From: Holger Schurig Date: Wed, 30 Apr 2008 08:51:15 +0000 (+0200) Subject: libertas: allow removal of card at any time X-Git-Tag: firefly_0821_release~19559^2~453 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=652e3f208619dfe75867349d6164afe735eaf159;p=firefly-linux-kernel-4.4.55.git libertas: allow removal of card at any time This fixes several problems I had: * when removing the card while the card was scanning or associtating, it could happen that destroy_workqueue() stuck and didn't return. * make sure the command function doesn't run while we remove the list of pending commands * for still unknown reason, I had calls to lbs_stop_card() with priv==NULL Signed-off-by: Holger Schurig Acked-by: Dan Williams Signed-off-by: John W. Linville --- diff --git a/drivers/net/wireless/libertas/main.c b/drivers/net/wireless/libertas/main.c index 223ab3a14a13..0be89573716c 100644 --- a/drivers/net/wireless/libertas/main.c +++ b/drivers/net/wireless/libertas/main.c @@ -1166,8 +1166,8 @@ void lbs_remove_card(struct lbs_private *priv) dev = priv->dev; - cancel_delayed_work(&priv->scan_work); - cancel_delayed_work(&priv->assoc_work); + cancel_delayed_work_sync(&priv->scan_work); + cancel_delayed_work_sync(&priv->assoc_work); destroy_workqueue(priv->work_thread); if (priv->psmode == LBS802_11POWERMODEMAX_PSP) { @@ -1267,6 +1267,9 @@ void lbs_stop_card(struct lbs_private *priv) lbs_deb_enter(LBS_DEB_MAIN); + if (!priv) + goto out; + netif_stop_queue(priv->dev); netif_carrier_off(priv->dev); @@ -1276,6 +1279,7 @@ void lbs_stop_card(struct lbs_private *priv) device_remove_file(&dev->dev, &dev_attr_lbs_mesh); /* Flush pending command nodes */ + del_timer_sync(&priv->command_timer); spin_lock_irqsave(&priv->driver_lock, flags); list_for_each_entry(cmdnode, &priv->cmdpendingq, list) { cmdnode->result = -ENOENT; @@ -1286,6 +1290,7 @@ void lbs_stop_card(struct lbs_private *priv) unregister_netdev(dev); +out: lbs_deb_leave(LBS_DEB_MAIN); } EXPORT_SYMBOL_GPL(lbs_stop_card);