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staging: wilc1000: refactor wilc_netdev_init() to handle memory free in error path 

Refactor the wilc_netdev_init() to cleanup the memory for error
scenario and remove unnecessary 'dev' pointer check.

Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ajay Singh 2018-09-04 12:09:41 +05:30 committed by Greg Kroah-Hartman
parent b3ee105c33
commit a53b0b1392
2 changed files with 30 additions and 12 deletions
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36
drivers/staging/wilc1000/linux_wlan.c
View File

@ -1073,10 +1073,8 @@ int wilc_netdev_init(struct wilc **wilc, struct device *dev, int io_type,
INIT_LIST_HEAD(&wl->rxq_head.list);
wl->hif_workqueue = create_singlethread_workqueue("WILC_wq");
if (!wl->hif_workqueue) {
kfree(wl);
return -ENOMEM;
}
if (!wl->hif_workqueue)
goto free_wl;
register_inetaddr_notifier(&g_dev_notifier);
@ -1085,7 +1083,7 @@ int wilc_netdev_init(struct wilc **wilc, struct device *dev, int io_type,
ndev = alloc_etherdev(sizeof(struct wilc_vif));
if (!ndev)
return -ENOMEM;
goto free_ndev;
vif = netdev_priv(ndev);
memset(vif, 0, sizeof(struct wilc_vif));
@ -1106,15 +1104,13 @@ int wilc_netdev_init(struct wilc **wilc, struct device *dev, int io_type,
ndev->netdev_ops = &wilc_netdev_ops;
wdev = wilc_create_wiphy(ndev, dev);
if (dev)
SET_NETDEV_DEV(ndev, dev);
if (!wdev) {
netdev_err(ndev, "Can't register WILC Wiphy\n");
return -1;
goto free_ndev;
}
SET_NETDEV_DEV(ndev, dev);
vif->ndev->ieee80211_ptr = wdev;
vif->ndev->ml_priv = vif;
wdev->netdev = vif->ndev;
@ -1125,11 +1121,29 @@ int wilc_netdev_init(struct wilc **wilc, struct device *dev, int io_type,
ret = register_netdev(ndev);
if (ret)
return ret;
goto free_ndev;
vif->iftype = STATION_MODE;
vif->mac_opened = 0;
}
return 0;
free_ndev:
for (; i >= 0; i--) {
if (wl->vif[i]) {
if (wl->vif[i]->iftype == STATION_MODE)
unregister_netdev(wl->vif[i]->ndev);
if (wl->vif[i]->ndev) {
wilc_free_wiphy(wl->vif[i]->ndev);
free_netdev(wl->vif[i]->ndev);
}
}
}
unregister_inetaddr_notifier(&g_dev_notifier);
destroy_workqueue(wl->hif_workqueue);
free_wl:
kfree(wl);
return -ENOMEM;
}

6
drivers/staging/wilc1000/wilc_wfi_cfgoperations.c
View File

@ -2145,8 +2145,12 @@ struct wireless_dev *wilc_create_wiphy(struct net_device *net,
set_wiphy_dev(wdev->wiphy, dev);
ret = wiphy_register(wdev->wiphy);
if (ret)
if (ret) {
netdev_err(net, "Cannot register wiphy device\n");
wiphy_free(wdev->wiphy);
kfree(wdev);
return NULL;
}
priv->dev = net;
return wdev;