From 20c888becca9c678f2c0aa24d9afec758196bd41 Mon Sep 17 00:00:00 2001 From: Ajay Singh Date: Tue, 5 Feb 2019 07:15:48 +0000 Subject: [PATCH] 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: Ajay Singh Signed-off-by: Greg Kroah-Hartman --- drivers/staging/wilc1000/linux_wlan.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/drivers/staging/wilc1000/linux_wlan.c b/drivers/staging/wilc1000/linux_wlan.c index 56272b3cc5f8..f096f9e6b274 100644 --- a/drivers/staging/wilc1000/linux_wlan.c +++ b/drivers/staging/wilc1000/linux_wlan.c @@ -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); @@ -761,8 +763,10 @@ 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) { - netif_stop_queue(wilc->vif[0]->ndev); - netif_stop_queue(wilc->vif[1]->ndev); + 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); } return 0;