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at76c50x-usb: additional disconnect fixes

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Additional attempts to fix Oops on disconnect, that appear to be successful.
However, some may be extraneous.

The cancel_delayed_work call is probably the most necessary.  The
device_unplugged check may not be necessary.  del_timer_sync may not
be necessary either, but the Oops I was receiving was related to
timers.  Hence the addition.

Signed-off-by: Jason Andryuk <jandryuk@gmail.com>
Signed-off-by: Kalle Valo <kalle.valo@iki.fi>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Jason Andryuk 2009-02-21 09:53:29 +02:00 committed by John W. Linville
parent 5a2137ddcc
commit 1cc198fee9
1 changed files with 6 additions and 0 deletions
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6
drivers/net/wireless/at76c50x-usb.c
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@ -1497,6 +1497,9 @@ static void at76_work_set_promisc(struct work_struct *work)
work_set_promisc);
int ret = 0;
if (priv->device_unplugged)
return;
mutex_lock(&priv->mtx);
priv->mib_buf.type = MIB_LOCAL;
@ -2290,6 +2293,7 @@ static void at76_delete_device(struct at76_priv *priv)
tasklet_kill(&priv->rx_tasklet);
if (priv->mac80211_registered) {
cancel_delayed_work(&priv->dwork_hw_scan);
flush_workqueue(priv->hw->workqueue);
ieee80211_unregister_hw(priv->hw);
}
@ -2307,6 +2311,8 @@ static void at76_delete_device(struct at76_priv *priv)
kfree(priv->bulk_out_buffer);
del_timer_sync(&ledtrig_tx_timer);
if (priv->rx_skb)
kfree_skb(priv->rx_skb);