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

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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>
This commit is contained in:
Xiaotian Feng
2012-10-31 00:29:57 +00:00
committed by David S. Miller
parent d145f7ec23
commit 175c0dffef
5 changed files with 9 additions and 9 deletions
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8
drivers/net/ethernet/jme.c
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@@ -1948,10 +1948,10 @@ jme_close(struct net_device *netdev)
JME_NAPI_DISABLE(jme);
tasklet_disable(&jme->linkch_task);
tasklet_disable(&jme->txclean_task);
tasklet_disable(&jme->rxclean_task);
tasklet_disable(&jme->rxempty_task);
tasklet_kill(&jme->linkch_task);
tasklet_kill(&jme->txclean_task);
tasklet_kill(&jme->rxclean_task);
tasklet_kill(&jme->rxempty_task);
jme_disable_rx_engine(jme);
jme_disable_tx_engine(jme);