Hi Claudiu,
On Tue, 11 Sep 2018 12:21:13 +0300
Claudiu Beznea <claudiu.bez...@microchip.com> wrote:
> On 04.09.2018 09:39, Ajay Singh wrote:
> > Refactor the wilc_netdev_init() to cleanup the memory for error
> > scenario and remove unnecessary 'dev' pointer check.
> >
> > Signed-off-by: Ajay Singh <ajay.kat...@microchip.com>
> > ---
> > drivers/staging/wilc1000/linux_wlan.c | 36
> > ++++++++++++++++-------
> > drivers/staging/wilc1000/wilc_wfi_cfgoperations.c | 6 +++- 2 files
> > changed, 30 insertions(+), 12 deletions(-)
> >
> > diff --git a/drivers/staging/wilc1000/linux_wlan.c
> > b/drivers/staging/wilc1000/linux_wlan.c index d7d43fd..91a45a7
> > 100644 --- a/drivers/staging/wilc1000/linux_wlan.c
> > +++ b/drivers/staging/wilc1000/linux_wlan.c
> > @@ -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;
>
> In case this happens you will loose the return code of
> register_netdev() and you will return instead -ENOMEM. Maybe, the
> best approach will be to initialize ret = -ENOMEM while declaring it
Thanks for your suggestion to handle the return code.
I will work on it and submit the changes in different series.
Regards,
Ajay
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