drivers/net: use tasklet_kill in device remove/close process

Some driver uses tasklet_disable in device remove/close process,
tasklet_disable will inc tasklet->count and return. If the tasklet
is not handled yet because some softirq pressure, the tasklet will
placed on the tasklet_vec, never have a chance to excute. This might
lead to ksoftirqd heavy loaded, wakeup with pending_softirq, but
tasklet is disabled. tasklet_kill should be used in this case.

Signed-off-by: Xiaotian Feng <dannyfeng@tencent.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
index 0793299bd39e..1d04754a6637 100644
--- a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
+++ b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
@@ -990,7 +990,7 @@ static int axienet_stop(struct net_device *ndev)
         axienet_setoptions(ndev, lp->options &
                            ~(XAE_OPTION_TXEN | XAE_OPTION_RXEN));
 
-        tasklet_disable(&lp->dma_err_tasklet);
+        tasklet_kill(&lp->dma_err_tasklet);
 
         free_irq(lp->tx_irq, ndev);
         free_irq(lp->rx_irq, ndev);