static s32 brcmf_config_dongle(struct brcmf_cfg80211_info *cfg)
{
	struct net_device *ndev;
	struct wireless_dev *wdev;
	struct brcmf_if *ifp;
	s32 power_mode;
	s32 err = 0;

	if (cfg->dongle_up)
		return err;

	ndev = cfg_to_ndev(cfg);
	wdev = ndev->ieee80211_ptr;
	ifp = netdev_priv(ndev);

	/* make sure RF is ready for work */
	brcmf_fil_cmd_int_set(ifp, BRCMF_C_UP, 0);

	brcmf_dongle_scantime(ifp);

	power_mode = cfg->pwr_save ? PM_FAST : PM_OFF;
	err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_PM, power_mode);
	if (err)
		goto default_conf_out;
	brcmf_dbg(INFO, "power save set to %s\n",
		  (power_mode ? "enabled" : "disabled"));

	err = brcmf_dongle_roam(ifp);
	if (err)
		goto default_conf_out;
	err = brcmf_cfg80211_change_iface(wdev->wiphy, ndev, wdev->iftype,
					  NULL);
	if (err)
		goto default_conf_out;

	brcmf_configure_arp_nd_offload(ifp, true);

	cfg->dongle_up = true;
default_conf_out:

	return err;

}

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.