Commit 20c888be authored by Ajay Singh's avatar Ajay Singh Committed by Greg Kroah-Hartman
Browse files

staging: wilc1000: add check before performing operation on net_device 



Before calling an operation on net_device check if that interface is
available.

Signed-off-by: default avatarAjay Singh <ajay.kathat@microchip.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent f2bf97cb

drivers/staging/wilc1000/linux_wlan.c

+8 −4
Original line number Diff line number Diff line
@@ -159,9 +159,11 @@ static int linux_wlan_txq_task(void *vp) 
		do {

			ret = wilc_wlan_handle_txq(dev, &txq_count);

			if (txq_count < FLOW_CONTROL_LOWER_THRESHOLD) {

				if (netif_queue_stopped(wl->vif[0]->ndev))

				if (wl->vif[0]->mac_opened &&

				    netif_queue_stopped(wl->vif[0]->ndev))

					netif_wake_queue(wl->vif[0]->ndev);

				if (netif_queue_stopped(wl->vif[1]->ndev))

				if (wl->vif[1]->mac_opened &&

				    netif_queue_stopped(wl->vif[1]->ndev))

					netif_wake_queue(wl->vif[1]->ndev);

			}

		} while (ret == -ENOBUFS && !wl->close);
@@ -761,7 +763,9 @@ netdev_tx_t wilc_mac_xmit(struct sk_buff *skb, struct net_device *ndev) 
						linux_wlan_tx_complete);



	if (queue_count > FLOW_CONTROL_UPPER_THRESHOLD) {

		if (wilc->vif[0]->mac_opened)

			netif_stop_queue(wilc->vif[0]->ndev);

		if (wilc->vif[1]->mac_opened)

			netif_stop_queue(wilc->vif[1]->ndev);

	}

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