasc = le32_to_cpu(cmd->ioa_cb->ioasa.ioasc);
	unsigned long lock_flags;

	pinstance->ccn.cmd = NULL;
	pmcraid_return_cmd(cmd);

	/* If driver initiated IOA reset happened while this hcam was pending
	 * with IOA, or IOA bringdown sequence is in progress, no need to
	 * re-register the hcam
	 */
	if (ioasc == PMCRAID_IOASC_IOA_WAS_RESET ||
	    atomic_read(&pinstance->ccn.ignore) == 1) {
		return;
	} else if (ioasc) {
		dev_info(&pinstance->pdev->dev,
			"Host RCB (CCN) failed with IOASC: 0x%08X\n", ioasc);
		spin_lock_irqsave(pinstance->host->host_lock, lock_flags);
		pmcraid_send_hcam(pinstance, PMCRAID_HCAM_CODE_CONFIG_CHANGE);
		spin_unlock_irqrestore(pinstance->host->host_lock, lock_flags);
	} else {
		pmcraid_handle_config_change(pinstance);
	}
}

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